Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Secret memorandum regarding the weight of the crankcase and a request to investigate potential weight reduction. | ||
| View original record | To BY. from E. c. to CJ. HS. X8000 [handwritten] S E C R E T. E3/M3.6.24. EAC.11. WEIGHT OF CRANKCASE. X.9000 [struck through, handwritten] X8000 [handwritten] X.9930 [struck through, handwritten] X… | ||
| scan0002 | Secret memorandum detailing modifications to the EAC.2 crankcase to suit longer connecting rods. | ||
| View original record | (Handwritten at top): -X.9000- X8000 To BY. from E. c. to CJ. HS. S E C R E T. E2/M3.6.24. E.A.C.11. CRANKCASE. (Handwritten): X.9000 & X8000 We send you herewith drawing No. LeC.1878., shewing the… | ||
| scan0003 | Complaint about the weight of an E.A.C.II crankcase and proposing actions to investigate. | ||
| View original record | +8000 RHO. c. Hs. BY9/H. 5. 6. 24. E.A.C.II. CRANKCASE. +8000 R. is complaining of the weight of the crankcase of the above engine. Would you kindly have one cast for me and then cut it up so that we… | ||
| scan0004 | Modifying the crankcase to accommodate a larger ignition governor. | ||
| View original record | To BY. from E. c.c. to HS. X8000 S E C R E T. E2/M16.8.24. E. A. C. CRANKCASE & IGNITION GOVERNOR. X.9000 X8000 X.9140 X.8685 Regarding the above we find we shall require a larger hole in the… | ||
| scan0005 | Secret memo regarding the design and testing of crankcase oil baffles to reduce oil consumption. | ||
| View original record | X.8000 To BY. from E. S E C R E T. E2/M29.4.25. c. to CJ. Hs. E. A. C. CRANKCASE OIL BAFFLES. We send you herewith LeC.2057 shewing a design which should be tested experimentally with a view to… | ||
| scan0006 | Solution for an oil leak at the rear end of EAC and 20 HP engines. | ||
| View original record | To BY. from E. c. to CJ. Hs. /8000 E1/M27.8.25. EAC. AND 20 HP. ENGINES - OIL LEAK X.8000 REAR END. X.8980 X.5980 Referring to the oil leak on the rear fitting of the high pressure oil gallery pipe… | ||
| scan0007 | Use of shorter connecting rods on a lighter Phantom engine to reduce weight and crankcase height. | ||
| View original record | To Hs. from E. c. to CJ. c. to R. c. to RG. c. to BY. X8000 E2/M23. 2. 26. RE. LIGHTER PHANTOM ENGINE. X. 8840 X. 8000 X. 8030 In our memo. E1/M21.11.25 we asked for a test to be made of a Phantom… | ||
| scan0008 | Modifications to the Lighter Phantom Engine's connecting rods. | ||
| View original record | To Hs. from E. c. to BJ. R. BY. X8000 E3/M15.4.26. RE. LIGHTER PHANTOM ENGINE. X.8030 X.8840 X.8000 Regarding our last conversation respecting the possibility of shortening the Phantom con. rods you… | ||
| scan0009 | Oil flow measurements through bearings for car 67-TC. | ||
| View original record | Y8000 To Mx. from Hs/ACL. Hs/ACL1/LG6. 7. 26. RE. OIL FLOW THROUGH BEARINGS. Y8980 The results of the oil flow measurements on your car 67-TC shew that there is a flow of 1.95 pts/min. at 1000 r.p.m.… | ||
| scan0010 | Sending drawings for the Phantom Sports Engine regarding the crankcase, cylinder blocks, and valve gear. | ||
| View original record | To BY. from E. c. to BJ. Hs. X8000 E1/M31.8.27. PHANTOM SPORTS ENGINE. X. 8774 X. 8000 X. 8060 X. 8050 We send herewith drgs. LeC. 2421 and 2454 shewing various information regarding the crankcase,… | ||
| scan0011 | Proposed modifications to the Sports Phantom engine's crankchamber and related components. | ||
| View original record | Hs. from R. c. to BJ. Wor. c. to BY. E. 48040 R1/M19.9.27. SPORTS PHANTOM ENGINE. X.8774 X.634 X.8010 Further to my memo. R4/M15.9.27., it is now possible to give more information concerning the… | ||
| scan0012 | Recurring crack in the Phantom engine crankcase during high-speed testing. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. 48000 Hs/ACL1/LG24.9.26. RE. CRACK IN PHANTOM CRANKCASE. A crack has developed in the upper half of the crankcase of a Phantom test bench… | ||
| scan0013 | Considering a single block design for new cylinder blocks to reduce the possibility of a potential issue. | ||
| View original record | contd :- -2- While we do not think there is any immediate cause for alarm, because this trouble has not been evident on any of the cars tested here or in France, it would be interesting to consider if… | ||
| scan0014 | Blueprint diagram illustrating the position of cracks in a Phantom crankcase. | ||
| View original record | [ "OIL PUMP DRIVE", "CRACK IN WALL OF CRANKCASE", "CRACK", "TAPPET SIDE OF CRANKCASE SHEWING POSN OF CRACKS.", "OIL PUMP DRIVE COVER", "CRACKS", "POSITION OF CRACK IN PHANTOM CRANKCASE.", "STAMP:",… | ||
| scan0015 | Confirming the handover of sentinels for testing crankcase temperatures. | ||
| View original record | Hs. X8000 H11/EA26.9.27. Laboratory. Sentinels for Testing Crankcase Temperatures. This is to confirm that we have handed to Mr.Lovesay 36 sentinels for the above purpose. These comprised :- Quantity.… | ||
| scan0016 | Alterations to the Sports Phantom crankchamber design. | ||
| View original record | BY. from E. c. to BJ. Hs. X. 8000 E1/M1.10.27. SPORTS PHANTOM - CRANKCHAMBER. Would you kindly arrange to make the general thickness of the new crankchamber .225 instead of our present std. for… | ||
| scan0017 | Confirmation of a phone message from R. to Hs. about alterations required for a final sports car due to a broken crankchamber. | ||
| View original record | 48010 Hs. from R. CONFIRMATION OF 'PHONE MESSAGE FROM R. to HS. X. 8010 X. 8774 X. 8030 R3/M8.10.27. SINCE THE CONFERENCE WITH YOU IN LONDON THE SITUATION HAS CHANGED OWING TO THEBROKEN CRANKCHAMBER,… | ||
| scan0018 | Drawing LeC.2471 for the Sports Phantom oil strainer. | ||
| View original record | BY. from E. c. to BJ. Hs. X8000 E2/M8.10.27. SPORTS PHANTOM OIL STRAINER. X. 8200 X. 8010 X. 8190 We send herewith drg.LeC.2471 shewing the above, to enable you to complete the bottom half of the… | ||
| scan0019 | Design revisions for the Sports Phantom wheelcase and gears. | ||
| View original record | BY1/2 from E. c. to BJ. HS. X8000 E1/M8.10.27. SPORTS PHANTOM - WHEELCASE & GEARS. X. 8170 X. 8000 We send herewith LeC.2470 dealing with the above. This drg. shews a plain bearing carrier wheel which… | ||
| scan0020 | Implementing improvements for the Sports Phantom and the next 10,000 miles car. | ||
| View original record | To Hs. BY. From R. c. to BJ. Wor. c. to DA. E. X8010 R2/M8.10.27. SPORTS PHANTOM, AND NEXT 10,000 MILES CAR. X. 8350 X. 8774 X. 8940b X. 8010 It is realised that if we intend to try out certain… | ||
| scan0021 | Scheme for the Sports Phantom's oil level indicator and lower half crankcase. | ||
| View original record | BY, from E. c. to BJ. Hs. X8000 E1/M11.10.27. SPORTS PHANTOM - OIL LEVEL INDICATOR X.8000 AND LOWER HALF CRANKCASE. X.8200 We send you herewith LeC.2473 shewing the above. This scheme clears up the… | ||
| scan0022 | Modification to the oil gallery pipe for the Sports Phantom crankchamber. | ||
| View original record | X. 8000 TO BY. from E. c. to BJ. Hs. E1/M13.10.27. SPORTS PHANTOM CRANKCHAMBER. There is one point in connection with the above which we have omitted to mention, that is, the oil gallery pipe is being… | ||
| scan0023 | Improvements for a sports car, including a new crankchamber and piston, for a 10,000-mile test in France. | ||
| View original record | Hs. BY. from R. c. to BJ. Wor. SG. +8000 R1/M17.10.27. X.8774 X.8940b X.8000 SPORTS CAR AND NEXT 10,000 MILES IN FRANCE. It is agreed to make present chassis with all improvements except those… | ||
| scan0024 | Modifications to the Sports Phantom crankchamber. | ||
| View original record | X. 8000 BY. from E. E1/M/9.10.27. c. to BJ. Hs. SPORTS PHANTOM CRANKCHAMBER. Referring to the modification to the existing crankchamber to enable the first of the sports chassis to be built up with… | ||
| scan0025 | Design modifications to the Phantom engine, focusing on lowering the chassis and relocating engine accessories. | ||
| View original record | X8000 BY. from R. c. to Wor. Hs. Hy. R1/M28.10.27. RE. PHANTOM ENGINE. X.8770 X.8000 We contemplated two moves. We think this will be very expensive and delay lowering the chassis. To lower the… | ||
| scan0026 | Revolution counter drive on the 10-EX model, suggesting a camshaft drive as an improvement. | ||
| View original record | To DA/EV. from Hs./Rn. x8090 [crossed out] x8000 x912 Hs/Rn2/LG3.11.27 Herewith details of rev. counter as at present fitted on 10-EX. We have found this to be satisfactory but it would be much better… | ||
| scan0027 | Dimensional drawing for a revolution gauge casing. | ||
| View original record | [ "DIMENSIONS OF REV. GAUGE CASING.—10 EX.", "3.875 DIA", "3.650 DIA", "1.700 DIA", "2.000 DIA", ".093", "1.275", "2.225", "2.725", "2/11/27" ], | ||
| scan0028 | Design changes for the oil relief unit, gallery pipe, and crankchamber, referencing drawing Lec. 2483. | ||
| View original record | BY. from E. c. to BJ. Hs. X8000 E1/M9.11.27. EAC.14. OIL RELIEF UNIT AND GALLERY PIPE. X.8000 X.820B X.8190 We send herewith drg. Lec. 2483 shewing the oil relief unit, gallery pipe, and connections… | ||
| scan0029 | Engine suspension system for the Sports Phantom model. | ||
| View original record | BY. from E. c. to BJ. Hs. E1/M16.11.27. EAC.10 SPORTS PHANTOM. X.8005 ENGINE SUSPENSION. X.8000 We send herewith drg. LeC.2485 shewing the above. The engine is suspended both fore and aft on rubber,… | ||
| scan0030 | Design modifications for Sports Phantom main bearing caps. | ||
| View original record | X. 8000 BY. from E. c. to BJ. Hs. E2/M16.11.27. EAC.10 SPORTS PHANTOM MAIN BEARING CAPS. We send herewith LeC.2486 shewing the above. Compared with the steel caps we are using at present this cap has… | ||
| scan0031 | Revised design of the crankshaft and connecting rods for EAC.10 & 14 models. | ||
| View original record | BY: from E. c. to BJ. Hs. +8000 E1/M25.11.27. X.8010 X.7010 X.8030 X.7030 X.8000 EAC.10 & 14 CRANKSHAFT AND CONN. RODS. ------------------ We send you herewith LoC.2488 shewing the revised crankshaft… | ||
| scan0032 | Casting in aluminium and bronze, focusing on achieving the strongest and lightest castings for crankchambers. | ||
| View original record | Hs. BY. from R. RC. c. to BJ. Wor. DA. E. X8000 R1/M1.12.27. RE. CASTING IN ALUM: X.8000 AND BRONZE+ X.1476 It will be realised that it is of the utmost importance to get the strongest and lightest… | ||
| scan0033 | Request to measure the Young's Modulus of Elasticity for various crankcase materials. | ||
| View original record | To Hl. from Hs/Tsn. X8000 Hs/Tsnl/LG29.8.28. COMPARATIVE RIGIDITIES OF CRANKCASE MATERIAL. X8000 X.3992 The materials for which we should like you to measure the Young's Modulus of Elasticity are as… | ||
| scan0034 | Standardisation report for a felt strip on the engine guard to prevent mud ingress. | ||
| View original record | RR 755 (10H) (DB130 12-9-24) MS 301225 STANDARDISATION of CHASSIS PARTS. COMPLETED 16.3.26 Description of Parts FELT STRIP ON ENGINE GUARD. Origin. To keep out the mud. [Box X No. 8001] Drawing No.… | ||
| scan0035 | Proposal to increase the stiffness of the E.A.C. engine's front-end carrying tube by inserting an inner tube. | ||
| View original record | X8005 Hs. BY7/H. 25. 2. 25. TUBE CARRYING FRONT END OF E.A.C. ENGINE. I am of the opinion that we should at once introduce a second tube inside the first, ground to size, tapered at the front end, and… | ||
| scan0036 | Revision of engine front bearer tubes, detailing a new drawing, stress reduction, and material choice. | ||
| View original record | To BY. from E. c. to CJ. HS. X. 8005 S E C R E T. E. A. C. E1/M28.2.25. ENGINE - REVISED FRONT BEARER TUBES. X. 8005 We send herewith drawing LeC.2008., shewing the above, to replace the tube with… | ||
| scan0037 | Dispatch and testing of new double-tube engine bearers. | ||
| View original record | X8005 Hs. BY4/H. 3. 3. 25. 98-NK. ENGINE BEARERS. Why not despatch a pair of engine bearer tubes made up of new double tube, and sweated? This would enable us to decide if the new scheme could be left… | ||
| scan0038 | Secret memo discussing three manufacturing schemes for the engine's front bearer tube, comparing cost and materials. | ||
| View original record | X8005 To E. & BY. from R. c. to CJ. BJ. DA. RG. HS. S E C R E T. R2/MMO.3.25. E. A. C. ENGINE - FRONT BEARER TUBE. X. 8005. The solid forging can go forward to BY. but I fear this will be expensive..… | ||
| scan0039 | Particulars for engine bearer arms, including dimensions, material, and heat treatment. | ||
| View original record | 48005 Mr.Shelton. c. Hs. BY5/H. 16. 3. 25. ENGINE BEARER ARMS. -------------------- We must give particulars of the tube, i.e. a/- Length. b/- Inside diameter. c/- Outside diameter. d/- 3½% Nickel… | ||
| scan0040 | Secret memo regarding particulars for Engine - Front Suspension Tubes. | ||
| View original record | X.8005 To BY. from E. S E C R E T. E5/M17.3.25. c. to CJ. HS. E. A. C. ENGINE - FRONT SUSPENSION TUBES. X.8005 We send herewith LeC.2027., giving complete particulars of the above. We have already… | ||
| scan0041 | The failure of a new front engine suspension design for the 98-NK car. | ||
| View original record | To E. from Hs. c. to BN. X.8005 S E C R E T. Hs1/LG20.3.25. EAC. 'V' SERIES. FRONT ENGINE SUSPENSION. 98-NK car is running France with the Engine Suspension with the reinforced tube brazed into the… | ||
| scan0042 | Telegram discussing a coupling failure, accepting fault and proposing design modifications. | ||
| View original record | Hs. E. Da. c. also sent to AJS. X 8005 Copy of Telegram received from R. 7.4.25. ------------------------------------- JUST RECEIVED STENT'S MEMO CONCLUDE COUPLING FAILURE OUR FAULT BELIEVE… | ||
| scan0043 | Production difficulties with the load specification for a Torque Reaction Damper. | ||
| View original record | To Hs. To RHC. To Sft. X 8005 U.W. BY/SS3/DB.9.6.25. Re EAC. - Torque Reaction Damper. - Sec:5001. We understand the Works are having difficulty in obtaining the 20 lbs. load at 4.35 rad: specified to… | ||
| scan0044 | Urging a decision on Spring F.1456 for the Torque Reaction Damper to avoid production delays. | ||
| View original record | [Handwritten] X8005 [Stamped] U.W [Handwritten, struck through] BY/SS. [Typed, struck through] c. Hs. [Typed, struck through] c. RHO. SFT12/EMM.11.6.25. EAC. TORQUE REACTION DAMPER. SEC.5001. Memo.… | ||
| scan0045 | Test loading for EAC Torque Reaction Dampers, requesting testing to find the lowest allowable loading range. | ||
| View original record | To Hs. C. to RHC. C. to Sft. X8005 BY/SS8/DB.18.6.25. Re EAC - Torque Reaction Damper - Sec:5001. With further reference to our memo regarding the loading of the EAC. Torque Reaction Dampers, we have… | ||
| scan0046 | Requesting the creation of drawings and manufacture of an E.A.C. Engine Front Bearer Tube in nickel steel. | ||
| View original record | X8005 Mr. Shelton. c. Hs. BY8/H. 2. 3. 25. E.A.C. ENGINE FRONT BEARER TUBE. I am handing you herewith copy of E1/M. 28.2.25. and blueprint of LeC.2008. Would you kindly arrange to make the necessary… | ||
| scan0047 | Spare wheel carriers, front engine suspension, and bumpers. | ||
| View original record | To CWB. from Hs. X8005 X8990 Hs7/LG12.3.26. With reference to the attached correspondence from Pt. Spare wheel carriers. We assume from the report that it is the spare wheel carrier on the side of the… | ||
| scan0048 | Use of a damper for mounting the Eagle 16 engine to steady movement. | ||
| View original record | 48005 To Hs. from E. c. to BJ. R. RG. E3/M16.4.26. RE. EAGLE 16. ENGINE MOUNTING. X.4114 X.4550 X.8005 We have always had in view that the tail of E.16. engine, which would normally be the blower,… | ||
| scan0049 | Issues with back axle controls, universal joints, and torque tube control. | ||
| View original record | [Handwritten: V8005] To Hs. Da. } FROM R. E. RG. } c. to BJ. Wor. BY. RE. BACK AXLE CONTROLS AND UNIVERSAL JOINTS. [Handwritten: V8005 (crossed out) X4183 X8350] OY. wrote some months ago about the… | ||
| scan0050 | Requesting the creation of parts for engine mounts and a magneto adaptor, with an enquiry about sourcing improved fabric discs. | ||
| View original record | To RHC. from Hs/Rm. X8005 Hs/Rm2/LG1 8.10.26. Attached herewith are :- X8796 (1) Sketches for a rubber bush mounting for the front of the engine. (2) Sketch for increasing the flexibility of the… | ||
| scan0051 | Mean Effective Pressure limitations due to detonation and reaction vibrations. | ||
| View original record | +8005 To Hs. E. from R. c. to BJ. Wor. BY. R2/M9.11.26. BETTER MEP. AT ALL SPEEDS UP TO 3000 RPM. X.8771 AND 4 1/4 COMPRESSION RATIO. X.634 X.8005 This cannot be increased because of detonations and… | ||
| scan0052 | Internal memorandum detailing a proposed front axle control system for the Phantom model, using the spring and shock damper as control arms. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X8005 DA3/M4.12.26. FRONT AXLE CONTROL. X.8005 X.8235. X.8420 X.8230 X.8430 We send herewith N.schs. 2293/4 shewing the proposed front axle control, using the spring as… | ||
| scan0053 | Modifications to the Phantom Front Axle Control and engine torque dampers. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X8005 DA2/M9.12.26. PHANTOM FRONT AXLE CONTROL. X.8420 X.8005 Herewith we send N.sch.2295 giving you the inform- ation promised with reference to the engine torque… | ||
| scan0054 | Location and potential issues with the 40/50 HP torque arm and hydraulic damper. | ||
| View original record | To DA. from Hs/Rm. c. to EY. c. to EY/HEB. [Handwritten]: X8005 Hs/Rm7/LG13.12.26. 40/50 HP. TORQUE ARM LOCATION. [Handwritten]: X8005 / X7005 With reference to the position of the hydraulic damper to… | ||
| scan0055 | Blueprint showing the location of the 40/50 Torque Arm. | ||
| View original record | 40/50 TORQUE ARM LOCATION. 10/12/26 VERTICAL TOP OF FRAME PATH OF PRESENT SHOCK ABSORBER ARM APPROX ACTUAL PATH OF TORQUE ARM BALL JOINT CENTRE BEST CENTRE FOR SHOCK DAMPER SPINDLE TO PREVENT… | ||
| scan0056 | The 10-EX engine suspension, detailing the objective of a 4-point support system to test frame rigidity and its effect on steering. | ||
| View original record | To RHC. from Hs/Rm. X8005 Hs/Rm3/LG25.10.27 10-EX - ENGINE SUSPENSION. X8380 The whole object of supporting the engine at 4 points is to ascertain what effect the increased rigidity imparted to the… | ||
| scan0057 | The examination and testing of Mr. E. Feuerheerd's pump. | ||
| View original record | 48005 To Py. from Hs. Hs2/LG3.11.27. x 9005 RE. Mr. E. Feuerheerd's Pump. We have examined these pumps and consider they are of sufficient interest for us to carry out some tests with it. We should… | ||
| scan0058 | Recommendation for an engine suspension scheme to improve smoothness and reduce vibrations. | ||
| View original record | Hs2/LGS.11.27. X8005 To R. From Hs. c. to BJ. WoR. c. to E. DA. c. to BY. ENGINE SUSPENSION. Y634 We recommend that a proper scheme is got out for supporting the engine in the manner suggested in the… | ||
| scan0059 | Test on a four-point engine suspension system to reduce vibration. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. Da. c. to EY. ENGINE SUSPENSION. In view of the fact that we understood you have been contemplating a four point engine suspension with a vibration absorbing… | ||
| scan0060 | Blueprint detailing the rear engine mounting for the 10EX model, featuring a Hardy rubber-fabric coupling. | ||
| View original record | [ "HARDY RUBBER-FABRIC COUPLING", "REAR ENGINE MOUNTING", "10.E.X." ], | ||
| scan0061 | The engine suspension design for the EAC.10 Sports Phantom. | ||
| View original record | BY. from E. c. to BJ. Hs. X8005 E1/M16.11.27. EAC.10 SPORTS PHANTOM. ENGINE SUSPENSION. X. 8005 X. 8000 We send herewith drg. LeC. 2485 shewing the above. The engine is suspended both fore and aft on… | ||
| scan0062 | New rubber rear engine suspension system for the EAC.14. | ||
| View original record | BY. from E. c. to BJ. Hs. X. 8005 E2/M22.11.27. EAC.14 ENGINE SUSPENSION AT REAR. We send herewith LeC.2487 for applying the new system of rubber suspension to EAC.14. We propose to retain the front… | ||
| scan0063 | Letter to Mr. Dodd concerning weak engine mounting brackets and the dispatch of stronger replacements. | ||
| View original record | X805X 8005 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby. Hs2/LG16.12.27. X8992 Hotel Octobon, Le Canadel, Par le Lavandou, Var, France. Mr. Dodd from Hs. I hope that you had an enjoyable run down. We… | ||
| scan0064 | Sending a rubber block to Messrs. Dunlop for reproduction as car engine mountings. | ||
| View original record | To BP. from Hs/Rm. c. to Mt. (Stores). X8005 Hs/Rm3/LG21.12.27. We are sending to the Stores for despatch to Messrs. Dunlop, Fort Dunlop, Erdington, Birmingham - "For the attention of Mr. Paull" :- 1… | ||
| scan0065 | Letter to the Dunlop Rubber Co. requesting the reproduction of a rubber block. | ||
| View original record | X8005 Hs/Rn2/LG. Expl: Dept: 21st. Dec. 1927. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. We are sending to you under separate cover… | ||
| scan0066 | Letter to The Dunlop Rubber Co. specifying the load requirements for a rubber mounting block. | ||
| View original record | X8005 Expl: Dept: Hs/Rm3/LG. 30th. Dec. 1927. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Bond. We thank you for your letter re. the rubber… | ||
| scan0067 | Letter to The Dunlop Rubber Co. regarding rubber block samples and a request for more for experimental purposes. | ||
| View original record | Expl: Dept: 48005 Hs/Rm2/LG. 11th. Jan. 1928. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Bond. We thank you for your letter of the 10th.… | ||
| scan0068 | Official order be placed with Messrs. Dunlops for rubber pads for engine mountings. | ||
| View original record | To Roy. from Hs/Rm. X8553 Hs/Rm3/LGl1.1.28 We have been endeavouring to induce Messrs. Dunlops to make us the rubber pads required for the engine mounting, as they have had remarkably wide experience… | ||
| scan0069 | Requesting the preparation of replacement steel strips for a rubber engine mounting. | ||
| View original record | X8005 To RHC. from Hs/Rn. Hs/Rnl/LG11.1.28. RUBBER ENGINE MOUNTING. With a view to the possibility of further failure on the steel strips of the rubber engine mounting, will you please prepare a… | ||
| scan0070 | Torque reaction issues and experimental testing on a sports car with different engine mounting configurations. | ||
| View original record | x8005 To DA. from Hs/Rm. Hs/Rm1/LG24.1.28. TORQUE REACTION. 634 We have been running the sports car with the rubber mounting at the rear and solid mounting in front. The result was not the same as… | ||
| scan0071 | Engine mounting test for torque reaction and the resulting vibrations. | ||
| View original record | X8005 Hs/Rm/LG24.1.28. TORQUE REACTION. X 634 Front of the engine 2 point ridig. Rear of the engine mounted on the most flexible of the rubbers cut to length 1.100", the top rubbers having .100 less… | ||
| scan0072 | Graph detailing the load versus deflection characteristics for a torque reaction fixed front mounting. | ||
| View original record | TORQUE REACTION FIXED MOUNTING AT THE FRONT TOP RUBBER BLOCK SET UP TO .070 DEFLN APPROX WORKING RATING 1000 LBS/1" BOTTOM RUBBER BLOCK SET UP TO .170 DEFLN APPROX WORKING RATING 2500 LBS/1" RATING OF… | ||
| scan0073 | Torque reaction and vibration testing after fitting a rubber block to the dash. | ||
| View original record | X8005 Hs/Rm/LG25.1.28. X8005 TORQUE REACTION. X8430 X631 Condition of car as in Hs/Rml/LG24.1.28. Rubber block fitted to dash and torque taken through this, slight improvement noticeable but not very… | ||
| scan0074 | Difficulties with torque reaction in a sports car and the effects of different engine setups. | ||
| View original record | To R. from Hs/Rm. c.c. to BJ. WOP. c.c. to E. DA. c.c. to BY. OY. 48005 Hs/Rml/LG30.1.28. TORQUE REACTION. The most noticeable difficulty that we have encountered on the sports car is that of torque… | ||
| scan0075 | Damping and vibration issues related to the Continental Phantom. | ||
| View original record | contd :- -2- (d) Damping. We have tried various types of damping. The present torque reaction dampers are definitely of assistance. The amount of damping we can use, however, is very small or the… | ||
| scan0076 | Recommending improved engine mounting plates and rubbers for the EAC.14 chassis following successful testing. | ||
| View original record | X8005 To BY. from Hs/Rm. c. to E? Hs/Rm3/LG31.1.28. RUBBER ENGINE MOUNTING. X8005 We broke the plates on the rubber engine mounting in under 10 hrs. running on the bump. We replaced them by two 19… | ||
| scan0077 | Damping scheme for engine torque vibrations, referencing a sketch. | ||
| View original record | Hs. from DA/Hdy. X 8005 DA/Hdy1/M2.3.28. ENGINE TORQUE VIBRATIONS. X. 8005 X. 634 I give below a sketch of the damping scheme referred to in R3/M19.2.28., in order that you may know what is intended,… | ||
| scan0078 | Query on the feasibility of a damper design combining dry friction with lubrication for its diametral fit. | ||
| View original record | +8005 E. Hs. from R. c. to BJ. Wor. BY. R5/M5.3.28. CAR ENGINES. X.8005 X.7005 X.634 Would it be possible to have the damper with dry friction, and yet well lubricated in its diametral fit - i.e. like… | ||
| scan0079 | The implementation of a new rubber engine suspension for the Phantom Chassis F-2 and G-2 series. | ||
| View original record | X8005 BY/Cgh11/K. 4. 4. 28. [STAMPED: APR 5 1928] [DISTRIBUTION LIST - ALL STRUCK THROUGH] BY/Gen. G. BY/WEB C. Hs. O. ROY C. REGT. PHANTOM CHASSIS ENGINE SUSPENSION. With reference to the new rubber… | ||
| scan0080 | Scheme for a flexible engine mounting on the 10-EX model to prevent the engine from dropping. | ||
| View original record | To RHC. from Hs/Rn. +8005 Hs/Rm2/LG11.6.28. x7005 Herewith scheme to enable us to use a very flexible engine mounting on 10-EX and yet prevent the engine dropping. Also the same scheme applies to… | ||
| scan0081 | Specifications and quality control notes for the Phantom's rubber engine mounting. | ||
| View original record | To Mx: from Hs/Rn. To Sft. " c.c to BY. c.c to WOR. X8005 RUBBER ENGINE MOUNTING - PHANTOM. X8005 X7005 With reference to the production of this feature. The general arrangement drg. F.78307 shews the… | ||
| scan0082 | Internal memorandum addressing production issues with rubber consistency and altering deflection test parameters. | ||
| View original record | To: [REDACTED] C.C. to D.I. C.C. to No.1. X8005 Hs/Rm3/LG7.9.28. With reference to the trouble you are having with rubbers of varying consistency on production. Will you please arrange that the test… | ||
| scan0083 | The length tolerances for engine rubber mounting rubbers. | ||
| View original record | To BY/HEB. from Hs/Rm. x8005 (handwritten) Hs/Rml/LG10.9.28. ENGINE RUBBER MOUNTING RUBBERS. xS005 (handwritten and crossed out) XS005 (handwritten) We understand that there is no limit on the diabolo… | ||
| scan0084 | Technical note regarding the correct reamed fit for bolts on a rubber engine mounting to prevent issues from vibration. | ||
| View original record | BY. from Hs/Rn. 48005 Hs/Rn5/LG18.9.28. RUBBER ENGINE MOUNTING. Experience has shewn that the bolts K.332 and F.78402 holding the top and bottom portions of the rubber engine foot together must be… | ||
| scan0085 | The return of two tested rubber parts for a 40/50 HP car to Dunlop for inspection. | ||
| View original record | X8005. To BP. from Hs/Rn. c. to Mt. Stores. Hs/Rn5/LG20.9.28. We are sending into the Stores for despatch to Messrs. Dunlop, Fort Dunlop, Erdington, Birmingham - For the attention of W. Bond Esq. :- 2… | ||
| scan0086 | Letter to Dunlop Rubber Co. Ltd. regarding issues with rubber engine mountings for the 40/50 HP car. | ||
| View original record | Y8005 Expl: Dept: Ha/Rm3/LG. 20th. Sept. 1928. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of W.Bond Esq. RUBBER ENGINE MOUNTING. You will… | ||
| scan0087 | Issues from a bump test, requesting replacement engine feet and a modified front axle for an endurance test. | ||
| View original record | To RHC. from Hs/Rm. x8005 Hs/Rn2/LG21.9.28. BUMP TEST. X8005 x7420 [text X8005 and x7420 are handwritten and struck through] The engine feet on the bump are moving excessively. We have also broken two… | ||
| scan0088 | Letter from Dunlop Rubber Co. Ltd. to Mr. Hives at Rolls-Royce, requesting details on the usage conditions for two rubber buffers that were returned for inspection. | ||
| View original record | X8005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM," TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES EXTENSION No. YOUR REF: OUR REF: AGP.LW.4.219 FORT DUNLOP ERDINGTON… | ||
| scan0089 | Letter to Dunlop Rubber Co. Ltd. proposing a meeting to discuss tyres, engine mounts, and aero engine cylinder joints. | ||
| View original record | 48005 ExpL: Dept: Hs/Rml/LG. 22nd. Sept. 1928. Messrs. The Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. X3494 X5820 Dear Sirs, For the attention of Mr. Paull. Development Dept. I… | ||
| scan0090 | Visit to Dunlop Rubber Co. regarding new 'Fort' and 'Super' tyre models. | ||
| View original record | X8005 To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to SG. Hs/Rm3/LG25.9.28. X4050 X5820 X2446 X7820 X8005 DUNLOP RUBBER CO. We visited the Dunlop Rubber Co. on the 24th. inst. We… | ||
| scan0091 | Report discussing tyre shimmy, with a table of Dunlop tyre figures, and notes on rubber engine feet and rubber cylinder joints. | ||
| View original record | contd :- -2- give us greater immunity from shimmy than the standard tyre on the 40/50. If so, they might help us in getting a good front end ride. It will be recollected that the 6" tyre was… | ||
| scan0092 | Letter from Dunlop Rubber Co. Ltd. discussing the properties and specifications for rubber engine mountings. | ||
| View original record | X8005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM". TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES EXTENSION No. YOUR REF: OUR REF: Technical Director's Office. FORT… | ||
| scan0093 | Letter to Dunlop Rubber Co. requesting the production of sample rubber blocks with modified specifications for testing. | ||
| View original record | x8005 Expl: Dept: Hs/Rn4/LG. 3rd. Oct. 1928. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of W. Bond Esq. With reference to your letter of the… | ||
| scan0094 | Issues with 20 HP valve inlets sticking and an analysis of Phantom power curves. | ||
| View original record | To E. from Hs/Rm. X8005 Hs/Rm8/LG17.10.28. With reference to our telephone conversation of yesterday. Reports on most of the points will be coming through, but briefly the information you asked for is… | ||
| scan0095 | Engine experiments concerning compression ratio, piston rings, and torque reaction. | ||
| View original record | contd :- -2- not too well with the Claudel. The compression ratio could probably be further increased without torque reaction troubles because the 116° camshaft drops the MEP. slightly at the lower… | ||
| scan0096 | Continued memo discussing the ratings of two couplings and details of a Chrysler spring drive. | ||
| View original record | contd :- -3- Attached are ratings of the two couplings we are trying and details of the Chrysler spring drive which you will see are almost a year old. We cannot help feeling there is something in it,… | ||
| scan0097 | Graph comparing Torque versus Angular Deflection for Standard Hardy and Alpe couplings. | ||
| View original record | TORQUE LBS/FT 700 600 500 400 300 200 100 STANDARD HARDY COUPLING APPROX. MAX ENGINE TORQUE ALPE COUPLING ANGULAR DEFLECTION DEGREES 1° 2° 3° 4° 5° 6° 7° 8° 9° 10° | ||
| scan0098 | Letter from Dunlop Rubber Co. regarding rubber engine mountings and cylinder joints. | ||
| View original record | X 8005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM". TELEPHONE: BIRMINGHAM CENTRAL 4108 R.B.E. 25 LINES EXTENSION No. YOUR REF. OUR REF. WB.LW.5.910 FORT DUNLOP ERDINGTON… | ||
| scan0099 | Hand-drawn sketch of a mechanical component with annotations and measurements on the reverse of a typed memo. | ||
| View original record | Handwritten Text: 20 Std, Andrea 4, Eagle, F, R.P.D., 10, 11, 12, 13, 14, 15, 25. Typed Text (upside down and partial): ...COMING FROM, ...ANDIMON..., ...12th Oct. '28. (date), ...roll-you...,… | ||
| scan0100 | Letter to Dunlop Ltd. concerning the progress of rubber blocks. | ||
| View original record | 48005 Hs/Rml4/LG. Expl: Dept; 22nd. Oct. 1928. Messrs. Dunlop,Ltd. , Erdington, Fort Dunlop, Birmingham. Dear Sirs, For the attention of W.Bond Esq., With reference to your letter ref. WB.LW.5.910 of… | ||
| scan0101 | Measurement of drive flexibility and its effect on couplings and flywheel inertia. | ||
| View original record | E. from Hs/Rn. 48005 Hs/Rn3/LG25.10.28. 48300 Thank you for your E1/M24.10.28. We have been measuring the flexibility of the drive from the clutch backwards and find that it twists a number of degrees… | ||
| scan0102 | Recommendation to fit rubber engine mountings to car 24-CL to eliminate roughness between 40-50 mph. | ||
| View original record | To EF. from Hs/Rn. c. to Mx. CMB. c. to. PN. WGV.✓ X8005 X4117 Hs/Rnl/LG:31.10.28. As a result of the tests we carried out on 24-CL we recommend the rubber engine mounting should be fitted to this… | ||
| scan0103 | Follow-up regarding the fitment of a rubber engine mounting modification to address a high-speed roughness complaint. | ||
| View original record | X8005 PN.2/WT1.11.28. S/W. Hs...from PN. Copy to Wor. Sg CWB. 2-GL. In reply to your Ms/RM1/LG31.10.28 it is hoped that whilst you have recommended the rubber engine mounting for this chassis you have… | ||
| scan0104 | Visit to the Dunlop Works to discuss the non-skid life of tyres following customer complaints about skidding. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to BY. +8005 Hs/Rm6/LG2.11.28. TYRES. X4050 We visited the Dunlop Works on Tues. the 30th.ult. We discussed the effective non-skid life of the tyre… | ||
| scan0105 | Continuation page of a report discussing experimental rubber mixings to increase the load capacity for the 40/50 model. | ||
| View original record | contd :- -2- a permanent set; whilst they wish that we could increase the quantity of rubber to take the load on the 40/50, they believe from their tests that we shall get better results with the… | ||
| scan0106 | Letter to The Dunlop Rubber Co. concerning details of a rubber cylinder joint and a request for harder rubber blocks for engine mountings. | ||
| View original record | XS005 Expl: Dept: HS/Rnl/LG. 6th. Nov. 1928. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. XS494 Dear Sirs, For the attention of Mt. Jones. With reference to our conversation of… | ||
| scan0107 | Extract detailing the thermal expansion and failure analysis of a rubber cylinder joint. | ||
| View original record | Extract from experimental report :- RUBBER CYLINDER JOINT. Expansion of cyl. block 25 X 10-6 approx. or .000026 " " rubber ring 4.7 X 10-5 " " .000047 Therefore the excess expansion of the rubber ring… | ||
| scan0108 | Cross-section drawing of an FXI Cylinder Joint with dimensions. | ||
| View original record | .050R .300 .4375 R 5.4245 5.200 DIA BOTTOM OF GROOVE F XI CYL JOINT | ||
| scan0109 | Design drawing of an F.XI rubber cylinder joint with dimensions and thermal expansion calculations. | ||
| View original record | F.XI RUBBER CYL JOINT .0065 RUBBER RING COMPRESSION .020 .150 VOL SPACE A.A. APPROX .045 CU. INS VOL OF PROTRUDING RUBBER .033 CU. INS .4375 RAD 5.200 DIA AS CYL BLOCK HEATS UP CLEARANCE BETWEEN IT… | ||
| scan0110 | Letter from Dunlop Rubber Co. regarding rubber compound samples and a cylinder joint ring. | ||
| View original record | X5005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS.PHONE.BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: OUR REF: FBJ/FHC/2. Phys. Lab. Telephone Ext. 339. FORT DUNLOP… | ||
| scan0111 | Letter from Dunlop Rubber Co. Ltd. following up on sample buffer blocks and requesting compression test details. | ||
| View original record | +5005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS,PHONE,BIRMINGHAM." TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: OUR REF: FBJ/FHC/1. Phys. Lab. Telephone Ext. 339. FORT… | ||
| scan0112 | Experiments with rubber engine mountings for the Phantom, exploring the possibility of avoiding drilling the rubbers. | ||
| View original record | To BY. from Hs/Rm. X5005 c. to MX. Wor. Hs/Rm6/LG4.12. 28. RUBBER ENGINE MOUNTING. F.78146. X5005 (X7005 strikethrough) We have been carrying out experiments with the rubber engine mounting on the… | ||
| scan0113 | Specifying deflection under load for rubber components ordered from Messrs. Dunlop and discussing material mix experiments. | ||
| View original record | contd :- -2- the next batch of rubbers ordered from Messrs. Dunlop should be specified to give .150 deflection ± .007 under 750 lbs. load, the mix to be as at present. We think that they will be able… | ||
| scan0114 | Letter to Dunlop Rubber Co. regarding testing and specifications for sample rubber blocks for an engine foot. | ||
| View original record | X8005 Expl: Dept: Hs/Rm5/LG. 4th. Dec. 1928. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Jones. X5005 With reference to your letter of the… | ||
| scan0115 | Letter discussing specifications and requesting new orders for rubber components. | ||
| View original record | contd :- -2- a set of rubbers with approximately this rating. In addition to these slightly stiffer rubbers, we require some very hard rubbers. A figure we suggest is 1.050" long to give a load of 900… | ||
| scan0116 | Graph showing deflection versus load for various types of engine foot rubbers. | ||
| View original record | ENGINE FOOT RUBBERS. DEFLN 1/100 INS LOAD LBS. X. 20 H.P. BLOCK 1.250 LONG A. LAST BATCH 1 DOZ EXP RUBBERS 1.125" LONG B. STANDARD. 40/50 1.150 LONG C. REQUIRED RATING FOR RUBBERS 1.125 LONG D. ULTRA… | ||
| scan0117 | Order for three types of engine rubbers from Messrs. Dunlop. | ||
| View original record | To ROY/Ms. from Hs/Rm. X5005 (handwritten, crossed out) Hs/Rm2/LG5.12.28. X5005 (handwritten) Will you please order from Messrs. Dunlop :- 2 doz. 40/50 engine rubbers 1.125" long giving 750 lbs. load… | ||
| scan0118 | New specifications, testing issues, and quality control procedures for rubber engine mountings. | ||
| View original record | Hs/Rm. C. Mx. C. Wor. c. Mr. Cox 48005 BY15/G.7.12.28. RUBBER ENGINE MOUNTING. We are arranging to instruct the rubbers in future to the scheme outlined in Hs/RmS/LG.4.12.28. i.e. we shall measure the… | ||
| scan0119 | Concluding on the inconsistency and poor quality of rubber mixes from Mr. Jones of the Dunlop Co. | ||
| View original record | - 2 - In conclusion, we would point out that there is no consistency in the mixes from which the rubbers are made. Apparently Mr. Jones of the Dunlop Co. considers he can produce a mix to give certain… | ||
| scan0120 | Depot sheet describing issues with fabric couplings causing excessive torque re-action and roughness on pick-up. | ||
| View original record | To Hm. from Hs/Rm. DEPOT SHEET. FABRIC COUPLING. Our experience has been, when the fabric coupling is badly distorted or on the point of failure, torque re-action is XXX accentuated and the whole car… | ||
| scan0121 | Correspondence from Dunlop about the hardness of experimental rubber blocks, compound No. 4 and No. 5. | ||
| View original record | DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: OUR REF: FBJ/FHC/7. Phys. Lab. Telephone Ext. 339. FORT DUNLOP… | ||
| scan0122 | Unsatisfactory performance of rubber engine feet bolts and proposing the use of tight-fitting bolts as a solution. | ||
| View original record | To E. from Hs/Rm. +8005 Hs/Rm3/LGL2.12.28. c. to BY. c. to Wor. RUBBER ENGINE FEET. +7005 The bolts on these engine feet indicated in the attached sketch have never been very satisfactory. Their… | ||
| scan0123 | Blueprint showing section and elevation views of a mechanical component. | ||
| View original record | F78146 B | ||
| scan0124 | Letter from Dunlop Rubber Co. Ltd. following up on supplying rubber engine feet and arranging a meeting in Derby. | ||
| View original record | X8005 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS,PHONE,BIRMINGHAM." TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: OUR REF: FBJ/FHC/5. Phys.Lab. Telephone Ext. FORT DUNLOP… | ||
| scan0125 | Letter to Dunlop Rubber Co. regarding the specification for engine foot rubbers, requesting harder samples. | ||
| View original record | c. to BY. X8005 Expl: Dept: Hs/Rm6/LG. 22nd. Dec. 1928. Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, ENGINE FOOT RUBBERS. With reference to FBJ/LEM/FHC4. we think the… | ||
| scan0126 | Letter to Dunlop Rubber Co. Ltd. regarding the weakness of engine foot rubber samples and requesting a new mix. | ||
| View original record | HS/ c. Mr. Rowbotham. +8005 31st. December 1928. BY2/G. Messrs. Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, ENGINE FOOT RUBBERS. Referring to your letter of the 21st inst.… | ||
| scan0127 | Letter from Dunlop Rubber Co. Ltd. regarding the development, testing, and supply of new Engine Foot Rubber blocks. | ||
| View original record | [Handwritten top left] Hs/Rm [Handwritten top right] The new rubber would appear to be an advance & consistent. [Handwritten center] we are checking up the samples [Handwritten far right] By DUNLOP… | ||
| scan0128 | The testing and sourcing of rubber engine feet from The Dunlop Co. | ||
| View original record | To BY. from Hs/Rm. x8005 Hs/Rm3/LG3.1.29. RUBBER ENGINE FEET. x7005 We have now received half a dozen sample rubbers from The Dunlop Co. which have precisely the rating we are after, i.e: they give a… | ||
| scan0129 | Rating test graph for F.78114 Engine Foot Rubbers, plotting load in pounds against deflection in inches. | ||
| View original record | RATING TEST. F.78114 Engine Foot Rubbers. Supplied by Messrs. Dunlop 2.1.29. LOAD LBS. 1000 800 600 400 200 DEFLECTION INS. .05 .10 .15 .20 | ||
| scan0130 | Rating test results for engine foot rubbers supplied by Dunlops, measuring deflection under load. | ||
| View original record | 3.1.29. F.78114 ENGINE FOOT RUBBERS ) RATING TEST. Supplied by Dunlops 2.1.29. | | DEFLECTION INS. | | | | | | |---:|:---:|:---:|:---:|:---:|:---:|:---:| | Load lbs. | 1Z | 2Z | 3Z | 4Z | 5Z | 6Z | |… | ||
| scan0131 | Letter to The Dunlop Rubber Co. discussing the consistency and specifications of rubber compounds. | ||
| View original record | X8005 c. to BY. Hs/Rm2/LG. 3rd. Jan. 1929. Expl: Dept: Messrs. The Dunlop Rubber Co. Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of F.B.Jones Esq. With reference to FBJ/FHC/6 of… | ||
| scan0132 | Test report on Phantom engine supporting rubbers, mix no. 6. | ||
| View original record | Hs/Rm. X8005 BY7/G.7.1.29. PHANTOM - ENGINE SUPPORTING RUBBERS. MIX NO. 6. The six rubbers to compress .150 under 750 lbs. have been :- a/- Corrected to overall length. b/- tested. c/- Checked for… | ||
| scan0133 | Requesting a Phantom Trials car to act as a standard for frame jellying and booming tests. | ||
| View original record | To CWB. from Hs. c. to Sg. 78005 x7005 We telephoned you this afternoon suggesting that you send to Derby for a few days a Phantom Trials car fitted with a covered body. We have been working on the… | ||
| scan0134 | The design and characteristics of the S.S. suspension system. | ||
| View original record | To Hm. from Hs/Rm. For Depot Sheet. x8005 Hs/Rm.2/MJ.18.9.29. x7005 x8005 S.S. SUSPENSION. ---------------- The S.S. springs have slightly more deflection front and rear than the Phantom. Inaddition,… | ||
| scan0135 | Shock absorber adjustments to improve riding qualities and overcome issues of insufficient firmness at high speeds. | ||
| View original record | -2- suspension, the shock absorbers have been arranged so that both loads can be adjusted without removing the damper from the car. A separate sheet is being circulated which indicates how this may be… | ||
| scan0136 | Arrangements for a trial of 'American spring and shock absorber modifications' on car 43-KR. | ||
| View original record | To Hs. from Sg. re 43-KR. Sg7/E4.10.29 As arranged with you in the train yesterday morning, I have instructed Kennett to come straight up to Derby with 43-KR as soon as he has taken me to Victoria… | ||
| scan0137 | Testing and potential delay of springing work on the 43-KR car. | ||
| View original record | To Sg. from Hs. C. to Wor. Hs3/AD7.10.29. SPRINGING THE 43-KR CAR. This car arrived in Derby Friday afternoon and has been tried by us. Unfortunately both Mr.Olley and Mr.Southern had left Derby for… | ||
| scan0138 | Arrangement of an experimental car, referencing chassis 43-KR. | ||
| View original record | S/W To Hs. from JS. re Springing - 43-KR. JS1/E9.10.29 Referring to your Hs3/AD7.10.29 Sg. is in Paris but I have consulted C. and we are arranging for Sg. to have the use of another car here until… | ||
| scan0139 | The springing on car 43-KR and arranging a car trial for Messrs. Olley and Southern. | ||
| View original record | Hs To Hs. from Sg. re Springing - 43-KR. Copy to Wor. Thanks for Hs3/AD7.10.29. I understand that Messrs. Olley and Southern returned yesterday and I gathered that they would be coming straight up to… | ||
| scan0140 | From Sg. to Hs. regarding travel arrangements for a person named Kennett. | ||
| View original record | S/W To Hs. from Sg. re 43-KR. Sg22/E15.10.29 Referring to your telephone message this afternoon, I cannot arrange to send for my|||car to-morrow, Wednesday, as I need Kennett here, but I will send him… | ||
| scan0141 | Improvements to the springing and ride quality of vehicle 43-KR. | ||
| View original record | Hs To Hs. from Sg. re Springing of 43-KR. Sg11/E21.10.29 Copy to C. I thought you would be interested to see the attached copy of Mr.Harcombe's report. As mentioned to you on Friday I immediately… | ||
| scan0142 | Test report on the springing and shock absorber performance of Mr. Sidgreaves' car 43-KR, before and after alterations. | ||
| View original record | S.G. copy to C. " " H. RE: MR. SIDGREAVES' CAR 43-KR. As arranged, I tried the above car on the 4th inst. with a view to obtaining the characteristics of the springing, before W. made various… | ||
| scan0143 | Road test report on the car's riding quality and springing performance. | ||
| View original record | -2- road. At higher speeds of up to 70, the riding appeared definite ly inferior to the previous test; the car feeling rather unstable both when seated at the back and when driving - but this… | ||
| scan0144 | Alteration to shock absorbers to resolve a 'dithering' issue at low speeds. | ||
| View original record | S/W...... c. to Hs. The SPRINGING With further reference to C9/C17.10.29, we have now tried Sg's car with the alteration in the shock absorbers and there appears to be no question about this having… | ||
| scan0145 | Test results and modifications to the springing of the 43-KR car. | ||
| View original record | X To Sg. from Hs. c. C. c. Wor. Hs3/AD22.10.29. SPRINGING OF 43-KR CAR. The results of our tests generally agree with the report of Mr. Harcombes. Before the car left Derby we got Hm. to try it, and… | ||
| scan0146 | Springing alterations for chassis 43-KR, detailing customer complaints and ongoing experiments to fix issues with pitching and dithering. | ||
| View original record | W/S to C. C. to Hs. x8005. Hs Hm7/KW25.10.29. X4117 X8005. Re Springing. Chassis No. 43-KR Reference: C10/C22.10.29. We agree that the alterations which we have carried out by Experimental Department… | ||
| scan0147 | Importance of frequent lubrication for leaf springs to resolve customer complaints about ride quality. | ||
| View original record | -2- Hm7/KW25.10.29. A very important point is the frequent lubrication of the springs in order that the felt pads are kept well saturated with thin oil, and this should be carried out at frequent… | ||
| scan0148 | Tests and solutions for suspension complaints on the Phantom I model. | ||
| View original record | X8005 To R. from Hs/Rm. c. Sg. Wor. c. Da. E. c. By. Hm. Hs/RM1/MJ10.12.29. PHANTOM I SUSPENSION. X8770 X8005 X8840 X235 X8410 In conjunction with the Repair Dept. we are carrying out tests… | ||
| scan0149 | Technical report discussing vehicle ride quality, pitching, and suspension components like springs and shock absorbers. | ||
| View original record | -2- pitching at the higher speeds is introduced. The light fabric body however, is most difficult to deal with as it has a tendency to pitch over the whole running range. Such cars also ride harshly… | ||
| scan0150 | Suspension improvements for Phantom I and II cars, focusing on front springs and drilled valves. | ||
| View original record | -3- Hs/Rml/MJ10.12.29 contd. appears to be absolutely essential to get the full benfit from these weak springs. For light fabric bodied cars which we have so far failed to improve to any great extent,… | ||
| scan0151 | Testing lower-rated springs on the Phantom 1 model to address high-speed pitching complaints. | ||
| View original record | x8005. HS. c. to Wor. c. to C. c. to Da. Hm.11/W31.1.30. SPRINGING COMPLAINTS. Phantom 1. x8410 x8005. We have now had an opportunity of testing the lower rated springs especially made with the object… | ||
| scan0152 | Investigation into 'pitching' issues with Phantom 1 cars and the trial of new front springs to improve ride quality. | ||
| View original record | To R. From Hs/Rn. c.c. to Wor. Sg. c.c. to E. Da. c.c. to Hm.. By. 8005. Hs/Rn.1/WJ.3.2.30. X.8410 X.8005 PHANTOM 1 RIDING. = It will be remembered that, although lubricating and plating the springs… | ||
| scan0153 | Frame distortion tests measuring the effects of engine mountings on torsional stiffness and front end jellying. | ||
| View original record | To R. from Hs/Ltd. c. to SG. Nor. c. to Z. Da. c. to By. X.8380. X.7380. X.457. X.7005. X.8005. FRAME DISTORTION TESTS P.II. F.A.C.VII. AND P.I. We have carried out a series of tests to measure the… | ||
| scan0154 | Test report comparing frame stiffness, damping, and engine mountings to mitigate 'jellying' across various models. | ||
| View original record | (2) The next test was carried out on a P.I. car with solid rear feet and sheet aluminium dashboard Fig.VI. The obvious difference is the increase of damping over P.II. in its stiffest condition which… | ||
| scan0155 | Five graphs illustrating frame deflection and distortion test results for various car configurations and components. | ||
| View original record | Graph 1: Title: 20 EX. FRAME DEFLECTION TESTS Axis Labels: TORQUE LBS/FT, FRAME DEFLECTION ANGLE Legend: STANDARD, REAR ENGINE FEET OUT, STANDARD NO BODY Figure: FIG I Graph 2: Title: 20 EX. FRAME… | ||
| scan0156 | Reproducing connecting rod bearing failure on an EAC test bench engine. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. Expl. No. +8010 REF: Hs6/LG29. 4. 25. S E C R E T. CON. ROD BEARING… | ||
| scan0157 | The use of taper bolts for securing the EAC clutch flywheel. | ||
| View original record | TO BY. FROM AJS. Copy to - Hs. " - Ws. " - Hs/RHC. RE. EAC. CLUTCH We note on arrangement drawing G.73748., that taper bolts are shewn for securing the flywheel, to the crankshaft flange. We do not… | ||
| scan0158 | Inspection of engine bearings, clearance issues, and a proposal for flow testing before dismantling. | ||
| View original record | Wor c. SFT c. Lox c. Hs. X8010 EP13/H13.8.26. re. Engine Bearings. Thanks for yours Wor2/M13.7.26. I shall be very pleased to go into the inspection of the bearings thoroughly on the next few engines… | ||
| scan0159 | Experiments on crankshaft vibrations in the Phantom and 20 HP engines. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X8010 Hs/ACL1/LG20.9.26. PHANTOM AND 20 HP. CRANKSHAFT VIBRATIONS. X684 X5010 We have carried out further experiments in… | ||
| scan0160 | Testing slipper wheels to reduce engine vibrations at different speeds. | ||
| View original record | contd :- -2- The slipper wheels were replaced with a normal damping torque of 315 lbs.ins. which, although smoothing out the lower speed vibrations, seemed to have little or no effect on the one at… | ||
| scan0161 | Report page detailing the analysis of engine vibrations, friction torque, and preliminary test results on the Phantom model. | ||
| View original record | contd :- -3- figures because with the high unit pressures necessary on the slipping surfaces, the friction torque became extremely erratic and was particularly susceptible to changes of temperature… | ||
| scan0162 | Vibration experiments focusing on lower harmonics, critical speed, and the effects of damping friction torque. | ||
| View original record | contd :- -4- (4) Vibrations due to the lower harmonics of the gas pressures are evident under load at about 1580 and 1105 r.p.m. and heavy damping friction intensifies them. (5) The amplitude of the… | ||
| scan0163 | Engine vibration analysis, investigating the effects of damping, piston configuration, and piston weight. | ||
| View original record | contd :- -5- which vibration was then at a max. but less severe than at 3300 RPM. (5) The damping friction used in case (3) (200 to 300 lbs.ins.) seemed too high to effectively damp out the vibrations… | ||
| scan0164 | Crankshaft stiffness, vibration testing, and future plans for the Silver Ghost and Phantom models. | ||
| View original record | contd :- -6- We expected a larger reduction than this and think that perhaps removing the tops of the pistons does not give an accurate com-parison with respect [illegible] to the weight effect… | ||
| scan0165 | Torsional vibration diagrams for the Goshawk III crankshaft with no damper wheels. | ||
| View original record | 1) STANDARD CRANKSHAFT 3100 R.P.M. STD PISTONS WITH HEAD (CYL) REMOVED 3 OSCILS PER REV AMPLITUDE 8 3/4° 2) 12% STIFFER CRANKSHAFT 3370 R.P.M. DIAGM. WITH ENGINE RUNNING UNDER POWER LIGHT LOAD… | ||
| scan0166 | Experiments to determine the torsional deflection and rigidity of a Phantom crankshaft. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to HG. R. c. to DA. BY. c. to OY. X8010 Hs/ACLL/LG23.9.26. X8840 / X634 PHANTOM - CRANKSHAFT VIBRATIONS. In connection with the Phantom crankshaft vibration… | ||
| scan0167 | Calculation of the weight and polar moment of inertia for various engine components. | ||
| View original record | contd :- -2- PART. WEIGHT. lbs. POLAR MOMENT OF INERTIA. (W/g K^2) Crankshaft complete - 75.875 .06738 units. Big end of conn. rod (2.64 lbs. each - total for six) - 15.84 .02579 " Spring drive parts… | ||
| scan0168 | Report page detailing calculations for the critical speed of the Phantom crankshaft compared to the 20 HP model. | ||
| View original record | contd :- -3- Working this out on the lines given in our first report we find that the free period would be 158 oscillations per second or 9480 oscillations per minutes. We know from the 20 HP. results… | ||
| scan0169 | Vibration issues and diagnostics on car model 12-EX. | ||
| View original record | To Hs. from R. c. to BJ. BY. c. to Wor. CWB. c. to PN. +810 R1/M1.10.26. 12-EX - VIBRATION ETC. X.634 X.8010 X.7010 X.7300 With reference to 12-EX which came to WW. on the 29th.ult, this car appeared… | ||
| scan0170 | Issue of the New Phantom crankshaft pinion working loose. | ||
| View original record | Hm. c. BY. c. Hs. c. Wor. X.8010 12-0 EP2/Hl.10.26. re. New Phantom Crankshaft Pinion Working Loose. Some time ago we had trouble during our final acceptance tests of engines failing, due to the… | ||
| scan0171 | Letter to the Air Ministry regarding a report on crankshaft torsional vibration tests on a 40/50 HP engine. | ||
| View original record | x8010 Expl: Dept: Hs/Rm6/LG. 4th. Nov. 1926. x634 Major B. C. Carter, AIR MINISTRY, Adastral House, Kingsway, London W.C.2. Dear Major Carter, We are sending you a report on Crankshaft Torsional… | ||
| scan0172 | Experiments to determine the torsional deflection and polar moments of inertia of Phantom crankshaft components. | ||
| View original record | COPY. PHANTOM - CRANKSHAFT VIBRATIONS. In connection with the Phantom crankshaft vibrations experiments, we have taken a torsional deflection curve of this crankshaft supported in its bearings in the… | ||
| scan0173 | Continued report on the calculation of crankshaft vibration, nodal points, and critical speed. | ||
| View original record | CONTD :- -2- Having determined the stiffness of the shaft and the inertia of the parts, we were able to estimate the fundamental or free period of oscillation of the system, also the position of the… | ||
| scan0174 | Better Mean Effective Pressure for 20 HP and 40/50 HP engines. | ||
| View original record | To E. from H To Hs. c.c. to E.J. Wor. By. X8010 R/H8.11.26. 20 HP. AND 40/50 ENGINES. X.8771 X.634 X.5771 X.8010 X.8060 Better MEP. needed for the above - maximum HP. just under master crankshaft… | ||
| scan0175 | Further tests concerning torsional vibrations on the 20 HP and Phantom engines, focusing on a non-rigidly mounted flywheel. | ||
| View original record | To R. from Hs/ACL. c.c. to EJ. Wor. c.c. to AG. E. c.c. to DA. BY. c.c. to GY. (Handwritten) X8010 Hs/ACL1/LG9.11.26. TORSIONAL VIBRATIONS ON 20 HP, & PHANTOM. (Handwritten) X5010 X8010 X654 Further… | ||
| scan0176 | Analysis of crankshaft vibration, comparing a non-rigid flywheel to a slipper wheel damper system. | ||
| View original record | contd :- -2- resisting motion relative to the crankshaft was varied between 400 and 2000 lbs.ins. and vibration diagrams recorded between these values. Within these limits it was found that the… | ||
| scan0177 | Analysis of crankshaft resonant speeds, flywheel friction effects, and torsional vibrations on the Phantom model. | ||
| View original record | contd :- -3- free on the crankshaft. We have calculated that this assumed higher resonant speed would be at 6580 r.p.m. The system considered being the crankshaft unit without the flywheel and the… | ||
| scan0178 | Continued analysis of engine vibration, comparing crankshaft rigidity and internal damping between the 20 HP and Phantom models. | ||
| View original record | contd :- -4- resonance as indicated by the three crests on the diagram. The same diagram reduced to a flat base is given as a comparison with the 20 HP. and we see that the amplitude is less than with… | ||
| scan0179 | Analysis of engine damper effectiveness, comparing viscous-friction and centrifugal types for managing vibrations. | ||
| View original record | contd :- -5- that the critical amplitude is less than the 20 HP; but the lower vibrations - or harmonics - are correspondingly less severe and on the engine investigated we failed to get a diagram… | ||
| scan0180 | Concluding page of a report on investigations into crankshafts. | ||
| View original record | contd :- -6- crankshafts with the influence of various factors on the same. In both the cases investigated we have found the method to be quite reliable and in close agreement with our practice… | ||
| scan0181 | Diagram of an experimental friction mounting for a flywheel on a 20 HP crankshaft. | ||
| View original record | FLYWHEEL WITH CLUTCH REMOVED BAKELITE WASHERS. CLAMPING BOLTS CRANKSHAFT SLOTS ARE CUT IN FLYWHEEL FOR BOLTS ALLOWING 5° FREE MOVEMENT. RUBBER BUFFERS ARE PLACED IN THE SLOTS TO STOP THRASHING AGAINST… | ||
| scan0182 | Graph comparing torsional vibration amplitudes for the Goshawk and Phantom models at critical speed without external damping. | ||
| View original record | TORSIONAL VIBRATIONS COMPARISON OF VIBRATION AMPLITUDES AT THE CRITICAL SPEED ON PHANTOM & 20 H.P. WITHOUT ANY EXTERNAL DAMPING PLAIN LINE GOSHAWK DOTTED LINE PHANTOM AMPLITUDE OF VIBRATION DEGREES… | ||
| scan0183 | Graph showing curves for the reduction in torsional vibration amplitude with decreased frictional mounting of the flywheel. | ||
| View original record | TORSIONAL VIBRATIONS CURVES SHOWING REDUCTION IN AMLITUDE OF VIBRATIONS WITH DECREASE IN THE FRICTIONAL MOUNTING OF THE FLYWHEEL AMPLITUDE OF VIBRATION DEGREES CRANK ANGLE DEGREES NON-RIGID FLYWHEEL… | ||
| scan0184 | Polar diagrams comparing the crankshaft oscillations of 20-HP and Phantom models at the speed of resonance. | ||
| View original record | 20.H.P. VIBRATION PHANTOM VIBRATION. POLAR DIAGRAMS OF 20-H.P. & PHANTOM CRANKSHAFT OSCILLATIONS AT THE SPEED OF RESONANCE. ael/. | ||
| scan0185 | Letter to Mr. Robotham regarding a report of tests taken on a 40/50 HP engine. | ||
| View original record | Your Reference:- Hs/Rm6/LG. X8010/ 9th November, 1926. +634 Dear Mr. Robotham, Many thanks for your letter of the 4th instant enclosing a report of tests taken on your 40/50 H.P. engine. I cannot at… | ||
| scan0186 | Cover note for a report on Torsional Vibration. | ||
| View original record | X6324 (struck through) X8010 To E. from Hs. Hsl/T11.11.26. X6324 Herewith report on Torsional Vibration which we promised you. Hs. | ||
| scan0187 | Short memo requesting information on crankshaft vibrations from General Motors. | ||
| View original record | To CWB. from Hs. /8010 Hsl/LG24.11.26. CRANKSHAFT VIBRATIONS. H634 Attached herewith is the sort of information we would like from General Motors. We should be obliged if you could obtain this for us.… | ||
| scan0188 | Letter to General Motors Ltd. requesting information about their crankshaft torsional vibration damper. | ||
| View original record | C O P Y. 22.11.26. Letter to General Motors Ltd. :- CRANKSHAFT TORSIONAL VIBRATIONS. We are interested, from a technical point of view, in the torsional vibration damper recently adopted by you on… | ||
| scan0189 | Letter asking questions about the theory of engine vibration and damper action. | ||
| View original record | contd :- -2- Assuming the main critical vibration without the damper to occur within the speed range of the engine, does the damper effectively eliminate the 'master' vibration, if so, is this… | ||
| scan0190 | Crankshaft torsional vibrations and the harmonic balancer used by General Motors. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to BY. 48010 Hs4/LG14.1.27. CRANKSHAFT TORSIONAL VIBRATIONS. Xbort We attach herewith some interesting letters from The General Motors Corporation… | ||
| scan0191 | Letter from General Motors Corporation discussing harmonic balancers and engine design. | ||
| View original record | C O P Y. GENERAL MOTORS CORPORATION, 224 West 57th. Street, NEW YORK. Dec. 10th. 1926. Commander W. Briggs, Rolls-Royce Ltd., 14-15 Conduit Street. Dear Commander Briggs, I received yours of Nov.… | ||
| scan0192 | The concluding page of a letter discussing engine damping devices and a comment on London fog. | ||
| View original record | contd :- -2- damping devices or attempt to get the same power by driving a smaller engine at a somewhat higher speed, requiring some sort of damping to make the operation satisfactory. I did not know… | ||
| scan0193 | Letter from General Motors regarding the harmonic balancer and torsional vibration of crankshafts. | ||
| View original record | C O P Y. OAKLAND MOTOR CAR DIVISION, General Motors Corporation, Pontiac, Michigan. Dec. 15th. 1926. Commander W. Briggs, Rolls-Royce Ltd., Conduit Street. Dear Sir, I have a letter from Mr. Crane… | ||
| scan0194 | Technical report on the detailed operation and phase relations of a shaft and harmonic balancer. | ||
| View original record | contd :- -2- movement of the shaft. In practice this works out best when the rate of oscillation of the balancer alone is approximately two-thirds that of the shaft. These figures vary of course for… | ||
| scan0195 | Letter discussing the effects of a shaft balancer on disturbance periods and vibration frequencies. | ||
| View original record | contd :- -3- period You asked whether the balancer might not split, the forcing one disturbance higher and another lower than the normal period of the shaft. I observed this effect on some of the… | ||
| scan0196 | Letter to the Royal Aeronautical Society enclosing remarks on the Carter paper for publication in their Journal. | ||
| View original record | X8010 Expl: Dept: X634 28th. Jan. 1927. HS/ACLL/LG. The Hon. Secretary, Royal Aeronautical Society, 7. Albemarle Street, London W.1. Dear Sir, I thank you for your letter of the 8th.inst. Enclosed… | ||
| scan0197 | Technical discussion on the causes and mitigation of crankshaft vibrations in multi-crank engines. | ||
| View original record | CRANKSHAFT VIBRATIONS. My experience has been wholly confined to multi crank engines and have found that critical speeds could be estimated within about 7% on such engines from a knowledge of the… | ||
| scan0198 | Experiments with solid friction dampers to reduce torsional vibration in engines. | ||
| View original record | contd :- -2- Some experiments were made with a solid friction damper consisting of a small flywheel at the front end of a six throw crankshaft and free to slip torsionally against the friction. A… | ||
| scan0199 | Comparative table of stiffness and inertia properties for various engine models. | ||
| View original record | A. B. C. D. E. F. G. H. I. J. K G-1 14,750 31.650* .03895 .794* 1.995* 1.250* 1.33 2.93% .0153 38,900 G-11 16,220 30.975* .0419 .8084* 1.995* 1.250* 1.33 3.15% .01796 41,600 Phantom. 43,500 40.600*… | ||
| scan0200 | Potential solution for sticking crankshaft friction dampers by enclosing the unit in an oil-filled slipper flywheel. | ||
| View original record | To Hs. from E. c. to BJ. BY. x8010 E2/M19.5.27. RE. SLIPPER DRIVES. X.634 X.8010 With reference to the trouble that occurs with crankshaft & friction dampers sticking during periods of rest, this… | ||
| scan0201 | The Phantom lightened crankshaft and G.1. type spring drive. | ||
| View original record | BY. from E. c. to BJ. Hs. X8010 E2/M24.9.27. PHANTOM LIGHTENED CRANKSHAFT AND G.1. TYPE SPRING DRIVE. X. 8010 X. 4222 We send herewith Lec. 2462 shewing the above. Particulars of the driving spring… | ||
| scan0202 | Testing modified Phantom engine components, including the crankshaft and exhaust manifold. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. X8010 PHANTOM. _Handwritten: X8770 X8230_ Next week we shall be testing the modified crankshaft, tubular conn. rods and new slipper wheel in 10-EX… | ||
| scan0203 | High-speed engine vibrations, particularly around the crankshaft's critical speed and the influence of main bearings. | ||
| View original record | To R. from Hs/Rm. c. to BJ. WoR. c. to RG. E. c. to DA. BY. c. to OY. X8010 Hs/Rm2/LG4. 11.27. HIGH SPEED ENGINE VIBRATIONS. X6324 X5010 We have recently, both on the 40/50 HP. and 20 HP. been running… | ||
| scan0204 | Technical analysis of engine crankcase design and its effects on engine periods and behaviour. | ||
| View original record | contd :- -2- We have evidence that racing people do support this view. The latest 1500 c.c. racing engine designed by Thomas and at present being used by Purdy on the track, has a cast iron crankcase.… | ||
| scan0205 | Request to machine a second key-way on a crankshaft for testing due to high stress on the single key-way. | ||
| View original record | X8010 To RHC. from Hs/Rm. Hs/Rm2/LG11.11.27. X634 CRANKSHAFT TESTS. Will you please machine a second key-way on the crankshaft which we are using for our tests at present. We think this will be… | ||
| scan0206 | Replacing case-hardened piston pins and confirming the increased stiffness of the latest 20 HP crankshaft. | ||
| View original record | 48010 Hs. from R. R2/M21.11.27. X.3996 X.5010 X.8010 IT IS OF UTMOST IMPORTANCE TO REPLACE ALL CASE-HARDENED PISTON PINS WITH THOSE MADE FROM VALVE SPRING STEEL HARDENED AND TEMPERED TO ABOUT 400… | ||
| scan0207 | Principles of crankshaft stiffness and design considerations for journals, webs, and pins. | ||
| View original record | Hs. RG. BY. from R. c. to BJ. Wor. X8010 R1/M23.11.27. CRANKSHAFT - STIFFNESS. X.8010 X.5010 X.3865 All our shafts must be looked upon as continuous, (not just single cranks.) Bearings must only be… | ||
| scan0208 | Air Ministry's empirical formula for crankshaft stiffness and comparing calculated versus test results. | ||
| View original record | RG BY X8010 Hs/Tsnl/LG24.11.27. AIR MINISTRY EMPIRICAL FORMULA FOR CRANKSHAFT STIFFNESS. X5010 The following are a few notes on the method of obtaining a comparison between the calculated and test… | ||
| scan0209 | Empirical formula and data for crankshaft stiffness in bearings. | ||
| View original record | SUGGESTED EMPIRICAL FORMULA FOR CRANK SHAFT STIFFNESS IN BEARINGS EQUIVALENT LENGTH FROM A TO B IN TERMS OF JOURNAL SHAFT = l = (2b + .8h) + 3/4 * ((d₁⁴ - δ₁⁴)/(d₂⁴ - δ₂⁴)) * a + 3r/2 * ((d₁⁴ -… | ||
| scan0210 | Revisions to the crankshaft and connecting rods for EAC.10 and 14 models. | ||
| View original record | L8010 BY. from E. c. to BJ. Hs. E1/M25.11.27. X. 8010 X. 7010 X. 8030 X. 7030 X. 8000 EAC.10 & 14 CRANKSHAFT AND CONN. RODS. We send you herewith LeC. 2488 shewing the revised crankshaft and conn.… | ||
| scan0211 | Test report on the 40/50 crankshaft damper settings on car 10-EX. | ||
| View original record | X Solo Hs/Rm/LG5.12.27. 40/50 CRANKSHAFT DAMPER. X634 Varied tests we have carried out with this damper on 10-EX. It was found that with the driving springs giving 8½ lbs. load when the damper came up… | ||
| scan0212 | New Phantom crankshaft and its use in the F.2 series. | ||
| View original record | E. Dept. c. Hs. X8010 BY6/G.6.12.27. PHANTOM CRANKSHAFT. Please note that the crankshaft which we have just produced to R's latest LeC. is the crank which we shall use for F.2 series. The journals and… | ||
| scan0213 | Issues and potential materials for crankshaft friction dampers on 40/50 & 20 HP engines. | ||
| View original record | Hs. E. DA. from R. c. to BJ. Wow. BY. OY. 48010 R2/M11.1.28. 40/50 & 20 HP. CRANKSHAFT FRICTION DAMPERS. X.7770 X.634 X.8010 X.5010 Originally these had a dry surface, and seemed to be the easiest… | ||
| scan0214 | Crankshaft damper issues, including stiction and a 'galloping' knock, and evaluating alternative materials like woven cotton and designs from competitors like Chrysler. | ||
| View original record | R. from E. c. to Hs. +8010 E1/M14.1.28. RE. CRANKSHAFT DAMPERS. X. 8010 X. 4012 X. 634 X. 8300 X. 4117 I understand from Hs. that nothing gives as good results as woven cotton. This remains to be… | ||
| scan0215 | Requesting two latest type extra stiff crankshafts for the 20 HP and 40/50 models. | ||
| View original record | X8010 To RHC. from Hs/Rn. Hs/Rm5/LG31.1.28. CRANKSHAFTS. X5010 We require two off the latest type extra stiff crankshafts for both the 20 HP. and the 40/50. One in each case to be machined for the… | ||
| scan0216 | Materials and performance issues related to car engine crankshaft dampers. | ||
| View original record | X8010 R. HS. from R. BY. c. to BJ. Wor. R2/M2.2.28. CAR ENGINES - CRANKSHAFT DAMPERS. X.634 X.7010 X.8010 X.8300 I am expecting a report on the best material for the friction surface. Our old practice… | ||
| scan0217 | Table comparing the dimensional specifications for various engine crankshafts. | ||
| View original record | CRANKSHAFT DETAILS. X8010 X5010 X3531 Engine. Part No. | Phantom E.75216 | Sports Phantom. E.76546 | 1-G-1 E.18881. | Std. 20 HP. E.54064. | Stiffer 20 HP. E.51976. | India 111. LeC. 2480 No.of brgs.… | ||
| scan0218 | Comparison table of crankshaft details for various engines. | ||
| View original record | CRANKSHAFT DETAILS. Engine Part No. Lorraine. | EAC.10 & 14. LEC.2488 | Stutz. 8. | 2nd. India 111. LEC.249 No. of brgs. 4 | 7 | 9 | 7 Outer dia. 1.890 | 2.6245 | 2.500 | 2.125 Inner dia. & .800 |… | ||
| scan0219 | Comparative table of big end weights and dimensions for various engines. | ||
| View original record | WEIGHT OF BIG END. PIN DIA. "X WIDTH" - .770 lbs. 1.3 | ENGINE. | Little end wt. lbs. | Big end wt. lbs. | Dia. of crankpin. ins. | Width of crankpin ins. | Length of rod ins. | P = DxW | W = P/1.3 -… | ||
| scan0220 | Letter to Major B.C. Carter concerning crankshaft torsional vibrations and his formula. | ||
| View original record | X8010 Hs/Tsn2/T. 29th February, 1928. X5010 X634 Major B.C. Carter, R.A.E., Farnborough. Dear Sir, We attach the results of our work on Crankshaft Torsional Vibrations. As you will see, the basis all… | ||
| scan0221 | The results and conclusions from recent work on crankshaft torsional vibrations. | ||
| View original record | 2 Hs/Tsnl/T29.4.28. CRANKSHAFT TORSIONAL VIBRATIONS. We give below the results of recent work on the above subject. Fig.1 shows the results of tests on the torsional stiffness of crankshafts. Figs. 2… | ||
| scan0222 | Report page detailing the results of crankshaft stiffness tests for Phantom and 20 HP models, including the effects of removing bearings. | ||
| View original record | -2- Contd. The results of tests with various numbers of bearings are included in the above tables, but we give below the effect on three shafts of removing all but the two end and the centre bearings.… | ||
| scan0223 | Crankshaft stiffness tests and calculations for various engines, including the 20 HP, Phantom, and F.XI aero engine. | ||
| View original record | -3- Contd. a main journal with the bearing omitted. Fig.6 shows the result of the test, on the centre journal of a 20 H.P. We also did a test to show the effect of bevelling the outer extremities of… | ||
| scan0224 | Concluding page of a document, noting that test results are not yet available and offering further clarification. | ||
| View original record | -4- Contd. have not yet got test results to send you. We hope the above information will be of use to you, and will gladly amplify any particular point if you should require it. Hs/S.S. Tresilian. | ||
| scan0225 | Rigidity of crankshafts, specifically referencing the Stutz shaft design. | ||
| View original record | E. Hs. from R. c. to BJ. BY. RG. F1. X8010 R7/M5.3.28. X.8010 X.4336 X.634 CRANKSHAFT RIGIDITY - STUTZ AND OTHERS. Mr. Tresilians' work in watching this is excellent. The Stutz shaft is surprisingly… | ||
| scan0226 | Letter to Major B.C. Carter regarding crankshaft torsional vibrations and stiffness formulas. | ||
| View original record | X8010 Exptl: Dept: Hs/Tsnl/LG. 1st. May 1928. Major B.C.Carter, Royal Aircraft Est., St. Farnborough, Hants. X634 Dear Sir, CRANKSHAFT TORSIONAL VIBRATIONS. We have received your letter dated 30.4.28.… | ||
| scan0227 | Report page detailing engine bearing stiffness measurements and discussing experimental procedures for crankshaft frequencies. | ||
| View original record | Contd :- -2- Engine. Piece No. Stiffness in in-bearings. Lbs.ins/rad. out-of-bearings. India 111. E.54640 2.11 X 10^6 1.675 X 10^6 Sports Phantom. E.76546 3.485 " 2.610 " Std. Phantom. E.75216 4.12 "… | ||
| scan0228 | Technical memorandum detailing crankshaft lubrication requirements for chassis and aero engines. | ||
| View original record | H.s from R. c. to BJ. BY. RG. E. X 8010 RL/M25.4.28. CRANKSHAFT LUBRICATION - CHASSIS X.5010 AND AERO ENGINES. X.8010 X.3865 X.2176 We expect the oil feed to be on all seven bearings. We expect the… | ||
| scan0229 | Lubrication of crankshafts for aero and car engines, including proposed modifications. | ||
| View original record | X8010 RG. from R. HS. c. to BJ. BY. c. to E. FI. R6/M28.4.28. AERO. & CAR ENGINES. X.8010 X.3865 LUBRICATION OF CRANKSHAFTS. X.5010 X.2463 This matter was discussed and it was agreed that it should go… | ||
| scan0230 | Letter discussing crankshaft dimensions, test results, and a formula for estimating torsional periods. | ||
| View original record | [Handwritten top of page] X8010 He/Tsn2/LG. Expl: Dept: 3rd. May 1928. [Handwritten notes] X5010 -> for prints X8010 X634 H. Constant Esq., Engineering Laboratory, Cambridge. Dear Constant,… | ||
| scan0231 | Letter discussing additions to Carter's formula for a 6-cylinder engine and electrical excitation experiments. | ||
| View original record | contd :- -2- The third diagram attached shews the extra terms that we have added to Carter's formula to make it cover a 4-bearing 6-cyl. engine. I should be interested if you would try it sometime on… | ||
| scan0232 | Visit to Cambridge Engineering Laboratory regarding research into crankshaft torsional vibration. | ||
| View original record | To R. from Hs/Tsn. c.c. to BJ. Wor. c.c. to RG. E. c.c. to DA. BY. VISIT TO CAMBRIDGE RE. CRANKSHAFTS. X.634 X.5010 X.2442 X.1282 X.8010 Considerable research work on the above subject is being done… | ||
| scan0233 | Engine experiments, including running an Eagle VIII on gas and upcoming tests on a diesel engine for airships. | ||
| View original record | contd : - -2- frequency of 4000 vibrations per min. in a shaft with a calculated frequency of 5000 per min. They have also got an Eagle Vlll. engine at Cambridge which they are running on gas. The… | ||
| scan0234 | Modification to the oil tubes in F. & H. engines and chassis crankshafts to prevent contamination. | ||
| View original record | To BY. from RHC. c. to RG. c. to Hs. X8010 RHC2/BELL.7.28. RE. F. & H. ENGINES AND CHASSIS CRANKSHAFTS. X.7010 X.3865 X.8010 X.4458 X.5010 With reference to the oil tubes in the crankshaft pins. It… | ||
| scan0235 | The stiffness and weight comparison of a large pin crankshaft against standard shafts. | ||
| View original record | To R. from Hs/Tsn. c. to Sg. Wor. c. to E. Da. c. to By. X 8010 Hs/Tsn.1/MJ.29.8.29. [handwritten: X 7010] [handwritten: X 8010] [handwritten: X 1418] S.S. CRANKSHAFT WITH LARGE PINS.… | ||
| scan0236 | Secret memorandum concerning instructions for a spring drive and slipper wheel. | ||
| View original record | To Wor. } To EY. } To H. } FROM HS. To EP. } To Mx. } To Sh. } S E C R E T. X8020 E. A. C. Hs3/LGS1.1.25. SPRING DRIVE AND SLIPPER WHEEL. We attach herewith for your information, instructions re :-… | ||
| scan0237 | Notes on the assembly of the EAC Spring Drive and Slipper Wheel. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/LGS1.1.25. NOTES ON THE EAC. SPRING DRIVE AND SLIPPER WHEEL. For assembly of this unit, see the arrangement drawing… | ||
| scan0238 | Flywheel washers, friction load checking, and spring drive fitting. | ||
| View original record | R.R. 493A (50n) (D.B. 175 25-9-24) J.H.D. -2- EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/LG31.1.25. FLYWHEEL WASHERS. E.70792. These are made of Continental Bakelite - the same as for the Damper… | ||
| scan0239 | Instructions for fitting the spring drive, crankshaft, and wheelcase components. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: He/ACL/LCS.1.25. and keyway on the crankshaft must be facing upwards. Remove the withdrawal nut E.70799 and the… | ||
| scan0240 | Efficiency of the Spring Drive Driving Spring, suggesting a report from the Test Department. | ||
| View original record | To BY. from Hs. X8020 Hs6/LG16.3.25. EAC. SPRING DRIVE. Re. BY/SS3/DB28.2.25. Spring Drive Driving Spring. We have received no complaints which would be due to these springs E.72864, but perhaps the… | ||
| scan0241 | Request for the strengths of torsion and friction springs for a damped spring drive pendulum lever. | ||
| View original record | To Hs. from DA. X. 8020 DA/HDY1/M10.7.25. DAMPED SPRING DRIVE FOR PENDULUM LEVER. We understand that you would like more friction in the damped spring drive, and weaker torsion springs. Will you… | ||
| scan0242 | Issues with the New Phantom Spring Drives seizing and providing assembly instructions to prevent it. | ||
| View original record | 78020 To Hs from RHC. RHC15/EE. 27.11.25. RE NEW PHANTOM SPRING DRIVES With reference to Spring Drive which seized on Crankshaft taper. This was corrected and made good fit on taper and, since… | ||
| scan0243 | The failure of the fixing of the Phantom spring drive. | ||
| View original record | R.R. 49A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 48020 REF: Hs3/LG28:11.25. To Mx. from Hs. c. to BY. c. to Wor. c. to EP. FAILURE OF FIXING OF PHANTOM SPRING DRIVE. We have… | ||
| scan0244 | Issues with seizing New Phantom spring drives and providing assembly recommendations. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT Expl. No. REF: RIC15/BE27.11.25. To Hs. from RIC. COPY. RE. NEW PHANTOM SPRING DRIVES. With reference to spring drive which seized on… | ||
| scan0245 | The failure of the Phantom Spring Drive fixing and outlining corrective actions. | ||
| View original record | Wor. c. Hs. c. Hy. +8020 U. SFT9/EMM.2.12.25. FAILURE OF FIXING OF PHANTOM SPRING DRIVE. In reply to Hs' memo.reference Hs3/LG.28.11.25 - when this engine was erected, particular care was taken by the… | ||
| scan0246 | Potential causes and solutions for magneto drive slip and camshaft drive failure. | ||
| View original record | To Hs. from R. c. to BJ. RG. BY. X8020 R2/M16.10.26. MAGNETO DRIVE SLIP & CAMSHAFT DRIVE FAILURE. X.8020. X.8090 X.8100 The camshaft drive we have decided to make solid. The magneto drive coupling… | ||
| scan0247 | The results of a test on Chassis No. 7-LF to address a 'galloping knock'. | ||
| View original record | HS X8020 S/W. Wor. Copy to:- C. H. Hs. Mx. EP. CWB31/GW/13.1.28. Re: Chassis No. 7-LF. Major Victor Walker. (Galloping knock.) -------------------------------- I think it would be useful to place on… | ||
| scan0248 | Page two of a memo discussing the results of a new material for slipper drives and the need for further testing. | ||
| View original record | (2) owner so that if any variation from its present state occurs we shall know of it and be able to report to you. The whole result is considered to be most satisfactory and it now remains to complete… | ||
| scan0249 | Experimental slipper flywheel settings for the 7-LF car, comparing them to Springfield and Phantom standards. | ||
| View original record | To HOR. From Hs. c. to SY. EJ. lha. c. to Mx. EP. OBS. X8020 Hs2/LM16.1.33. SETTING OF SLIPPER FLYWHEELS. X8020 X8300 Referring to the setting of the flywheels which Hs/CWH. used on the engine of 7-LF… | ||
| scan0250 | Investigating an engine knock in a 7-LP car by adjusting the slipper wheel. | ||
| View original record | To Wor. from H= -GWH. c. to HY. R. HS. c. to MX. RP. CWS. RE. KNOCK IN ENGINE OF 7-LP. I proceeded to London as requested and tested the car. The knock was very bad at 20 m.p.h. We proceeded to… | ||
| scan0251 | Request to put in hand one set of heavier-than-standard slipper flywheels for a Phantom model. | ||
| View original record | To: RMC C. Hs. C. BY/CS X5020 BY/RD3/ML19.1.28. PHANTOM SLIPPER FLYWHEEL - SEC:5020. Will you please put in hand one set of slipper flywheels to the following blueprints, these represent heavier… | ||
| scan0252 | Modification to the Phantom Spring Drive, referencing manufacturing orders. | ||
| View original record | TO Hives. c. to RHC. c. to Hs. 48020 BY/CS1/DB.23.1.28. Re Phantom - Spring Drive - Sec:5020. With reference to our instructions BY/CS6/DB.20.1.28, for 20 sets of Springs E.77078, please note that… | ||
| scan0253 | Requesting an urgent order of flywheel springs for a Phantom spring drive to test a fix for 'galloping knocks'. | ||
| View original record | [Struck through text] c. to RHC. c. to HS. f8020 BY/CS6/DB.20.1.28. Re Phantom - Spring Drive - Sec:5020. Please receive herewith print of - E.77078 - Flywheel Spring. Will you please order up 20 sets… | ||
| scan0254 | Investigation into the cause of a 'galloping knock' engine noise reported by customers. | ||
| View original record | To R. from Hs/GWH. c. to BJ. Wor. c. to RG. M. c. to BY. OY. X8020 Hs/GWH/LG23.1.28. INVESTIGATION OF GALLOPING KNOCKS. XLH17 This is a complaint that has been prevalent and complained of by customers… | ||
| scan0255 | Investigation into engine knock, involving tests with a slipper wheel and analysis of crankshaft torsional stress. | ||
| View original record | contd :- -2- considerably reduced and was sufficient to prevent crankshaft periods being objectionable. We then tried a heavier slipper wheel by bolting an extra rim on to the existing wheels. This… | ||
| scan0256 | Analysis of crankshaft torsional strain and engine knock caused by slipper wheel friction. | ||
| View original record | contd :- -3- (up to a certain load) and over run or wind up the crankshaft, until the maximum torsional strain is reached. The speed of the slipper wheels then overcome the friction and slip, thereby… | ||
| scan0257 | Design and testing of a stronger driving spring (E.77646) for a Phantom model. | ||
| View original record | K8220 c. to Hs/Mr Hancock. BY/CSA/DB.5.6.28. Re Phantom - Spring Drive - Sec:5020. LeC.2462/2472. Please receive herewith prints of - E.77646 - Spring (driving). detailed in accordance with Mr… | ||
| scan0258 | The replacement of a damper spring for the crankshaft spring drive on a Phantom car. | ||
| View original record | Sft. ROY Hs/Mr. Hancock. Mx c. BY/CS. ------------------- X8020 BY10/G.13.8.28. PHANTOM CAR - CRANKSHAFT SPRING DRIVE FOR CAMSHAFT. Will you kindly note that with the reduced poundage on the main… | ||
| scan0259 | Suitability and modification of a crankshaft spring drive for a Phantom car's camshaft. | ||
| View original record | X8020 c HS/Mr Hancock. from Mx. Hx11/T14.8.28. PHANTOM CAR - CRANKSHAFT SPRING DRIVE FOR CAMSHAFT. With reference to your memo BY10/G13.8.28 in which you confirm my recommendation to lower the… | ||
| scan0260 | Order for 8 springs with specific dimensions and material. | ||
| View original record | x8020 To RHC. from Hs/Rm. Hs/Rml/LG1.10.28. Will you please order for us :- 8 springs - Wire dia. .232 (4 S.W.G.) 4 1/2 working coils and a coil ground flat at each end. Free length 1.570 Salters… | ||
| scan0261 | Engine alterations involving longer connecting rods and shorter pistons. | ||
| View original record | To BY. from E. c. to CJ. HS. X.9030 (crossed out) X.9040 S E C R E T X 9030 (handwritten, crossed out) E1/M3.6.24. EAC.11. ENGINE. X 8030 (handwritten, crossed out) X 8040 (handwritten) LONGER… | ||
| scan0262 | Performance of longer connecting rods and lighter pistons in the 46-PK engine. | ||
| View original record | To CJ. from R. c. to BJ. Wor. Rg. Hs. Da. E. BY. PN. H. EP. C. X8030 S E C R E T. R2/M12.7.24. EAC.11. RE. 46-PK. RE. PISTONS AND CON. RODS. X.9030 (crossed out) X.9040 (crossed out) X8030 X9040 The… | ||
| scan0263 | Secret memo discussing modifications to pistons, connecting rods, exhaust pipes, and the Scintilla magneto. | ||
| View original record | X8030 To BY/C. from E. c. to Hs. S E C R E T. E3/M/17.7.24. E.A.C.11. PISTONS AND CONNECTING RODS. X.9030 X8030 X.9040 X9040 In reply to your memo. BY/C7/H15.7.24., we should be glad if you would go… | ||
| scan0264 | Cable regarding the use of copper tubes in the cylinder and head for the E.A.C. engine. | ||
| View original record | Secret. X8030 Wor. [crossed out] Hs. [crossed out] Wd. [crossed out] BY7/H. 16. 3. 25. E.A.C. ENGINE. RE TUBES IN CYLINDER & HEAD. I have cabled R. as follows:- "RE HIVES REPORT ON COPPER TUBES IN… | ||
| scan0265 | Connecting rod bearing failure on a car during tests in France. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. Expl. No. X 8030 REF: Hs6/LG16.4.25. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. S E C R E T. TESTS IN FRANCE -… | ||
| scan0266 | The condition of connecting rod bearings after a 10,000-mile test in France. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8030 REF: Hs./LG18.4.25. To R. from Hs. c.c. to CJ. BJ. c.c. to RG. R. c.c. to DA. HY. c. to Wor. S E C R E T. EAC. 'V' SERIES… | ||
| scan0267 | Test to reproduce connecting rod bearing failure on an EAC engine. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8030 REF: HsA/1/329.4.25. To R. from Hs. c. to CJ. BJ. c. to EG. E. c. to DA. BY. c. to WOr. S E C R E T. CON. ROD BEARING… | ||
| scan0268 | Telegram reporting the failure of conrod big ends and requesting two new high-speed rods to continue testing. | ||
| View original record | RR 144A (50BKS.) (SK 871 23-5-23) MP 272631 ROLLS-ROYCE LTD. X8030 TELEGRAM RECEIVED BY TELEPHONE. Stamp: F.T.I.E.D MAY 1925 REC'D Time Received: 12-0 Date: 9-5-25 To: Angleterre Hives Roycru Derby… | ||
| scan0269 | Form for a telegram received by telephone with handwritten notes. | ||
| View original record | RR 144A (50BKS.) (SK 871 23-5-23) MP 272631 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received Date To By from 2 wire instructions FROM Hancock THIS SHEET MUST BE FILED. | ||
| scan0270 | The failure of connecting rod bearings on a 93-NK car. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8030 REF. Hs4/LG12.5.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Wor. FAILURE OF CON. ROD BEARINGS ON… | ||
| scan0271 | Despatch of 6 connecting rods to Mr. Royce. | ||
| View original record | To BP. from Hs. c. to E. c. to Mr. Chatwin (Stores) X 8030 Hs5/LG4. 6.25. EAC. CONNECTING RODS. We are sending into the Stores 6 Connecting Rods. Will you please have these despatched to Mr. Royce,… | ||
| scan0272 | The failure of connecting rods from a 93-NK car, noting issues with whitemetal adhesion. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8030 REF. Hs1/LG4.6.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. EAC 'V' SERIES. CONNECTING RODS.… | ||
| scan0273 | Confirmation of a wire message regarding an investigation into different alloy steels for connecting rods. | ||
| View original record | X8030 CONFIRMATION OF WIRE. WEST WITTERING. 6/6/25. HIVES. ROYCAR. DERBY. --- EAC. CON. RODS INVESTIGATE RELATIVE FATIGUE VALUE OF DIFFERENT ALLOY STEEL COMPARED WITH FACILITY FOR TINNING AND WHITE… | ||
| scan0274 | Modifications and trials for connecting rods. | ||
| View original record | To Hs. from R. c. to CJ. BY. +8030 R1/M12.6.25. EAC. & GOSHAWK CONN. RODS. X.8030 X.8030 Referring to the old 40/50 rods, the only great change we can find is not fitting bushes to the big ends. I… | ||
| scan0275 | Three proposed experiments for modifying EAC connecting rods. | ||
| View original record | X. 8030 To BY. from E. c. to CJ. Hs. E1/M12.6.25. EAC. CONNECTING ROD MODIFICATIONS. We send you herewith drawing LeC.2081., shewing 3 proposed experiments in connection with EAC. connecting rods as… | ||
| scan0276 | Proposing the use of duralumin connecting rods in the EAC engine to reduce weight and vibrations. | ||
| View original record | To BY. from R. Hs. X8030 R6/M3. 7. 25. EAC. ENGINE. X. 8770 X. 8030 It has occurred to me that the EAC. engine might be greatly benefitted by fitting duralumin con. rods, and as we are now proposing… | ||
| scan0277 | Modifications to New Phantom connecting rods and camshaft bearings. | ||
| View original record | X. 8030 To Hs. from R. c. to CJ. BY. R7/M25.8.25. NEW PHANTOM CON. RODS. X. 8030 We are hoping and expecting to have news on the various modifications to the con. rods with - (1) longitudinal… | ||
| scan0278 | Endurance test of various connecting rod bearings. | ||
| View original record | R.R. 493a (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 48030 REF: Hs/ACL/LG16.9.25. To R. from Hs/ACL. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. EAC. CONNECTING ROD… | ||
| scan0279 | Tests of connecting rod big end bearings, comparing standard and mild steel rods. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. +8030 EXPERIMENTAL REPORT. COPIES TO: RCJ BJ WOR By. E Da EP. PN. OY. RS Expl. No. REF. Hs8/LG28.9.25. OBJECT OF TEST. Tests on connecting rod big end… | ||
| scan0280 | 22.5 hour test of new E.A.C. connecting rod bearings with loose white metal lined bushes. | ||
| View original record | R.R. 498A (80 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT Expl. No. REF HS/ACL/LG28.9.25. E.A.C. CONNECTING ROD BEARINGS. LOOSE WHITE METAL LINED BUSHES. We have just completed a 22½ hrs. test of… | ||
| scan0281 | Crankcase expansion, bearing thrust, and comparing the reliability of bronze versus mild steel loose bushes. | ||
| View original record | R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF:Hs/ACL/LG28.9.25. Travel of cyl. block relative to crankshaft due to crankcase expansion. Evidence of thrust on this… | ||
| scan0282 | Table detailing design changes and specifications for New Phantom model connecting rods. | ||
| View original record | Hs. X8030 By/S821/11/25 New Phantom. Conn Rods. Lec. 1701. | 10" centres. W.M. direct & Rod + Cap | E70415/6. 19.4.23. | Were fitted to Chassis. Lec. 1879. | 11.500 centres. W.M. direct & Rod + Cap |… | ||
| scan0283 | Cablegram from Springfield to Derby requesting details for a Phantom connecting rod with separate big end bushing. | ||
| View original record | H.R.A 690 2m-12-22 45282 CABLEGRAM ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X6030 Date December 2, 1925. Telegraph Company Please transmit the following message: Night rate To Rolls-Royce Derby… | ||
| scan0284 | Standardisation document for modified connecting rod bearings. | ||
| View original record | Hs RR 755 (10H) (SL391 2-11-23) MP 281297 X. 8030. COMPLETED 22.12.25 STANDARDISATION of CHASSIS PARTS. Date 10.12.25 Description of Parts. MODIFIED CONNECTING ROD BEARINGS. Origin. To increase… | ||
| scan0285 | Design change for the 20 HP chassis connecting rods to use separate bushes, similar to the Phantom model. | ||
| View original record | To BY. from E. c. to CJ. R. Hs. X.8030 E2/M7.1.26. 20 HP. CHASSIS CONNECTING RODS. X.5030 X.8030 In reply to your memo. BY23/H29.12.25., giving experiences of 20 HP. connecting rods white metalled… | ||
| scan0286 | Test on a lighter Phantom engine using old short rods to save weight and reduce crankcase height. | ||
| View original record | To Hs. from E. c. to CJ. c. to R. c. to RG. c. to BY. 8030 E2/M23.2.26. RE. LIGHTER PHANTOM ENGINE. X.8840 X.8000 X.8030 In our memo. E1/M21.11.25 we asked for a test to be made of a Phantom engine… | ||
| scan0287 | Modifications to the Lighter Phantom Engine's connecting rod length. | ||
| View original record | To Hs. from E. c. to BJ. R. BY. +8030 E3/M15.4.26. RE. LIGHTER PHANTOM ENGINE. X. 8030 X. 8840 X. 8000 Regarding our last conversation respecting the possibility of shortening the Phantom con. rods… | ||
| scan0288 | Choice between long or short connecting rods for the Lighter Phantom Engine. | ||
| View original record | HS. X8030 BY3/H. 19.4.26. LIGHTER PHANTOM ENGINE. RE LONG OR SHORT RODS. We read E3/M. 15.4.26. as meaning that E. wants Works to say definitely whether the long rods or short rods should be used in… | ||
| scan0289 | Modifications and testing for a lighter Phantom engine, focusing on weight reduction. | ||
| View original record | To Hs. } BY. } FROM R. c. to BJ. Wor. L8030 R5/M4.5.26. LIGHTER PHANTOM ENGINE. X.8840 X.8030 X.8770 X.8050 Allow no expense to be put on this engine that is not suitable for the anti-detonating head.… | ||
| scan0290 | Defect in Phantom cylinder block castings and proposed remedies to eliminate piston knocks. | ||
| View original record | To BY. from R. Hs. c. to BJ. Wor. 48030 R1/M25.6.27. PHANTOM CYL. BLOCKS. X.8030 X.8040 OY. has pointed out a defect in our Phantom cyl. blocks casting. This has shewn itself very definitely in the… | ||
| scan0291 | Modifications and casting improvements for Phantom cylinder blocks. | ||
| View original record | His RECEIVED JUN 28 1927 X8030 R. [crossed out] c.Wor. c.BJ c.Hs. c.Cy. BY9/H. 27.6.27. ----------------- PHANTOM CYLINDER BLOCKS. ----------------------- We took in hand the question of the cylinder… | ||
| scan0292 | Disagreeing with the suggestion to ask customers to tighten the cylinder head and adjust tappets post-repair. | ||
| View original record | Y8030 To Hm. from Hs. c. to BY. c. to MX. Hs1/LG4.7.27. AGREEMENT FORM. Sheet No. Hm.50. We do not consider we ought to expect customers to carry out the work suggested on this sheet. If we were a… | ||
| scan0293 | Proposal to experiment with fitting Hispano connecting rods to the Phantom engine to improve smoothness. | ||
| View original record | X7030 To R. from Hs=ACL. c. to BJ. Wor. c. to E. DA. c. to EY. Hs/ACL1/LG21.9.27. PHANTOM CONNECTING RODS. With regard to the proposed lightening of the Phantom conn. rods in order to increase the… | ||
| scan0294 | Confirming the sending of drawing LeC. 2466 for the Phantom Sports Connecting Rod. | ||
| View original record | X8030 ORIGINAL BY. FROM E. C. to RI HS. E2/M1.10.27. PHANTOM SPORTS CON. ROD. X8030. We send you herewith drawing LeC. 2466., shewing the above. E. | ||
| scan0295 | Proposed tubular type connecting rod for the Sports Phantom. | ||
| View original record | To Wor. from Hs. c. to BY. X6030 Hs1/LG4.10.27. CONNECTING ROD FOR SPORTS PHANTOM. We attach herewith a blueprint of the proposed connecting rods for the Sports Phantom. It will be seen that this is… | ||
| scan0296 | Phone message confirmation regarding alterations to a sports car due to a broken crankchamber. | ||
| View original record | X8030 Hs. from R. CONFIRMATION OF 'PHONE MESSAGE FROM R. to HS. X. 8010 X. 8774 X. 8030 R3/M8.10.27. SINCE THE CONFERENCE WITH YOU IN LONDON THE SITUATION HAS CHANGED OWING TO THEBROKEN CRANKCHAMBER,… | ||
| scan0297 | Comparing the weights of tubular section connecting rods between various cars. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to BY. +8030 Hs/Rm3/LG18.10.27. TUBULAR SECTION CONNECTING RODS. X5030 (crossed out) X8030 (crossed out) X4204 (crossed out) In a previous report… | ||
| scan0298 | Comparison table of engine component specifications for 20HP, 40/50HP, Lorraine, and Hispano engines. | ||
| View original record | DETAIL. | 20 HP. | Lorraine. | % diff: of Lorraine wt. | 40/50 HP. | Hispano. | % diff: of Hispano wt. --- | --- | --- | --- | --- | --- | --- Conn: rod length. | 7.95" | 9.062" | | 11.5" | 11.8" |… | ||
| scan0299 | Revisions to the crankshaft and connecting rods for EAC.10 and 14 models. | ||
| View original record | BY: from E. c. to B.J. Hs. 48030 E1/M25.11.27. X.8010 X.7010 X.8030 X.7030 X.8000 EAC.10 & 14 CRANKSHAFT AND CONN. RODS. We send you herewith LeC. 2438 shewing the revised crankshaft and conn. rods… | ||
| scan0300 | Comparison of Pierce Arrow and Phantom connecting rod piston assembly weights, with a request to source Pierce Arrow parts for inspection. | ||
| View original record | X. 8030 To OY. from Hs/Rn. Hs/Rn2/LG2.1.28. COMPARISON OF PIERCE ARROW AND PHANTOM CONNECTING ROD PISTON ASSEMBLY. X.4588 It is interesting to note the weights of the Pierce Arrow conn. rod and piston… | ||
| scan0301 | Proposed alterations to the 'V' series exhaust pipes, main switch, and thermometer position. | ||
| View original record | To BY. from E. c. to CJ. HS. 48050 E1/M8.12.24. 'V' SERIES EXHAUST PIPES. X.8230 X.8050 We send you herewith drawings No.LeC.1956., arrangement of exhaust pipes, shewing the schemes on which we are… | ||
| scan0302 | Material change for valve stem guides in the E.A.C.II cylinder head from Cast Iron to Phosphor Bronze. | ||
| View original record | X8050 Hs. C. Mr. Shelton. BY8/H. 2.12.24. E.A.C.II. CYLINDER HEAD. It has just been brought to my attention that we are using Cast Iron Guides for the valve stems in the cylinder head. It appears to… | ||
| scan0303 | Material choice between Stainless Steel and Monel Metal for E.A.C. cylinder tubes. | ||
| View original record | To Hs. [strikethrough] X8050 BY/ML23. 1. 25. E.A.C. CYLINDERS. STAINLESS STEEL TUBES. We find that it is necessary to order a further supply of tubes for E.A.C. Cylinders. Are you of the opinion that… | ||
| scan0304 | Difficulties in swaging stainless steel and Monel metal cylinder water tubes, with a comparison to copper and thermal expansion data. | ||
| View original record | X.8050 To Hs from RHC. RHO2/BE. 26.1.25. ----------------- RE:EAC CYLINDER WATER TUBES. With reference to By's memo regarding the above. Whilst we we have had Stainless Steel Tubes, we have not as yet… | ||
| scan0305 | The causes of 'EAC' over-oiling, focusing on oil passing valve stems and the optimal orientation of scraper rings. | ||
| View original record | R.R. 493A (50n) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. 78050 Expl. No. REF: Hs4/L027.2.25. S E C R E T. 'EAC' OVER-OILING.… | ||
| scan0306 | Cylinder over-oiling, offering a theory on the performance of chamfered piston rings. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF Hs/ACL/LG27.2.25. RE: CYLINDER OVEROILING - E.A.C. Observation of the different results obtained with the standard rings… | ||
| scan0307 | Choice of material for cylinder water tubes, comparing copper, monel metal, and stainless steel. | ||
| View original record | X8050 Hs. BY8/H. 9. 3. 25. The question of the material from which the water tubes in the cylinders are made, still requires settling. If it should happen that you are of the opinion that the copper… | ||
| scan0308 | Tubes in cylinder heads, comparing monel, copper, and stainless steel, and recommending copper for future use. | ||
| View original record | R.R. 493A (50m) (D.B. 175' 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X8050 REF: Hs2/LG11.3.25. TO R. FROM HS. c. to CJ. c. to RG. c. to DA. BY. c. to WOR. S E C R E T. E. A. C. TUBES IN CYLINDER… | ||
| scan0309 | Reliability and expansion of copper tubes in cylinder heads. | ||
| View original record | To E. from R. c. to CJ. RG. c. to DA. BY. c. to Hs. X.8050 S E C R E T. R4/M23.3.25. E. A. C. CYLINDER HEAD. X.8050 This requires further comments. Regarding copper tubes through cylinder castings,… | ||
| scan0310 | Calculated versus tested cylinder capacity, and the instructed acceptable range. | ||
| View original record | [REDACTED] c. to Hs. X.8050 BY/SS4/DB.27.3.25. & Re EAC. - Cylinder Capacity. The calculated cylinder capacity for 4 to 1 compression Piston is 26.000 cu.ins. with piston at top of its stroke. We… | ||
| scan0311 | Cylinder temperature, expansion, and oiling for the EAC engine. | ||
| View original record | R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. x8050 REF: Hs1/LG16.5.25. To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. EAC. OILING. [Handwritten: x8980… | ||
| scan0312 | Tests with a new cylinder head and new sparking plug positions. | ||
| View original record | 48050 R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: RCJ BJ WOP By E.Da. EF CJFOT RG Expl. No. K928 REF.Hs4/LG18.9.25. OBJECT OF TEST. TESTER. Tests with new cylinder head… | ||
| scan0313 | EAC engine with opposed sparking plugs and an induction pipe in the cylinder head. | ||
| View original record | R.R. 493A (50 H) (D.D. 91, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF. HS/ACL/LG18.9.25. EAC. ENGINE WITH OPPOSED SPARKING PLUGS AND INDUCTION PIPE IN CYLINDER HEAD. (LeC.1876). The following… | ||
| scan0314 | Engine power loss, distribution, and detonation under different induction and ignition configurations. | ||
| View original record | R.R. 493A (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF Hs/ACL/LG18.9.25. than either the jacketed pipe or the jacketed pipe and hot spot combined. In view of the possibility… | ||
| scan0315 | Investigating the influence of spark plug position and ignition timing on engine detonation and power. | ||
| View original record | R.R. 498A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT -3- Expl. No. REF.HS/ACL/LG18.9.25. synchronized the engine gave signs of late ignition when the magneto was switched off and engine was… | ||
| scan0316 | The effect of single and dual ignition systems on ignition advance and detonation. | ||
| View original record | R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. -4- Expl. No. REF Hs/ACL/LG18.9.25. each ignition when used singly, or together. The ignition curves show that the plugs on the exhaust… | ||
| scan0317 | Performance graph showing engine Brake Horsepower against RPM to illustrate power loss caused by a water-heated induction pipe. | ||
| View original record | SHEET 1. ENGINE WITH OPPOSED PLUGS & INDUCTION PIPE IN CYLINDER HEAD. LOSS OF POWER CAUSED BY WATER HEATED INDUCTION PIPE. TEST BENCH EXH. SYSTEM WITH CUT OUT OPEN 4.2 TO 1 COMPN RATIO 20/7/25.… | ||
| scan0318 | Performance graph comparing induction systems by plotting Brake Horsepower against Revolutions Per Minute. | ||
| View original record | INDUCTION SYSTEM COMPARISONS. ENG. WITH OPPOSED SPARKING PLUGS (NO 10 SPECIAL) AND STANDARD ENGINES. BOTH TESTS WITH SHORT OPEN EXH. PIPES TO EACH PORT & JACKET WATER COLD. ALSO COLD 'HOT SPOT'. No 10… | ||
| scan0319 | Graph plotting ignition firing position against engine RPM to determine the optimal advance for maximum torque and to avoid detonation. | ||
| View original record | BOTH IGNITIONS IN OPERATION. SINGLE CYL. 5.2 TO 1 COMP. RATIO. ADVANCE REQ. FOR MAX TORQUE ALSO ADV. REQ. FOR NO DETONATION. THE LETTERS ON CURVES INDICATE THE IGNS. TO WHICH THEY REFER. FIRING… | ||
| scan0320 | Graph plotting firing position against RPM for a single cylinder engine with a 5.2 to 1 compression ratio. | ||
| View original record | IGNITIONS USED SINGLY. SINGLE CYL 5.2 TO 1. RATIO. FIRING POSITION. DEGREES OF CRANKSHAFT. TOP CENTRE. 0° -10° 10° 20° 30° 40° R.P.M. 250 500 750 1000 1250 MAX TORQUE. B A NO DETONATION WITH NO… | ||
| scan0321 | Weights of the EAC cylinder block and cylinder head. | ||
| View original record | To BY/C. from Hs/Rm. +8050 Hs/Rml/LG10.11.25. EAC. CYLINDER BLOCK. +8840 x.8050 With reference to your enquiry re. the weights of the present EAC. Cyl. block and head. Herewith the following… | ||
| scan0322 | Error in a design report and the design of an aluminium head and cylinders for the Phantom. | ||
| View original record | To BY. from R. c. to CJ. BJ. Hs. +8050 R2/M1.12.25. DESIGN REPORT BY8/H27.11.25. X. 2917 X. 8050 One comment in your last report on design is an error. Regarding the aluminium head and cylinders for… | ||
| scan0323 | Outlining the benefits of using an aluminium head and cylinders for the Phantom engine. | ||
| View original record | To Hs.)FROM R. & E. BY.)LE CANADEL. c. to CJ. L8050 R4/M8.2.26. PHANTOM ENGINE. X.8770 X.8840 X.8050 The aluminium head and cylinders should be made to shew the value of :- (1) Weight saving. (2) Less… | ||
| scan0324 | Further testing on a Phantom cylinder head with opposed sparking plugs to investigate detonation and silencer popping. | ||
| View original record | To Hs. from E. c. to CJ. R. c. to RG. BY. X8050 E3/M23. 2. 26. RE. PHANTOM CYLINDER HEAD WITH OPPOSED SPARKING PLUGS. X.8230 X.8070 X.8050 The above cylinder head has been tested on the bench and its… | ||
| scan0325 | Revised proposals for a lighter Phantom engine with an aluminum cylinder head and block. | ||
| View original record | To BY. from E. c. to RG. Hs. X 8050 E2/M27.2.26. RE. LIGHTER PHANTOM ENGINE WITH ALUM. CYL. HEAD AND BLOCK. X.8050 X.8770 We send you herewith a blueprint of LeC.2204 shewing revised proposals for the… | ||
| scan0326 | Technical memo discussing design suggestions for the Phantom cylinder head to improve combustion and spark plug placement. | ||
| View original record | To R. from E. c. to CJ. Hs. X 8050 E1/M6.3.26. RE. PHANTOM CYLINDER HEAD. X.8050 X.3867 X.8770 As we are about to make patterns for the alum. head and block for the lighter Phantom engine we wondered… | ||
| scan0327 | Analysis of turbulence in combustion, referencing various engine designs including those by Ricardo, Duesenberg, and Hispano. | ||
| View original record | contd :- -2- With a rapid combustion resulting from turbulence it may be expected that the ignition need not be advanced as far as usual. It is said that this is found to be true, and the spark… | ||
| scan0328 | Engine cam and cylinder head design, comparing different methods for achieving turbulence and efficiency. | ||
| View original record | contd :- -3- grinding the cam. Another method of accomplishing the same object would be to remove the rollers from the ends of the tappets and shape these ends to a curve equivalent to a very large… | ||
| scan0329 | Drawing LeC.2212 for the Phantom Aluminium Head and discussing modifications requested by Mr. Royce. | ||
| View original record | To BY. from E. c. to CJ. R. Hs. 6 X8050 E5/M10.3.26. RE. PHANTOM ALUMINIUM HEAD. X. 8070 X. 8050 We send you herewith drawing No.LeC.2212., shewing some information not given on LeC.2204 in connection… | ||
| scan0330 | Simplification of the induction pipe bolting for a Phantom Aluminium Head. | ||
| View original record | To E. & BY. from R. c. to CJ. BJ. Hs. c. to DA. RG. 46050 R1/M10.3.26. PHANTOM ALUM. HEAD. X.8070 X.8050 Your design shewn on print of LeC.2204 seems very good indeed, but might be simplified in the… | ||
| scan0331 | Recommendation to modify Phantom cylinders with extra thickness to reduce knocking sounds. | ||
| View original record | To EY: from Hs. c. to WOP. c. to MX. c. to EP. X8050 Hs3/LGl2. 3.26. PHANTOM CYLINDERS. Attached is a blue-print of the Phantom cylinders marked to shew the extra thickness on the trunks which we have… | ||
| scan0332 | Issue of 'No.5. Cylinder Knock' and the proposed solution of standardizing cylinders with extra thickness on the trunks. | ||
| View original record | BY. Hs. Wor. Mr. N8050 EP12/H19.3.26. re. Knocks in the Engine, apparently emanating from the Pistons. (known as "No.5. Cylinder Knock".) With reference to the above and memo from Hs. reference… | ||
| scan0333 | Design schemes and weight-saving suggestions for the Lighter Phantom Engine. | ||
| View original record | x8050 To CJ. from E. c. to BY. Hs. E1/M31.3.26. RE: LIGHTER PHANTOM ENGINE. X.8840 X.8060 X.8050 Referring to your memo. CJ11/E26.3.26 we have a scheme nearly completed for the cylinders and valve… | ||
| scan0334 | Use of a larger diameter duralumin valve push rod for the lighter Phantom engine. | ||
| View original record | To R. from E: Copy to BJ. " HS. " BY. X8050 E1/M23.4.26. LIGHTER PHANTOM VALVE TAPPET HOLES -X.8060. We have sent a drawing to Derby -LeC 2236, to which we attach a blue print herewith, shewing a… | ||
| scan0335 | Modifications and tests for a lighter Phantom engine, focusing on weight reduction and a new anti-detonating head. | ||
| View original record | 48050 To Hs. } FROM R: BY. } c. to BJ. Wor. R5/M4.5.26. LIGHTER PHANTOM ENGINE. X.8840 X.8030 X.8770 X.8050 Allow no expense to be put on this engine that is not suitable for the anti-detonating head.… | ||
| scan0336 | Investigation into 'engine thuds' on the Phantom engine compared to the Silver Ghost. | ||
| View original record | To B.J. from Hs. c. to CWB. c. to H. X 8050 Hs3/LGS.5.26. ENGINE THUDS. (EJS/EG.5.26.X417) For some time now we have asked the Production Test Dept. to let us have an opportunity of investigating a… | ||
| scan0337 | The occurrence of engine thuds, requesting an example be set aside for experimental study. | ||
| View original record | S/W. Hs. Copies to:- EP. JLE. CWB1/GM/17-5-26. Engine thuds. Reference Hs3/LG8526. I will bring to your notice any good examples of this feature which arises. So far I am glad to say that the feature… | ||
| scan0338 | Definition and cause of 'engine thuds' in various car models, particularly the Phantom and Silver Ghost. | ||
| View original record | W/S CWB c. Hs. c. JLE. Lillie Hall. 48050 EP4/H19.5.26. re. Engine Thuds. Reference Hs3/LG8.5.26. With reference to your CWB1/GM17.5.26. I am afraid there may be some misunderstanding as to what is… | ||
| scan0339 | Characteristics and naming of an engine thud, suggesting it be called a throb or 'the Gilpin' trouble. | ||
| View original record | S/W. E.P. Copy to Hs. Hs. x8050 CWB4/GM/21-5-26. Engine thuds. Reference Hs3/LGS526. With reference to EP4/H19526 on the above subject it is probably that, what I have described as a thud would be… | ||
| scan0340 | Engine thuds and a throbbing sensation in vehicle 87-LC, while also arranging a visit to Derby. | ||
| View original record | W/S CWB c. Hs. X.8050? EP5/H22.5.26. re. Engine Thuds. Reference Hs3/LG8.5.26. With reference to your CWB4/GM21.5.26. I wrote you yesterday with regard to 87-LC, which I still feel suffers from the… | ||
| scan0341 | Design changes to the Phantom Aluminium Cylinder Block, including increasing its height. | ||
| View original record | To BY. from E. c. to BJ. Hs. X8050 E1/M7.6.26. RE. PHANTOM ALUMINIUM CYLINDER BLOCK. X.8050 X.2917 On reading your weekly report which mentions the position of the various parts of the lighter… | ||
| scan0342 | Instruction memo detailing the testing process for new copper asbestos cylinder gaskets for the New Phantom engine. | ||
| View original record | 48050 Mt. Sft. Hs. RMC. Mr. Order Office. BY4/H. 28.6.26. RECEIVED 24 JUN 1926 Hs NEW PHANTOM CYLINDER GASKETS. ----------------------------- In regard to an arrangement made with Messrs rayens, who… | ||
| scan0343 | Procedure for fitting and testing new Phantom cylinder gaskets. | ||
| View original record | X8050 By: [Illegible] c Hs. c RHO c Order Office. c Sfb from Mx. Hx1/T29.6.26. [STAMP: RECEIVED 24 JUN HS] NEW PHANTOM CYLINDER GASKETS. Replying to your memo BY4/H28.6.26 the methods we adopt for… | ||
| scan0344 | Modifications to the cylinder head water outlet for the Lighter Phantom Engine. | ||
| View original record | X8050 To BY. from E. C. to BJ. Hs. E3/M6.7.26. LIGHTER PHANTOM ENGINE - X.8050. Referring to the scheme you sent us for the cylinder head water outlet made in aluminium, we send you herewith drawing… | ||
| scan0345 | Design alternatives for a lighter valve rocker cover for the Phantom engine, comparing a two-piece pressed and riveted design against a magnesium alloy casting. | ||
| View original record | To BY. from E. c. to BJ. Hs. X 8050 E1/M6.7.26. LIGHTER PHANTOM ENGINE. X.8090 X.8060 VALVE ROCKER COVER - SCHEME 763. X.8840 X.8050 The scheme for the lighter cover that we have had up till now does… | ||
| scan0346 | Confirming satisfactory testing of new Phantom cylinder gaskets and suggesting further orders. | ||
| View original record | X8050 By... c Hs c... Order Office ... from Mr. Mx20/F8.7.25. NEW PHANTOM CYLINDER GASKETS Confirming my telephone conversation with you today, we have now tried a number of these Gaskets, and have… | ||
| scan0347 | Telephone conversation regarding modifications and tests on engine components like liners, valves, and a Phantom cylinder block. | ||
| View original record | X8050 To RG. from Hs/Rm. c. to EY. c. to Hs/VH. Hs/Rm5/LGIO. 8.26. X3866 We received a telephone message from R. this morning stating that he wished liners to be tried threaded right up to the top at… | ||
| scan0348 | Proposed modifications to the Phantom engine's induction pipes, manifold, and other components to improve performance. | ||
| View original record | To Hs/ACL. from R. c. to BJ. RG. +8050 R1/M30.8.26. PHANTOM INDUCTION PIPES ETC. X.8070 X.8050 X.8080 We are very pleased with the progress you are making. Cold distribution is in all our engines… | ||
| scan0349 | Production status of the Lighter Phantom engine with aluminium cylinders. | ||
| View original record | To Hs. from R. c. to BJ. Wor. BY. X8051 R5/M31.8.26. RE. LIGHTER PHANTOM. X. 8770 X. 8840 X. 8051 X. 8070 We have been anxiously awaiting for many months the production of the Phantom engine with… | ||
| scan0350 | Technical memo detailing an experiment to measure Phantom engine cylinder wall temperatures using nickel-iron thermocouples. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X8050 Hs/ACL1/LG5.10.26. PHANTOM CYLINDER WALL TEMPERATURE. X1643 During some experiments in connection with over-oiling we took… | ||
| scan0351 | Test report detailing temperature readings taken from a cylinder wall using a thermocouple setup. | ||
| View original record | contd :- -2- ARRANGEMENT OF THERMO COUPLE. Diagram Labels: CYL. WALL, Ni, Fe, GALVANOMETER, THERMOMETER, COLD JUNCTION Temperature readings were taken at the following places :- A. 1.875" from the top… | ||
| scan0352 | Engine temperature and compression ratio tests on the Phantom and Falcon X engines. | ||
| View original record | contd :- -3- min/sq.in. we should expect the temperature of the other side of the walls to only be about 3°C higher. With regard to compression ratio it is not expected that a reasonable increase… | ||
| scan0353 | Cylinder and liner temperature tests on the lighter Phantom engine, prompted by issues on the Falcon X engine. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X8050 Hs/ACL1/LG18.10.26. LIGHTER PHANTOM ENGINE. X 8840 X8866 CYLINDER AND LINER TEMPERATURE. In view of piston ring carbonising trouble… | ||
| scan0354 | Technical note detailing the placement and testing of couples on the pressure side of a cylinder bore. | ||
| View original record | contd :- -2- Six couples were used altogether on the pressure side of the cylinder bore and a sketch shews the position of these couples. It will be seen that the top position is just below the level… | ||
| scan0355 | Cylinder temperature tests, comparing liner and cylinder wall temperatures at different speeds and B.M.E.P. | ||
| View original record | contd :- -3- The appended curves are the results and shew the temperature of the top of the liner and cylinder wall for the different speeds also the B.M.E.P. developed at the time. From these curves… | ||
| scan0356 | Engine tests investigating pre-ignition and the effect of reduced oil flow on component temperatures. | ||
| View original record | contd :- -4- drop in power. The pre-ignition was not as severe as we have experienced and gave no popping back in the carburetter. With pre-ignition the top of the liner temperature rapidly increased… | ||
| scan0357 | Test report summary on cylinder liner temperatures, the effects of oil cooling, and pre-ignition on an engine. | ||
| View original record | contd :- -5- The chief thing this latter test proves is that the cyl. skirts are cooled to a certain extent by the oil spray as would be imagined. SUMMARY. (1) Up to the present after 39 hrs. running… | ||
| scan0358 | Blueprint with graphs showing liner temperatures for a Lighter Phantom Engine under various conditions. | ||
| View original record | LIGHTER PHANTOM ENGINE. LINER TEMPERATURES TOP GRAPH: TEMPERATURES AT 1.5" FROM TOP OF CYL. FULL LOAD Y-AXIS (LEFT): TEMP °C X-AXIS: R.P.M. Y-AXIS (RIGHT): B.M.E.P. PLOT LINES: LINER TEMP, ALUM CYL… | ||
| scan0359 | Confirming a suggestion to use a single lip on the Lighter Phantom cylinder head to improve turbulence. | ||
| View original record | To Hs. from E. c. to BJ. X8050 E2/M28.10.26. RE. LIGHTER PHANTOM CYL. HEAD. X.8050 X.3867 This note is to confirm our suggestion to use one lip only on the turbulent head to give single flow… | ||
| scan0360 | Experimental shrunk steel sleeve on a 'Phantom' cylinder, stressing the need for official testing before use on customer cars. | ||
| View original record | BY. C. to Hs. C. to Mx. X8050 Hm8/D17.1.27. Re Shrunk Steel Sleeve on 'Phantom' Cylinder. (Ex Chassis No.57-SC. - Hough). Ref. BY23/H.13.1.27. We do not consider the position of this experiment is… | ||
| scan0361 | Improvement to Phantom Cylinders to reduce engine knock. | ||
| View original record | X.8050 Hs RECEIVED JAN 19 1927 From Mr. Hs6/M18.1.27 re Phantom Cylinders. Hs6/D17.1.27. The thickened cylinder projection effected a 75% to 80% improvement on engines suffering from this particular… | ||
| scan0362 | The performance of Phantom cylinders with an extended bore, focusing on piston knock and bedding procedures. | ||
| View original record | Hs. By Wor. c Sft. from Mx. /8050 Mx5/T12.4.27 PHANTOM CYLINDERS WITH APPROX. .5 EXTENSION TO BORE. We have now fitted 4 sets of these to engines on chassis, and in every case they have proved… | ||
| scan0363 | Cable about the cause of cylinder knocking in Phantom cylinders. | ||
| View original record | X8050 Hs. Sft. Mx. BYLL/H. 18.5.27. RECEIVED MAY 19 1927 PHANTOM CYLINDERS. I have received the following cable from Oy. in which he points out that they are of the opinion that the cylinder knocking… | ||
| scan0364 | Requesting cylinder block drawings for a revised Phantom dry liner aluminium engine and discussing variable compression ratios. | ||
| View original record | BY. from E. c. to BJ. Hs. X8050 E2/M1. 6. 27. PHANTOM - REVISED DRY LINER ALUM: X. 8770 ENGINE. X. 8050 We send you herewith print Lec. 2421 shewing preliminary scheme for the above. We should be glad… | ||
| scan0365 | Improvements to Phantom cylinder blocks to avoid bore distortion and consequent piston knocks. | ||
| View original record | To BY. from E. c. to BJ. Hs. Y8050 E2/M25.6.27. PHANTOM CYL. BLOCKS. X.8030 Y8050 X.5030 We send you herewith LeCs. 2428/9 dealing with improvements to the Phantom cyl. blocks to avoid distortion of… | ||
| scan0366 | Outlining the policy for modifications to the Phantom model, focusing on a lightened version with a turbulent head. | ||
| View original record | X8050 To BY. from E. c. to BJ. Hs. E2/M20.7.27. LIGHTENED PHANTOM WITH TURBULENT HEAD. X. 8050 X. 8080 Referring to your report BY1/H16.7.27., the policy for the modifications to the Phantom now is :-… | ||
| scan0367 | Blueprints and modifications for cylinder head and piston designs on Blue Sports Chassis. | ||
| View original record | To BY. from E. c. to BJ. Hs. +8050 E1/M16.8.27. RE. BLUE SPORTS CHASSIS. X.8774 X.8050 X.8040 We thank you for blueprints received in response to our request for detail drgs. of the cyl. head and… | ||
| scan0368 | Modifications to the Phantom cylinder block to reduce distortion and piston knock. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to BY. OY. c. to BA. X8050 Hs/ACL2/LG26. 8. 27. MODIFICATIONS TO REDUCE PHANTOM CYLINDER BLOCK DISTORTION. X9190 The modification to the Phantom cyl.… | ||
| scan0369 | Drawings for the Phantom Sports Engine crankcase, cylinder blocks, and valve gear. | ||
| View original record | To BY. from E. c. to BJ. HS. +8050 E1/M31.8.27. PHANTOM SPORTS ENGINE. X. 8774 X. 8000 X. 8060 X. 8050 We send herewith drgs. LeC. 2421 and 2454 shewing various information regarding the crankcase,… | ||
| scan0370 | Successful 1000-mile test of honed cylinders on a Phantom car and their proposed use in standard production. | ||
| View original record | To Wor. from Hs. c. to BY. Hy. c. to Mx. X.8050 HONED CYLINDERS FOR KAK PHANTOM. X.8050 We have run a set of honed cyls. for 1000 miles on a Phantom car - they are perfectly satisfactory. We see no… | ||
| scan0371 | Modifications to the Phantom cylinder block and valve gear for the sports chassis. | ||
| View original record | BY. from E. c. to BJ. Hs. X8050 E1/M24.9.27. PHANTOM CYL: BLOCK AND VALVE GEAR FOR SPORTS CHASSIS. X.8050 X.8060 X.8774 We send herewith LeC.2464 shewing the above. You will require a new camshaft and… | ||
| scan0372 | The scheme for doweling cylinder blocks on a sports chassis engine. | ||
| View original record | BY. from E. c. to BJ. Hs. X. 8050 E2/M24.10.27. EAC.14 We send you herewith LeC.2481., shewing the scheme for doweling the cyl. blocks on the sports chassis engine. The rear cyl. block should be… | ||
| scan0373 | Potential solutions for vehicle acceleration and engine improvements, considering superchargers, gearboxes, and cylinder counts. | ||
| View original record | To B.J. from R. c. to BY. Hs. CHASSIS PROBLEMS. ACCELERATION FOR PASSING. X.523 X.8420 X.1725 X.8050 There is an increasing demand for more rapid acceleration, but which cannot be met with a lower top… | ||
| scan0374 | Request to produce an aluminium cylinder head for the Phantom and to prepare drawings for cast iron cylinder blocks. | ||
| View original record | [strikethrough]To BY/CS.[/strikethrough] c. to HS. X8050 BY/SS1/DB.22.11.27. Re Phantom - Aluminium Cylinder Head. Will you please put in hand an aluminium cylinder head similar in all respects to… | ||
| scan0375 | Over-oiling issues in honed cylinders for the Phantom engine, detailing the failure of square section rings and their replacement. | ||
| View original record | NOT by Hs. X8050 Mx/McM14/T6.12.27 Honed Cylinders for Phantom. Hs2/LG22.9.27. EvG/LG22.9.27. The engines fitted with honed cylinders and pistons having square section rings, have not been very… | ||
| scan0376 | Letter discussing issues with cold knocking in Phantom engines and potential solutions. | ||
| View original record | X8050 POST 15 DEC 1927 RECEIVED IFW OY2.R.12.6.27 December 6th, 1927. Mr. Basil Johnson, Rolls Royce Ltd., London, England. (Copy for attention Mr. E.W. Hives) Dear Mr. Johnson: RE: CYLINDERS -… | ||
| scan0377 | Page 2 of a letter regarding claims of engine improvements by directing water at valves and exhausts. | ||
| View original record | - 2 - (2) Since the water is directed straight at the valves and exhaust outlets, the claim is made that one obtains - Cooler valves. Reduced tendency to pop back and fire after switching off and -… | ||
| scan0378 | Proposal for modifying the cooling system by supplying water directly to the cylinder head. | ||
| View original record | DRAWING NO. S.K. 165 SEE ALSO THE FOLLOWING OPERATION DRAWINGS U322 U321 BRASS NOZZLES IN CYLINDER TO BE REMOVED AND POSSIBLY ADDITIONAL WATER HOLES DRILLED TO GIVE FREER PASSAGE OF WATER TO CYLINDER… | ||
| scan0379 | Clarifying a misunderstanding regarding a recommendation for shrinking steel rings onto Phantom Cylinders. | ||
| View original record | Sft. BY. Hs. X8050 Hm7/EW13.12.27. Sft16/EMM12.12.27. Apparently owing to a misunderstanding you have credited us with putting forward the recommendation in the matter of shrinking steel rings on to… | ||
| scan0380 | Chasing up instructions for a pair of modified Phantom Cylinder Blocks. | ||
| View original record | C O P Y. Hm. Sft16/EMM12.12.27. You will remember that some time ago I spoke to you about a pair of phantom Cylinder Blocks which have had steel rings shrunk on to the trunk extensions - this was… | ||
| scan0381 | Reuse of reinforced cylinder blocks from customer cars to address knocking complaints. | ||
| View original record | Sft. (crossed out) c. Hm. (crossed out) c. Hs. X8050 BY2/G.14.12.27. CYLINDER BLOCKS. -------------- Referring to the question of the disposal of cylinder blocks, which were dismantled from a… | ||
| scan0382 | Requirement for altered cylinder blocks to be tested by the Experimental Department before being stocked or supplied to customers. | ||
| View original record | BY. C. to Sft. C. to Hs. X8050 Hm7/EW15.12.27. Re - Cylinder Blocks. When this was originally discussed between ourselves and the Experimental Department, it was considered that before such an… | ||
| scan0383 | Instruction to permanently modify the pattern for a Sports Phantom cylinder head to alter the compression ratio. | ||
| View original record | Y8050 C. Hs. BY/SS5/K. 29. 12. 27. SPORTS PHANTOM CYLINDER HEAD --------------------------- Will you please instruct the Pattern Shop to permanently modify the pattern for cylinder head E.76656 (5 to… | ||
| scan0384 | With a sketch discussing design modifications and compression ratios for a 40/50 HP chassis aluminium cylinder head. | ||
| View original record | Hs. C. BY/CS. X8050 BY4/K. 22. 3. 28. 40/50 HP CHASSIS ALUMINIUM CYLINDER HEAD. In the early development of the aluminium cylinder head you requested low compression pattern to be prepared so that it… | ||
| scan0385 | Design of exhaust and inlet valve guides for the Phantom Aluminium Head. | ||
| View original record | BY. from E. c. to BJ. Hs. X 8050 E2/M23.3.28. PHANTOM ALUMINIUM HEAD. X. 7060 Lec. 2464. X. 8050 X. 8060 X. 7050 X. 289 In reply to your BY8/G20.3.28., our requisition is founded on the EAC.14 and… | ||
| scan0386 | Suggestion to improve iron castings by adding nickel and chromium for use in car cylinders and flywheels. | ||
| View original record | BY. HL. from R. c. to BJ. Wor. c. to RG. Hs. x8050 R1/M23.5.28. IRON CASTINGS. X.5050 X.7050 X.8050 Many people seem to be adding nickel and chromium to iron castings to increase their strength,… | ||
| scan0387 | Laboratory memorandum on the effects of adding Nickel and Chromium to iron castings for components like cylinder blocks. | ||
| View original record | [Illegible text] C-W-D Dept. Mr. Hs. H13/KA25.5.23. Laboratory. [Handwritten and crossed out: X8050] Re Iron Castings - Your Ref. RL/M23.5.28. ---------------- Our experiments indicate that additions… | ||
| scan0388 | Request to produce a cast iron version of a turbulent cylinder head for testing, to resolve issues with the aluminium version. | ||
| View original record | R.H.C. c. BY/SS. c. H.S. X8050 BY9/G.18.7.28. PHANTOM CYLINDER HEAD. ----------- Will you kindly produce a casting from the present turbulent head in cast iron instead of aluminium. We appreciate that… | ||
| scan0389 | Need to increase the size of the oil supply pipe for extra cylinder lubrication on the 40/50 HP chassis. | ||
| View original record | BY/CS c. Hs/Rm. +8050 BY4/G.22.1.30. 40/50 HP. CHASSIS - EXTRA CYLINDER LUBRICATION. The Experimental Department inform me that the main oil supply pipe for the above is quite inadequate, and we must… | ||
| scan0390 | The optimal pipe size for extra cylinder lubrication on a 40/50 HP chassis. | ||
| View original record | x8050. BY. From HS/Rn. HS/Rn.3/MJ.22.1.30. 40/50 HP. CHASSIS - EXTRA CYLINDER LUBRICATION. With reference to By4/G22.1.30. We think that the biggest pipe which we could use for the extra oil to the… | ||