Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Modifications to the radiator suspension and cross member. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X. 7250 DA1/M3.11.25. EAC. 8. RADIATOR SUSPENSION AND CROSS MEMBER. X. 7250 We send herewith N.sch.2076 shewing the method of mounting the radiator, and the radiator… | ||
| Scan002 | Radiator with integral shutters and comparing it to the previous 'W' series. | ||
| View original record | X. 7250 To BY. from DA. c. to CJ. Hs. DA2/M3. 11.25. EAC. 8. RADIATOR & SHUTTERS. We send herewith N.sch. 2077 - shewing the radiator with integral shutters. The height of this radiator above the… | ||
| Scan003 | Alternative radiator suspension design using spherical supports. | ||
| View original record | X. 7250 To BY. from DA. c. to CJ. Hs. DA7/M7.11.25. EAC. 8. RADIATOR SUSPENSION. Herewith we send H.sch.2086 shewing an alternative arrangement of the spherical supports providing a certain amount of… | ||
| Scan004 | Front cross member and radiator suspension, referencing schematic N.sch.2103 and comparing it to EAC.8. | ||
| View original record | To BY. from DA. c. to CJ. Hs. +7250 DA3/M10.12.25. EAC.7: FRONT CROSS MEMBER, RADIATOR SUSPENSION ETC. 7380 X.7380 X.7250 We send herewith N.sch.2103., shewing the sheet metal cross member, radiator… | ||
| Scan005 | Status of experimental chassis 7-EX and 12-EX, concerning parts fitting and radiator standardisation. | ||
| View original record | To BJ. from Hs. X7250 Hs4/LG25.8.26. 7-EX CHASSIS. X8250 Answering your BJ9/D24.8.26. This chassis is still at the Works havving new parts fitted to it before it is returned to Messrs. Barkers. We… | ||
| Scan006 | Overheating tests in France, comparing fan and radiator positions on experimental cars 8-EX and 12-EX. | ||
| View original record | To B.J. from Hs. c. to F.N. c. to C.M.B. X7250 Hs4/LGM.9.26. TESTS ON OVER-HEATING IN FRANCE. X766 With reference to F.N's suggestion that the probable reason that 8-EX could not be made to boil on… | ||
| Scan007 | Cooling system performance of the 12-EX model and potential modifications. | ||
| View original record | S/W. Hs. X7250 CWBS/GM/30-9-25. 1 X766 12-EX. COOLING. The cooling of 12-EX was found to be very satisfactory, as reported in my general report on the running of this car. Have you been able to make… | ||
| Scan008 | Feedback and proposed alterations to the radiator design on the 12-EX model. | ||
| View original record | To R. from BJ. [R. is struck through] Copy to BY. [BY. is struck through] Copy to Hs. Handwritten: X7250 12-EX. Radiator. We noticed on 12-EX that a radiator had been fitted with built-in shutters,… | ||
| Scan009 | Confirming a conversation about Standardisation Sheet No.7250 and radiators with integral shutters. | ||
| View original record | To Hs. from BJ. Radiator with Integral Shutters. X7250 BJ3/E2/12/26 Confirming our conversation of yesterday, concerning Standardisation Sheet No.7250, I understand that you will speak to Mr.Royce and… | ||
| Scan010 | Standardization of Phantom radiators with integral shutters. | ||
| View original record | X7250 To B.J. from Hs. Hs2/LG16.12.26. PHANTOM RADIATOR WITH INTEGRAL SHUTTERS. X8250 Unfortunately we had not an opportunity of discussing this matter with R. during our last visit to WW. Col. Fell's… | ||
| Scan011 | Standardisation proposal for a thermometer with an electrical contact to warn drivers of boiling water. | ||
| View original record | RR 755 (10H) (DB130 12-9-24) MS 301225 47250 COMPLETED 22.12.26 STANDARDISATION of CHASSIS PARTS. Date 22.9.26 Description of Parts: THERMOMETER WITH ELECTRICAL CONTACT. Origin: To prevent shutters of… | ||
| Scan012 | Car appearance improvements related to radiators, bonnets, number plates, and frame height. | ||
| View original record | 47250 To BJ. DA. E. from R. c. to Wor. Hs. BY. R5/M22.12.26. RR. CAR APPEARANCE - RADIATORS AND BONNETS. X.7250 X.5260 A X.7260 X.5250 I am very pleased that you like the radiators with integral… | ||
| Scan013 | Controversy over radiator thickness, bonnet length, and the optimal diameter of radiator tubes. | ||
| View original record | X7250 To Hs. from DA. DAL/M13.1.27. 40/50 HP. BONNET & RADIATOR ETC. X.8260 X.7260 X.8250 X.7250 With reference to the controversy which is now going on regarding the thickness of radiator, length of… | ||
| Scan014 | Proposed design changes to a 40/50 bonnet and radiator. | ||
| View original record | To Hs. from DA. x7250 DA2/M15.1.27. 40/50 BONNET AND RADIATOR. X.8260 X.7260 X.8250 X.7250 With further reference to this question, and your Hs1/LG13.1.27, we are putting up a proposal to R., which by… | ||
| Scan015 | Appearance of an integral radiator, enclosing prints and suggesting modifications to a sales model for approval. | ||
| View original record | X. 7250 To RG. from DA. To Hs. DA2/M25.1.27. EAC. 8. INTEGRAL RADIATOR ETC. We enclose herewith prints of N.schs. 2346 and 2350., dealing with the question of the appearance of the radiator on the… | ||
| Scan016 | Design modifications for radiators with integral shutters, including a table comparing the front radiator area of various car models. | ||
| View original record | (To BG. Hs. From DA.) X7250 DA1/M25.1.27. ROLLS-ROYCE LIMITED. EAC. 8. RADIATOR WITH INTEGRAL SHUTTERS ETC. X.7250 X.8250 X.766 As regards the thickness of the radiator when fitted with integral… | ||
| Scan017 | Comparison of radiator designs focusing on tube dimensions and their effect on total cooling area and efficiency. | ||
| View original record | (Contd) -2- The increases on the original EAC.8. are due to the matrix going further below the top of the frame, and also due to the construction doing away with the side plates not in contact with… | ||
| Scan018 | Dimensional corrections for the Phantom Radiator tank and filler size. | ||
| View original record | To hs. from DA. c. to CWB. PHANTOM RADIATOR. X.8250 X.7250 With reference to CWB18/GM24.1.27., we think that item 3. in the schedule is not quite correct, and does not agree with items 1. and 2. The… | ||
| Scan019 | Revised radiator and bonnet design, suggesting the creation of a physical prototype. | ||
| View original record | To RG. Hs. from DA. c. to BJ. EAC. 8. RADIATOR AND BONNET REVISED. X. 7250 X. 7260 We send herewith a print of N.Sch.3ch. 2353 shewing the bonnet to be used in conjunction with the revised radiator.… | ||
| Scan020 | Design modifications and alternative proposals for the Phantom radiator and bonnet. | ||
| View original record | CERTIFICATE OF INSPECTION ROLLS-ROYCE ENGINES AND SPARES 7250 To CWB. Hs. From DA. c. to C. PHANTOM RADIATOR ETC. DA1/M2.2.27. X.8250 X.7250 Referring to CWB4/GM1.2.27. when we received express… | ||
| Scan021 | Proposed modifications to radiator and bonnet proportions, pending approval. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X7250 DAL/M5.2.27. X.7250 X.1085 X.7260 EAC. 8. RADIATOR SHUTTERS AND BONNET. As you know we are endeavouring to come to an agreement regarding some modifications to the… | ||
| Scan022 | Improvements to the Phantom radiator and bonnet, focusing on integral shutters. | ||
| View original record | To DA. Hs. BY. from R. c. to BJ. Wor. E. RG. [STAMPED: ROLLS-ROYCE LIMITED] PHANTOM RADIATOR AND BONNET. EAC.8. FOR IMPROVED APPEARANCE INTEGRAL SHUTTERS. I have carefully examined 7-EX at Le Canadel… | ||
| Scan023 | Modifications to bonnet fasteners, locks, and radiators for the 20 HP and 7-EX models. | ||
| View original record | contd :- -2- ROLLS-ROYCE LIMITED bonnet fasteners. You have a completely new one to try (RR. patent) and also some modifications to the 20 HP. type (2nd. modification). Also still very anxious to get… | ||
| Scan024 | Query regarding the unusually effective cooling of the EAC-8 (12-EX) engine and radiator following a trip to the Alps. | ||
| View original record | S/W. To Hs. Copy to CWB. [STAMP: RECEIVED FEP 15 1927] X7250 PN6/EH.14.2.27. In DA1/M1.2.27. on radiators and shutters, reference is made to the better cooling of EAC-8 (12-EX which was with CWB. and… | ||
| Scan025 | Difficulty of fitting a raised radiator and bonnet to car EAC.7 and proposing solutions. | ||
| View original record | To Hs. BY. From DA. X7250 DA2/M23.2.27. EAC.7. RADIATOR, BONNET & DASH. X.7250 X.7260 X.7830 With further reference to R5/M10.2.27., there will be a difficulty in fitting the raised radiator and… | ||
| Scan026 | Feasibility of reducing radiator thickness for the Phantom EAC. 8 Type model. | ||
| View original record | 47250 To BY. Hs. from DA. DA2/M26.2.27. PHANTOM RADIATOR & BONNET. X.7250 EAC. 8. TYPE. X.7260 With reference to R5/M10.2.27., we have looked into the question of reducing the thickness of the… | ||
| Scan027 | Design specifications for a radiator with integral shutters for the 40/50HP Standard Phantom Chassis. | ||
| View original record | c. to Hs. X7250 BY/SS1/DB.9.3.27. Re 40/50HP Chassis - Radiator with Integral Shutters. With reference to the recent memos which have passed between W.W. and Derby regarding the depth of the Radiator… | ||
| Scan028 | Design proposal for a 40/50 Phantom radiator with integral shutters, compared to a production version with separate shutters. | ||
| View original record | EAC VII (14EX) and EAC VIII (DEX) will require slightly different design. Top Drawing: Width of Top Tank 5.500 4750 Tubes Tubes 7-8 m/m PHANTOM. PRODUCTION SEPARATE SHUTTERS Bottom Drawing: Width of… | ||
| Scan029 | Faded document with a red 'Print Room' stamp from Derby. | ||
| View original record | ROLLS-ROYCE C o D PRINT ROOM, 9 MAR 1927 DERBY. | ||
| Scan030 | Proposed modifications to the EAC. 8 radiator, discussing tube dimensions, cooling area, and bonnet height adjustments. | ||
| View original record | To BY. from DA. c. to BJ. HS/RM. RG. X7250 DA1/M17.3.27. EAC. 8. RADIATOR. X. 7250 X. 7260 With reference to the question of appearance of this radiator the position now is that we are authorised to… | ||
| Scan031 | Status and filing of radiator drawing N.sch.2371. | ||
| View original record | X. 7250 To BY. from DA. c. to BJ. Hs. DA15/M7.4.27. EAC.8 - RADIATOR. We send herewith N.sch.2371 which is referred to in R3/M31.3.27. This drg. was made originally with a view to finding a way of… | ||
| Scan032 | Tests on fan positioning for improved cooling efficiency on the 12-EX and its proposed application to standard Phantom cars. | ||
| View original record | To Da. from Hs/Rm. c. EY. X7250 Hs/Rml/T25.4.27. X766 X7250 We have been carrying out some tests to determine whether the fan when pushed up close to the radiator as on 12-EX has any increased cooling… | ||
| Scan033 | Change to narrower radiator tubes from 8mm to 7mm. | ||
| View original record | To BY. from Hs. c. to E. c. to DA. X7250 Hs4/LG9.11.27. RE. NARROWER RADIATOR. X8250 ------------------------- 7 mm. tubes should be used in this radiator in place of the 8 mm. tubes which are now… | ||
| Scan034 | Alternative radiator suspension schemes for the 12-EX model, using a 'Ferobestos' bush type. | ||
| View original record | To Hs. C. to BG/RWS. C. to BY/CS. C. to BY/HEB. X7250 BY/SS2/DB.22.11.27. Re EAC.8. (12-EX). Radiator Suspension. With the "Ferobestos" bush type of Radiator Mounting, W.W. sent alternative schemes.… | ||
| Scan035 | Design features and improvements for the EAC.7 vehicle, including the radiator and engine suspension. | ||
| View original record | Hs. E. DA. from R. 47250 R2/M9.1.28. c. to BJ. LHS. RG. c. to PN. WOr. BY. X.7770 X.7530 c. to C. SG. CWB. EAC.10. X.7830 X.7410 ______ X.7250 X.7070 I am so pleased with EAC.7. that in making the… | ||
| Scan036 | Potential improvements to a vehicle's throttle cooling, induction, braking, and body design. | ||
| View original record | contd :- -2- In the EAC.10 we ought to make a desperate attempt to return to water cooling of the throttle, even if it requires my small superheater of the water on the exhaust pipe - i.e. (steam… | ||
| Scan037 | Technical review of the flexibility, stiffness and mounting of steering columns, scuttles, and dashboards for 20 HP and 40 HP models. | ||
| View original record | DA. BY. from R: HS. c. to BJ. Wor. C. E. SG. 47250 R3/M7.4.28. 20 HP. & 40 HP. STEERING COLUMNS, X.5500 X.7260 SCUTTLES AND DASHBOARDS REVIEWED. X.7500 X.7250 X.7430 X.5430 A dashboard should be able… | ||
| Scan038 | Modifications to the Phantom's radiator, bonnet, and dashboard for the G.2.B. series chassis. | ||
| View original record | X/7250 BY. from R. c. to BJ. Hs. R6/M7.5.28. PHANTOM - MODIFIED RADIATOR, BONNET X.7250 AND POSSIBLY DASHBOARD. X.7260 --------------------------------------- There are certain modifications for the… | ||
| Scan039 | Impact of a higher radiator on driver visibility for the Phantom model. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. +7250 Hs2/LG8.5.28. HIGHER RADIATOR FOR PHANTOM. X7430 If this is used in connection with the lowest raked steering E. position, it does definitely… | ||
| Scan040 | Proposals for a higher radiator, bonnet, and dash for the Phantom model. | ||
| View original record | DA. c. Hs. c. Sg. X7250 BY/Cgh15/G.11.5.28. PHANTOM - HIGHER RADIATOR, BONNET AND DASH. --------------------------------------------- With reference to Ev5/7.5.28. we send you herewith print of N.… | ||
| Scan041 | Clarifying confusion over the 'E' steering position for the Phantom model, detailing a lower column design. | ||
| View original record | S/W. ✓ Hs. Copy to R) " " Wo?) " " Ev. " " By. X7250 Sg13/W/11.5.28. Re: High Radiator for Phantom. Referring to Hs2/LG8.5.28. we fear that a little confusion has arisen in regard to what is referred… | ||
| Scan042 | Rebuilding of chassis 15-EX with an ordinary long frame and proposed new components. | ||
| View original record | Hs. from DA/EV. c. to - BY. +7250 DA/EV1/M16.5.28. 15-EX. X.7770 X.7430 X.7380 X.7250 You told us that 15-EX will be rebuilt as an ordinary chassis, not a sports chassis, and that it will have a long… | ||
| Scan043 | Parts for a Phantom Chassis experiment, specifically for an F-2-B Series. | ||
| View original record | COPY. X7250 To RHC. BY/CS3/DB. 24.5.28. Re Phantom Chassis - Radiator - Sec: 5250. Shutters - Sec: 5251. Bonnet - Sec: 5260. Water Conns: - Sec: 5190. With reference to our instructions BY/CS4/DB.… | ||
| Scan044 | Instructions for fitting a special radiator, bonnet, and dash with new proportions to chassis 15-EX. | ||
| View original record | RHC. Hm. Hs. Sn. X7250 BY1/G.30.5.28. CHASSIS 15-EX. RE SPECIAL RADIATOR, BONNET AND DASH TO NEW PROPORTIONS REQUIRED BY R. It has been decided that the new proportioned radiator, bonnet and dash,… | ||
| Scan045 | Instructing a part change for the Phantom Chassis shutter controls for an experiment with a higher radiator. | ||
| View original record | WORK ON NEW CHASSIS COPY. X. 7250H To R.H.C. Re Phantom Chassis - Controls - Sec: 5240. Further to our memo BY/CS3/DB.24.5.28., instructing parts for 1" higher radiator etc. please instruct Pull Rod… | ||
| Scan046 | Instructions to change chassis 15-EX to standard build and fit its special radiator, bonnet, and dash to chassis 55-AL. | ||
| View original record | Hm. [struck through] c. Hs. [struck through] c. RHC. [struck through] c. Sft. c. Mx. c. D/Sn. X7250 BY/Cghl/G.5.6.28. CHASSIS 15-EX. 1928 SPECIAL RADIATOR, BONNET AND DASH.… | ||
| Scan047 | Request to issue a Standardisation Sheet for modifications to the G.2.B. Series Chassis. | ||
| View original record | X7250 Hs. BY/Mtn11/K. 13. 7.28. RE G.2.B. SERIES CHASSIS. We attach hereto copy of Sg9/K/12.7.28., approving of the higher radiator bonnet and dash as fitted to 29-CL. Will you please issue a… | ||
| Scan048 | Dashboard and radiator modifications for the G.2.B. Series Chassis, confirming a telegram and discussing suggestions from Barker's. | ||
| View original record | COPY S/W. By (Copy to Da/Ev.) " " Sn). Sg9/M/12.7.28. Re: G.2.B. SERIES CHASSIS. Referring to higher radiator and dash as per former correspondence, we have now inspected 29-CL, and confirm telegram… | ||
| Scan049 | Timeline for fitting a 12-EX car with a higher radiator and dashboard. | ||
| View original record | To Sg. from Hs. c. to BY. c. to DA/EV. 47250 Hs1/LG20.7.28. PHANTOM. 'E' STEERING. 47430 Replying to Sg11/M19.7.28. We anticipate it will be 4 or 5 weeks before we have 12-EX car fitted with the… | ||
| Scan050 | Modifications and quality issues of the radiator mascots and fillers for the Phantom and 20 HP models. | ||
| View original record | EY. from DA/EV. c. to BJ. HS. c. to Se. CWS. 47250 DA/EV1/M27.7.28. RADIATOR MASCOTS & FILLERS. X.5250 X.3790 PHANTOM AND 20 HP. X.7250 X.7190 we send herewith N.schs. 2669/70 showing the 20 HP. and… | ||
| Scan051 | Tests to resolve an objectionable fan noise on the Phantom G2B chassis. | ||
| View original record | To BY. from Hs.GWH. 47250 Hs/GWH/LG17.8.28. PHANTOM CHASSIS. 47220. On G2B. series, the engine is pushed forward, bringing the fan .500" nearer to the matrix of the radiator. This produces an… | ||
| Scan052 | Parts list, chassis body design proposals, and radiator and scuttle features. | ||
| View original record | Hs. from R. BY. c. to BJ. Wor. X7250 R3/M28.8.28. EAC.10. X.7770 X.7830 X.7250 X.7500 Mr. Wormald brought a list of parts waiting for designs. Fortunately most of these were well in hand, but some… | ||
| Scan053 | Schematics and design choices for the 'SS' radiator, cross member, and suspension. | ||
| View original record | BY. from DA. c. to BJ. Hs. X7250 DA1/M29. 8. 28. 'SS' RADIATOR, CROSS MEMBER, AND SUSPENSION. X.7250 X.7380 Herewith we send N.sch.2683 shewing the radiator and suspension and radiator cross member.… | ||
| Scan054 | Fitting 'E' type steering and other modifications to the 12-EX car. | ||
| View original record | X7250 To Sg. from Hs. Hsl/LG10.9.28. PHANTOM 'E' STEERING. X7430. With reference to Sg6/M7.9.28. 12-EX car is at present in the shop having the E. steering fitted. There are several other jobs being… | ||
| Scan055 | Schematic N.Sch.2696, noting Mr. Royce's preference for the simplest method of carrying the starting handle shaft through the radiator matrix. | ||
| View original record | BY. from DA. c. to BJ. Hs. Y7250 DAL/M12.9.28. 'SS' RADIATORS. X.7250 X.7270 Herewith we send N.Sch.2696., shewing the method of carrying the tunnel for the starting handle shaft through the radiator… | ||
| Scan056 | Standardisation of chassis parts relating to a higher radiator, bonnet, and dash. | ||
| View original record | RR 785 REVISED (10H) (D.C. 777-20-2-28) M C.LTD X7250 COMPLETED 25.9.28 STANDARDISATION of CHASSIS PARTS. Date 13.7.28 Description of Parts. HIGHER RADIATOR, BONNET & DASH. Origin. To improve… | ||
| Scan057 | Implementation of a new part on a chassis, including costs and testing schedule. | ||
| View original record | (1) The number of the first chassis on which the new part will be fitted. G.2.B. (2) Date when the chassis will be handed to test. 12.11.28 (3) Cost of scrapped material, if any. Nil. (4) Cost of jigs… | ||
| Scan058 | Modifications to the 'SS' radiator outline and its effect on the bonnet. | ||
| View original record | BY. from DA. c. to BJ. Hs. 47250 DA2/M28.9.28. 'SS' RADIATOR. X.7250 X.7260 Herewith we send N.sch.2727 shewing the outline of the front of the radiator as promised in a previous letter. It will be… | ||
| Scan059 | Instructions for chromium plating an 'SS' car's radiator and headlamps. | ||
| View original record | To BY. from Hs/Rn. X7250 Hs/Rmll/LGL7.10.28. We understand that you are instructing one of the radiators for 'SS' to be chromium plated. If this is so, we can tell Ev. to go ahead with headlamps etc.… | ||
| Scan060 | Procurement of a chromium-plated radiator and fitting of other chromium-plated parts. | ||
| View original record | X7250 X1360 DA/EV. from Hs/Rm. Hs/Rml2/LGI 7.10.28. With reference to DA/EV2/M10.10.28. We are obtaining a chromium plated radiator so that you will be able to fit chromium plated headlamps, door… | ||
| Scan061 | Providing more clearance for the 'SS' radiator and fan by reconstructing the starting handle bracket. | ||
| View original record | 47250 BY. from DA. c. to BJ. Hs. DA2/M18.10.28. 'SS' RADIATOR & FAN. X.615 X.7250 X.7220 Replying to BY/CGH4/G15.10.28., though we do not remember the experimental report limiting the closeness of the… | ||
| Scan062 | Process of chromium plating on nickel silver and the specifications for various car parts. | ||
| View original record | Hs. from DA. X7250 DA2/M20.10.28. CHROMIUM PLATING. X.1360 X.7800 X.7250 With reference to Hs/Rml2/LG17.10.28, we were informed by Cannings at the Show that it was not possible to chromium plate on… | ||
| Scan063 | Completion and positive reception of the first 'SS' chassis. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. 47250 'SS' CHASSIS. 47770 We have completed the first SS. chassis. We are all very pleased with its appearance. The radiator being lower in the… | ||
| Scan064 | Written note discussing modifications to a radiator support, including increasing stud size and using a rubber washer. | ||
| View original record | COPY OF WRITTEN NOTE. To Hs. from R. Sunday the 9th. Dec. 1928. X7250 Further to my letter of last night, DA. and I worked at the radiator support this morning, and came to the conclusion that for… | ||
| Scan065 | Note detailing a modification for a radiator support, increasing the stud size and substituting a rubber washer for the steel spring. | ||
| View original record | COPY OF WRITTEN NOTE. X7250 To Hs. from R. Sunday the 9th. Dec. 1928. Further to my letter of last night, DA. and I worked at the radiator support this morning, and came to the conclusion that for… | ||
| Scan066 | Written note detailing proposals for improving the 'SS' radiator support, including a temporary scheme and forthcoming final modifications. | ||
| View original record | COPY OF WRITTEN NOTE. To Hs. from DA. DA1/LG9.12.28. 'SS' RADIATOR SUPPORT. X7250 Mr. Royce sent you some sketches suggestions for improving this, last night. He now instructs us to send a further… | ||
| Scan067 | Design drawing for a modified radiator support with annotations. | ||
| View original record | NSCH2778 THIS IS AT PRESENT CYLINDRICAL IN SHAPE. A KELMIT BUSH IS MADE SEMI-CYLINDRICAL OUTSIDE, SEMI-SPHERICAL INSIDE, FITTING INTO THE EXISTING RECESS IN THE TANK BOTTOM PRESSING SHOULD BE SMOOTHED… | ||
| Scan068 | Memo regarding suggestions for improving the S.S. Radiator Support. | ||
| View original record | X7250 H.J. join DA S.S Radiator Support DA1 / 9/12/28 Mr Royce sent you some skeleton suggestion for improving this last night. He now instructs us to send a further proposal — N SCH 2778 herewith —… | ||
| Scan069 | Written note discussing modifications to a radiator support, including changing stud and washer specifications. | ||
| View original record | COPY OF WRITTEN NOTE. X7250 To Hs. from R. Sunday the 9th. Dec. 1928. X7250 Further to my letter of last night, DA. and I worked at the radiator support this morning, and came to the conclusion that… | ||
| Scan070 | Final method for supporting the 'SS' radiator. | ||
| View original record | X. 7250 Hs. from DA. BY. c. to BJ. DA2/M11.12.28. 'SS' RADIATOR SUPPORT. With further reference to the above question we send herewith N.sch.2779, shewing what Mr. Royce wishes to be the final method… | ||
| Scan071 | Analysis of 'Radiator Shiver' vibration on 20 HP and 'SS' models. | ||
| View original record | Bs. DA. FROM R. BY. +7250 R2/M17.12.28. X.7005 X.7380 X.5005 X.7250 20 HP. AND 'SS'. RADIATOR SHIVER. (1) The axle with wheels and springs complete has a definite period on the road. (2) The front end… | ||
| Scan072 | 'SS' 10,000 miles test, specifically regarding a radiator water leak and a silencer pipe issue. | ||
| View original record | G7250 Hs. from DA. DAL/M27.12.28. 'SS' 10,000 MILES TEST. X.8941 X.7230 X.7250 We thank you for the copies of GWH's reports, which we are carefully watching. With reference to the water leakage from… | ||
| Scan073 | 'SS' engine mounting, vibration issues, and alternatives to the standard Phantom chassis. | ||
| View original record | Hs. E. ) FROM R. BY. DA. ) c. to BJ. Wor. c. to SG. C. x7250 R1/M4.1.29. 'SS' ENGINE MOUNTING. X.7005 X.7250 X.7380 We ought to be better off than standard Phantom because we can have what that… | ||
| Scan074 | Tests conducted to reduce engine and body vibrations for an 'SS' engine mounting. | ||
| View original record | To R. from Hs/Rn. c. to BJ. SG. c. to WCr. E. c. to DA. BY. Hs/Rn2/LG12.1.29. Handwritten: 47250, X7005, 47250 'SS' ENGINE MOUNTING. We are now working exclusively on the last 10% of this movement… | ||
| Scan075 | Tests concerning radiator movement, identifying the cause as a sympathetic vibration between the axle and frame periods. | ||
| View original record | To R. from Hs/An. c. to SG. Wor. c. to E. DA. c. to BY. X7250 Hs/Anl/LGS.2.29. RADIATOR MOVEMENT 'SS'. X7005 We have refrained from report piecemeal on our tests on this complaint because we wished to… | ||
| Scan076 | Various tests to reduce radiator movement and engine vibration by modifying subframes and mountings. | ||
| View original record | contd :- -2- exactly over the line of the front subframe brackets and to each end hung a mass of lead equivalent to 200 lbs., or more than the front weight of the body. On the rear we had a test kit… | ||
| Scan077 | Modifications to the body, subframe, and steering to reduce vibration and improve handling. | ||
| View original record | contd :- -3- (7) Our next modification was to single point mount the body in front, prevent it swaying by having light rubber control under the front subframe feet, and connecting the scuttle to the… | ||
| Scan078 | Technical table comparing radiator movement under various engine mounting, body, and ballast configurations. | ||
| View original record | RADIATOR MOVEMENT. | Engine Mounting. | Type of body or ballast. | Body mounting or ballast distribution. | Condition of cross. | % Radiator movement 18-EX 10,000 miles - condition taken as 100% |… | ||
| Scan079 | Graph of torque versus frame deflection for Chassis GIII and GIV with different spring and mounting configurations. | ||
| View original record | CHASSIS No 10 GIII. 1 x----x----x REAR SPRING CHOCKED | CHASSIS GIII STANDARD 2 o----o----o " " FREE READINGS OF θ ARE AVERAGE FOR NS AND OS. OBSS 3 o----o----o REAR SPRINGS CHOCKED CROSS COUPLED. |… | ||
| Scan080 | On cold weather starting tests for 'SS' cars, resulting in the deletion of exhaust heating from production engines. | ||
| View original record | To R. from Hs. c. to Sg. Wor. c. to E. DA. c. to BY. +7250 HS5/LG8.2.29. 'SS' S E C R E T. +7770 We have carried out tests by leaving the SS. cars out all night in 10° to 15° of frost and find that… | ||
| Scan081 | Complaint of radiator shutters opening too rapidly and a suggested improvement. | ||
| View original record | BY. from DA. c. to Sg. Hs. X7250 DA1/M23.2.29. RADIATOR SHUTTERS. X.3499 X.7250 With reference to the complaint of the too rapid opening of the shutters initially, we believe Derby are experimentally… | ||
| Scan082 | Valve control, throttle heating, and carburetter performance for winter conditions. | ||
| View original record | E. from R. Hs. BY. X7250 R2/M25. 2. 29. c. to SG. Wor. DA. c. to PN. CWB. OY. SS. CARBURATION. X 7180 WATER CIRCULATION. X. 7080 X. 7250 X. 7230 Lec. 2675 received of the valve working with shutter… | ||
| Scan083 | Suggestion of having a shutter control on the steering column. | ||
| View original record | Hm. from R. c. to Wor. SG. c. to DA. E. c. to HS. BY. c. to PN. X7250 R4/M5.3.29. SHUTTER CONTROL. X.7250 X.3499 Many thanks for your suggestion of having the shutter control on the steering column.… | ||
| Scan084 | The fan fouling the radiator shutter controls on the 'SS' model and a proposal to lower it. | ||
| View original record | To BY. from Hs. c. to E. x7250 Hs2/LG5. 3. 29. FAN ON 'SS'. x7220 It has been noticed that if the fan belt stretches too much, the fan will foul the radiator shutter controls, also the blades are very… | ||
| Scan085 | Engine mounting tests, detailing road conditions, radiator wobble, and directional instability issues. | ||
| View original record | To R. from E. c. to SG. Wor. Hs. X7250 E1/M12.3.29. SS. ENGINE MOUNTING ETC. X.5005 X.7810 X.7830 X.7250 At the risk of repeating a little of what has already been reported the following notes are… | ||
| Scan086 | The periodic nature of wobble in chassis, detailing tests with different engine and radiator mountings. | ||
| View original record | contd :- -2- revaluation of the earlier tried systems, in particular the first strip rubber mounting which was found to be appreciably below the required standard, and was 'written down' from 80% to… | ||
| Scan087 | Two development schemes for improving vehicle damping and frame flexibility. | ||
| View original record | -3- (3) The third conclusion was that logically there were two avenues of development : (a) To utilise the engine to the max. extent to damp the oscillations so that the period would never come up.… | ||
| Scan088 | Road tests concerning wheel diameter, booming noise, engine roughness, and exhaust manifolds. | ||
| View original record | contd :- -4- A run on the test road immediately established this as the most effective modification yet, the chassis riding through without any apparent periodic effects, and with a considerable… | ||
| Scan089 | Experiments with different manifolds, body testing, and frame schemes to address noise and vibration issues. | ||
| View original record | contd :- -5- Regarding the manifold we made one up from welded steel with an expansion box on the lines of the old Silver Ghost, as in sketch -(SEE ORIGINAL FOR SKETCH) but although this was thought… | ||
| Scan090 | Proposing an alteration to a water pipe to improve the drainage of the 'SS' water circulation system. | ||
| View original record | R. from E. X7250 E1/M9.4.29. E c. to SG. Hs. BY. X.7250 X.7180 X.7150 'SS' WATER CIRCULATION DRAINAGE. Regarding the criticism on SS. that the water circulation system is not sufficiently drained, we… | ||
| Scan091 | Modified gland and spring for the 'SS' Water Temperature Regulating Valve. | ||
| View original record | BY. from E. X7250 E2/MA3 .4.29. c. to SG. Hs. 'SS' WATER TEMPERATURE REGULATING VALVE. X.7250 X.7180 We send herewith LeC. 2693 shewing modified gland and spring for the above. This has not yet been… | ||
| Scan092 | Investigation into the cause and remedy for excessive engine cooling water loss on the S.S. Chassis. | ||
| View original record | x7250 To R. from Hs/AJL. c. to SG. Wor. c. to E. DA. c. to BY. Hs/ AJL1/LG17.4.29. S.S. CHASSIS. LOSS OF ENGINE COOLING WATER. Reports have been received from France of excessive loss of engine… | ||
| Scan093 | Two-part construction and correct water level for the 20 HP radiator, recommending a modification for S.S. radiators. | ||
| View original record | contd :- -2- to the 20 HP. radiator, viz: in two parts. One part soldered into the top tank, the second bolted to a boss on the rear outside of the top tank and clipped to the radiator side plates.… | ||
| Scan094 | Blueprint illustrating the correct and present positions for S.S radiator overflow pipes. | ||
| View original record | S.S RADIATOR OVERFLOW PIPES. CORRECT POSITION PRESENT POSITION 3" 14" A---B C---D A.B:- WATER LEVEL AT 80°C. C.D:- EQUIVALENT LEVEL AT 15°C CORRECT POSITION PRESENT POSITION. JLS | ||
| Scan095 | Heavily faded document page with a purple date stamp from Derby. | ||
| View original record | [Main body text is illegible] [Stamped text]: LIMITED 16 APR 1929 DERBY. | ||
| Scan096 | Investigation into the cause of engine cooling water loss on the S.S. Chassis, with a proposed remedy. | ||
| View original record | To R. from Hs/AJL. c. to SG.H C. to S.B. C. to BY. Handwritten Note: AH Please see me tomorrow R Hs/ AJL1/LG17.4.29. Handwritten Initials: J.C. Stamp: [Circular Stamp] Received 18 APR 1929 S.S.… | ||
| Scan097 | Recommendation for a two-part overflow pipe for the 20 HP radiator, with notes on the correct water level. | ||
| View original record | contd :- -2- to the 20 HP. radiator, viz: in two parts. One part soldered into the top tank, the second bolted to a boss on the rear outside of the top tank and clipped to the radiator side plates.… | ||
| Scan098 | Persistent issue of engine cooling water loss on the S. S. Chassis during testing. | ||
| View original record | x7250 Sg.1/WT19.4.29. S/W. Hs....from Sg. S. S. Chassis. Loss of Engine Cooling Water. I notice from your Hs/AJLL/LG.17.4.29 that an excessive loss of engine cooling water is still being experienced… | ||
| Scan099 | Investigation into the loss of engine cooling water on the 'SS' chassis. | ||
| View original record | To Sg. from Hs. X7250 Hs1/LG22.4.29. 'SS' CHASSIS. X7720 LOSS OF ENGINE COOLING WATER. Replying to Sgl/WT19.4.29. The reason for the loss of water on the SS. was investigated sometime ago. Tests then… | ||
| Scan100 | Design of a radiator overflow pipe to prevent water loss. | ||
| View original record | SECRET. X7250 Hs. RV. } From R. E. DA. } (At Le Canadel. R2/M23.4.29. Rec'd at WW. 27.4.29. c. Sg. Wor. PN. CY. SS. RADIATOR. It is good to find that the cause of the loss of water is the unfortunate… | ||
| Scan101 | Necessity of automatic water temperature control for the S.S. model to ensure consistent performance and good acceleration. | ||
| View original record | To R, from Hs. c. to SG. Wor. c. to E. DA. c. to BY. X7250 Hs2/LG1.5.29. X3499 S.S. WATER TEMPERATURE CONTROL. ============================ Although we are against fitting any unnecessary… | ||
| Scan102 | Letter discussing radiator choking due to water pump over-lubrication, and requesting steering tests with varying tyre pressures and types. | ||
| View original record | x7250 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby, Angleterre. Hotel de france, Chateauroux, Indre France. +7941 Mr. Hancock from Hs/Rn. Hs/Rml/LG2.5.29. We are having quite a number of complaints of… | ||
| Scan103 | Brake arrangements, including linings, cams, levers, and modifications to reduce front braking. | ||
| View original record | contd :- -2- With regard to the brakes. We have found over here that we get highly satisfactory brakes with the following arrangement : (1) Woven cotton servo linings. (2) 45º cams. (3) Brake pedal… | ||
| Scan104 | Advantages of thermostat-operated shutters over hand-operated ones for water temperature control. | ||
| View original record | X7250 To Hs. from Sg. re Water Temperature Control. Sg2/E3.5.29 I have read with great interest Hs2/LG1.5.29 and Hs/TsnL/LG1.5.29, and I am very pleased to note you say that you prefer the Thermostat… | ||
| Scan105 | Confirming agreement to modify the position of water pipes on the J.2 Series SS radiator. | ||
| View original record | BY/GS (struck through) c. Hs. X7250 BY3/G.6.5.29. J,2 SERIES - RADIATOR. Will you kindly note that DA. is in agreement with the suggestion that we should modify the position of the water pipes on the… | ||
| Scan106 | Need for a manual override on the thermostatic shutter control. | ||
| View original record | X7250 S/W. Hs....from PN. PN.4/WT8.5.29. THERMOSTATIC SHUTTER CONTROL. In this connection we have always realised when discussing the subject that a over-riding hand control would be desirable in… | ||
| Scan107 | Customer use of anti-freezing mixtures in engine cooling systems. | ||
| View original record | S/W AE Y7250 PN.... from H. copy to Sg. Hs. Hm. H12/LH10.5.29. ENGINE COOLING AND WATER CIRCULATION. --------------------------------------- With reference to PN1/WT10.5.29. and Hs/NM's suggestion… | ||
| Scan108 | Comparing the radiator cooling performance of the 'SS' car against previous Phantom models. | ||
| View original record | X7250 To R. from Hs/Rn. c. to Sg. Wor. c. to DA. E. c. to PN. OY. c. to BY. Hm. Hs/Rml/LG27.5.29. X766 X8250. COOLING ON 'SS' CARS. In view of the fact that the cooling of the SS. has been criticised,… | ||
| Scan109 | High-speed cooling tests, comparing bonnet ventilation and radiator temperatures under different conditions. | ||
| View original record | contd :- -2- for hill climbing than any 40/50 HP. car we have previously had. We know that the specific complaint was that the car over-heated at high speeds. We have repeatedly proved that high speed… | ||
| Scan110 | Car overheating in hot weather, discussing the benefits of bonnet ventilation on SS and Phantom models. | ||
| View original record | contd :- -3- It will be thus seen that in both cases the SS. car shews up substantially better than the present standard production chassis. The test, however, emphasises our previous remarks that it… | ||
| Scan111 | Graph comparing engine water temperatures of three car models during a hill climb test at Cat and Fiddle. | ||
| View original record | TEST CAT AND FIDDLE NO BONNET VENTILATION AIR TEMP 15°C HILL EACH CAR CARRIES 3 PASS AND 5 CWT BALLAST ① S.S. CAR 22 EX WT. EMPTY 48.3 CWT ② PHANTOM CAR 14 EX. WT. EMPTY 49.75 CWTS ③ OLD PHANTOM CAR… | ||
| Scan112 | Blank document page with a 'Print Room, Derby' stamp. | ||
| View original record | CE, LIMITED PRINT ROOM, 29 MAY 1929 DERBY. | ||
| Scan113 | Feasibility of fitting the original tapered radiator for car EAC.8 for sales inspection. | ||
| View original record | X7250. Hs. from DA. Copy to Sg. DA/EV3/M7.6.29. 40/50 RADIATOR. You will remember that the original radiator for EAC.8. had taper sides and top tank to conform with the slope of the bonnet. Is this… | ||
| Scan114 | Comparison of water loss between an 'SS' radiator and a standard Phantom chassis radiator. | ||
| View original record | Hs [struck through] from Mx. X7250 Mx6/T12.6.29. "SS" RADIATOR We have made some comparisons between 23-EX and a Standard Phantom Chassis with regard to loss of water. Each radiator was filled to… | ||
| Scan115 | Clarifying a complaint about water loss from an 'S.S.' radiator and suggesting further comparative tests. | ||
| View original record | c. Hs. Y7250 EP5/H13.6.29. re. "S.S." Radiator. With reference to your Mx6/T12.6.29. my complaint in regard to this matter was not so much the loss of water due to boiling, but loss of water due to… | ||
| Scan116 | Modification to make the SS radiator filler cap watertight. | ||
| View original record | BY/HEB. from Hs/AJL. X7250 Hs/AJLL/LG19.6.29. 'SS' RADIATOR. RE. SCH.1160 - MODIFICATION TO MAKE SS. RADIATOR FILLER CAP WATER TIGHT. We prefer the rubber ring method of the two schemes shewn. This… | ||
| Scan117 | Issues with choked radiators and recommendations for new radiator tube specifications. | ||
| View original record | To BY. from Hs/Rn. c. to Wor. filing (handwritten) x7250 (handwritten) Hs/Rn. 2/MJ. 24.7.29. x7250 (handwritten) x766 (handwritten) S.S. RADIATOR TUBES. In view of the trouble that has arisen with F.2… | ||
| Scan118 | Issues with Phantom radiators becoming choked in service. | ||
| View original record | PLEASE FILE FOR REFERENCE X7250. HS/Rm. 2/MJ. 25.7.29. R. from HS/Rm. c. to S. c. to DA. c. to BY. c. to UM. Not Circulated RADIATORS. ---------- Recently we have received a several number of… | ||
| Scan119 | Radiator testing, lubrication issues, and material analysis. | ||
| View original record | -2- We have carried out a simple test comparing V series, F.2 B series and S.S. radiators. The test is crude and comparative only, but it does demonstrate that as we have made our radiators shallower,… | ||
| Scan120 | Improvements to vehicle cooling systems, focusing on radiator tubes, materials, and summarizing problems with solutions. | ||
| View original record | -3- [Handwritten]: it would be [Handwritten]: advisable In view of all the facts, we think we ought at once to use 7/5½ m.m. tubes in the S.S. radiator to decrease the hydraulic restriction of the… | ||
| Scan121 | Comparison of S.S. radiator performance with variations in tube dimensions and water circulation rates. | ||
| View original record | -4- Variation in hydraulic restriction between radiators made to the same drawing. Careful check on soldering and compression with which tubes erected. Improved methods of testing finished radiator.… | ||
| Scan122 | Laboratory report on the analysis of corrosion products from a badly corroded radiator. | ||
| View original record | HM/NRC. c. to BY. Extract from- H15/EA6.5.29. Laboratory. Report No. L1501. Re Radiator Corrosion. We have analysed the sample of the corrosion products taken from the radiator which was badly… | ||
| Scan123 | Graph showing the effect of temperature on water circulation through an S.S. Radiator at various pump speeds. | ||
| View original record | EFFECT OF TEMP ON CIRCULATION THROUGH S.S. RADIATOR 6/7 M/M TUBES. STANDARD S.S. PUMP CIRCULATES WATER THROUGH A HEATING TANK AND THE S.S. RADIATOR. CIRCULATION GALL/MIN. PUMP R.P.M. Graph Data… | ||
| Scan124 | Technical drawing detailing the dimensions of radiator matrices and tubes for various models. | ||
| View original record | 13.6.29 RADIATOR MATRIX AND TUBE DIMENSIONS MATRIX DIAGRAM LABELS: A, B, C, D, E TABLE DATA: COLUMN HEADERS: INDEX, S.S E.77675, STANDARD PHANTOM F.77644, EARLY PHANTOM E.73892, BUMP ?, E.77047 10 EX.… | ||
| Scan125 | Blueprint of an apparatus with dimensional annotations. | ||
| View original record | TOP OF MATRIX 3'6" 5'0" ROLLS-ROYCE LTD. HINTON IN THE HEDGES 25 JUL 1945 DERBY | ||
| Scan126 | Sending car 10-EX to have its choked radiator replaced and its front axle inspected for damage. | ||
| View original record | To Hm. From Hs/Rm. X7250 Hs/Rm.4/MJ.25.7.29. 10-EX car has been handed over to us by Sales as being a good sample of a choked radiator. The arrangement of the radiator is E76044 and we understand that… | ||
| Scan127 | Complaints and solutions for choked radiators. | ||
| View original record | To R. from HS/RM. C. to SS. WoF. C. to E. DE. C. to SY. X7250 Hs/RM/MJ. 26.7.29. X7250 x766 RADIATORS. ---------- We have received several complaints of Radiators becoming choked in service. These are… | ||
| Scan128 | Page 2 of a document discussing the hydraulic restriction and cooling efficiency of a gap radiator matrix. | ||
| View original record | -2- gap radiator. The hydraulic restriction of the matrix is much reduced. From our experience we are sure that increasing this gap will not reduce the cooling efficiency of the matrix. HS. | ||
| Scan129 | Blueprint detailing the dimensions for various radiator matrix and tube models. | ||
| View original record | RADIATOR MATRIX AND TUBE DIMENSIONS MATRIX DIAGRAM LABELS: A, B, C, D, E TABLE: INDEX | S.S E.77675 | STANDARD PHANTOM F.77644 | EARLY PHANTOM E.73892 | BUMP ? | E.77047 10 EX. A. | 24.0" | 24.25" |… | ||
| Scan130 | Blueprint detailing radiator matrix and tube dimensions for various models. | ||
| View original record | X739 RADIATOR MATRIX AND TUBE DIMENSIONS DIAGRAM LABELS: Matrix A. B. C. D. E. TINNING LENGTH .300 STAMP: ROLLS-ROYCE LIMITED PRINT ROOM 4 FEB 1930 DERBY TABLE OF DIMENSIONS: | FINAL * S.S F.79448 |… | ||
| Scan131 | Suggesting modification to the holes in the baffles of an S.S. radiator to reduce restriction. | ||
| View original record | x7250. To BY. from Hs/Rn. c. to Wor. Da. filing Hs/Rn. 6/MJ. 25. 7. 29. There appears to be an unnecessary amount of restriction in the bottom water tank of the S.S. radiator due to the size of the… | ||
| Scan132 | Recommending pass/fail criteria for radiator flow rate tests and suggesting improvements to the testing apparatus. | ||
| View original record | To Wor. from Ha/Rn. e. to Mr. c. to Hm. Handwritten: X7250 / File Copy Ha/Rm1/MS27.7.29. Handwritten: X7250. X8250. RADIATOR TESTS. As a result of testing half a dozen Phantom and S.S. radiators on… | ||
| Scan133 | Comparative test of S.S. radiator tubes and a subsequent recommendation. | ||
| View original record | X7250 To R. from Hs/Rm. Copy to SE. Wor. Ey. Da. Oy. Hm. E. Hs/Rm3/BE7.8.29. X7250 X766 S.S. RADIATORS. We have made a careful comparative test of the 6/7 mm. tubes and the 5 1/2/7 mm. tubes on the… | ||
| Scan134 | Diagnosis and method for clearing clay-like obstructions from overheating radiators. | ||
| View original record | To R. from Hs/Rm. X7250 c. to Sg. E. c. to Ne. Hy. c. to Wor. Hm. c. to Ov. HS/Rm3/MJ12.8.29. RESTRICTED WATER CIRCULATION. X 7250 X 7180 Examination of radiators from recent series cars that have… | ||
| Scan135 | Preventing corrosion in water cooling systems by using soft water and specific alloys. | ||
| View original record | -2- and therefore relief should be obtained by the use of soft water. Also T 50 L., alloy appears to be a big improvement and will help us in the future. However, since a similar trouble to a reduced… | ||
| Scan136 | Comparative testing of 5 1/2 x 7mm and 6 x 7mm radiator tubes for the F.2.B series. | ||
| View original record | X7250. To Hm. from Hs/Rn. c. to WOP. BY. Hs/Rn. 8/MJ.13.8.29. X7778. X7250. With reference to your Hm14/W12.8.29. If BY. will order the necessary tubes we will make a definite comparative test for… | ||
| Scan137 | Sending advance information regarding the cleaning of radiators ahead of a formal Depot Sheet. | ||
| View original record | To Ps.Paris. from Hs/Rm. filing X7280. Hs/Rm.5/MJ.14.8.29. X1066. I send you herewith information on cleaning radiators, which will be circulated as Depot Sheet in due course. We are however, anxious… | ||
| Scan138 | Depot sheet detailing the cause and remedy for restricted water circulation in radiators. | ||
| View original record | To Hm. from Hs/Rn. Depot sheet. Hs/Rn.6/MJ.13.8.29. RESTRICTED WATER CIRCULATION. Examination of radiators from recent series cars that have suffered from over-heating indicates that the obstruction… | ||
| Scan139 | Radiator obstruction, corrosion, cleaning methods, and a proposed test rig. | ||
| View original record | -2- that a similar obstruction of the top tubes takes place in a longer period of time; so that these can also be treated with advantage to reduce over-heating. If clearing the radiators of aluminium… | ||
| Scan140 | Radiator restriction tests, comparing water flow quantities for different radiator types. | ||
| View original record | RADIATOR RESTRICTION TESTS. A tank of 20 gal. capacity supplied water to the radiator from a head of 3 ft. 6 ins above the top of the matrix. (See Sketch.) The quantity of water delivered direct… | ||
| Scan141 | Blueprint of a Radiator Test Rig. | ||
| View original record | REPLENISHING SUPPLY FROM THE MAIN 1 3/16 BORE. TOP OF MATRIX 3'6" 5'0" 1 3/16 BORE. RADIATOR TEST RIG. | ||
| Scan142 | Stamped document from the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 14 AUG 1929 DERBY. | ||
| Scan143 | Issues with car cooling systems, specifically radiator obstructions and hydraulic restrictions on S.S. versus V series models. | ||
| View original record | X 7250 To E. from He/Rm. c. to Da. Hs/Rm2/MJ/21.8.29. X7250 X766 COOLING SYSTEMS. There are one or two facts in connection with the car cooling systems which have not been circulated. (1) The… | ||
| Scan144 | Cooling system inefficiencies, electrolytic corrosion, and potential design improvements for radiators. | ||
| View original record | -2- This means that even in a new car the system is least efficient when cooling is most required. It explains the phenomena of being unable to cool down easily once the radiator has been brought to… | ||
| Scan145 | Page from a typed report discussing radiator and filter performance. | ||
| View original record | -3- SEE ORIGINAL FOR SKETCH. The resistance of the matrix will ensure that sufficient pressure is put on the grid to force any obstruction out of the filter. (5) One other point we raise is that the… | ||
| Scan146 | Instructions on cleaning a radiator with Kleanwell Solution and a warning about its corrosive effect on aluminium. | ||
| View original record | To Hm. from Hs/Rn. X7250. Hs/Rn.3/MJ.21.8.29. With reference to E.P's query. The radiator only requires treatment. The radiator should be removed from the chassis, inverted and filled with the… | ||
| Scan147 | Comparing different cooling system radiator designs regarding gap size, area, and hydraulic mean depth. | ||
| View original record | HS/RM. FROM DA. C. to EY. T. X7250 DA2/1/24.8.29. COOLING SYSTEMS. X.7250. X.766. With reference to HS/RM2/MJ21829, we think there is still something mysterious about the choking up: (1) The gap seems… | ||
| Scan148 | Aspects of radiator design, including the top tank, tubes, and shutter control. | ||
| View original record | (2) this does not seem an important matter as the hydraulic resistance of this rectangle cannot be a serious factor in itself. As regards the bottom of the top tank overlapping the tubes more in SS.… | ||
| Scan149 | Hydraulic resistance and choking issues in F2B, S.S., and V series radiator cooling systems. | ||
| View original record | To Da. from Hs/Rn. c. to By. E. X7250 Hs/Rm.1/MJ.30.8.29. X7256 X766 COOLING SYSTEMS. With reference to Da2/M24.8.29. RADIATORS CHOKING UP. We do not think that there is any mystery in the fact that… | ||
| Scan150 | Radiator obstruction, comparing F2B series cars with V series cars, and the role of the aluminium head. | ||
| View original record | -2- normal conditions, our main worry at the moment is the increase in this restriction due to obstruction. Opening up radiators has proved that almost invariably this obstruction is confined to the… | ||
| Scan151 | Dimensional drawing for V Series, F2B Series, and S.S. Chassis components. | ||
| View original record | 22 600, V SERIES, E 72740, 3.800, 23 800, F2B SERIES, E 76044, 1.750, 3.600, 23 300, S.S. CHASSIS, E 77675, 2.80, STAMP:, ROLLS-ROYCE LIMITED, AERO ENGINE DEPT., 30 AUG 1939 | ||
| Scan152 | Radiator corrosion and cooling system water treatment for the 40/50 HP 'J-2' Series Chassis. | ||
| View original record | X7250. EY4/N.31.8.29. Re: 40/50 HP. Chassis - Radiators "J-2" Series. ------------------------------------------- In view of the further developments that have taken place, it is not necessary to… | ||
| Scan153 | Standardisation of wider gap radiator tubes to reduce blockage in service. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. Comp. 31.8.29 Date 16. 8. 29. Description of Parts. Wider Gap Radiator Tubes. Origin. To reduce the possibility of radiators becoming blocked in service. F.2.B.… | ||
| Scan154 | Customer complaints and overheating issues related to radiators. | ||
| View original record | x7250 To DA. from HS/Rm. Hs/Rm.1/MJ.27.9.29. X1066 x7250 RADIATORS. ---------- We are not altogether satisfied with the radiator position. Reports from cars in service are so conflicting that it is… | ||
| Scan155 | Radiator design alterations due to corrosion issues from aluminium cylinder heads. | ||
| View original record | -2- Morris. As soon as we have established that the aluminium head is the main cause of the trouble due to the increased electrolytic action which it promotes it appears to hasten corrosion, we think… | ||
| Scan156 | Series of radiator tests for the Phantom II model. | ||
| View original record | x7250. HS/AJL.2/MJ. 28.9.29. PHANTOM ll RADIATOR TESTS. ------------------------- We have carried out a series of tests to compare the efficiency of a Phantom ll radiator fitted with matrix tubes… | ||
| Scan157 | Comparison of cooling performance and silting for two different diameter radiator matrix tubes. | ||
| View original record | -2- speeds to compare the original 7-6 m.m. diam. matrix tubes with the 7-5¼ m.m. tubes. The result of these tests shewed the 7-5¼ m.m. tubes to be slightly inferior to the 7-6 m.m. tubes The average… | ||
| Scan158 | Persistent choked radiator issue on chassis 56-WR belonging to H. Mills. | ||
| View original record | X7250. Sèvres P/W "Hs/Rm" copy W. Ps3/RJ.4/10/29. Re: Choked Radiators Chassis 56-WR - H. Mills You are aware of the several occasions we have attended to this car for choked radiator owing to… | ||
| Scan159 | Letter of complaint from a customer regarding a persistently overheating vehicle. | ||
| View original record | COPY Saussy, par Messigny, Côte d'Or. 28th. 29th. & 30th. Sept. 1929 My dear Parsons, re WR 56. I am sorry not to have had the pleasure of seeing you before my departure Saturday. I left shortly after… | ||
| Scan160 | Use of Staybright and Chromium finishes for various car parts, particularly the radiator. | ||
| View original record | x7280 To By. From Hs. c. Wor. c. Hy. HS.4/ADL4.10.29. X.7770 X.5770 X.7280 X.5250 STAYBRIGHT AND CHROMIUM FINISH. On our last visit to West Wittering we took down numerous samples of staybright parts… | ||
| Scan161 | Cross-sectional drawing, designated Section T.T., of a mechanical component with various dimensions. | ||
| View original record | FSOO69 X/258 DESIGN DRAWING OFFICE 6 NOV 1929 FOR ALL OTHER DIMENSIONS SEE E78918. SECTION T.T. 5.075 -.10 6.260 +1.0 6 BOSSES .550 DIA: 38° DRILL .201 DIA .125 RAD: .225 RAD: .250 +.010 -.000 .1875… | ||
| Scan162 | Sketch comparing the top tank outlet areas to the matrix for the Phantom I and Phantom II models. | ||
| View original record | Please file Under P.II Rad F2 B SERIES D FINAL 6 M/M TO 7 M/M LARGER TUBES 6 M/M TO 7 1/2 M/M 3.650 LENGTH OF GAP 5.750 3.060 23.322 PHANTOM I F2 B SERIES MATRIX DIMENSIONS 22.250 24.500 4.250 K2… | ||
| Scan163 | Scheme for thermostatically operated radiator shutters and requesting a new design for the 20 HP chassis. | ||
| View original record | COPY. X7250 BY. From E. E.1/M5.10.29. c. to Sg. c. to Hs. SS. RADIATOR SHUTTERS. X.7250 X.5250 X.3499 We send you herewith Lec.2750., shewing a scheme for thermostatically operating the radiator… | ||
| Scan164 | 'SS. Radiator Filter' and an associated drawing, Lec. 2753. | ||
| View original record | COPY. Y7250 HS. From E. E.1/M14.10.29. c. to Sg. c. to By. SS. RADIATOR FILTER. X. 7250 X7050 We send you herewith Lec. 2753., shewing a filter R, would like you to try for collecting the sediment… | ||
| Scan165 | List of recommended improved parts for the Phantom II model. | ||
| View original record | To R. From Hs. c. to Sg. c. to WOr. E. c. to Da. Wv. x7250 Hs.6/AD15.10.29. PHANTOM 11. X.7770 X.7600 X7830 X.7940c. X.7250 X7520 X.7950 X.3806 There are a number of improved parts which we recommend… | ||
| Scan166 | Report page discussing potential modifications to luggage grids, radiator filters, central lubrication, and shock absorbers. | ||
| View original record | -2- We consider the present scheme of luggage grid and wheel at the rear should be simplified. (11) Radiator Filter. As regards the trouble we are having with radiators being stopped up, we are not… | ||
| Scan167 | Issues with shock absorber joints, load, and wear rates. | ||
| View original record | -3- can be heard by the passengers in the car. The trouble is not with the ball joints which can be adjusted, but the joints in the shock absorber itself. We hesitate to increase the load on the shock… | ||
| Scan168 | Requesting to test a frame with great vertical stiffness to improve radiator steadiness and steering. | ||
| View original record | DA. From R. x7250 R.3/M26.10.29. c. to Sg. Hs. By. TO IMPROVE RADIATOR STEADINESS AND STEERING. X. 7250 X. 5250 I want to test a frame which has very great vertical stiffness. For Phantom ll it would… | ||
| Scan169 | Issue of radiator silting and proposing a meeting to determine further preventative action. | ||
| View original record | X7250 HS To Wer. from Sg. Copy to EX. HS. BC. re Silting up of Radiators. Sg26/EV.11.29 Referring to H.1./EJW/8.11.29 and my discussions with you when at Derby last week, I was very much interested to… | ||
| Scan170 | The silting up of radiators, proposing a switch to cast iron heads on the Phantom II. | ||
| View original record | X7250 To Wor. from Hs. Hs3/AD14.11.29 RE : SILTING UP OF RADIATORS. (1) At the moment the only permanent cure we know of is to go to the cast iron head. Although one hates the additional weight, we do… | ||
| Scan171 | Instruction to stop work on Phantom II thermostatically operated radiator shutters due to a supply issue. | ||
| View original record | RHC. c. Wor. x7250 BY/Cghll/G.22.11.29. RE PHANTOM 11. THERMOSTATICALLY OPERATED RADIATOR SHUTTERS. With reference to RHC1/BE.21.11.29. we have just received information from R.R.A.I. that the Fulton… | ||
| Scan172 | New, cleanable radiator design for testing. | ||
| View original record | E. DA.) FROM R. HS. BY.) COPY. X7250. R.1/M25.11.29. c. Sg. Wor. c. C. X. 8250 X. 7250 X. 5250 X. 4516 CAR RADIATORS. I am sending you a sketch of another way of building up a radiator for test, in… | ||
| Scan173 | Conference decision to instruct 40/50 HP chassis users to add Sodium Phosphate to their radiator systems. | ||
| View original record | X7250 To. Wer. [struck through] c. Hs. BY10/N.26.11.29. Re: Radiator Troubles. -------------------- At a conference in my office present:- Hs. Hl. Hm. Hs/Rm. Sft. BY. It was definitely decided that it… | ||
| Scan174 | Requesting the correct chemical symbol and weight for Sodium Phosphate to be used in radiator cooling water. | ||
| View original record | X-7250. Hs. BY15/N.26.11.29. Re: Radiator Troubles. Will you kindly let me have the correct symbol in which to order the Sodium Phosphate for use in our cooling water(dehydrated form) as I am doubtful… | ||
| Scan175 | Specifications and required alterations for Phantom II radiators. | ||
| View original record | X7250 RHC. From Hs/Rm. Hs/Rm. 2/MJ.3.12.29. PHANTOM 11 RADIATORS. --------------------- The standard radiator tubes are E.79448. These give 1 1/4 m.m. gap between the tubes. All the original radiator… | ||
| Scan176 | Tests to determine the effects of outlet pipe restriction on radiator cooling efficiency. | ||
| View original record | x7250. LOSS OF WATER FROM RADIATORS. x7250 x766 x4576 Tests were carried out to determine what restriction could be put in the outlet pipe from the cylinder block without impairing the cooling… | ||
| Scan177 | Radiator silting and water loss in Phantom II cars, recommending a change to the red warning light's operating temperature. | ||
| View original record | X7250 To Ev. From Hs/Rn. c. to Sales. Hs/Rn5/MJ.7.12.29. X4516 X7250. We have recently come to the conclusion that radiator silting up is aggravated if the car is run with the top row of tubes above… | ||
| Scan178 | Tests comparing radiator performance with a 33% Glycerine and water mixture versus pure water during hill climbing and high-speed driving. | ||
| View original record | X 7250. Hs/Rm.12/12.29 V 5250. X 7250 X 4516. ANTI FREEZING MIXTURES. Tests have been carried out on 20 HP. radiator comparing the mixture of 33% Glycerine and water, and pure water. As will be seen… | ||
| Scan179 | Radiator jellying and the proposed stiffening of the Phantom II frame. | ||
| View original record | X7250 To Da. From Hs/Rm. Hs/Rm.2/MJ.18.12.29. RADIATOR JELLYING. X7250. X7380. During the last visit to W.W. we understand that the question of stiffening up the front of the Phantom II frame was… | ||
| Scan180 | Responding to a query about radiator jellying and confirming that drawings for an approved proposal will be sent soon. | ||
| View original record | HS/RM. FROM DA. X7250. DA1/M20.12.29. RADIATOR JELLYING. Replying to HS/RM2/MJ181229., we do not know what was discussed at the last visit to WW., and if anybody who was present could tell us whether… | ||
| Scan181 | List of information required on the existing water system for a Phantom II steam cooling installation. | ||
| View original record | To. RM- for LR FILE UNDER RADIATORS x7259 Phantom II (Steam cooling installation) Information Required on existing water system 1. Frontal area. 2. Cooling Surface. 3. dia. & length of tubes. 4.… | ||
| Scan182 | The shipment of Sylphon tubes for Phantom II radiator thermostats. | ||
| View original record | Hs. C. ROY. X7250. BY/Cgh18/G. 23.12.29. RE THERMOSTATS FOR PHANTOM II RADIATOR. With reference to the Sylphon tubes which we have ordered from America for making up thermostats for the above, we have… | ||
| Scan183 | Letter from Rolls Royce of America confirming an order for six thermostat assemblies from The Fulton Sylphon Company. | ||
| View original record | ACR-9880 December 9th, 1929 Rolls-Royce, Limited Derby, England. Attention: Mr. R. W. Harvey Bailey Gentlemen:- We have ordered from The Fulton Sylphon Company the six thermostat assemblies that you… | ||
| Scan184 | Testing the force required to operate radiator shutters and proposing geometry changes. | ||
| View original record | R. FROM E. C. to SG.HS.BY. X7350 E4/M24.12.29. X.3499. X.7250. X.5250. RADIATOR SHUTTERS. We have disconnected the manual control of the shutters on the 20HP. RR. at WW. and tested them with a spring… | ||
| Scan185 | Corroded and leaking aluminium tubes in Phantom cylinder heads, suggesting trials of different materials and anodical treatment. | ||
| View original record | X7250. To BY. From Hs. c. to WOT. Hs.S/MJ.27.12.29. ALUMINIUM TUBES IN PHANTOM CYLINDER HEAD. X7050 X7250. We have received some further aluminium tubes from Paris which have corroded and leaked. We… | ||
| Scan186 | Proposal and cost for experimenting with square tube radiators on the Phantom II. | ||
| View original record | x7250 To BY. from ROY. c. to WOF. c. to Hs. ROY5/MG31.12.29 ------------------ The proposal to experiment with Radiators built up with square Tubes instead of our present standard Round will cost, as… | ||
| Scan187 | Issues with cylinder head tubes and the detrimental effects of using Sodium Phosphate in the radiator. | ||
| View original record | x7250. To Ps. From Hs/Rm. Hs/Rm.5/MJ.1.1.30. CYLINDER HEAD TUBES. X4516. x7250. We are sorry that you have had trouble with the cylinder head tubes, and agree that the condition of those which you… | ||
| Scan188 | Loss of water issue and cylinder head tube trouble on chassis 56-WR, suspected to be caused by excessive Sodium Phosphate. | ||
| View original record | To Ps. From Hs/Rn. c. to Hl. X7250. Hs/Rn.6/NU.1.1.30. X4516 X7250 We have just turned up your note Ps3/RJ4.10.29., referring to chassis 56-WR. H. Mills. We think this is clearly a case of loss of… | ||
| Scan189 | Dissatisfaction with the 'wingle guide' for the Phantom radiator shutter thermostat and proposing a new double guide design. | ||
| View original record | R. FROM E. 87250 E3/M2.1.30. X.3499 X.7250. C.to SG. C.to BY. C.to HS. re. PHANTOM RADIATOR SHUTTER THERMOSTAT. Referring to LeC. 2773. shewing radiator shutter scheme, we are not satisfied with the… | ||
| Scan190 | Cancelling a modification to the radiator inlet flange due to leaks caused by back pressure. | ||
| View original record | To RHC. From Hs/Rm. X7250 Hs/Rn.3/MJ.3.1.30. RADIATOR INLET FLANGE. X7250 X4521 With reference to the radiator inlet flange with reduced outlet to Hs.252 which we instructed in our Hs/Rn2/29.11.29. We… | ||
| Scan191 | Request to modify an obsolete radiator from flow tests for a Phantom II test car. | ||
| View original record | To RHC. From Hs/Rm. A 7250. Hs/Rm.1/MJ.6.1.30. X7250 X4521. We wish to fit a lighter radiator to a Phantom 11 car for test purposes. Will you please take the radiator at present being used by W. Bell… | ||
| Scan192 | Blueprint detailing a light radiator for an experimental test. | ||
| View original record | Hs 253 TINNED THIN SHEET 16.0" LIGHT RADIATOR. EXP TEST | ||
| Scan193 | Heavily faded document page with a purple ink stamp from the printing department. | ||
| View original record | Stamp: ROLLS PRINT. DEPT 16 JAN 1930. The main body of text is illegible. | ||
| Scan194 | Tests conducted on water pump cavitation for radiators. | ||
| View original record | X7250 To R. from Hs/Rm. c. to Sg. Wor. c. to E. Da. c. to Ry. Rg. c. to Lr. HS/Rm3/MJ10.1.30. X5250 X7250 X 4516 X 766 RADIATORS. With reference to Rl1/M16.12.29. We have carried out a number of tests… | ||
| Scan195 | Report page detailing the function and limitations of a radiator's cooling cycle, including cavitation. | ||
| View original record | -2- Hs/Rm3/M10.1.30 contd. appertained at the point before cavitation started. In agreement with this, the depression on the suction side of the pump also remains constant. The cycle appears to be… | ||
| Scan196 | Analysis of radiator performance, hydraulic resistance, and cooling system limitations for the Phantom II. | ||
| View original record | Hs/Rm3/MJ10.1.30 contd. -3- present standard S.S. large gap radiator. In considering this it must be borne in mind that the drop across the radiator is about 10°C. and that therefore the highest… | ||
| Scan197 | Engine cooling circulation issues, radiator choking, and potential solutions. | ||
| View original record | -4- Hs/Rm3/MJ10.1.30 contd. standard (Graph 4 and 1 Hs/AJL1.9.1.30). These show that the circulation cannot be reduced very much. They also show than any such restriction must not be put on the far… | ||
| Scan198 | Report summarizing radiator design test results, including comparisons with Chrysler, cavitation findings, and shutter weight. | ||
| View original record | Hs/Rm3/MJ10.1.30 contd. -5- at the rear of the top tank (See sketch). We attach a list of radiator weights. The Chrysler succeed in cooling their car with a very small matrix, but nevertheless our own… | ||
| Scan199 | Comparative table of radiator specifications. | ||
| View original record | RADIATOR. Series & Piece No. Tube Dimensions & Piece No. Hydraulic Resistance on Rig Time for 60 galls. Wt. Rad. Empty. Wt. Rad. Full. V. Series E73892/3. E.18491 8 - 7 mm. 100 secs. 126.5 Water… | ||
| Scan200 | Tests conducted on the Phantom II water cooling system to determine the effect of temperature and restriction. | ||
| View original record | To R. From Hs/AJL. c. to SS. WOR. c. to E. Da. c. to RV. X7250. Hs/AJL.1/W.13.1.30. 152 F X766 X7250. PHANTOM II WATER COOLING SYSTEM. Several tests have been carried out to determine the effect of… | ||
| Scan201 | Engine cooling system performance, focusing on cavitation and pressure effects from a restriction valve. | ||
| View original record | -2- HS/AJL.1/GRL.1/13.1.30.Contd. system over 2300 r.p.m., when this takes place, the flow does not cease altogether but is only reduced slightly from what it would be were there no cavitation. As… | ||
| Scan202 | Graph showing the effect of temperature and restriction on water flow and suction side depression in a Phantom II cooling system. | ||
| View original record | PHANTOM II COOLING SYSTEM. EFFECT OF TEMPERATURE AND RESTRICTION ON WATER FLOW AND SUCTION SIDE DEPRESSION. RESTRICTION USED IS A PLATE DRILLED WITH ONE HOLE G DIAM. PLACED IN THE DELIVERY PIPE JOINT… | ||
| Scan203 | Graph showing pressure in the Phantom II cooling system against engine RPM with different nozzle and valve configurations. | ||
| View original record | PHANTOM II COOLING SYSTEM PRESSURE IN WATER JACKETS AND RUBBER JOINTS DUE TO RESTRICTED DELIVERY NOZZLE AND RESTRICTION VALVE IN TOP WATER PIPE TO LE C 2675. THE RESTRICTED DELIVERY NOZZLE HAS REDUCED… | ||
| Scan204 | Graph showing water flow and suction side depression for a Phantom II cooling system with varying temperatures and nozzle restrictions. | ||
| View original record | PHANTOM II COOLING SYSTEM. 5 1/2-7m/m MATRIX TUBES (19Ex) WATER FLOW AND SUCTION SIDE DEPRESSION FOR VARYING TEMPERATURES AND WITH AND WITHOUT RESTRICTED DELIVERY NOZZLE Y-AXIS: WATER FLOW THROUGH TOP… | ||
| Scan205 | Graph showing the effect of temperature and a restricted delivery nozzle on water flow for a Phantom II cooling system. | ||
| View original record | PHANTOM II COOLING SYSTEM. EFFECT OF TEMPERATURE AND RESTRICTED DELIVERY NOZZLE ON WATER FLOW. 5 - 7 1/2 m/m MATRIX TUBES ON 19 EX WATER FLOW THROUGH TOP WATER PIPE (GALLS/MIN) ENGINE R.P.M. STANDARD… | ||
| Scan206 | Requesting modifications to the Phantom II thermo-operated shutters. | ||
| View original record | R. FROM E. X/7250 E1/M14.1.30. C. to SG. BY. HS. DA. PHANTOM 2. THERMO: OPERATED SHUTTERS X.7250. X.3499. It should be understood that we are asking for .125 to be added to the overall thickness of… | ||
| Scan207 | Requesting the results of an investigation into a 'jellying' issue on a Trials Sedanca car. | ||
| View original record | To Hs. from Sg. Copy to FHy [Struck through] re 1-WJ. Trials Sedanca. Sg2/E21.1.30. +7250. [Handwritten] I understand that this car is now with you. I shall be very much interested to hear the result… | ||
| Scan208 | Short trial of the 20/60 Vauxhall, focusing on radiator wobble and engine smoothness. | ||
| View original record | HS. FROM E. C. to SG. R.(held up) re. RADIATOR WOBBLE X.7250 C. to WOR. BY. DA. AND ENGINE SMOOTHNESS. X.3995 X.457 Yesterday (Sunday) I made a short trial of the latest 20/60 Vauxhall. You will… | ||
| Scan209 | Radiator movement and frame rigidity in relation to the steering box and front spring shackles. | ||
| View original record | (2) for the Marles steering box, the net result being quite a nice car, but still too much radiator movement, as when you tried my car. It is significant that this radiator movement has now been… | ||
| Scan210 | Potential solutions to a radiator shimmy problem on Phantom models. | ||
| View original record | R. FROM DA. (held up.) X7250 DAL/1429.1.30. C. to SG. WOR. C. to HS. BY. E. RADIATOR SHIMMY. X.457 X.7250 X.7380 The lines on which we are working on this problem are, stiffening the front end of the… | ||
| Scan211 | Design revisions to the radiator, bonnet, and dash for Sir Henry Segrave's Phantom II. | ||
| View original record | To Sg. From EV. c. to C. Hs. By. x7250. EV1/31.1.30. RE: REVISED RADIATOR BONNET & DASH. SIR HENRY SEGRAVE. PHANTOM II. X.7250 X.7260 X.7500 X.7770 I saw this car at the Weymann Works last night. I… | ||
| Scan212 | Modified dashboard shape for Continental Touring Cars. | ||
| View original record | -2- In the course of the next two days we will send XXyou to Derby the modified shape of dashboard. The modification is quite simple, the radiator being unchanged. For Continental Touring Cars. EV. | ||
| Scan213 | Tabular record of test times, part numbers, and gap sizes for various chassis. | ||
| View original record | x7250. TIME FOR 60 GALLS. TUBE PIECE NO. GAP SIZE. CHASSIS NO. WHEN BROUGHT UP TO DATE. 105 18-EX. 1.12.29. E77675 5 1/2 / 7 19-EX. E77675 5 1/2 / 7 20-EX. E79448 6 / 7 1/2 21-EX. 104 E79448 22-EX.… | ||
| Scan214 | Radiator cooling performance, including frontal area, bonnet ventilation, and fan specifications. | ||
| View original record | x7250 To Lr. From Hs/Rn. Hs/Rn.1/WJ.4.2.30. FRONTAL AREA, COOLING SURFACE, TUBE LENGTH & DIAMETER. x7250 x4516 We have had various frontal areas at different times and the attached sheet shews some… | ||
| Scan215 | Solution for radiator jellying on the 40/50 chassis using a Diabolo rubber support. | ||
| View original record | x7250. BY. From Hs/Rn. c. to Wor. Hs/Rn. 2/MJ.5.2.30. RADIATOR JELLYING 40/50. x7940 x7250 x4516 We believe that the Diabolo rubber radiator support will help us to reduce this trouble, as the present… | ||
| Scan216 | Issues with the Phantom II radiator filler cap seal and proposing modifications. | ||
| View original record | X7250- To E. From Hs/AJL. c. to EY. EP. c. to MX. Hs/AJL.2/M.7.2.30. PHANTOM II RADIATOR FILLER CAP. The method of sealing the Phantom II radiator cap with a soft rubber ring is not giving very… | ||
| Scan217 | Blueprint showing a modification for a Phantom II radiator filler cap. | ||
| View original record | RADIATOR FILLER CAP MODIFICATION PHANTOM II UNDERCUT 2.360 DIA X .150 WIDE RADIATOR CAP ALL OTHER DIMENS.NS AS ON E-70868 1.900 DIA 1.900 2.350 DERMATINE WASHER .125" THICK | ||
| Scan218 | Design of the bonnet and radiator for the Phantom model. | ||
| View original record | X7250 TO SG. FROM EV. COPY TO C. BY. HS. RE REVISED BONNET AND DASH PHANTOM "." EV2/10.2.30. X.7250 X.7260 X.7500 X.7830 We agree that the Seagrave bonnet and dash were not a success. We thought that… | ||
| Scan219 | Modifications to radiator and bonnet design, referencing the 'Segrave Experiment'. | ||
| View original record | (2) To counteract this, coachbuilders are cutting down the headroom by 1.000 ins. and so cramping the rear seats. Secondly, we have always been inferior in this respect to many other people due to the… | ||
| Scan220 | Causes of radiator shimmy on the Phantom II, evaluating suspension options and suggesting experiments. | ||
| View original record | To Hs/Rn. From EV. COPY TO BY. DA. SG. x 7250 EV.3/10.2.30. X.457 X.7250 X.7005 X.7380 RADIATOR SHIMMY. With reference to your Hs/Rn. 2/MJ.6.2.30. suggesting that we should change to harder rubber… | ||
| Scan221 | Proposed modification to a chassis to cure radiator shimmy, including a sketch. | ||
| View original record | -2- pillars and the dash flanges to act as dampers. We prefer this scheme to the one suggested by DA. for the following reasons - (1) It is easier to fit into an existing chassis. (2) The support is… | ||
| Scan222 | Use of harder rubber for semi-isolation pieces to address radiator shimmy. | ||
| View original record | DA/EV. From Hs/Rn. C. to EV. Da. C. to SG. X7250 Hs/Rn.2/WJ.11.2.30. RADIATOR SHIMMY. X.7250 X.7830 X.7005 With reference to EVS/10.2.30. The reason we asked for a somewhat harder rubber for… | ||
| Scan223 | Revised bonnet and dash design for the Phantom II, including radiator modifications. | ||
| View original record | To EV. From Sg. c. to C. By. Hs. N250 Sg17/E13.2.30. Re. Revised Bonnet and Dash Phantom 11. X.7500 X.7260 X.7250 X.7830 X.7770 I am in receipt of EV2/10.2.30. It does not seem to have been the… | ||
| Scan224 | Various schemes to cure 'radiator jellying', requesting sketches for a single point body mounting solution. | ||
| View original record | BY. From He/Rn. x 7250 Hs/Rn.3/MJ.15.2.30. x457 y7380 x7250. RADIATOR JELLYING. Of the various schemes which have been got out by Da. and Ev. curing this trouble, the one we are most anxious to try is… | ||
| Scan225 | Tests for a problem known as 'frame jellying', focusing on shock absorber mounting. | ||
| View original record | RIC. From Hs/Rn. x7250. Hs/Rn.4/MJ.15.2.30. x457 x7380 x7250. FRAME JELLYING. In reviewing our tests of this problem we find that the most promising experiment in hand appears to be that of mounting… | ||
| Scan226 | Outlining the methods of observation used to study the phenomenon of 'frame jellying'. | ||
| View original record | To R. From Hs/Rm. (Held up). c. to Sg. Wor. c. to Rg. E. c. to SY. Da. c. to OY. XP. c. to Hn. Mx. c. to PN. x7250 Hs/Rn.1/MJ.19.2.30. X457 X7380 x7250 FRAME JELLYING. METHODS OF OBSERVATION. To study… | ||
| Scan227 | Analysis of 'frame jellying' and 'high speed wobble' through stationary and road tests. | ||
| View original record | -2- and frequency of the mascot movement. NATURE OF FRAME JELLYING. By means of the apparatus above described, we obtained the following information :- (1) Frame jellying is an embryo high speed… | ||
| Scan228 | Analysis of chassis frame twisting, radiator movement during 'jellying', and the effect of the frame on wobbles. | ||
| View original record | -3- from side to side, or .187" in either direction from the central position. The greatest amplitude of movement that we have produced by our artificially excited test is .650". Therefore the angle… | ||
| Scan229 | The effect of shock damper loading and experiments to alter frame periodicity to reduce chassis 'jellying'. | ||
| View original record | -4- to the axle. Thus a bare chassis is practically immune from "jellying". When a body is fitted the periodicity of the frame is altered, in almost every case to the detriment of the steering and… | ||
| Scan230 | Experiments with body attachments, sub-frame mounting, and damping characteristics. | ||
| View original record | -5- (c) As a further parallel experiment we tried with and without spare wheels in the side position. Carrying the spare wheels at the side made a definite improvement. Altering the Body Attachment.… | ||
| Scan231 | Experiments to improve steering and reduce wobble by altering the front axle assembly. | ||
| View original record | -6- to that of a close coupled saloon like 1-WJ. It will be appreciated that this question is somewhat complicated and involved and we are still working on it. Altering the Front Axle Assembly. We… | ||
| Scan232 | Summary of efforts to cure a chassis 'jellying' problem by exploring different methods of damping. | ||
| View original record | -7- SUMMARISING THE POSITION. We think we have explained the difference between different cars. While bodies vary, the most noticeable difference on cars in service will be as to whether the wheels… | ||
| Scan233 | Note on fitting spare wheels and adding damping between the scuttle and dash. | ||
| View original record | -6- fitting: the spare wheels at the side and using extra damping between the scuttle and the dash. HS/Rm. | ||
| Scan234 | Blueprint of a test rig and recording apparatus for measuring radiator movement. | ||
| View original record | HS 267, TEST RIG, RECORDING APPARATUS, 1/10 SECS, RAD MOVEMENT | ||
| Scan235 | Heavily faded document with a purple 'PRINT ROOM' stamp in the top left corner. | ||
| View original record | [Stamped in purple ink, upside down] D ROLLS-ROYCE. LIMITED PRINT ROOM. 20 FEB 1930 [The main body of text on the page is too faded to be legible.] | ||
| Scan236 | Design for an improved bonnet and dashboard for the Phantom II, referencing Sir Henry Segrave's car. | ||
| View original record | X7250 BY. From EV. c. to Hs. c. to Sg. EV.10/JL. 27.2.30. X.7260 X.7500 X.7250 X.7830 X.7770 Re: Improved Bonnet and Dashboard - Phantom 11. After seeing the bonnets, radiator and dash as shewn on… | ||
| Scan237 | Tenth report of the design committee discussing frame jellying, rear axle failure, and battery recharging capacity. | ||
| View original record | R. (Held up). Sg. Wor. Hy. E. Hs. Rg.1/LW.5.3.30. X.457 X.7380 X.7250 X.7535 X7250 TENTH REPORT OF DESIGN COMMITTEE. Frame Jellying. This problem was discussed again at some length, both as regards a… | ||
| Scan238 | Testing and investigation into a frame and radiator 'jellying' vibration issue. | ||
| View original record | x7350 To R. From Hs/Ru. (Held up). c. to SS. Wor. c. to RS. E. c. to EV. Da. c. to Cy. EP. c. to Hn. Mx. c. to PN. Hs/Ru.S/MJ.12.3.30. x657 x7250 x7380 FRAME AND RADIATOR JELLYING. We have now… | ||
| Scan239 | Explanation of measurements from various test curves related to engine mounting and frame vibration. | ||
| View original record | EXPLAINING THE MEASUREMENTS SHOWN ON THE ATTACHED PRINT. CURVES A & B Demonstrate that the rubber mounting allows the engine to float so that its amplitude of movement is not so great as that of the… | ||
| Scan240 | Bumper tests measuring the relative amplitude of movement of the radiator and engine. | ||
| View original record | I.W.J. BUMPER TESTS OF RADIATOR MOVEMENT RELATIVE AMPLITUDE OF MOVEMENT OF RADIATOR AND ENGINE. A. CAR STANDARD CONDITION, TYRES 30 LBS/D'' RADIATOR MOVEMENT. 10 WOBBLES IN 1.1 SECS. FREQUENCY 9/SEC.… | ||
| Scan241 | Proposed modified bonnet, radiator, and dash for two car models. | ||
| View original record | X7250 To HS. from EV. Evl/14.3.30. X7260 X7250 X7500 X7830 P.2. RE : PROPOSED MODIFIED BONNET RADIATOR & DASH. We thank you for your Cx/Hnl8/EDL/13.3.30 re the above. You will recollect that at the… | ||
| Scan242 | Depot sheet concerning the corrosion of aluminium cylinder head tubes and the recommendation for their replacement. | ||
| View original record | To Hm. From Hs/Rn. For Depot Sheet. V7250 Hs/Rn.5/MJ. 21.3.30. CORROSION OF CYLINDER HEAD TUBES. X7250 X7050 Several cases of water in the crankcase have been traced to corrosion of the aluminium… | ||
| Scan243 | Fifteenth design committee report discussing the Phantom oil filter and radiator mounting, and a compression ignition unit. | ||
| View original record | COPY. R. (Held up). Sg. Wor. By. E. Hs. Rg.3/LW.21.3.30. X.2924 X.4037 X.7250 X.457 X.4433 FIFTEENTH REPORT OF DESIGN COMMITTEE. Oil Filter on Phantom. The scheme for an Auto Klean filter in the main… | ||
| Scan244 | Cost implications and manufacturing challenges of Phantom II square tube radiators. | ||
| View original record | X7250. To BY. from ROY. c. to WOP. c. to Hs. ROY3/MG24.3.30 Phantom II Radiators - Square Tubes (E.30239) I notice the Experimental Shop are requisitioning further supplies of PHANTOM II Square Tube… | ||
| Scan245 | Single point radiator suspension for the 10,000 mile car and its future application. | ||
| View original record | X7260 By. from Da. c. Hs. c. RHC. Da4/G24.3.30. RADIATOR SUSPENSION. Herewith N. Sch. 3059 shewing the single point radiator suspension intended for the 10,000 mile car. A new bottom tank is called… | ||
| Scan246 | Test report on 'radiator jellying', comparing steering and ride harshness with different front spring stiffness on EX chassis models. | ||
| View original record | X7250. Hs/Bn.3/MJ.27.3.30 X7250 X7520 D410 X457 RADIATOR JELLYING. Tests were carried out fitting 25% stiffer front springs to 22-EX and front springs having 4.45" initial deflection to 20-EX. With… | ||
| Scan247 | Body distortion caused by radiator 'jellying' and the effect of torque reaction dampers. | ||
| View original record | -2- body and the doors etc., distorted tremendously when the radiator was 'jellying'. We found that the torque reaction dampers had a slight affect on radiator 'jellying'. HS/Rn. | ||
| Scan248 | Proposed adaptations to a single point radiator suspension for an experiment. | ||
| View original record | X7250 To Ry. from Da. c. Hs. Da5/N27.3.30. RE : RADIATOR SUSPENSION. X.7250. Here is N. scheme 3061, shewing the adaption of the single point radiator suspension to the 3" dia. cross member at the… | ||
| Scan249 | Modified radiator mounting scheme to fix a 'jellying' issue. | ||
| View original record | y7250 SE. From Hs. c. to C. Wor. Hs.1/MJ.1.4.30. x457 y7250 RADIATOR JELLYING. We expect to have this week, a modified scheme of radiator mounting which will overcome complaints of radiator… | ||
| Scan250 | 'radiator jellying' issue and the plan to send car 1-WJ for a fix. | ||
| View original record | COPY. Y7250 S/W. Hs. C.10/C.2.4.30. X.457 X.7250 RADIATOR 'JELLYING'. We shall want to use 1-WJ up to the end of this week; we shall then have another car in that we can use, I hope, so that we can… | ||
| Scan251 | Analysis of the Smith's Calorstat for operating Phantom II radiator shutters, including effort calculations and comparison with a Sylphon thermostat. | ||
| View original record | To E. From Hs/AJL. c. to By. c. to Rs. x7250 Hs/AJL.1/WJ.3.4.30. SMITH'S CALORSTAT FOR P.11. RADIATOR SHUTTERS. x3499 x7250 We give herewith curves showing the effort available from the Smith's… | ||
| Scan252 | The force required to operate shutters, comparing two instruments and noting insufficient effort without a return spring. | ||
| View original record | -2- 100°C. was 52 lbs. on one instrument, and in the neighbour-hood of 35 lbs. on a second instrument (the one fitted to 23-EX car). There is scarcely sufficient effort available to open the shutters… | ||
| Scan253 | Graph showing the effort available from a Smith's Calorstat for PII radiator shutters against temperature. | ||
| View original record | SMITH'S CALORSTAT FOR P II RADIATOR SHUTTERS EFFORT AVAILABLE TO OPERATE SHUTTERS WITH TEMPERATURE RISE:- 1. SHUTTERS FULLY CLOSED 2. SHUTTERS FULLY OPEN (.350" CALORSTAT MOVEMENT) 3. MAXIMUM MOVEMENT… | ||
| Scan254 | Page stamped by the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE LIMITED PRINT ROOM, 3 APR 1930 DERBY. | ||
| Scan255 | Testing wider 'Dermatine' washers for Phantom II radiator caps, recommending the modification for production. | ||
| View original record | BY. From Hs/AJL. C. to EP/Thn. 87250 Hs/AJL.1/MJ. 3.4.30. RE. RADIATOR CAPS - PHANTOM 11. We have tested out the wider washers in 'Dermatine' as instructed, at our request, in BY/CS5/IG.26.2.30., and… | ||
| Scan256 | Unsatisfactory rubber rings in Phantom II radiator caps and the testing of new 'Dermatine' rings. | ||
| View original record | AJL x7250. EP/Thn6/H4.4.30. re. RADIATOR CAPS - PHANTOM II. With reference to the rubber rings fitted in the Radiator caps on early Phantom II. chassis - you agreed with us that these were… | ||
| Scan257 | The cancellation and alteration of Phantom II Radiator filler caps. | ||
| View original record | To RMC [Strikethrough] c. HS/ACL. BY/CS4/IG.11.4.30. X7250. Phantom 11 - Radiator - Sec:5250. ---------------- Further to our memo: BY/CS5/IG.26.2.30, please note that E.80437/8/9/40 Filler Caps are… | ||
| Scan258 | Standardisation of nickel coated copper cylinder head tubes. | ||
| View original record | RR 755 REVISED (ION) (OF 687 4-1-29) SM. 2/5943. Y7250. COMPLETED 15.4.30. STANDARDISATION of CHASSIS PARTS. Date 24.3.30. X No. 7050 Drawing No. Part List Description of Parts: NICKEL COATED COPPER… | ||
| Scan259 | Failure to cure 'Radiator Jellying' on car 1-WJ and requesting to keep the vehicle for further testing. | ||
| View original record | Sg. From Hs/Rm. c. to Wor. c. to C. Hs/Rm.3/MJ.23.4.30. x7250. x457. x7960 RADIATOR JELLYING. We failed to cure radiator 'Jellying' on 1-WJ with the single point mounting mentioned in Hs.1/MJ.1.4.30.… | ||
| Scan260 | 10,000-mile test of a special gauze radiator filter designed to address radiator troubles. | ||
| View original record | X7250. To R. From Hs/Ru. (Held up). c. to Sg. c. to Wor. Hs/Ru.2/H.28.4.30. X7940 X7250 23-EX. With reference to the attached Daily Report of the 10,000 Miles Test 25.4.30. The radiator on this car… | ||
| Scan261 | Request to obtain two types of springs for radiator mounting with detailed specifications. | ||
| View original record | REC. From Hs/Rn. y7-250. Hs/Rn.S/MJ.23.4.30. Will you please obtain the following springs which are urgently required for radiator mounting. (A) Outside dia. .660" Inside dia. .428" Six working coils… | ||
| Scan262 | Sample of foreign matter taken from the filter of engine 23-EX, questioning if it's related to new galvanised cylinders. | ||
| View original record | Hl. From Hs/Rn. Y7250 Hs/Rn.1/MJ.30.4.30. Y7940. We send you herewith a sample of foreign matter taken from the filter of 23-EX, now running in France. The filter was installed over the radiator to… | ||
| Scan263 | Typed letter to G.W. Hancock in France regarding a car's overheating problem and a potential axle leak. | ||
| View original record | G.W.Hancock,Esq., Hotel de France, Chateauroux, Indre, FRANCE. To GWH. From Hs/Rm. X7250 X7940 Hs/Rm.4/MJ.30.4.30. We thank you for your reports. We note what you say about the radiator and the fact… | ||
| Scan264 | Continued discussion on resolving an axle oil leak with a vented plug on car 24-EX. | ||
| View original record | -2- Hs/Rn.4/MJ.30.4.30.Contd. interested in is the rate at which an axle can lose oil through a leak of this nature. Having discovered this, we should like to know if the vented axle plug will cure… | ||
| Scan265 | The design and operation of thermostat-controlled radiator shutters. | ||
| View original record | E. Hs } FROM R. OV. } (At Le Canadel) C. Sg. Wor. C. Rk. By. Da. X7250. R2/M30.4.30. X.7772 X.3499 X.7250. CAR WORK ENGLISH & AMERICAN RADIATOR SHUTTERS. During the past 10 yrs. we have had thermostat… | ||
| Scan266 | Modifications to the Phantom II radiator suspension system, including the mounting and springs. | ||
| View original record | X7250. BY. from Da. C. to Sg. Hs. Da2/M30.4.30. X7250 PHANTOM 2. RADIATOR SUSPENSION ETC. Herewith we send N. sch. 3062 shewing the single point radiator mounting in conjunction with the 3" cross… | ||
| Scan267 | Testing parameters and operating temperatures for car shutter thermostats. | ||
| View original record | X7250 E. Hs. } FROM R. Dy. } (At Le Canadel) R1/M1.5.30. C. to Sg. Wor. C. to RE. By. Da. X7250 X3499 CAR WORK. THERMOSTATS FOR SHUTTERS. (IN CONTINUATION OF R2/M30.4.30) The unit bellows should each… | ||
| Scan268 | The cooling performance of the 23-EX radiator, with comparisons to other models and plans for further testing. | ||
| View original record | x7250 To Sg. From Hs/Rn. C. to Wor. RE. 23-EX RADIATOR. With reference to Sg.4/E.1.5.30. Though the S.S. cars have not been run 10,000 mile tests in the hottest part of the summer, FN. had 21-EX at… | ||
| Scan269 | Continued page discussing car cooling performance based on recorded air and water temperatures. | ||
| View original record | -2- Hs/Rm.2/M.5.5.30.Contd. the air temperature is given as 25°C and the water as 80°C. We are not sure whether this test was made with the filter removed, but if the figures are correct the car… | ||
| Scan270 | Solutions for radiator vibration ('jellying'), dampers, frame torsion, and universal rubber body mounting. | ||
| View original record | X-7250 Hs/Rn. Da. ) FROM R. E. Ev. ) (At Le Canadel) C. to Sg. Wor. PN. C. to C. LHS. EP. RL/M5.5.30. X.7380 X.457 X.5380 X.7250 X.7830 X.5250 X.5830 X.7005 X.5005. CAR WORK - RADIATOR JELLYING. BODY… | ||
| Scan271 | List of methods for insulating the power unit, body, and passengers from the vehicle frame. | ||
| View original record | R1/5.5.30. contd. -2- We have then :- (1) The power unit and gearbox insulated from the frame (rubber). (2) The body insulated from the frame (rubber (3) The passengers insulated from the body (good… | ||
| Scan272 | Scheme for a centre point radiator mounting, with a request to produce four sets for testing. | ||
| View original record | X7250. RHC. From Hs/Rn. Hs/Rn.2/MJ.6.5.30. CENTRE POINT RADIATOR MOUNTING. W.W. have given us a scheme for this, for the tubular cross-member. Herewith sketches adapting the spring they have given us… | ||
| Scan273 | Use of a double spring versus a single spring for single-point radiator suspension. | ||
| View original record | x7250. EV. from Da. c. Sg. Hs. Dal/M7.5.30. SINGLE POINT RADIATOR SUSPENSION. X.7250 X.5250. We send herewith N.sch.3083, in which it is suggested that we should use a double spring in the suspension… | ||
| Scan274 | Specifications and load calculations for centre point radiator mounting springs. | ||
| View original record | X7250 For Files. Hs/Rm.6.5.30. X. 7250 X. 7960c X. 7518. CENTRE POINT RADIATOR MOUNTING; Springs actually fitted to 1-WJ and 80-WJ. No. of coils (Total) 7.5 Wire. 12 S.W.G. Mean rad. .292 Free length… | ||
| Scan275 | Provisional patent for a radiator mounting design on the 40/50 HP model. | ||
| View original record | Rr c. Sg. c. HOT. c. Hs. ---------- x 7250 BY10/C.19.5.30. P II RADIATOR MOUNTING - 40/50 HP. ---------- Referring to your suggestion that we should cover Hs's idea of supporting the radiator on the… | ||
| Scan276 | Modification of a double-acting thermostat for radiator shutters, including specific design notes and requests. | ||
| View original record | X7250 By. from E. c. Sg. c. Wor. Hs. E3/M24.5.30. X.7772 X.7250 X.3499 L.H. P.2. DOUBLE ACTING THERMOSTAT - RADIATOR SHUTTERS. We send herewith Lec.2799, shewing the operation of the thermostat… | ||
| Scan277 | Modifications to the Phantom II L.H. Chassis, including filters, shutters, ignition, and radiator support. | ||
| View original record | X7250. Hs. E. ) FROM R. Da. Ey. ) C. Sg. Wor. Oy. R2/M26.5.30. PHANTOM II L.H. CHASSIS, & IMPROVED R.H. X.7772 X.7770 X.7250. WW. have finished the following :- (1) Improvements to oil filter because… | ||
| Scan278 | Radiator support schemes for the L.H. Phantom and N. 2 series chassis. | ||
| View original record | x7250. E. Dept. [Struck through] T. Dept. [Struck through] D. Dept. [Struck through] c. Hs. [Struck through] BY8/G.12.6.30. RADIATOR SUPPORT - L.H. PHANTOM AND N. 2 SERIES CHASSIS. In discussing this… | ||
| Scan279 | Reverting the activation temperature of the radiator thermometer's red warning light back to 97°C. | ||
| View original record | BY. From Hs/Rn. c. to Wor. c. to MX. c. to O.O. Hs/Rn. 2/MJ.16.6.30. X 7250 X5250 X2875 3987 RADIATOR THERMOMETERS. Some little time ago we made a request that the red light should come in at 92°C… | ||
| Scan280 | The Brooklands tests of the Phantom II cooling system in June 1930. | ||
| View original record | X7250 To R. from HS/an. c. SG. Wor. c. DE. L. c. By. Rg. c. Lr. HS/Bml/MJ25.6.30. X.788 X.766 X.7250 X.7260 X.7731 X.7772. BROOKLANDS TESTS JUNE 17th to 20th 1930. We took 19-EX car to Brooklands with… | ||
| Scan281 | Analysis of engine cooling improvements through various bonnet and undershield ventilation configurations. | ||
| View original record | Hs/Rml/MJ25.6.30. contd. -2- it. Therefore, in order to establish a basis of comparison for all conditions, the car was driven at a constant speed of 62 M.P.H. round the track until the heat… | ||
| Scan282 | Vehicle cooling systems, including bonnets, radiators, and oil temperature, for operation in hot climates. | ||
| View original record | -3- We think that it is essential to fit ventilated bonnets to cars going to hot climates because the critical atmospheric temperatures at which the car will boil is certainly at least 10°C. lower… | ||
| Scan283 | Car performance testing, detailing issues with oil temperature, ignition, fuel supply, and lap speeds. | ||
| View original record | Hs/Rml/W25.6.30 contd. -4- reaches is rather excessive (Graph (4). We have recorded temperatures as high as 110°C. after a prolonged burst of speed on the track with atmospheric temperatures of only… | ||
| Scan284 | Performance tests and issues with experimental car models, specifically focusing on slow speed and overheating. | ||
| View original record | -5- might be worth certification by the track authorities for sales propaganda. We traced the inferior performance of 18-EX to a tighter engine by allowing the cars to come to a standstill from 60… | ||
| Scan285 | Report page detailing tests on fan belt tension, water circulation, and the American Phantom II. | ||
| View original record | Hs/RML/H25.6.30 contd. -6- the tests, and ascertained that it was subjected to the correct tension. We compared the radiator temperature in this condition with the fan belt tightened choc a bloc and… | ||
| Scan286 | Summary of development issues and potential improvements for the Phantom II's cooling system, including bonnet ventilation, fan, and radiator. | ||
| View original record | -7- advance or fan, but we are confident that it will be up to standard on the present 10,000 miles test. SUMMARY. Bonnet Ventilation. Phantom II requires as much ventilation as we can give it, as the… | ||
| Scan287 | The necessity of ventilated and louvred bonnets for cars used at high speeds on the Continent and English roads. | ||
| View original record | Hs/Rml/MJ25.6.30 contd. -8- special motor roads, all encourage high speeds. We know of no big car used on the Continent that does not fit ventilated bonnets. Therefore, while we are better off for… | ||
| Scan288 | Graph plotting top water, bottom water, and oil temperatures against miles run under specific test conditions. | ||
| View original record | GRAPH I TEMP C° TOP WATER OIL BOTTOM WATER 19 E.X. 14 x 52 AXLE. 62 M.P.H 6"m/m. 7 1/2"m/m RAD. NO BONNET VENTILATION. Ats TEMP. 24°C. MILES RUN | ||
| Scan289 | Blank document with a Print Room stamp from Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 2 JUL 1938 DERBY | ||
| Scan290 | Graph comparing ambient temperatures that cause overheating in a Standard PII Cabriolet with various ventilation configurations. | ||
| View original record | GRAPH II STANDARD PII CABRIOLET 19 E.X. AXLE RATIO 14x52 WT. 48 CWT. EMPTY. TEMP. AT WHICH CAR WILL OVER-HEAT EVENTUALLY. (100°C - TOP WATER TEMP) 10°C 20°C 30°C 40°C 50°C STANDARD NO VENTILATION 35°C… | ||
| Scan291 | Graph plotting top and bottom engine water temperatures against various bonnet, shutter, and fan configurations. | ||
| View original record | GRAPH III. STANDARD REAR BONNET SHUTTERS OPEN FRONT UNDERSHIELD OFF FRONT BONNET SHUTTERS OPEN ALL SHUTTERS OPEN LOUVRED BONNET LOUVRED BONNET FRONT FAN OFF TOP WATER TEMP BOTTOM WATER TEMP SPEED 62… | ||
| Scan292 | Graph IV showing Oil and Top Water temperatures versus miles run under varying car conditions. | ||
| View original record | GRAPH IV TEMP C° MILES RUN 62 M P H C.O. CLOSED CAR OPENED FULL OUT C.O. OPEN. 83 M.P.H. ATS TEMP 20°C OIL TEMP TOP WATER VENTILATED UNDERSHIELD ALL BONNET SHUTTERS OPEN | ||
| Scan293 | Bar chart comparing critical atmospheric temperatures for a spring tensioned fan versus a positively tensioned fan belt at 62 M.P.H. | ||
| View original record | GRAPH V 19 E.X. 62 M.P.H. NO BONNET VENTILATION COMPARISON OF SPRING TENSIONED FAN AND FAN BELT TENSIONED POSITIVELY. CRITICAL ATS TEMP 40°C 30°C 20°C 10°C SPRING TENSIONED 40.5 BELT TIGHTENED. CHOC à… | ||
| Scan294 | Graph comparing top water temperature over distance for two experimental setups, 18 E.X. and 19 E.X. | ||
| View original record | GRAPH VI. TOP WATER TEMP °C MILES RUN 100 90 80 70 60 2.5 5 7.5 10 12.5 15 17.5 20 22.5 18 E.X. 19 E.X. OPENED UP TO FULL THROTTLE. COMPARISON OF 19 E.X. AND 18 E.X. 6 7/m 7 1/2 /m RAD. 62 M.P.H. TOP… | ||
| Scan295 | Blueprint showing a modification to the front undershield to improve the cooling system. | ||
| View original record | MODIFICATION TO IMPROVE COOLING SYSTEM. CUT AWAY FRONT UNDERSHIELD STANDARD FRONT UNDERSHIELD | ||
| Scan296 | Mostly blank document page with a purple ink stamp from the print room. | ||
| View original record | ROLLS-ROYCE LIMITED PRINT ROOM. 2 JUL 1930 DERBY. | ||
| Scan297 | Request to fit a radiator matrix from a 24-EX model into a different radiator for testing on a 19-EX model. | ||
| View original record | X7250. RHC. From Hs/Rm. Hs/Rm.2/MJ.26.6.30. Will you please fit the matrix (6 m.m. 7 1/2 m.m.) out of the original radiator for 24-EX (now in the stores), to the top and bottom tank of the radiator… | ||
| Scan298 | Recommendations to resolve an overheating issue on car 117-WJ by adjusting the Phantom II fan belt and removing the front undershield. | ||
| View original record | Repair Dept. From Hs/Rm. x7250. Hs/Rm.2/WJ.27.6.30. x4117 x7220 x7250. With further reference to the over-heating trouble reported on 117-WJ. We make the following recommendations in this case - (1)… | ||
| Scan299 | Summary of circulation test results for the Phantom II engine, detailing findings from six different data curves. | ||
| View original record | FOR FILES. X7250 Rm.1.7.30. x766 7250 CIRCULATION FIGURES PHANTOM 11. CURVE 1. - shews the various errors which are likely to occur if the venturi is incorrectly fitted up. CURVE 11.- shews that at… | ||
| Scan300 | Two graphs comparing engine coolant flow rates against RPM for different venturi and radiator outlet configurations. | ||
| View original record | Graph 1: RAD E 73351 6/4/4 L.H. ENGINE USED A VENTURI IN TOP DELIVERY PIPE B. SUCTION SIDE C AND WRONG WAY ROUND SHEWING ERRORS IN MEASURING UNLESS VENTURI CORRECTLY FITTED Graph 2: RAD E 73448 6/7/41… | ||
| Scan301 | Stamped document from the Print Room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 1 JUL 1930 DERBY. | ||
| Scan302 | Two graphs comparing left-hand and right-hand engine delivery, and venturi versus actual quantity measurements. | ||
| View original record | Top Graph: Title: COMPARISON OF L.H. AND R.H. ENGINES DELIVERY Y-Axis: DELIVERY GAL/MIN X-Axis: ENGINE R.P.M. Data Lines: R.H. ENGINE, L.H. ENGINE Bottom Graph: Title: COMPARISON OF VENTURI AND ACTUAL… | ||
| Scan303 | Water circulation test graphs for PII, comparing pump delivery against water temperature for different radiator configurations. | ||
| View original record | WATER CIRCULATION TESTS PII Graph 1: - Y-Axis: PUMP DELIVERY GAL/MIN - X-Axis: BOTTOM WATER TEMP °C - Line 1: RAD E.79321, BOTH SUCTION OUTLETS IN USE - Line 2: 1st L.H. CHASSIS, RAD WITH THERMOSTAT… | ||
| Scan304 | Heavily faded document with an illegible main body and a purple ink stamp from the Test Room. | ||
| View original record | [Main body text is illegible] [Stamp in bottom left corner] ROLLS-ROYCE, LIMITED TEST ROOM, 1 JUL 1930 DERBY. | ||
| Scan305 | Modifications for increased cooling on 25 HP & 45 HP models, comparing shutters, louvres, and radiator designs. | ||
| View original record | X7250 Hs. from R. c. Sg. Wor. c. By. C. R1/M4.7.30. X.766 X.1085 X.7250 X.5250 25 HP. & 45 HP. MODIFICATIONS FOR INCREASED COOLING I do not like the idea of cutting away the front apron because of the… | ||
| Scan306 | Modifications to the thermostatically operated shutters for the 25 HP model, specifically regarding the thermostat levers. | ||
| View original record | X7250. BM. from E. C. Sg. Hs. E1/M5.7.30. z X.3499 X.5250 X.7250 THERMOSTATICALLY OPERATED SHUTTERS ON 25 HP. In response to your memo. concerning the above, we send herewith Lec. 2807 shewing… | ||
| Scan307 | Note on the simplification of the automatic radiator control for parts interchangeability between 25HP and 45HP models. | ||
| View original record | X/7250 Extract from - SG. RG. } FROM R. HS. BY. } R1/M8.7.30. X.7250. X.5250. WORK AT W.H. AUTOMATIC RADIATOR CONTROL. This has been simplified and arranged to be made with all parts interchangeable… | ||
| Scan308 | Second report on Brooklands radiator tests, detailing issues with the autovac fuel supply system. | ||
| View original record | X.7250 To R. from Hs/Rm. c. Sg. Wor. c. Da. E. c. Ev. Rg. c. Lr. Hs/Rml/MJ9.7.30. X.788 X.766 X.7250 X.7260 X.7220 X.7771 X.7510 X.7772 BROOKLANDS RADIATOR TESTS. SECOND REPORT. We carried out a… | ||
| Scan309 | Investigation into high-temperature effects on air intake, vacuum pump efficiency, and fuel supply. | ||
| View original record | Hs/Rml/MJ9.7.30 contd. -2- temperature of the air intake to the carburetter. With an atmospheric temperature of 24°C, the air intake reached 50°C. at 75 M.P.H. As soon as the car was stopped this… | ||
| Scan310 | The cooling system fan belt and mixture strength performance. | ||
| View original record | -3- by such leaks in service has been brought to our notice. COOLING SYSTEM - FAN - We confirmed our previous result that the standard spring loaded whittle belt is incapable of driving the fan… | ||
| Scan311 | Resolving pre-ignition and over-heating issues, with comparisons of radiator matrices and bottom outlets. | ||
| View original record | HS/Rml/MJ9.7.30 contd. -4- pre-ignition and over-heating. The simplest way of overcoming this is to run on the reserve. This trebles the period of full throttle work before shortage takes place. The… | ||
| Scan312 | Vehicle cooling system circulation and water temperature tests at various speeds. | ||
| View original record | -5- CIRCULATION. We conducted tests on the track restricting the circulation until the system lost efficiency to the extent of about 2°C. top water temperature. The flow under these conditions is… | ||
| Scan313 | Car overheating issues, discussing the effects of wind, fan performance, and temperature readings. | ||
| View original record | Hs/Rml/MJ9.7.30 contd. -6- efficient fan, a rich mixture and a ventilated bonnet the car should not over-heat at air temperatures below 35°C. when driven all out continuously in still air, and if… | ||
| Scan314 | Recommendations for improvements to the fan belt, autovac, bonnet shutters, radiator, and fuel system. | ||
| View original record | HS/Rml/MJ9.7.30 contd. -7- Our recommendations for improvement are - (1) Improved fan belt. Standardisation sheet circulated. We are so dependent on this that we think the drive might receive design… | ||
| Scan315 | Two graphs analysing the effects of fan type, vehicle speed and radiator ventilation on cooling system water temperatures. | ||
| View original record | GRAPH I A. TEMPERATURE C° TOP WATER TEMP. BOTTOM WATER TEMP. ATS TEMP. 20°C STANDARD 6M/M 7 1/2M/M RAD ALL SHUTTERS CLOSED 62.5 M.P.H. 19 EX CAR WT 48 CWT 11 x 41 AXLE. BROOKLANDS TEST 2ND JULY 1930… | ||
| Scan316 | Blank document page with a purple date stamp in the bottom right corner. | ||
| View original record | LIMITED 1 12 JUL 1930 | ||
| Scan317 | Study containing graphs and diagrams on the effect of water circulation on engine overheating. | ||
| View original record | GRAPH II EFFECT OF CIRCULATION ON OVERHEATING Graph A: 19 EX CAR A BACK PRESS CAUSED BY RESTRICTION 15 LBS/SQ' WATER OUTLET FROM THE CYL: BLOCK RESTRICTED TO 23-.125 HOLES. TOP WATER TEMP. ATS TEMP… | ||
| Scan318 | Graph plotting top and bottom water temperatures against seven different engine cooling configurations during a test at Brooklands. | ||
| View original record | GRAPH III TEMPERATURE °C TOP WATER TEMP BOTTOM WATER TEMP ① FULL WEAK NO FAN. ② AS ① BUT MIXTURE NORMAL NO FAN. ③ AS ② BUT FAN SPRING LOADED ④ AS ③ BUT FAN BELT CHOC À BLOC. ⑤ AS ④ BUT FAN 1" NEARER… | ||
| Scan319 | Graph showing the effect of water temperature on the complete car circulation system at a constant engine speed. | ||
| View original record | GRAPH IV EFFECT OF TEMP. ON COMPLETE CAR CIRCULATION RADIATOR E. 79951 CIRCULATION GAL/Min. DEPRESSION ON SUCTION SIDE OF THE PUMP INS HG 2500 ENGINE R.P.M BOTTOM WATER TEMP C° FLOW GAL/MIN DEPRESSION… | ||
| Scan320 | Blank document page with a purple ink date stamp from Derby. | ||
| View original record | 12 JUL 1930 DERBY. | ||
| Scan321 | Cooling tests on 25 HP and 40/50 HP engines, focusing on radiator tube design and airflow. | ||
| View original record | X7250 To R. from Hs/Rm. c. Sg. c. WOF. c. Ev. C. Hs/Rml/ADLO.7.30. X.788 X.766 X.7250 X.5250 X.7260. COOLING TESTS 25 H.P. and 40/50 HP. With reference to R2/M1.7.30. R1/M4.7.30. You will see from our… | ||
| Scan322 | On-track testing of a square tube radiator against other cars. | ||
| View original record | Hs/Rml/AMO.7.30 contd. The square tube radiator will be run on our next test. We think comparison with other cars would be invaluable, but to be of any use they will have to be carried out on the… | ||
| Scan323 | Water loss from a radiator due to top tank size reduction and potential solutions. | ||
| View original record | G.W.Hancock, Esq., Hotel de France, Chateauroux, Indre, FRANCE. X7250. To GWH. From Hs/Bn. 24-EX Hs/Bn.1/WJ.14.7.30. Dictated 12.7.30. We thank you for your reports. Re. Water Loss. We think most of… | ||
| Scan324 | Trial of parts to reduce radiator 'jellying' and the replacement of worn pump components. | ||
| View original record | -2- should like you to try this with a view to seeing if it has any beneficial effect upon the radiator or 'jellying'. The other pieces are to improve your radiator mounting. You will recollect before… | ||
| Scan325 | Radiator tube size, petrol mixture, and engine cooling for car work. | ||
| View original record | Hs. from R. c. Sg. c. Wor. By. X.7250 R1/M14.7.30. X.7250 X.766 X.7280 RE - CAR WORK. It appears from your mem. Hs/Bml/MJ9.7.30. that you have tested smaller radiator tubes than the 6 mm. standard. I… | ||
| Scan326 | Recurring water loss issues on the 24-EX model during a 10,000-mile test in France. | ||
| View original record | COPY. x 7250. S/W. X. 7250. X. 766. X. 7941d. to Hs. From Sg. Sg.2/D17.7.30. c. to Wor. Re. 10,000 Miles Test of 24-EX, in France. ------------------------------------------ It has been made clear in… | ||
| Scan327 | Production timelines for the N.2 series chassis and a 'jellying' issue with the single point suspension radiator. | ||
| View original record | Sg c. Hs. X7250 BY1/G.18.7.30. SINGLE POINT SUSPENSION - RADIATOR. Referring to Sg4/D.17.7.30. the first chassis in N.2 series is specified by the Works to be delivered to test October 11th. This… | ||
| Scan328 | Investigation into the cause of water loss from the new radiator on the 25-EX model. | ||
| View original record | G.W.Hancock, Hotel De France, Chateauroux, Indre, FRANCE. X 7250. X7941d. to GWH. From Hs/Rm. Hs/Rm.3/MJ.22.7.30. LOSS OF WATER FROM 25-EX. We have been conducting some tests here to find out why… | ||
| Scan329 | Diagnosing and resolving radiator water loss due to splashing and pitching. | ||
| View original record | -2- Hs/Rm.3/WJ.22.7.30.Contd. We find that if the car is run on the smooth road where no "Pitching" takes place, very little water is lost by splashing but as soon as the car starts to "pitch" plenty… | ||
| Scan330 | Continuation page of a letter advising that a radiator baffle cannot be fitted without dismantling the top tank. | ||
| View original record | -3- Hs/Rn.3/W.22.7.30.Contd. baffle against splashing. We presume it will not be possible for you to fix up such an arrangement on your car because it means dismantling the radiator top tank. Hs/Rn. | ||
| Scan331 | Radiator water loss on car 24-EX, comparing it to a similar issue on car 23-EX. | ||
| View original record | Sg. From Hs. c. to Wor. J7250. Hs.4/MJ. 22. 7. 30. x7250 x7941d. LOSS OF WATER ON 24-EX. Replying to Sg.2/D17.7.30. The radiator fitted to 24-EX. is the new designed type with the shallow top tank.… | ||
| Scan332 | Depot sheet outlining procedures for diagnosing and fixing issues related to the overheating of cooling water. | ||
| View original record | Hd. From Hs/Bn. For Depot Sheet. & Hn. OVERHEATING OF COOLING WATER. Every year, in hot weather, a number of complaints arise that the water in the cooling system of P.R. cars can be made to boil… | ||
| Scan333 | Troubleshooting and maintenance procedures for the engine cooling system, focusing on fan belts and water pump issues. | ||
| View original record | -2- Hs/Au.1/U.1.3.30.Contd. fitted with 6 m/m. 7 m/m. tubes should always be suspected as potential sources of trouble. The matrix should be cleaned externally from Bees, Butterflies, etc. (D) Inspect… | ||
| Scan334 | Guide on diagnosing and rectifying engine overheating issues, covering bonnet ventilation, mixture strength, and the use of a cut-out. | ||
| View original record | -3- Hs/Rm.1/AL.1.8.30.Contd. (2) BONNET VENTILATION. - The two (or in some cases, four) bonnet shutters provided, drop the top water temperature some 3°C. when open at speed. They also keep the… | ||
| Scan335 | Guidance on vehicle overheating, the function of the red warning light, and radiator shutter operation. | ||
| View original record | -4- Hs/Rm.1/H.1.S.3. Contd. with a louvred bonnet should be free from over-heating up to an atmospheric temperature of 30° C. and if trouble occurs at a temperature below this the car is not up to… | ||
| Scan336 | Blueprint detailing a modification to the left-hand Phase II radiator top tank, including a change to its capacity. | ||
| View original record | TOP TANK L.H. PH. II RADIATOR EXISTING INLET PROPOSED INLET PROPOSED INCREASE IN TOP TANK CAPACITY. BAFFLE TUBE HOLES TO DICTATE LEVEL TO WHICH TOP TANK CAN BE FILLED OLD TOP TANK CAPACITY. 429 CU.… | ||
| Scan337 | Alteration of Phantom II radiator thermometers to address over-heating problems. | ||
| View original record | BY. From Hs/Rn. c. to Wor. X7250. Hs/Rn.2/WJ.26.8.30. X3875. PHANTOM 11 RADIATOR THERMOMETERS. In view of the prominence of our over-heating troubles, we think that it is important that the… | ||
| Scan338 | Standardisation of a single point radiator mounting to prevent movement. | ||
| View original record | RR 755 REVISED (IGH) (DF 687 4-1-29) 5M. 2/5943. COMPLETED 26.8.30. X7250. STANDARDISATION of CHASSIS PARTS. Description of Parts. SINGLE POINT RADIATOR MOUNTING. Origin. To prevent radiator movement.… | ||
| Scan339 | Scheme for a discharge nozzle and spring-loaded valve to prevent water loss from a new radiator. | ||
| View original record | X7250 X7250 By. from E. c. Sg. Hs. El/M31.8.30. RE DISCHARGE NOZZLE FOR NEW RADIATOR. We have in hand a scheme for using a spring loaded valve in conjunction with the cap to shut in the top tank of… | ||
| Scan340 | Causes and potential solutions for radiator water loss on the Phantom II model. | ||
| View original record | X7250. Hs. } From R. Ey. } C. Sg. Wor. R1/M31.8.30. R.7770 X.7250 *.7260 PHANTOM II. LOSS OF RADIATOR WATER After asking Ev. to compare the capacities of the old and new radiator tanks we have come to… | ||
| Scan341 | Technical discussion on the design and effectiveness of square tube radiators and bonnet ventilation. | ||
| View original record | -2- SQUARE TUBE RADIATOR. Concerning this, I naturally had a funk that this would not be as effective as the round tube type. It has proved to be practically equal. We have not however, carried it out… | ||
| Scan342 | Poor design of bonnet locks and the high cost and unsatisfactory nature of vertical louvres. | ||
| View original record | R1/M31.8.30 contd. -3- and only requires our own design of bonnet lock to make it thoroughly satisfactory, the present bonnet lock being putridly bad, and defeating the very object of our new… | ||
| Scan343 | On radiator shutter friction, arguing against using a closing spring and suggesting design modifications to the lower bearing instead. | ||
| View original record | Hs. } FROM R. BY. } c. Sg. Wor. X7250. ADDITION TO Rl/M31.8.30. X.7770 X.7250 X.3499 P.2. RADIATOR Referring to Hs/Rm's report on radiator shutter friction, and the suggestion of a closing spring, I… | ||
| Scan344 | Explaining the design compromise of the Phantom II's cooling system in response to overheating complaints. | ||
| View original record | To Sg. from Hs/Rm. c. Wor. C. c. PN. H. EP. c. MX. Hd. BY. Handwritten: X 7250. Hs/Anl/AD2. 9.30. Handwritten: x766 x7250 x7260 x3875 OVERHEATING - PHANTOM II We suggest that the following information… | ||
| Scan345 | Instructions regarding the engine cooling system, radiator shutters, warning lamp, and bonnet ventilation. | ||
| View original record | -2- (1) The red lamp which is fitted to the instrument board is put there to prevent the driver forgetting to open his radiator shutters. When the red lamp lights it does not mean that the car cannot… | ||
| Scan346 | Guidance on interpreting the red engine warning lamp in various weather conditions. | ||
| View original record | Hs/Rd/AD2.9.30 contd. -3- (3) On Continental roads, benefit can be derived from running with the cut-out open. The main point to bear in mind is that the periodic lighting of the red lamp in… | ||
| Scan347 | Request to build a radiator matrix for the 25-EX car for improved efficiency. | ||
| View original record | RHC. From Hs/Rn. 87250 Hs/Rn.3/MJ.3.9.30. Will you please build up a radiator matrix suitable for 25-EX car out of 5 & 7 m.m. tubes at present in the shop. (Sample attached.) We want this matrix to be… | ||
| Scan348 | Standardisation of chassis parts relating to the thermometer warning light operating temperature. | ||
| View original record | RR 755 REVISED (10H) (OG 345 19-7-29) 5M. 6/643. COMPLETED 4.9.30. X7250 STANDARDISATION of CHASSIS PARTS. Date 1.8.30. Description of Parts. OPERATION AT 97.5 C. OF THE WARNING LIGHT ON THERMOMETER.… | ||
| Scan349 | Single point radiator mounting for the 24-EX model, intended as a fix for 'jelliers' complaints. | ||
| View original record | To Da. From Hs/Rn. X7250. Hs/Rn. 2/MJ.5.9.30. We fear that you may be unduly alarmed by the sketch of single point radiator mounting which we ran on 24-EX (Ms.299, attached). We should like to point… | ||
| Scan350 | Sketch of Radiator Side Fittings on a 24EX, a combination of schematics N.Sch.3062 and N.Sch.3059. | ||
| View original record | Hs 299 Hs 292. Ex 5039 Ex 5041 Ex 5042. Ex 5040 Hs 293. Sketch of Radiator Side Fittings on a 24EX. Combination of N Sch. 3062 + N Sch. 3059. 5 SEP 1923 | ||
| Scan351 | Recommending the fitment of standardised single point radiator mountings to cure 'jellying' on specific chassis. | ||
| View original record | XJ250. To PM. From Hs/Bn. c.c. to SG. c.c. to Wor. c.c. to EP. c.c. to Hd. c.c. to BY. Hs/Bn.3/WJ.5.9.30. V960 V951 V952 SINGLE POINT RADIATOR MOUNTING. 1-WJ. and Sir Henry Segrave's car, chassis… | ||
| Scan352 | Modifications to the radiator shutter bottom bearings for the 20/25HP model. | ||
| View original record | BY. FROM E . Copy to SG. Copy to HS. X7250 E1/M6.9.30. X7250 X5250 X5499 P. 2. RADIATOR SHUTTERS, & 20/25HP. We send herewith Lec. 2819. shewing modifications to the bottom bearings of the above for… | ||
| Scan353 | Sources of friction in radiator shutters and proposing a solution. | ||
| View original record | X 7250. From Hs/Rm. c. to By. Hs/Rm.1/MJ.8.9.30. 17250 X3499 SHUTTER FRICTION. We have been going into the question of reducing the amount of friction in the radiator shutters. We find that one of the… | ||
| Scan354 | Blueprint of shutter operating toggles. | ||
| View original record | SHUTTER OPERATING TOGGLES AS SHEWN ON E77676 A B C | ||
| Scan355 | Date stamp from the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 8 SEP 1930 DERBY. | ||
| Scan356 | Test report on the performance of radiator shutters fitted with a thermostat and spring. | ||
| View original record | To Hs. From GWH. x7-250. Hs/GWH.1/MJ. 8.9.30. x7250 Y3499 RADIATOR SHUTTERS. We have tried out the thermostat with a spring fitted to close the shutters on 25-EX. radiator. We find with the strongest… | ||
| Scan357 | Request to modify car 22-EX for radiator tests, specifically to change the radiator mounting. | ||
| View original record | RHC. From Hs/Rm. X7250 Hs/Rm.1/MJ.9.9.30. 22-EX. We wish to use this car for radiator tests and therefore it would be more convenient if it has the present standard instead of the single point… | ||
| Scan358 | Problems with the Phantom II Left Hand Chassis following 10,000 miles of testing. | ||
| View original record | COPY. X7250. To Sg. From Hs. c. to Wor. c. to Wmr. By. Hsl/AD9.9.30. X.7772. X.7941d. X.7250. X.3499 X.7310. X.7480. X.7080. PHANTOM 11 LEFT HAND CHASSIS. As a result of running 24-EX 10,000 miles in… | ||
| Scan359 | Modifications to the clutch, carburetter, and brakes for experimental cars. | ||
| View original record | we can overcome some of the faults with the present clutch by adding extra rivets, this is being done at once. 25-EX will go away with the new type clutch if the modifications now being tested make it… | ||
| Scan360 | Modifications to the Phantom II radiator tubes and the resulting impact on cooling performance. | ||
| View original record | TO R. FROM Hs. c. to ES. WOR. c. to R. Ds. c. to RV. PHANTOM - COOLING. Recent tests which have been carried out show on the Phantom II cooling is not now as good as/the original cars. It will be… | ||
| Scan361 | Concluding page of a report comparing a subject to the original Phantom II, stating a complete report is in preparation. | ||
| View original record | -2- Ha.2/SL.1.D.R.30.Contd. compared with the original Phantom 11. This is briefly the position, a complete report is being prepared. Hs. | ||
| Scan362 | The production and testing of square tube radiators using brass and copper. | ||
| View original record | DY/CS. c. Hs. c. AHC. X 250. BY3/G.11.9.30. RADIATORS. During my recent visit to WW. R. raised the question again of the square tube radiator which we had recently produced. He now expresses a desire… | ||
| Scan363 | The production status of radiator tubes ordered from I.C.I. Metals Ltd. for the M2 Series chassis. | ||
| View original record | By. c. to Hs. X7250 ROY/MS2/P.11.9.30 40/50-HP CHASSIS - M2 SERIES - RADIATOR TUBES. As requested we wrote I.C.I. Metals Ltd. and asked them to suspend work on Radiator Tubes to Order 3664 for "M2"… | ||
| Scan364 | Radiator thermometer test with results at 30 and 45 m.p.h. | ||
| View original record | To Hs. From GWH. X7250. X7250 X794/1 Rolls-Royce. 24-EX. 12.9.30. Two thermometers fastened, one each side of the matrix of the radiator so that bulbs of the thermometers were 6 ins. from top and 10… | ||
| Scan365 | Replacing experimental parts with standardised centre point radiator mountings on specific cars. | ||
| View original record | To BY. From Hs/Rn. c. to RHC. c. to AJL. Hs/Rn.3/WJ.15.9.30. X.7250. X.7960. X.7518. CENTRE POINT RADIATOR MOUNTING. We have arranged to replace the Experimental parts fitted to 1-WJ. and 80-WJ. with… | ||
| Scan366 | Urgency of testing a non-spilling radiator filler cap to solve a water pumping issue. | ||
| View original record | H3 ry?so. PH? To BV from Sg Copy to Hs. Wor. re Non-spilling Radiator Filler Cap. LeC.2187. Sgl/E15.9.30 Referring to E3/M.11.9.30 would you please let me know how soon you expect to be able to test… | ||
| Scan367 | Development of a new, larger, non-spilling radiator filler cap and proposing it become standard for the N.2 series. | ||
| View original record | Sg. c. R. c. Wor. c. Hs. X7250 BY16/G.15.9.30. RECEIVED SEP 16 1930 LeC. 2187. RE NON-SPILLING RADIATOR FILLER CAP. The parts for the above scheme referred to in your memo Sgl/E.15.9.30. and which was… | ||
| Scan368 | Actions on various batches of radiator tubes for the 40/50 HP N.2 Series Chassis. | ||
| View original record | X 7250. c.c. c. Hs. c. BT/CS. (Struck through) RECEIVED 17 SEP 1930 (Stamp) BY/G.15.9.30. 40/50 HP. CHASSIS. N.2 SERIES RADIATOR TUBES. Referring to ROY/Ms2/F.11.9.30. which was the result of the… | ||
| Scan369 | Design requirements for thermostatically controlled radiator shutters and cooling system improvements. | ||
| View original record | HS. FROM R. C. to SG. WOR. C. to BY. DA. X7280 R3/M16.9.30. THERMOSTATICALLY CONTROLLED RADIATOR SHUTTERS. X.7250. X.5250. X.3499. We do not want any springs on the thermostat working the radiator… | ||
| Scan370 | Radiator cooling problems on the Phantom II model, specifically an alteration that increased running temperatures. | ||
| View original record | H3 X 7250. x266 To Hs. from Sg. re Phantom - Cooling. Sg9/E16.9.30 Copy to Wor. Er. [Struck through] DA. PT. [Struck through] In your Hs.2/MJ.9.9.30 you mentioned that soon after we had despatched a… | ||
| Scan371 | Radiator cooling issues on Phantom I and II models, leading to the adoption of a more efficient square tube radiator. | ||
| View original record | To Sg. From Hs. c. to Nor. c. to E. c. to De. c. to Wy. re. Phantom - Cooling. Replying to Sg3/E16.9.30. It is correct that the serious troubles with stopped up radiators occurred on Phantom 1. At the… | ||
| Scan372 | Use of unpolished 'Staybrite' shutters on experimental cars to test their appearance and durability. | ||
| View original record | AJL Hs. C. Wor. (crossed out) x7250 BY1/G.20.9.30. x7250 x3499. x4111. EXPERIMENTAL CARS - SHUTTERS. We consider that at least half of the experimental cars should be fitted with the unpolished type… | ||
| Scan373 | Modification to the thermostat linkage to resolve issues with radiator shutter friction. | ||
| View original record | X9250 HS. FROM E. E5/M20.9.30. Copy to SG. Copy to BY. RADIATOR SHUTTER FRICTION. X.3499. X.7250. Referring to HS/RM1/MJ 8930., we have had the question of the linkage operation of the shutters in… | ||
| Scan374 | Status of orders and conversions for radiator tubes for the 40/50-HP Chassis N2 Series. | ||
| View original record | by. c. to Hs. RECEIVED SEP 24 1930 x7250. ROY/MS6/P.23.9.30. 40/50-HP CHASSIS - N2 SERIES RADIATOR TUBES. In reply to yours BY7/G.15.9.30. 1/ (a) In accordance with your memo we have instructed I.C.I.… | ||
| Scan375 | Letter from I.C.I. Metals Limited concerning the production, conversion, and pricing of tubes. | ||
| View original record | Copy. LION WORKS WITTON BIRMINGHAM. 22nd Sept. 1930. Messrs. Rolls-Royce Ltd. Derby. ------ Dear Sirs, Your Ref:- ROY/MS1/P. With further reference to your letter of 16th inst in connection with the… | ||
| Scan376 | Request to fit a dented tube matrix radiator to car 19-EX to be sent to Brooklands. | ||
| View original record | X)250 To RHC. from Hs/Rn. Hs/Rnl/AD23.9.30. Will you please arrange to fit the dented tube matrix radiator to 19-EX at the earliest possible moment as we are waiting to send this car to Brooklands.… | ||
| Scan377 | Correcting a prior analysis of radiator efficiency for the Phantom II, specifically regarding an error in tube size measurement. | ||
| View original record | X7250. To R. From He/Hn. C. to Mr. GT. C. to S. SH. C. to Mr. AV. He/Hn.1/WJ. 24.9.30. X7250 X7266 PHANTOM II COOLING - RADIATORS. In He/Hn.2/ADPT.4.30 we gave figures comparing this square tube… | ||
| Scan378 | Radiator cooling efficiency, comparing direct versus indirect methods, with a supporting graph. | ||
| View original record | -2- He/ma.1/W.24.9.30.Contd. of 150 miles per hour. These results rather confirm what we have been thinking recently, that is that for low air velocities through the core, indirect cooling surface is… | ||
| Scan379 | Radiator efficiency, heat dissipation, and a comparison of different radiator tube types. | ||
| View original record | -3- we dissipate about 19 1/2 H.P. per sq. foot of frontal area /100° F. difference in temperature between the mean radiator temperature and the atmospheric temperature, which corresponds to the… | ||
| Scan380 | Technical comparison of different radiator tube designs, focusing on shape, surface area, and thickness. | ||
| View original record | -4- Again, from surface, free air area, and direct cooling we should expect the square tube radiator to equal the 3/7m.m. radiator in efficiency. The results shew, however, that the round tube, which… | ||
| Scan381 | Improving engine cooling performance by modifying radiator tubes and assessing temperature changes. | ||
| View original record | -5- He/Gp.1/JAL.24.9.30.Contd. It would seem reasonable that when we use tubes that are not expanded at the ends, the thickness might be slightly reduced. A reduction of .002 in the thickness of the… | ||
| Scan382 | Continued page discussing the success of the Chrysler radiator design and its potential drawbacks. | ||
| View original record | -6- HS/RM.1/AL.24.9.30.Contd. of our car speed range. We believe that the success of the Chrysler radiator is due to the considerable percentage of indirect cooling and large area of surface obtained… | ||
| Scan383 | Comparative table analyzing the performance of various radiator tube designs. | ||
| View original record | TABLE DATA: Column Headers: DESCRIPTION OF RADIATOR TUBE. | NO.OF TUBES | SURFACE OF TUBES IN CONTACT WITH AIR. SQ.FT. | FREE AIR AREA RADIATOR TUBES. SQ.INS. | % FREE AIR AREA RADIATOR. | % DIRECT… | ||
| Scan384 | Graph comparing the performance of different types of radiator cores for slow-speed cooling. | ||
| View original record | TITLE: TYPES OF RADIATOR CORE FOR SLOW SPEED COOLING Y-AXIS: H.P. DIS. PER SQ. FT. FRONTAL AREA. PER 100° DIFF. IN TEMP. X-AXIS: AIR SPEED THROUGH MATRIX M.P.H. HANDWRITTEN NOTE: Present Test DIAGRAMS… | ||
| Scan385 | Blank document page with a Print Room reception stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 24 SEP 1930 DERBY.. | ||
| Scan386 | Drawing of a square matrix tube with annealing and pressure test instructions. | ||
| View original record | E80239. TUBES TO BE ANNEALED BY THE SUPPLIERS AGAINST SEASON CRACKING ONLY. LENGTH OF TINNING. APPROX. NET WT. OF 1 TUBE = 1 LB. 4 OZ. EACH TUBE TO BE TESTED TWICE & NOT BY THE SAME OPERATIVE, FIRST… | ||
| Scan387 | With a sketch comparing a parallel tube and a bulged tube. | ||
| View original record | Parallel □ Tube E81385- Bulged □ " E81389. 16 / L62 ROLLS-ROYCE, LIMITED PRINT ROOM, 25 SEP 1930 | ||
| Scan388 | The inspection of radiator tubes to determine variations in size and ovality. | ||
| View original record | X7250. To Hs/Rm. from RHC. RHC1/BE25.9.30. Re: Radiator Tubes. We have inspected various batches of tubes to ascertain what variation there is with regard to size and ovality, figures of which are… | ||
| Scan389 | Table detailing measurements and tolerances for radiator matrix tubes across various production batches. | ||
| View original record | E 79448 RADIATOR MATRIX TUBES BATCH N° / MAX. OVERSIZE IN BORE / OVALNESS / VARIATION IN BORE 21 / +.0025 / .002 / .001 27 / +.0025 / .0025 / .001 29 / +.0015 / .002 / .001 34 / +.0012 / .002 / .001… | ||
| Scan390 | Request to build a 6mm parallel square tube radiator for the 19-EX car, for testing at Brooklands. | ||
| View original record | RHC. From Hs/Rn. X7250. Hs/Rn. 5/MJ. 29. 9. 30. SQUARE TUBE RADIATOR. Will you please build up the first 6 m.m. parallel square tube radiator to fit 19-EX car, i.e. same specification as the dented… | ||
| Scan391 | Improvements to the radiator and cooling system for the P.2 & 25HP cars. | ||
| View original record | HS/RM. FROM R. R2/M29.9.30. X/7250 C. to - SG. C. to - WOR. C. to - By. CAR WORK. P.2. & 25HP. COOLING. X.766 X.7250 X.5250 Referring to HS/RM1/MJ 24930., I am very pleased to hear that you agree with… | ||
| Scan392 | Holding material for a new square type radiator and trials comparing horizontal vs vertical louvres. | ||
| View original record | 196 COPY. X7250 R. c. Sg. c. Wor. c. Hs. X.7250. X.5250. X.766. BY10/G.30.9.30. RADIATORS. Referring to R2/M29.9.30., we are holding 2/3rds.of the material in N.2. series with the hope of introducing… | ||
| Scan393 | Modifications and feedback on a vehicle's cooling system. | ||
| View original record | HS. FROM R. X/280 R4/M.10.30. C. to SG. WOR. BY. C. to E. DA. C. P. 2. COOLING. X.7260. X.766. X.7280. X.1085. We were very pleased to see that some of the features we have suggested have been made,… | ||
| Scan394 | Corrosion issues with unpolished staybright radiator shutters and experimenting with different finishing methods. | ||
| View original record | To BY. From Hs/AJL. c. to Wor. c. to Hs. J7250. Hs/AJL.2/MJ.3.10.30. X.7250. X.3499. UNPOLISHED STAYBRIGHT SHUTTERS. With reference to BY1/G20.9.30., it may be remembered that we attempted to produce… | ||
| Scan395 | Inconsistent test results for a square tube radiator at Brooklands. | ||
| View original record | x7-50. To From Hs. c. to EG. Mr. c. to W. DA. c. to A. c. to EV. Hs.1/MJ.7.10.30. SQUARE TUBE RADIATOR. X.7250. X.788. X.766. Tests were carried out on Brooklands last week with the square tube… | ||
| Scan396 | Requesting a comparative test between two radiator types and their fitting to car 20-EX for towing tests. | ||
| View original record | Mr. G. Ratcliffe, Blue Anchor Hotel, Byfleet, SURREY. From Hs/Rn. X.7250. X.766. [Handwritten] 7250 Hs/Rn.3/MJ. 8.10.30. Thank you for your results. When you have finished the tests on the five… | ||
| Scan397 | Car overheating issues, referencing Gallay radiators and feedback from a client in Italy. | ||
| View original record | COPY. X7250. X.766. X.7250. To Hs. From Sg. Re. Overheating. Sg11/E13.10.30. c. to Wor. I have been reading with interest Hs/Rn.3/MJ. 7.10.30 relative to cars seen and tried by Rn. in London and… | ||
| Scan398 | Table showing the results of various radiator and louvre configurations tested at different speeds. | ||
| View original record | TYPE OF RADIATOR 30 M.P.H. Full Throttle. ST Top Water & Ats. | Mean Water & Ats. 45 M.P.H. Full Throttle. ST Top Water & Ats. | Mean Water & Ats. 60 M.P.H. All Closed. ST Top Water & Ats. | Mean… | ||
| Scan399 | Comparison of weight and dimensions between solid strip and rolled strip radiator tubes. | ||
| View original record | HS/RM. x7250 RHC1/CEP14.10.30. RE RADIATOR TUBES. Replying to information asked for :- No. of tubes. Type. Weight. 162 Solid strip 336 ozs = 21 lbs. 162 Rolled strip 76 ozs = 4.75 lbs. Saving on… | ||
| Scan400 | Proposed solution for overheating by improving radiator efficiency with indented tubes. | ||
| View original record | To Sg. from Hs. c. Wor. X7750. X. 766. X. 7250. HS2/ADM.10.30. OVERHEATING. Ref. Sgll/E13.10.30. We have sent to you today a further report on overheating. The most important point shewn up in these… | ||
| Scan401 | Sixth Brooklands Report on a series of tests conducted on six different types of radiator core. | ||
| View original record | To from Hs/Rm. [Handwritten] J 7250 c. S.S. [crossed out] c. HOT. E. [crossed out] c. Dm. By. Hs/Rm1/AD14.10.30. [Handwritten] x7250 x766 x788 SIXTH BROOKLANDS REPORT. We have now completed a series… | ||
| Scan402 | Continuation of a report detailing tests on various radiator tube designs to improve performance and save weight. | ||
| View original record | Hs/Rml/AM14.10.30 contd. -2- confirming the figures in this test as though they are comparative we suspect that the car's performance was not 100%. We had hoped for over 10° improvement from this… | ||
| Scan403 | Report comparing the efficiency of different radiator tubes and a Gallay radiator. | ||
| View original record | Hs/Rul/ADL4.10.30 contd. -3- At higher speeds, however, the difference becomes appreciable, presumably due to the greater free air area of the square tube. (4) 5/7 Round Tubes. These results again… | ||
| Scan404 | Radiator tube tests, comparing samples from Rolls-Royce of America with other designs. | ||
| View original record | -4- Since completing these tests we have received a sample radiator tube from Rolls-Royce of America. These tubes are hexagon ended, round centred copper tubes, 9 mm. across the flats and 7.66 mm. on… | ||
| Scan405 | Performance comparison of square and round radiator tubes at full throttle and low speeds. | ||
| View original record | COMPARISON OF SQUARE & ROUND TUBES AT FULL THROTTLE LOW SPEEDS. FULL THROTTLE TEST. CAR BRACED TO MAINTAIN REQ'D SPEED. TYPES OF RADIATOR MATRIX. ALL CLOSED. 50 M.P.H. | 45 M.P.H. LOUVRED BONNET. 30… | ||
| Scan406 | Comparative analysis of different radiator types, detailing performance under various conditions and physical specifications. | ||
| View original record | FIGURES GIVEN ARE CRITICAL ATMOSPHERIC TEMPERATURE AT WHICH THE CAR WILL EVENTUALLY BOIL IF DRIVEN SUFFICIENTLY LONG. DETAILS OF RADIATOR. TYPE OF RADIATOR TUBES. | 60 M.P.H. NO BONNET VENTILATION |… | ||
| Scan407 | Graph of water flow tests on a PII No 7 unit with a standard radiator. | ||
| View original record | WATER FLOWS TESTS ON PII N° 7 UNIT. STANDARD RADIATOR (E. 77675) OFF PRODUCTION STANDARD CIRCULATION DELIVERY GALLS/MIN. PRESSURE LBS/SQ" DEPN LBS/SQ" LBS/SQ" PRESSURE DELIVERY SIDE PUMP BOTTOM WATER… | ||
| Scan408 | Heavily faded internal document with a purple company stamp. | ||
| View original record | The majority of the document's text is illegible due to severe fading. The only readable text is from a purple ink stamp in the bottom right corner: ROYCE, LIMITED [illegible]T ROOM, 14 OCT 1930 BY… | ||
| Scan409 | Fitting radiators with different types of dented round and square tubes. | ||
| View original record | RHC. from Hs/Rn. X7250. Hs/Rn3/ADL4.10.30. RADIATOR TUBES. We wish to fit up another radiator with 6-7 1/2 mm. round tubes having dents in them. We consider that in view of the American tube we ought… | ||
| Scan410 | Improvements to radiators and bonnets, including square tubes, overflow valves, and bonnet vents. | ||
| View original record | HS. } FROM R. EY. } Copy to SG. Copy to WOR. Copy to E. DA. EV. X/250 R1/M14.10.30. RADIATORS & BONNETS. SQUARE TUBES? OVERFLOW VALVE, & BONNET VENT. X.7250 X.5260. X.5250. X.1085. X.7260. X.766.… | ||
| Scan411 | Efficiency improvements gained by adding indentations to radiator tubes to solve overheating issues. | ||
| View original record | COPY. X7250. To Hs. From Sg. c. to Wor. Re. Overheating. Sg12/E15.10.30. X. 766. X. 7250. X. 5250. Thanks for Hs2/ADL4.10.30. I am very much interested to learn of the improvement in efficiency which… | ||
| Scan412 | Proposing an experimental modification for the 40/50 HP Radiator Suspension Spring, Type HS.299. | ||
| View original record | 87250. c.HS/RM. RHC (92) 16so BY/SS10/J.15.10.30. 40/50 H.P. Radiator Suspension Spring Type HS.299. With reference to the Experimental request for a definite radial location in the cross member of… | ||
| Scan413 | Overheating issues and radiator modifications on the Phantom II model. | ||
| View original record | To Sg. From Hs. c. to Wor. X7250. Hs.4/MJ.18.10.30. X.766. X.7250. X.5250. OVERHEATING. Replying to Sg12/E15.10.30. R. has agreed that we can on existing round tubes add the indentations to increase… | ||
| Scan414 | Results of radiator tests, comparing different tube and bonnet designs. | ||
| View original record | To R. From Hs/Rn. c. to SE. Wor. c. to E. De. c. to RV. X7250. Hs/Rn. a/16J. 20.10.30. X. 766. X. 7250. X. 5250. RADIATOR TESTS. We have now confirmed the results obtained on the turbulent flow… | ||
| Scan415 | Radiator design, comparing 7mm square tubes with round tubes for improved performance and cost-effectiveness. | ||
| View original record | -2- we use 7 m.m. square tubes expanded horizontally only, and arranged with bulges for turbulence we shall have a radiator that is about 10º C. better than our present standard and one that will not… | ||
| Scan416 | Table comparing critical atmospheric temperatures for different radiator types under various driving conditions. | ||
| View original record | TYPES OF RADIATOR. VERTICAL LOUVRES FULL THROTTLE. NO BONNET VENTILAT ALL OV 30 M.P.H. 40 M.P.H. 50 M.P.H. 6 ms. Parallel Sq. Tube. E.81385. 30.25 34.0°C. 42. 33 6/7¼ ms. Turbulent Flow Tubes. 26.0… | ||
| Scan417 | Immediate implementation of a tube indentation modification to prevent overheating. | ||
| View original record | To Wor. from Sg. Copy to Hs. BY. re Overheating. Sg9/E21.10.30 RECEIVED 22 OCT 1930 HS Handwritten notes: H/S X7250. x5250. x760. Referring to Hs.4/MJ.18.10.30 and former correspondence as the… | ||
| Scan418 | The disposal of two custom-built, more efficient radiators. | ||
| View original record | CEP. From Hs/Rn. c. to Hm. c. to HY. X7250. Hs/Rn.2/WJ.23.10.30. RADIATORS. We have two radiators to arrangement E.77675 built up with 5½/7 mm. tubes. These are now no further use to us and we should… | ||
| Scan419 | Letter regarding radiator tube gauges and suspension 'pitching' issues for the Phantom II model. | ||
| View original record | Hm. (Paris). From Hs/Rm. y7^250 Hs/Rn.1/MI.24.10.30. We send you herewith two small gauges which you may find useful on radiator tubes and also a photostat shewing the various types of tubes that have… | ||
| Scan420 | Fitting and testing of new square and round tube radiator matrices. | ||
| View original record | To RHC. From Hs/Rm. Hs/Rm.5/MJ.24.10.30. We are handing to you a 5 3/7 mm. radiator. Will you please fit the new square tube dented matrix to this radiator. The 5 3/7 matrix removed should be… | ||
| Scan421 | Recommending the immediate adoption of indented radiator tubes to solve an overheating issue. | ||
| View original record | To Sg from Wor. Copy to Hs and BY. x7250. Wor3/T.25.10.30. Re Overheating - Sg9/E21.10.30. x7250. x525n. x766. We all do agree that we can, without risk, proceed to make Radiator Tubes with the simple… | ||
| Scan422 | Criticisms and potential improvements for vehicle bonnets and radiators. | ||
| View original record | X7250 TO HS. FROM EV. EV1/25.10.30. COPY TO BY. E. BONNETS. ETC. X.5250. X.7260. X.5260. X.7250. We have received various criticisms of our bonnets and radiators. This memo is an attempt to summarise… | ||
| Scan423 | Design suggestions for a detachable filler cap, horizontal louvres, and bonnet sides. | ||
| View original record | (2) EV1/25.10.30. cont. (h) A quickly detachable filler cap has been suggested. We have one for the petrol tank on N.2. series, but that design would not be suitable for the radiator. It would be… | ||
| Scan424 | Request to fit a radiator with a new W.W. scheme of centre point mounting to the 'Bump' chassis for testing. | ||
| View original record | To RHC. From Hs/Rn. 87250. Hs/Rn.2/MJ.27.10.30. Will you please fit the radiator having the new W.W. scheme of centre point mounting to the Bump chassis so that we may run it before it is fitted to… | ||
| Scan425 | Agreeing to proceed with a modification to radiator tubes to solve overheating issues. | ||
| View original record | H3 n250. X 250. x1-50. x2-50 66. To Wor. from Sg. Copy to Hs. BY. re Overheating. Sg/E27.10.30 Thanks for WorB/T25.10.30. I am pleased to note that all agree that we can without risk proceed to make… | ||
| Scan426 | Design and cost of square versus round radiator tubes and advocating for modern bonnet shutters. | ||
| View original record | HS X7250. To-Wor. From Sg. re Radiators & Bonnets. Sg18/E27.10.30 Copy to Hs. By. EV. - Square Tubes, Overflow Valve and Bonnet Vent. x7250 x5280 x5260 x1085 1766 I have just seen R1/W14.10.30. I am… | ||
| Scan427 | Performance of square versus round radiator tubes and bonnet ventilation design. | ||
| View original record | To Wor. from Hs/Rm. x7250 Hs/Rml/MS30.10.30. X.7250. X.5260. X.5250. X.1085. X.7260. X.766. Re: Radiators and Bonnets. With reference to Sg18/E.27.10.30, We think that the real facts that "R" had in… | ||
| Scan428 | Radiator and acceleration test results from Brooklands. | ||
| View original record | COPY. X7250 To Rn. From G. Radcliffe. X.788. X.766. X.7250. 29/31.10.30. 19-EX. RADIATOR TESTS ON BROOKLANDS. Figures given are average max. attained (2 tests each) Std. Round Tube Rad. Std. Round… | ||
| Scan429 | Quarterly report on customer complaints regarding radiators, fabric couplings, and shock absorbers. | ||
| View original record | To Wor. From Hs/Rm. X7250 Hs/Rm.13/MJ.3.11.30. X.4117. X.7250. X.7520. QUARTERLY COMPLAINTS. (1) RADIATORS. - Tests have been conducted which shew that if we put eight dents per tube into the radiator… | ||
| Scan430 | Stock and availability of radiators for the Phantom II. | ||
| View original record | Sèvres /W "Hs". X 7250. HmII/VA/GM.5.II.30 re: Radiators Phantom II We thank you for your memo Ms/Rm.2/MJ.23.10.30 Our Stores have two radiators to arrangement Drwg. E. 77675 in stock and these are… | ||
| Scan431 | Results of radiator tests comparing different tube designs at Brooklands. | ||
| View original record | To R. From Hs/Ra. c. to Sg. Mor. c. to E. Dm. c. to RV. 87250. Hs/ml/W.6.11.30. x7250 x8250. x788. RADIATOR TESTS. We have carried out further radiator tests on Brooklands. Since the latest 6 mm.… | ||
| Scan432 | Continued memorandum discussing the use of wind tunnels for winter testing. | ||
| View original record | -2- Hs/Bn.1/WL.6.11.30.Contd. economical way of getting results during the winter would be by means of a wind tunnel. we think that we have sufficient full scale results to be able to interpret wind… | ||
| Scan433 | The non-production of the E.81389 tube for the Phantom II square radiator, recommending an order be placed. | ||
| View original record | O.O. From Hs/Rn. c. to By. N=250. Hs/Rn.2/MJ.10.11.30. PHANTOM II SQUARE RADIATOR TUBES. We note that E.81389 tube has not been produced. We understand that the tools for producing this tube are… | ||
| Scan434 | Two complaints of leaking radiators found during a visit to Cricklewood. | ||
| View original record | X7250. To BY. From Hs/GWH. Hs/GWH.2/MJ.20.11.30. There were two complaints of radiators leaking at the seams of the top tank during my visit to Cricklewood. These were :- 87-GN. Hoopers. Staybright.… | ||
| Scan435 | Test report on a thermostat marked 'A', detailing water temperature readings and a jamming failure which caused the engine to boil. | ||
| View original record | *7250. 22-EX. Thermostat marked A. Water temperatures were taken every five minutes. 57.5) 57.5) Speed of car 30 m.p.h. (approx.) 60. ) 61. ) 61. 62. 60. Speed of car 40 m.p.h. (Approx.) 60. 60. 62.… | ||
| Scan436 | Evolution of induction systems and carburetter heating, including thermostatically controlled shutters. | ||
| View original record | HS. FROM R. X/7250 H1/M25.11.30. C. to SG. WOR. C. to EY. EP. CAR WORK - THERMOSTATICALLY CONTROLLED SHUTTERS. X.7250. X.3499. It is somewhat difficult to exactly understand all the moves and… | ||
| Scan437 | Thermostat settings and 'B' filling for the Phantom II model. | ||
| View original record | x7-50. To BY. From Hs/Rn. Hs/Rn.1/MJ.29.11.30. X. 7250. X. 3499. THERMOSTAT FOR PHANTOM 11. You will note that in RL/M25.11.30 R. agrees to the advisability of allowing a high temperature before the… | ||