Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Letter from accessories supplier DESMO to Rolls Royce regarding a modified cover, on a letterhead that doubles as a product catalogue. | ||
| View original record | Directors: R. G. RICHARDS. T. E. SELLERS. H. CLAYTON WRIGHT. Cables: A.B.C. 5th Edition. Bentley's Motor Trade. Telegram Code and Private. Telephone: CENTRAL 6547 (4 Lines) Pte. Bch. Ex. Telegrams:… | ||
| Scan002 | Catalogue page illustrating various 'DESMO' brand car accessories and parts. | ||
| View original record | DESMO WE ILLUSTRATE AND BRIEFLY DESCRIBE A FEW OF THIS COMPANY'S SUCCESSES. THERE ARE MANY OTHERS, PARTICULARS OF WHICH WILL GLADLY BE FORWARDED UPON APPLICATION. STEP MATS. "DESMO" STEP MATS have… | ||
| Scan003 | Letter to Desmo Ltd. regarding the despatch of a steering joint needed for creating a rubber mould. | ||
| View original record | CERTIFICATE OF INSPECTION BY A.I.D. ROLLS-ROYCE ENGINES AND SPARES x3/x94 Expl: Dept: Hs/Rml/LG. 1st. Mar. 1927. Messrs. Desmo Ltd., Desmo House, 31 Stafford St., Birmingham. Dear Sirs, We have… | ||
| Scan004 | Informational pamphlet contrasting grease and grit, and introducing the 'DESMO FLEXI LUBRI COVER'. | ||
| View original record | Grease or Grit Please File Y3494- Hitherto The problem of maintaining perfect lubrication of exposed moving parts of Motor Cars and Motor Cycles retaining grease and excluding grit has remained… | ||
| Scan005 | Promotional leaflet for 'Desmo Flexi' rubber covers for exposed vehicle joints. | ||
| View original record | The DESMO FLEXI for exposed joints Ninety per cent. of the wear on exposed joints of Motor Cars and Motor Cycles is due to the rubbing and grinding effect of road grit that has adhered to the grease… | ||
| Scan006 | Letter from Desmo Limited regarding the design of Flexi Lubri-Covers for steering joints. | ||
| View original record | Telephone: CENTRAL 6547 (4 lines) Pte. Bch. Ex. Telegrams: "DESMO, BIRMINGHAM." Cables: A.B.C. 5th Edition, Bentley's, Motor Trade Telegram Code and Private Directors: R. G. RICHARDS. T. E. SELLERS.… | ||
| Scan007 | Letter from Desmo regarding the despatch of two oil-resisting rubber Lubri-Covers for testing. | ||
| View original record | Telephone : CENTRAL 6547 (4 lines) Pte. Bch. Ex. Telegrams : "DESMO, BIRMINGHAM." Cables : A.B.C. 5th Edition, Bentley's, Motor Trade Telegram Code and Private. X34894 DESMO LIMITED "DESMO HOUSE" 31… | ||
| Scan008 | Request to test the stiffness of an American type Bulge rubber coupling. | ||
| View original record | To RHC. from Hs/Rn. Y3494 Hs/Rnl/LG5.10.28. We wish to test the stiffness of the American type Bulge rubber coupling. Will you therefore please have the standard plates rivetted on to the attached… | ||
| Scan009 | Bending of silencer outlet pipes on cars during testing. | ||
| View original record | Hs. from EP. C. to EH. C. to BY. C. to DA. X3486 EPL1/F11.2.20. Re. Silencer Outlet Pipes. I am rather concerned lately to note that several of these pipes on cars on test have become bent, causing… | ||
| Scan010 | Issue of rear brake ropes rubbing against the silencer. | ||
| View original record | x3436 AT BY. c. to Da. c. to Hs. c. to BA. EP6/F18.3.20. RE. CLEARANCE OF SILENCER AND BRAKE ROPES. We find that without any load on the chassis the rear brake ropes invariably rub on the silencer.… | ||
| Scan011 | Design of a swan-neck exhaust pipe and silencer elbow. | ||
| View original record | X3436 To Bn. from Da. c. to Wd. Dall/CB29.3.20 X.4072. RE SILENCER ELBOW. E.2240. X.3642. X.3436. Replying to your Bn1/W25.3.20m the new design of stamp flange was made use of in connection with the… | ||
| Scan012 | The approval and progress of Silencer Elbow E.2240. | ||
| View original record | To Hs. fro, Bn. c. to Da. c. to Wd/Ms. x3436 C-OPY. Bnl/W30.3.20. X.13642. RE SILENCER ELBOW E.2240. X.3436. Please see attached Dal1/CB29.3.20, Wd1/Ms 12/FJ24.3.20., note from Mr. Bullough dated… | ||
| Scan013 | Suggestion to manufacture elbows from stampings welded together, instead of casting, due to poor quality. | ||
| View original record | X.3436 COPY. (attached to Bu/W3037) To Mr. Wormald. 22.3.20. X.3436 RE E.2240. Elbows. I would like to suggest that if possible this piece be made from stampings instead of at present cast. It looks… | ||
| Scan014 | Manufacturing difficulties with steel castings for the Silencer Elbow E.2240 and proposing an alternative. | ||
| View original record | (attached to P.W./w. 30.3.20) x3436 COPY. Bn. Wd/Ms/12/FJ24.3.20. X.3642 Re Silencer Elbow E.2240. X.3436. We are experiencing considerable trouble in obtaining satisfactory steel castings of the… | ||
| Scan015 | Status update on the design modification for Silencer Elbow E.2240. | ||
| View original record | X3436 (attached to Bn/W 30.3.20) To Wa. for Ms. from Bn. c. to Da. Bn/W25.3.20. RE SILENCER ELBOW E.2240. X.3436. With reference to WdZMs12/FJ24.3.20, passed herewith to Da., together with note from… | ||
| Scan016 | Petrol tank solder melting due to heat from the exhaust pipe, particularly during dynamometer testing. | ||
| View original record | X.3486 By. from EP. c. to Hs. c. to Bn. c. to EFC. EP/T13/F5.5.20. X.3451. X.3436. RE SOLDER OF PETROL TANKS AFFECTED BY HEAT OF EXHAUST VALVE. We have had several cases where leakage from the petrol… | ||
| Scan017 | Remedy for issues with petrol tanks during dynamometer testing using asbestos. | ||
| View original record | X.3436 EP. from By. c. to Ms. c. to EFC. c. to Bn. By7-P8.5.20. X.3451. CHASSIS - PETROL TANKS. X.3436 Referring to your memo EP/T13/F5.5.20, unquestionably the remedy for the trouble which occurs… | ||
| Scan018 | Sample silencer from the Aymard Co. of Ipswich, detailing its advantages. | ||
| View original record | X.8436 COPY. To HS. from Da. (text crossed out) c. to EFC. Da5/CB10.5.20. X.4058 (text crossed out) RE SILENCERS. X.8436. We are sending you a sample silencer from the Aymard Co., of Ipswich. This is… | ||
| Scan019 | Issues with overweight and unsound steel castings for an exhaust nozzle and engine foot, proposing a revised design using forgings. | ||
| View original record | [Handwritten top center, underlined: X3486] R8/G15.5.20. To By. from R. Copy to C.J. " " Bn. " " Da. " " Oy. " " Hs. [Handwritten next to Hs.: X.3486] [Underlined: RE STEEL CASTINGS.] [Handwritten to… | ||
| Scan020 | Testing alternative materials like malleable iron, bronze, and aluminium for components, and the design of an exhaust pipe nozzle. | ||
| View original record | Contd. -2- mechanical strength and this is very important. I believe also it would be quite satisfactory in malleable iron, and might even be satisfactory in aluminium, and Mr. Hives was asked to get… | ||
| Scan021 | Manufacturing methods for an exhaust fitting, comparing hand-making, pressing, forging, and various welding techniques. | ||
| View original record | Contd. -3- attempts, and it was a great surprise to me that this scheme had been abandoned because the fitting could quite well even be made by hand in the sheet metal working shop, until punches and… | ||
| Scan022 | Instructions on the design and manufacture of a steering box boss and a silencer outlet pipe nozzle for a 40/50 HP model. | ||
| View original record | X.3436 To Hs., Da, and By. -2- El/@18.5.20. Contd. The steering pad for carrying the steering box should be carried by a special boss provided on one of the foot brackets, and should be secured by… | ||
| Scan023 | Design notes and sketches for an exhaust silencer snout and cut-out flange. | ||
| View original record | To Hs, Da, and Ry. -3- E1/G18.5.20. Contd. The assembled silencer snout should be secured to the exhaust pipe by welding in the usual manner round the end, and should be additionally secured top and… | ||
| Scan024 | Modified design of a Swan-neck silencer outlet pipe using a steel stamping, approved for experimental use. | ||
| View original record | X3436 To By. from Da. Copy to Hs. c. to RHC. c. to EFC. Dal/CB19.5.20. X.3419a. RE SILENCER OUTLET PIPE. X.3436. Please receive herewith a print of "N" Sch. 345 shewing the modified design of… | ||
| Scan025 | Decision to discontinue the use of specific steel castings on the chassis. | ||
| View original record | R.R. 235 a (100 T) (S.F. 846 6-8-19) G. 2460 X3436 + BY3-P22.5.20. No. from BY. c. Bda. c. Hs. ___ X3436 STEEL CASTINGS USED ON CHASSIS. X3669 X3692 ----------------------------------- Mr Royce has… | ||
| Scan026 | Four design options for an exhaust pipe nozzle and requesting that experimental sets be made. | ||
| View original record | X.3486 To BY. from DA/P. c. to HS. c. to HC. c. to TB. C to EFC DA/P1/CB26.5.20. X.4072 - Exhaust Fittings X.3486 In accordance with Mr. Day's instructions, I send you herewith drawing No. N.sch:366… | ||
| Scan027 | Observations and required fixes for a vehicle's tyres, battery, dynamo, carburettor, engine, and exhaust. | ||
| View original record | Contd. X 3436 Chassis^2 - 1EX R24/HO.8.20. X.3763 - You will remember I strongly advocated well pumped tyres for Isle of Man TT 1906, to get low petrol consumption. X.607. X.3014b. X.3763b. The… | ||
| Scan028 | Results of a power test comparing two different sized copper asbestos washers for the throttle chamber joint. | ||
| View original record | HS. c. to BY. X3436 FR EP/Mx1/F26.10.20. RE. COPPER ASBESTOS WASHER FOR THROTTLE CHAMBER JOINT. We have taken a careful power test on an engine to determine whether the 48 x 58 m/m washer specified… | ||
| Scan029 | Reporting trouble with the silencer nut working loose on experimental cars, suggesting a locking device be designed. | ||
| View original record | To Da. From Hs/TMW. X.3436 W X3436 Hs/TMW2/LG20.1.21. RE. SILENCER NUT. We are constantly having trouble on Experimental Cars with the Silencer Nut U.729 working loose, in some cases having gone so… | ||
| Scan030 | Loose silencer nut on experimental cars, suggesting a locking device as a solution. | ||
| View original record | X.3436 S.F.C. To Da. from Hs/TMW. Hs/TMW3/LG21.1.21. X.3436 RE. SILENCER NUT - U.1729. We are frequently experiencing trouble on Experimental Cars from the above Nut working loose. We suggest that a… | ||
| Scan031 | The swan neck of the exhaust pipe on the 40/50 chassis interfering with rear seats, causing a fire risk, and suggesting a new maximum projection of .375 inches. | ||
| View original record | To EV. from DA/EV. [EV. is struck through] Copy to HS./M.W. Copy to JWS. Copy to EFC. X3436 DA/EV1/OB24-1-21. ---------------- X.3436 RE SWAN NECK OF EXHAUST. 40/50 Chassis We are repeatedly informed… | ||
| Scan032 | Customer complaints about popping noises in the silencer. | ||
| View original record | R.R. 2350 (10 T.) (S.H. 988. 22/2/21.) Bm. 59887G. X3436 FR Hs. from EP. c.c. to By. c.c. to Ds. EP/T2/H24.5.21. Re Popping In Silencer. We are having quite a number of complaints of popping in… | ||
| Scan033 | Cause of popping noises in the silencer of 40/50 HP cars when the throttle is shut. | ||
| View original record | To R. from Hs. c. to CJ. c. to BN. c. to E. c. to Da. c. to BY. c. to EP. c. to EWT. for R.R.Inc. attention of OY. X3436 Hel/LGI.6.21. X.3436 - RE. POPPING IN THE SILENCER. X.4305 - We periodically… | ||
| Scan034 | The causes and testing of explosions in the silencer. | ||
| View original record | contd. -2- Hsl/LG1.6.21. positive cure for explosions in the silencer is to switch off both ignitions, but, of course, there is always the risk of the explosions taking place when they are switched on… | ||
| Scan035 | Tests to prevent explosions in the silencer by fitting a hot-spot near the carburetter. | ||
| View original record | Contd. -3- condition for drying the pipe, we get practically no explosions. It will be seen from our tests that it is difficult with our present cars to overcome this trouble. The obvious way to… | ||
| Scan036 | Follow-up letter from The Wolsey Engineering Co., Ltd. regarding a silencer sent for testing and a potential order. | ||
| View original record | X3436 TELEPHONE: IPSWICH 884. TELEGRAMS: PISTONS, IPSWICH. THE WOLSEY ENGINEERING Co., Ltd., Automobile Engineers, Incorporating AYMARD & Co., Sheet Metal Workers. Specialists in PISTONS and… | ||
| Scan037 | Issues with fitting exhaust boxes due to thermal expansion and contraction on chassis engines. | ||
| View original record | X3436 FR BY from EP c. to Hs. c. to E. RECEIVED EP10/H23.8.21. CHASSIS - re FITTING EXHAUST BOXES. X3436 We still continue to have trouble with the fitting of exhaust boxes on the chassis engines. The… | ||
| Scan038 | Scheme No.468 for exhaust fittings and listing the new parts required for a trial. | ||
| View original record | To Hs. [Strikethrough: c/o to Mr Halker.(Catalogue)] [Handwritten: Y.3436] BY/Shn1/DB.1.2.23. X.3436 - EXHAUST FITTINGS.(SEC:5230). We attach herewith a scheme No.468, generally approved by Mr Bailey,… | ||
| Scan039 | Scheme for a spring control for a butterfly valve on an exhaust pipe to avoid stickiness. | ||
| View original record | E. from Hs. Y3436 Hs4/LG7.2.23. SPRING CONTROL FOR BUTTERFLY VALVE ON EXHAUST PIPE. Y3436 This is the scheme suggested by R. in order to avoid any stickiness in the baffle in the exhaust pipe holding… | ||
| Scan040 | Modification to the exhaust choke valve control for the 40/50 chassis. | ||
| View original record | To By from E. c. to CJ. c. to Hs. c. to EP. X3436 E1/M22.2.23. 40/50 CHASSIS. EXHAUST CHOKE VALVE CONTROL. X.4305 X.3436 With reference to your scheme No.468, we have drawn over this a modification on… | ||
| Scan041 | Removal of copper asbestos washers in exhaust manifolds. | ||
| View original record | C O P Y. St. c. to H. EP/Thn6/H6.4.23. re. EXHAUST MANIFOLDS. With reference to your memo St2/TB/21.3.23, the copper asbestos washer which was introduced some considerable time ago, certainly pre-war,… | ||
| Scan042 | Exhaust manifolds for the 40/50 chassis, attaching a letter and reply. | ||
| View original record | (3436) Hs. EP/Thn5/H10.5.23. re. Exhaust Manifolds - 40/50 Chassis. I attach herewith copy of letter received from St. and copy of my reply, for your information. EP/Thn. | ||
| Scan043 | Recurring issues with the union between the exhaust manifolds and vertical pipes, including loose nuts and washer problems. | ||
| View original record | S/W EP. from St. copy to H. St2/TB21.3.23. With reference to the union between the two outlets of the exhaust manifolds and the vertical pipes. I have on several occasions recently met with trouble at… | ||
| Scan044 | Issues with the butterfly valve in the exhaust pipe, specifically seizing and rattling, and a proposal for design improvements. | ||
| View original record | X.3436. To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hsl/LG14.6.23. BUTTERFLY VALVE IN EXHAUST PIPE. X.3436. As it appears probable that we shall frequently use this fitting, we suggest that… | ||
| Scan045 | Standardisation of a modified control for the butterfly valve in the exhaust pipe. | ||
| View original record | R.R. 75a (5 M) (S.J. 19), 12-10-21: G. 3087. X3436 COMPLETED 28.6.23. STANDARDISATION of CHASSIS PARTS. Date 28.6.23. X No. 3436 Drawing No. Part List Description of Parts. Modified control for… | ||
| Scan046 | The failure of exhaust valves on post-war 40/50 HP cars. | ||
| View original record | X3436 R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. COPIES TO: RCJ WOR. By E Da EP OY Hm Expl. No. X3436 X.2764 REF. Hsl/LG15. 8. 23. OBJECT OF TEST. To find cause and cure for… | ||
| Scan047 | The failure of 40/50 exhaust valves, comparing post-war and pre-war designs and materials. | ||
| View original record | R.R. 403A (40 H) (SL 12 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hel/LC1S.S.23. 40/50 Exhaust Valves. There has been a number of failures of 40/50 Exhaust Valves. Samples of the… | ||
| Scan048 | Valve burning, investigating why post-war valves performed worse than pre-war designs. | ||
| View original record | R.R. 493A (60 H) (EL 4S 12-7-23). J.H., D. -2- EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hel/L/1013.8.23. burning the valve is when the tappet lifts the valve .017" off its seat. Under these conditions… | ||
| Scan049 | Engine valve performance, testing modifications to valve seat angle, head shape, and material. | ||
| View original record | R.R. 493A (40 H) (KL 42 12-7-23). J.H.D. -3- EXPERIMENTAL REPORT. Expl. No. 2764 REF: He1/2615.8.23. to the inclined seating it tends to lift the valve and neutralize the downward alongation of the… | ||
| Scan050 | Exhaust valve pre-ignition, comparing different valve shapes and recommending a return to pre-war specifications. | ||
| View original record | R.R. 493A (40 H) (EL 12 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: He1/LC1S.8.23. During our tests we proved that exhaust valves could be badly scaled, burnt and overheated by… | ||
| Scan051 | Tappet clearances necessary to ensure exhaust valve seating. | ||
| View original record | R.R. 405A (40 H) (EL 42 19-7-23). J.H. D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hel/LMS.8.23. best shape, and we should gradually weed the others out. Tappet clearances necessary to ensure exhaust… | ||
| Scan052 | Replacement of copper asbestos washers in exhaust manifolds. | ||
| View original record | S/W. EP. PN18/DN/2.8.23. In your EP/Thn6/H6.4.23, re: Exhaust Manifolds, you stated that the Experimental Dept. was giving the matter consideration as to whether the copper asbestos washers now in use… | ||
| Scan053 | Replacement of copper asbestos washers in exhaust manifolds to prevent blowing. | ||
| View original record | S/W. EP. FN18/DN/2.8.23. In your EP/Thn6/H6.4.23, re: Exhaust Manifolds, you stated that the Experimental Dept. was giving the matter consideration as to whether the copper asbestos washers now in use… | ||
| Scan054 | Exhaust manifolds for the 40/50 Chassis. | ||
| View original record | Hs. x3436 EP/Thn7/H22.8.23. re. Exhaust Manifolds - 40/50 Chassis. Under cover of our EP/Thn5/H10.5.23, we sent you a copy of a memo from St. reference St2/TB21.3.23 together with copy of our reply.… | ||
| Scan055 | Exhaust manifolds for the 40/50 chassis being forwarded to the Experimental Department. | ||
| View original record | To. No. X3436 COPY. W/S: PN. EP/Thn8/H22.8.23. re. Exhaust Manifolds. 40/50 Chassis. ------------------------------------- With reference to your PN18/DN2.9.23 - we have passed this memo to the… | ||
| Scan056 | Issues with the exhaust manifold to vertical pipe union, specifically the removal of a copper and asbestos washer. | ||
| View original record | St2/TB/21.3.23 S/W. E.P. from St. copy to H. With reference to the union between the two outlets of the exhaust manifolds and the vertical pipes. I have on several occasions recently met with trouble… | ||
| Scan057 | Instructing the stores to hand over calorized 40/50 HP chassis exhaust components and a Condor manifold for testing. | ||
| View original record | Hs. c. to By. c. to Rg. X3486 Wd/Dnl/FH15.1.24. Please note that we have instructed the Stores to hand to your Dept. 3 sets of 40/50 HP. Chassis Exhaust Boxes and Down Takes. These have been returned… | ||
| Scan058 | Links and spring loading for an exhaust choke valve spring on a 40/50 HP chassis. | ||
| View original record | To Hs. c.c. to WHo? [strikethrough] N34/3b BY/SS1/DB.21.2.24. Re 40/50 HP Chassis - Exhaust Choke Valve Spring E.22678. With reference to your remarks re the above, we suggest you try out links… | ||
| Scan059 | Instruction sheet detailing specifications for a 40-50hp exhaust choke valve spring. | ||
| View original record | RRG (1500H) (OHS40 1-12-23)MP 203179 X3436 ROLLS-ROYCE LTD. INSTRUCTIONS. To: Mr Hives 21/2 1924 Order No. Customer's No. Re 40-50 Exhaust choke valve spring. Mr Shelton has agreed to the link having… | ||
| Scan060 | Recommendation to alter a wire link for the exhaust choke valve to reduce accelerator pedal pressure on the 40/50 chassis. | ||
| View original record | BY/SS. from Hs. V3436 Hs1/LG21.2.24. 40/50 CHASSIS - EXHAUST CHOKE VALVE SPRING E.22678. EP. has complained that the pressure required to operate the accelerator pedal is considerably greater on the… | ||
| Scan061 | Reducing heat from exhaust boxes on the 40/50 chassis by lagging them with asbestos and planished steel. | ||
| View original record | B.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. X3436 REF:Hs12/LG22.2.24. To R. from Hs. c. to CJ. RG. c. to DA. E. c. to BY. EP. c. to Wor. 40/50 CHASSIS. HEAT FROM EXHAUST… | ||
| Scan062 | Horsepower figures for a 40/50 HP engine with various exhaust pipe configurations. | ||
| View original record | To R. from Hs. c. to CJ. RG. c. to E. DA. c. to BY. Wor. X3436 40/50 H.P. X3056 (crossed out) X3436 HS5/LG1.4.24. We attach sheet giving H.P. figures taken on a 40/50 HP. engine with the present… | ||
| Scan063 | Horsepower losses in the W.W. and Derby exhaust systems compared to the standard 40/50 system. | ||
| View original record | POWER LOSSES TO EXHAUST SYSTEMS WITH THE W.W. AND DERBY SCHEMES ON THE STANDARD 40/50 The following figures give the loss in H.P. of the two schemes relative to the standard 40/50 system. The tests… | ||
| Scan064 | Tests of a modified exhaust system to be used on EAC.111. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H. D. [Handwritten]: Y32136 EXPERIMENTAL REPORT. COPIES TO: R.CJ. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. [Handwritten]: X9230 [struck through] X4580 REF.… | ||
| Scan065 | The comparison of three exhaust systems for the standard 40/50 HP engine. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H. D. (1) EXPERIMENTAL REPORT. Expl. No. REF: He/ACL/5.4.24. COMPARISON OF EXHAUST SYSTEMS ON STANDARD 40/50 HP. ENGINE. Tests were made to compare the following… | ||
| Scan066 | Table detailing exhaust system tests, comparing power output (B.HP) and power loss for various systems relative to a standard system. | ||
| View original record | (2) EXHAUST SYSTEM TESTS - POWER OUTPUT OF STD. SYSTEM AND LOSS IN B.H.P. OF THE OTHER SYSTEMS RELATIVE TO STANDARD SYSTEM. | R.P.M. | B.H.P. with std. exh. system. | Loss in B.H.P. relative to std.… | ||
| Scan067 | Indicator work performed on different exhaust systems. | ||
| View original record | R.R. 493A (40 H) (SL 42 19-7-23). J.H., D. (3) EXPERIMENTAL REPORT. Expl. No. REF: Hs/ACL/5.4.24. INDICATOR WORK ON EACH SYSTEM. Light spring diagrams were taken of the exhaust and suction strokes at… | ||
| Scan068 | Recommendation to use bolted flange main silencer unions on future 40/50 HP designs instead of large screw nuts. | ||
| View original record | To E. from Hs. [Handwritten: 43436] Hs10/LG 12. 5. 24. 40/50 HP. RE. MAIN SILENCER UNIONS. [Handwritten: 4442 / 43436] We recommend that we adopt the bolted flange instead of the large screw nuts on… | ||
| Scan069 | Epidemic of complaints regarding rattles and exhaust blows from main silencer unions on 40/50 HP models. | ||
| View original record | N-W. EP. COPY. Br1/H2.5.24. TECHNICAL - 40/50 HP. RE. MAIN SILENCER UNIONS. We have had an epidemic lately of complaints about rattles and exhaust blows from the main silencer unions, several… | ||
| Scan070 | Customer complaints about sticking throttles on the 40/50 HP model. | ||
| View original record | 13436 EV c. Hs. Hm. EP1/H23.5.24. re. 40/50 HP. Sticking Throttles. Judging by the complaints received from customers, we appear to be having rather more trouble with the above since the fixing of the… | ||
| Scan071 | Query regarding the number of clips on exhaust silencers for 40/50HP 'U' & 'V' series chassis. | ||
| View original record | To Hs. 73436 BY/SS/DB.18.7.24. Re 40/50HP Chassis - "U" & "V" Series - Exhaust Fittings. Mr Coverley recently informed us that the cars running the Front Wheel Brake tests in France, were fitted with… | ||
| Scan072 | Merits of exhaust heated throttles over water heated ones, especially in winter conditions with poor fuel. | ||
| View original record | To CJ. from R. c. to BJ. PN. HS. BY. EP. H3436 R3/M18.8.24. RE. EXHAUST HEATED THROTTLES. X.2768 X.3436 X.4390 We are gradually making this system universal on our cars. PN. doubts if it is an… | ||
| Scan073 | Investigation of exhaust noise on a 40/50 HP model before making design changes. | ||
| View original record | X.3436 To Hs. from R. c. to BJ. BY. EP. R3/M8.10.24. RE. EXHAUST NOISE ON 40/50 HP. X.3436. With regard to BJ1/H1.10.24., before doing anything further to the design as it now stands, such as lagging… | ||
| Scan074 | Investigating exhaust noise on the 40/50 HP model. | ||
| View original record | R.R. 498A (20H) (D.A. 652 20-3-24) x.r.b. EXPERIMENTAL REPORT. To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to BY. WOr. c. to EP. Expl. No. REF: Hs2/LG29.10.24. Handwritten: X3436 EXHAUST NOISE ON… | ||
| Scan075 | Continuation page discussing the exhaust manifold for the 40/50 HP engine. | ||
| View original record | contd :- -2- exhaust manifold on the 40/50 HP. and making it so that the exhaust from No.1. cylinder can get away down the pipe without meeting the stream of exhaust from the other five cylinders. Hs. | ||
| Scan076 | Experiments and proposed modifications to reduce exhaust noise on a 40/50 HP car. | ||
| View original record | To B.J. from Hs. c. to PN. BY. c. to EP. MX. 43436 HsS/LG19.11.24. 40/50 HP. EXHAUST NOISE. X3436 We should like to know whether you are satisfied with the reduction in the exhaust noise on 11-AU car,… | ||
| Scan077 | Satisfactory exhaust silencing method, authorising the continuation of 40/50 chassis deliveries. | ||
| View original record | Hs. V3436 To Mr. Eur. from BJ. c. c. to Hs. c. c. to Mr. c. c. to Sh. c. c. to Sr. BJ/Py8/̶E̶E̶/D21.11.24. I am not sure whether you are holding up delivery of 40/50 Chassis with Open Bodies until you… | ||
| Scan078 | Query regarding the possibility of omitting the exhaust choke valve provided an ejector is fitted. | ||
| View original record | To Hs. from E. c. to CJ. /3436 E2/M8.12.24. RE. EXHAUST CHOKE VALVE. X. 8230 X. 3436 Would you kindly let us know if there is any prospect of being able to do without the exhaust choke valve connected… | ||
| Scan079 | Experiment to cure exhaust booming using a multi-tubular exhaust pipe. | ||
| View original record | Secret (31436) Hs. EP8/H16.3.25. EXHAUST BOOMS. The following may interest you, it being the experience of someone who considers they have cured certain cars of exhaust booming:- "A multi-tubular… | ||
| Scan080 | Overheating troubles in Australia, comparing single and two-branch exhaust systems on the 40/50 engine. | ||
| View original record | R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. Y3436 REF: Ha/Rn/L.C9.4.25. To EY. from Ha/Rn. c. to EP. c. to Sg. c. to EJ. OVERHEATING TROUBLES IN AUSTRALIA. Y3436 X766… | ||
| Scan081 | Diagnosing a potential overheating issue in a 40/50 HP car, possibly caused by a stuck exhaust butterfly baffle. | ||
| View original record | R.R. 493a (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs/Sn/LG.4.25. We are certain that had there been any difference which could have been noticed by a customer that we… | ||
| Scan082 | The overheating and boiling tendencies of the 40/50 HP model under various conditions. | ||
| View original record | R.R. 493a (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: Hs/Rm/LCS.4.25. (a) If a 40/50 fitted with a 2 1/4" matrix and no ventilation, is driven at full throttle, it will… | ||
| Scan083 | Power loss and overheating troubles caused by the exhaust butterfly throttle opening too late. | ||
| View original record | X. 3436 To RHC. from Hs/Rm. Hs/Rn2/LG24.4.25. EXHAUST BUTTERFLY THROTTLE. We find that considerable loss of power and over-heating troubles are being caused by the exhaust butterfly throttle opening… | ||
| Scan084 | Drawing showing alterations to the leverage system for the 40/50 exhaust butterfly. | ||
| View original record | ALTERATION TO LEVERAGE. NECESSARY TO MAKE EXHAUST BUTTERFLY OPEN COMPLETELY DURING FIRST HALF OF ACCELERATOR TRAVEL LENGTH OF THIS LEVER TO BE ALTERED FROM 1.00" TO .80" E71666 1.00 1.750" .875 1.00"… | ||
| Scan085 | Technical drawing, Scheme II, for an alteration to the exhaust choke valve mechanism. | ||
| View original record | SCHEME II BALL AND PIN REVERSED POSITIONS AND LEVERS! 2.00 TORSIONAL SPRING PIN LOCATING COLLAR AND HOLDING TORSIONAL SPRING COLLAR PUSH FIT ON SHAFT SLOT AND PIN ALLOWING .600" FREE MOVEMENT OF BALL… | ||
| Scan086 | Hand-drawn schematic of two alternative mechanical linkage and spring-loaded piston assemblies. | ||
| View original record | SCHEME I. E71666 ALTER FROM 1.00" TO .800" A E71670 ALTERED FROM 1.25" TO. 2.00" ALTERNATIVE SCHEME SLIDING BRASS PISTON SOLDER SPRING SIMILAR TO E11434 ONLY FREE LENGTH 7.00", SET UP IN THIS CASE TO… | ||
| Scan087 | Requesting a scheme to convert 40/50 cars from exhaust heated to water heated throttles. | ||
| View original record | 13435 To BY. from E. SECRET. E1/M28.4.25. c. to CJ. HS. RE. 40/50 CARS WITH EXHAUST HEATED THROTTLES. X. 8230 X. 3435 Would you kindly prepare, in accordance with Mr. Royce's wishes, a scheme for… | ||
| Scan088 | Overheating problems in Australia, focusing on the choke valve and exhaust heated throttle on 40/50S models. | ||
| View original record | To CJ. from R. c. to HS. BY. E. X36 R5/M28.4.25. RE. OVERHEATING OF 40/50S. CJ1/S27.4.25. X.766 X.3636 X.8230 I have just heard of the Australian trouble. My impression is that the choke valve in the… | ||
| Scan089 | Suggestion to wire Australia with instructions to cancel an exhaust valve and revert to a water-heated throttle for retesting. | ||
| View original record | -2- I suggest wiring Australia with Derby's approval as to possibilities of doing so, etc. as follows :- "CANCEL VALVE IN EXHAUST AND REVERT TO WATER HEATED THROTTLE RETEST AND REPORT". R. | ||
| Scan090 | Decision to revert from exhaust heating to water heating for the throttle on 40/50 and EAC models. | ||
| View original record | /3286 To Hs. from R. S E C R E T. R2/M.5.25. EAC. AND 40/50. THROTTLE HEATING. X.8230 X.3436 X.766 E. and I have come to the conclusion that we should be better off if we revert to water heating of… | ||
| Scan091 | Engine exhaust fumes entering the vehicle body and a proposed solution using a modified exhaust pipe. | ||
| View original record | To Hm. from R. c. to CJ. BJ. Hs. +3436 R4/M11.6.25. RE. ENGINE EXHAUST FUMES IN BODY. X. 8230 X. 3436 X. 3908 I saw BJ. on this subject, and admitted that I had noticed the same fault, the smell… | ||
| Scan092 | Modifications to the exhaust silencer system for American 'Phantom' chassis cars. | ||
| View original record | To BJ/PY. from E. c. to Hs. 43236 E2/M16.9.25. X.3692 X.3436 X.8230 RE, EXHAUST SYSTEM. AMERICAN CARS. Referring to your memo. BY/PY19/WESS.9.25., this matter was raised some time ago at WW. and it… | ||
| Scan093 | Design and performance of the 'Phantom' exhaust system silencer. | ||
| View original record | To BJ. from Hs. +3430 Hs4/LG25.9.25. 'PHANTOM' EXHAUST SYSTEM. V8230 BJ5/H24.9.25. The position of the silencer is - we have reported to R.q that we are now waitingfor a design from WW. The silencers… | ||
| Scan094 | Tests comparing governor control versus hand-controlled throttle to prevent explosions in the silencer. | ||
| View original record | X34386 Hs/AJLL/T/16.11.26. EXPLOSIONS IN SILENCER. X93 X8230 THROTTLE CONTROL. X8140 Tests we have carried out indicate that a positively hand controlled throttle is a definite disadvantage as… | ||
| Scan095 | Diagnosing and remedying explosions in the silencer caused by incorrect throttle and governor control adjustments. | ||
| View original record | contd :- -2- It is very important that all controls be adjusted to ensure that the throttle closes when the governor lever is at the bottom of the quadrant. In previous reports we have emphasised very… | ||
| Scan096 | Engine explosions, their causes, and a comparison between Phantom and Silver Ghost models. | ||
| View original record | contd :- -3- lever is set to drive the car, consequently the range over which explosions can occur is relatively small. Our recommendations for reducing explosions to a minimum were given in… | ||
| Scan097 | Conclusion of a report comparing performance against the Phantom and noting a future report on a roller bearing throttle. | ||
| View original record | contd :- -4- slightly quieter than the Phantom and absorbed considerably more H.P. We hope to be in a position to report on the roller bearing throttle in the course of the next few days.… | ||
| Scan098 | Production difficulties and proposing a design alteration for the Swan Neck Connection on the rear silencer. | ||
| View original record | To Da. from Bn c. to sy. c. to Hs. Copy x.3642 Bn2/W9.9.19. SWAN NECK CONNECTION ON REAR SILENCER - E.18063/4 E.18065. Considerable difficulty is being experienced in the production of the Swan Neck… | ||
| Scan099 | Correcting part numbers for the swan neck connection on the rear silencer. | ||
| View original record | X 3642 To Da. from Bn. c. to By. Hs. Bn2/W10919. ----------- RE SWAN NECK CONNECTION ON REAR SILENCER. Bn2/W9919. With reference to Bn2/W9919 re the above the Production Dept. point out that the part… | ||
| Scan100 | From a progress meeting correcting part numbers for a Swan Neck Connection on the Rear/Silencer. | ||
| View original record | To By. From Dpt. SET. HS. X 3642 To. Dy. Dept. c.c. to D.S.W c.c. to C.O.P.V. Bnl/W10919. RE PROGRESS MEETING FOR SEPT. 8TH. Swan Neck Connection on Rear/Silencer. Bnl/W9919. With reference to… | ||
| Scan101 | Request to modify the Swan Neck Pipe from the silencer to increase clearance from the rear seat cushions to prevent them from being burnt. | ||
| View original record | R.R. 325. (300 T) (S P. 674. 29-5-19) G. 2376 To Hs. from Bn. x.3642 Chassis Bn11/W24919. Mr. Oldham asks if it is not possible to modify the Swan Neck Pipe from the Silencer to provide a little more… | ||
| Scan102 | Issues with the front spring shackle pin catching the front engine silencer. | ||
| View original record | X3642 EH. from EP. c. to Im c. to By. EP1/F27.9.19. Re. Inspection of Front Engine Silencer. ------------------------------------ We have always had a considerable amount of trouble with the front… | ||
| Scan103 | Extract from a Coachbuilders Conference discussing fire damage caused by the Swan neck exhaust pipe. | ||
| View original record | Oct. 8th 1919. Extract from:- Coachbuilders Conference No. 6. Held at Conduit Street on the 26th September 1919, at 3 p.m. ------------------------- X.3642. (2) Swan neck pipe of the Exhaust. Cases of… | ||
| Scan104 | Enclosing two blueprints for an experimental Swan Neck Connection on the near silencer for a 40/50 Chassis. | ||
| View original record | X.3642. To Col. Evans for SYTT To Derby C. to Supt. C. to Ck. DA/SYTT/EF20.11.19. 40/50 Chassis - Swan Beck Connection on Near Silencer - Sec. 5230 - X.3642. X.364Y Please receive herewith two Blue… | ||
| Scan105 | List of new parts fitted to a car for a 10,000-mile run, with associated remarks. | ||
| View original record | X 3640 Extract from Hs2/LG5.1.20. X.3743. - WE CAR TO RUN 10,000 MILES. X.3647. -------------------------------------------------- New parts fitted. Remarks. 25. Luggage Grid. X.3507. 26. Silencer .5… | ||
| Scan106 | New design for a silencer elbow and swan-neck exhaust pipe. | ||
| View original record | X3642 To Bn. from Da. c. to Wd. Da11/CB29.3.20. X.4072. RE SILENCER ELBOW. E.2240. X.3642. X.3436. ------------ ------------------------- -------- -------- Replying to your Bn1/W25.3.20m the new… | ||
| Scan107 | Requesting a report on a Silencer Elbow E. 2240 to be issued for Mr. Royce's acceptance. | ||
| View original record | COPY. x 3642. To Hs. from BN. c. to D. c. to Wd/Ms EFC Bnl/W30.3.20. RE SILENCER ELBOW E. 2240. x.3436 Please see attached Da11/CB29.3.20, Wd/Ms12/FJ24.3.20., note from Mr. Bullough dated 22nd. March,… | ||
| Scan108 | Suggestion to manufacture E.2240 Elbows from stampings instead of castings due to poor quality. | ||
| View original record | COPY. X.3642 Attached BN/W 20.3.20 To Mr. Wormald. 22.3.20. X.3642 Re. E.2240 Elbows. X 3436. I would like to suggest that if possible this pieces be made from stampings instead of at present cast. It… | ||
| Scan109 | Manufacturing issues with steel castings for Silencer Elbow E.2240 and suggesting an alternative method. | ||
| View original record | X 3642. Attached Bn/W 30.3.20 COPY. Bn. Wd/Msl2/FJ24.3.20. X 3642 Re Silencer Elbow E.2240. X 3436 We are experiencing considerable trouble in obtaining satisfactory steel castings of the above, and I… | ||
| Scan110 | Requesting a status update on the design modification of Silencer Elbow E.2240 for submission to Mr. Royce. | ||
| View original record | To Wd. for Ms. From Bn. c. to Da. X.3642. Attached Bn/H/30.3.20. Bn1/W25.3.20. X.3642 RE SILENCER ELBOW E.2240. X.3486 With reference to Wd/Ms12/FJ24.3.20, passed herewith to Da, together with note… | ||
| Scan111 | Page 3 of a 10,000-mile test report for the 2EX Chassis, listing parts intended for standardization. | ||
| View original record | X.3642 Contd. X.3743 - 2EX Chassis - 10,000 mile Test HSL/LG9.4.20. -3- X.607. 5. Smaller size Battery. The standard battery we are now using is 55 ampere hour - the one which has been running on… | ||
| Scan112 | Complaints and proposed modifications to the rear silencer position on the 40/50 chassis to prevent fouling. | ||
| View original record | X3642 from BY/Shn. c. to HS. BY/Shn4/LL.1.10.20. X3642 RE 40/50 CHASSIS - EXHAUST FITTINGS. REAR SILENCER. Complaints have been recently received from both the Erecting Bay and the Test Dept:… | ||
| Scan113 | Recommendation to lower the silencer on the 40/50 chassis by .500' to resolve clearance and drumming noise issues. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. c. to EB. (Handwritten: X.3642) Hs1/LG2.10.20. 647 X.3436. SILENCER ON 40/50 CHASSIS .5" LOWER. --------------------------------- There… | ||
| Scan114 | The issue of standardisation sheets for Wakefield Castrol 'R' Oil, a Whittle belt, and a silencer. | ||
| View original record | X.3642 To Bm. from Ms/AT. By. Da. HT. PW. Ms/AT4.10.20. RE STANDARDISATION SHEETS. Herewith please receive standardisation sheets for the following:- X.1583. Wakefield Castrol "R" Oil. X.3735. Whittle… | ||
| Scan115 | Lowering the silencer on a 40/50 HP chassis and correcting a clerical error. | ||
| View original record | X.3642 To Hbr from R. Copy to C. BM DE EPC. H4/06/10/20. RE SILENCER ON 40/50 H.P. CHASSIS. With reference to your memo HS1/102/1C/20, I have no objection to the silencer being lowered .500". The… | ||
| Scan116 | Holding up a job for the standardisation of a chassis part and modification to a silencer. | ||
| View original record | X 3642 To Hs/AT. from Rd. e. to Wor. c. to Da. Rd1/139/116.10.20. STANDARDISATION OF CHASSIS PART X NO. 3642. MODIFICATION TO SILENCER. DRAWING 2397. Hs/AT1/S4.10.20. We are afraid we will have to… | ||
| Scan117 | Dropping the exhaust system by 0.5 inches on the 40/50 chassis. | ||
| View original record | To EF from DA. Copy to HS (1 print). Copy to YS (1 print). Copy to R&C(1 print). Copy to EFC. X 3642 DA3/CB29-11-20. ------------NOV------ RECEIVED X 3642 RE EXHAUST SYSTEM - 40/50 CHASSIS. With… | ||
| Scan118 | Standardisation sheet for a front and rear silencer lowered by .500 inches. | ||
| View original record | X 3642 To R. from Hs/AT. C.J. WDP. Env. By. De. EP PH EWi. for R+R. Inc. D/Rd Hs/AT8.11.20. X.3642. SILENCER FRONT AND REAR .500" LOWER. Herewith please receive completed standardisation sheet for the… | ||
| Scan119 | Standardisation of chassis parts: lowering the front and rear silencer by .500 inches. | ||
| View original record | R.R. 765 (S H) (S.H. 187, 20.8.20) G. 2807. COMPLETED STANDARDISATION of CHASSIS PARTS. Description of Parts. X.3642 Silencer front and rear .500" lower. Origin. To give more clearance between… | ||
| Scan120 | Recommendation to lower the silencer on the 40/50 chassis by .500' to resolve clearance and vibration issues. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. c. to EP. Hs1/LG.2.10.20. 642 X.3436. SILENCER ON 40/50 CHASSIS .5" LOWER. -------------------- There is a lot of difficulty on our… | ||
| Scan121 | Note on lowering the silencer by .500 and ordering brackets for the old standard position. | ||
| View original record | X.3642 11.10 20 X.3642: SILENCER .500 LOWER. Brkts. for old Std. position ordered up to end of P. series. | ||
| Scan122 | Request for a list of exhaust connection and fitting parts to be cancelled or scrapped due to a silencer design change. | ||
| View original record | X 3642 OCT 14 1920 RECEIVED BY9/H. 13. 10. 20. Mr.Shelton. c.c. ME. c.c. Rd. c.c. EFC. X3642 EXHAUST CONNECTIONS & FITTINGS. -------------------------------------- Kindly supply to Rd. a list of the… | ||
| Scan123 | The cost of scrap material for 500 sets caused by chassis modifications. | ||
| View original record | COPY X.3642. To BY. for EFC. from Rd. Rd/AIR1/137/M28.10.20. Silencer front grear .500" lower. X.3642. COST OF SCRAP CAUSED BY CHASSIS MODIFICATIONS. In reply to. BY/Shn4/ML14.10.20. The cost to the… | ||
| Scan124 | Modification to lower the front and rear silencer, held up for scrap cost approval. | ||
| View original record | X3642 To C.J. from Hs/A¹. Hs/AT1/S4.11.20. X.3642. SILENCER FRONT AND REAR .500" LOWER. With regard to the above, in accordance with the latest regulations, this sheet was held up for cost of scrap to… | ||
| Scan125 | Customer issues with explosions in the silencer and enquiring about a potential standardized fix. | ||
| View original record | Hs. EP/Tmn9/029.9.21. F.R. Re, Explosions in the Silencer. X3642 --------------------------- You will remember that we brought to your attention some time ago the fact that we are having considerable… | ||
| Scan126 | Main silencer unions on the 40/50 HP chassis, discussing copper asbestos washers and gun metal nuts. | ||
| View original record | V3642 Mr. Br. EP/Mx2/H7.5.24. 40/50 HP. Chassis. Main Silencer Unions. We are attaching for your information copies of two memos which we have received from Cricklewood, reference Br1/H.2.5.24. and… | ||
| Scan127 | Confirming details about C & A washers for main silencer unions on 40-50 HP models. | ||
| View original record | N-W HP/Mx. Br1/H.5.5.24. Technical - 40-50 H.P. re Main Silencer Unions. Thank you for your note of the 3rd. concerning the attached memo. I beg to confirm that C & A Washer is meant in the fourth… | ||
| Scan128 | Rattles and exhaust blows from main silencer unions on 40-50 HP cars, suggesting material and design improvements. | ||
| View original record | N-W. EP. Technical - 40-50 H.P. re Main Silencer Unions. We have had an epidemic lately of complaints about rattles and exhaust blows from the main silencer unions, several customers, in fact, blaming… | ||
| Scan129 | Swan neck connection for a rear silencer. | ||
| View original record | R.R. 493 (40 H) (SL 42 12-7-23). J.H., D. X3642 EXPERIMENTAL REPORT. COPIES TO: R.C.J. BJ. WOR. By. E. Da. EP. PN. OY. Expl. No. 3642 REF. Hs2/LG1.9.23. OBJECT OF TEST. TESTER. In order to confirm… | ||
| Scan130 | Recommending an increase in material gauge for the 40/50 HP car's silencer snout due to damage from explosions. | ||
| View original record | To EY. from Hs. X3642 Hs4/LG3.6.24. X3642 RE. 40/50 HP. SILENCER SNOUT. We notice on numbers of 40/50 HP. cars, the silencer snout has been opened up between the bars welded in the end of the snout,… | ||
| Scan131 | Query regarding the extent to which car silencers become choked up and the methods for cleaning them. | ||
| View original record | X.3642 To HM. from E. c. to CJ. HS. E2/M31.12.24. Re. SILENCERS. X.3642 We should be glad if you could supply some information as regards the extent to which silencers used on our cars become choked… | ||
| Scan132 | Maintenance of silencers, noting they do not get choked except on old 30HP cars. | ||
| View original record | To E. from Hm. G. to OJ. C. to Hs. X3642 Hm4/W2.1.25. Re Silencers. In reply to E2/M31.12.24, with the exception of the old 30HP. cars our experience is that the Silencers do not get choked. We do not… | ||