Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Article from a series on fuel efficiency, detailing the checks for transmission and wheel alignment. | ||
| View original record | OCTOBER 1, 1914. THE AUTO MOTOR JOURNAL MILES PER GALLON. (Continued from page 1106.) V.—THE TRANSMISSION. In the preceding articles of this series we have considered those factors which influence the… | ||
| scan0002 | Internal memorandum regarding a letter and booklet for a 'Scott Patent Cushdrive' flexible transmission. | ||
| View original record | R F (100 T) (S.H. 798,10-12-20) G. 2948 R. from Wd. c. to Cl. c. to Eg. c. to Da. c. to Ev. c. to Hs. X1571 FC RECEIVED AUG 6 1921 A4/WJ4.8.21. Walter Scott, 102, Grange Road East, Middlesbrough.… | ||
| scan0003 | Copy of a letter from Walter Scott offering his patented 'Cushdrive' flexible transmission. | ||
| View original record | COPY OF LETTER RECEIVED FROM:- WALTER SCOTT, 102, GRANGE ROAD EAST, MIDDLESBOROUGH. Messrs Rolls Royce Ltd., Derby. Aug. 3rd. 1921. Dear Sirs, You will find enclosed a prospectus of the "Scott Patent… | ||
| scan0004 | Letter discussing a 'chunking' noise in the transmission and its relation to slack in the high-speed dogs and rear spring types. | ||
| View original record | X/1511 CC Mr. Belnap Mr. Madison Oy6 - G 19821 August 19, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. Royce & Works Committee. Dear Sir:- Re:… | ||
| scan0005 | Letter regarding engine missing issues, with an attached mirrored copy of a report discussing suspension performance and 'gumptioning'. | ||
| View original record | X1211 We find that it is not practically possible to obtain an engine which will consistently run slow without occasionally missing, even when run on both ignitions. Yours truly, ROLLS-ROYCE OF… | ||
| scan0006 | Design and implementation of an 'Anti Groan Device' for existing cars and the 'V' series. | ||
| View original record | To BY. from AJS. c. to CJ. R. c. to E. Hs. X1511 AJS1/M22.12.24. ANTI GROAN DEVICE - 40/50. X.1511 X.3435 Referring to your memo. BY10/H19.12.24., and wire of even date :- (1) CJ. has allowed me to… | ||
| scan0007 | Source and potential solution for 'groans' on a standard chassis. | ||
| View original record | To BY. from E. c. to CJ. HS. X1511 E1/M23.12.24. X.3435 X.1511 RE. GROANS ON STANDARD CHASSIS. In reply to your memo. BYLO/H19.12.24., Mr. Stent has reported separately in AJS1/M22.12.24., on the… | ||
| scan0008 | Forwarding a report about transmission groans on 40/50 cars, specifically Sir Mortimer Singer's car. | ||
| View original record | Hs. C. Wor. for Production Test Dept. X1511 EP/TMa2/H2.1.25. re. Transmission Groans - 40/50 Cars. With reference to the above, I attach herewith copy of a report from CWB. with regard to Transmission… | ||
| scan0009 | The re-testing and diagnosis of a noise issue in car number 68-TM for Sir Mortimer Singer. | ||
| View original record | COPY. S/W. (EP.) CWB4/LH23.12.24. Car No. 68-TM. Sir Mortimer Singer. This car was worked on at 'N' for the week-end and I re-tested it on Monday morning. I found a very marked improvement in the… | ||
| scan0010 | Information about the characteristics of transmission groans to aid in current investigations. | ||
| View original record | (151) To CWB. from Hs. c. to EP. HS2/LG5.1.25. TRANSMISSION GROANS. We should be interested to know whether the transmission groans which were cured on Sir Mortimer Singers' car by freeing the centre… | ||
| scan0011 | Coupling sleeve modification for 40/50 cars experiencing groans. | ||
| View original record | To BY. from AJS. c. to R. CJ. HS. X1511 AJS/2M/9.1.25. COUPLING FOR 40/50 CARS WITH GROANS. X3435 X.1511 We send herewith LeC.1972 (original to BY - print to R.) shewing a coupling sleeve to enable… | ||
| scan0012 | Diagnosing transmission groans, boominess, and roughness in a vehicle at various speeds. | ||
| View original record | S/W (Hs) copy to: S/W (EP) X1511 CWB24/LH9.1.25. T R A N S M I S S I O N G R O A N S. ------------------------------- Your Hs2/LG5125 received. I do not consider that the transmission groan in this… | ||
| scan0013 | The ongoing work on car 68-AU for a transmission drive groan and the delay in its re-delivery. | ||
| View original record | W/S Sg. c. CWB. c. Production Test Dept. c. Hs. X1511 re. 68-AU. Barkers. We received your wire this morning, pointing out the urgency of the above and asking when it could be re-delivered. We regret… | ||
| scan0014 | 10 lbs sample of Whitmore Transmission Compound submitted for trial by George H. Alexander Machinery Ltd. | ||
| View original record | Hs. X1511 H13/EA22.6.26. Laboratory. We send you herewith one tin containing 10 lbs of Whitmore Transmission Compound which has been submitted, by Messrs. George H.Alexander Machinery Ltd.,… | ||
| scan0015 | Informational leaflet about Whitmore's Spring Composition for protecting automobile springs. | ||
| View original record | RIDING ON WHITMORE'S (Trade Mark Reg. U. S. Pat. Office) Protects the Springs of Automobiles Stops Rust—Corrosion—Squeaks—Rattles THE Whitmore Manufacturing Company have developed a special lubricant… | ||
| scan0016 | Promotional leaflet cover for Whitmore Manufacturing Co. lubricants, distributed in the UK by Geo. H. Alexander Machinery Ltd. | ||
| View original record | THE WHITMORE MANUFACTURING CO. LUBRICATING TRADE MARK ENGINEERS CLEVELAND, OHIO STOP DEPRECIATION GENERAL DISTRIBUTORS FOR GREAT BRITAIN GEO. H. ALEXANDER MACHINERY LTD., 83 & 84 COLESHILL STREET,… | ||
| scan0017 | Request to the laboratory for a report on a sample of Whitmore Transmission Compound. | ||
| View original record | Hs. X1511 H11/EA26.8.26. Laboratory. Under cover of ours H13/EA22.6.26. we sent to you a tin containing 10lbs of Whitmore Transmission Compound, together with literature regarding same, which had been… | ||
| scan0018 | Letter from a consulting engineer regarding the 'Spontan' Patent Transmission, referencing an article in 'Engineering' magazine. | ||
| View original record | COPY FOR RESEARCH DEPARTMENT. X1511 FREDRIK LJUNGSTRÖM, CONSULTING ENGINEER. TELEPHONE - GERRARD 5571. COMMERCIAL MOTOR TRANSPORT EXHIBITION STAND No. 154, OLYMPIA, LONDON, W. 14. Managing Director,… | ||
| scan0019 | Letter to the Managing Director detailing the features and benefits of a 'Spontan' Patent Transmission. | ||
| View original record | The Managing Director 2. and an effortless application of the brakes is thereby achieved. In this way, an important saving of time in applying the brakes is effected - proving many times to be the… | ||
| scan0020 | The concluding page of a letter from Fredrik Ljungström, Managing Director of Aktiebolaget Spontan, regarding a demonstration during an exhibition. | ||
| View original record | The Managing Director 3. The writer looks forward to the pleasure of hearing from, and demonstrating to, you during his stay in this country for the Exhibition. Yours faithfully, AKTIEBOLAGET SPONTAN.… | ||
| scan0021 | Page from the 'Engineering' journal describing a single-lever control system for motor-cars. | ||
| View original record | Nov. 18, 1927.] ENGINEERING. 659 SINGLE-LEVER CONTROL FOR MOTOR-CARS. CONSTRUCTED BY MESSRS. AKTIEBOLAGET SPONTAN, STOCKHOLM, SWEDEN. Fig. 2. Fig. 3. Fig. 4. Fig. 5. (376.B.) Fig. 6. GEAR-BOX IN… | ||
| scan0022 | Engineering journal page detailing the Ljungström single-lever control system for motor-cars with component illustrations. | ||
| View original record | 660 ENGINEERING. [Nov. 18, 1927. LJUNGSTRÖM SINGLE-LEVER CONTROL FOR MOTOR-CARS. CONSTRUCTED BY MESSRS. AKTIEBOLAGET SPONTAN, STOCKHOLM, SWEDEN. FIG. 7.—CRANKSHAFT AND ROTARY UNIT. FIG. 10. CRANKSHAFT… | ||
| scan0023 | Article from the journal 'Engineering' discussing the Ljungström single-lever control for motor-cars, with accompanying diagrams. | ||
| View original record | Nov. 18, 1927.] ENGINEERING. 661 LJUNGSTRÖM SINGLE-LEVER CONTROL FOR MOTOR-CARS. CONSTRUCTED BY MESSRS. AKTIEBOLAGET SPONTAN, STOCKHOLM, SWEDEN. [Diagrams Section] Fig. 13: Motor Flywheel, Outer… | ||
| scan0024 | The design and operation of the Spontan automatic transmission gear. | ||
| View original record | [Nov. 18, 1927. THE SPONTAN TRANSMISSION GEAR. THE motor vehicle, whether of the commercial or private passenger type, is becoming more and more essential in daily life, with the result that the more… | ||
| scan0025 | Inventor, Mr. John Craig, and his proposition regarding a pump and variable gears. | ||
| View original record | Y1511 PN.2/WT16.10.28. S/W. Hs....from PN. The attached letter is from Mr. John Craig who has previously, you may remember, sent us particulars of his invention relating to a pump. Mr. Craig is… | ||
| scan0026 | Letter from an engineering firm proposing a new transmission system, called a booster. | ||
| View original record | JOHN CRAIG & CO. GENERAL AND ELECTRICAL ENGINEERS. AUTOMATIC MACHINERY. TELEPHONE: GERRARD 0908. J. F. N. CRAIG. 9, REGENT STREET, LONDON, S.W.1. IN REPLY QUOTE October 12th 1928. P. Northey, Esq.… | ||
| scan0027 | Letter to John Craig regarding his invention of variable gears. | ||
| View original record | PN.1/WT161028 16th October 1928. John Craig Esq. Messrs. John Craig & Co. 9, Regent Street. S. W. 1. Dear Sir, Thank you for your letter of the 12th instant. I am interested to hear that you are… | ||
| scan0028 | Potential adoption of new internal-geared transmissions and associated experimental designs. | ||
| View original record | OYL.R.1.15.29 X1511 January 15th, 1929. TO: Mr. Beaver cc - Mr. Burton Mr. Southern FROM: Mr. Olley RE GEARBOX Summary. The new internal-geared transmissions give a combination of silence and easy… | ||
| scan0029 | List and analysis of easy-changing gearboxes and shifting devices from various manufacturers. | ||
| View original record | - 2 - At present a partial list is as below: (1) Internal geared easy-changing boxes. (Ahlm-Pearson patents) AMERICAN Auburn Chrysler (soon to be adopted) Duesenberg (new large car) Durant (has had… | ||
| scan0030 | Comparison of 3-speed and 4-speed gearbox designs, their ratios, and their suitability for American drivers. | ||
| View original record | - 3 - The Franklin has a three speed box with conventional shift. [Diagram of a 3-speed H-pattern gearbox: Top row: R, 2 Bottom row: 1, 3] The most reasonable arrangement of a four speed box for… | ||
| scan0031 | Recommendation for a gearbox and gearshift, suggesting a Stutz-type 3-speed with an emergency low. | ||
| View original record | - 4 - If this were the approved plan we should recommend the form of box and gearshift used on the Stutz (illustrated in attached sheets) which uses the conventional 3-speed shift with an "emergency… | ||
| scan0032 | Letter concerning advancements in American gearbox technology, particularly the 'Synchro-mesh' system. | ||
| View original record | February Seventh, 1929. Mr. A.F. Sidgreaves, Messrs. Rolls-Royce, Ltd., 14 Conduit Street, London, England. Dear Mr. Sidgreaves:- Subject: Gear Boxes There have been real rapid strides made in… | ||
| scan0033 | Letter discussing the rapid adoption of convenience features in the American automotive market, such as front brakes, chassis lubrication, silent gearboxes, and chromium plating. | ||
| View original record | -2- emphasized in great detail the many advantages. The result is that in a short time every automobile built in America, including Ford, has had to adopt front wheel brakes. The same thing has… | ||
| scan0034 | Progress on the 20 HP transmission's free wheel side shaft. | ||
| View original record | To R. from Hs/Rn. c. to Da. By. X1511. Hs/Rn.4/MJ.30.8.29. 66 20 HP. TRANSMISSION. We hope to have the free wheel side shaft on the 20 HP. gear box running very shortly after the Schneider Trophy… | ||
| scan0035 | Letter regarding improved transmission, specifically the Sinclair Hydraulic Coupling and Millam Free Wheel. | ||
| View original record | Y 1511. SIR W. G. ARMSTRONG WHITWORTH & CO. (ENGINEERS) LTD. SCOTSWOOD WORKS, NEWCASTLE-UPON-TYNE, 5. TELEGRAPHIC ADDRESS: "ARMSTRONGS, NEWCASTLE-UPON-TYNE" TELEPHONE: NEWCASTLE 34201 (4 Lines) LONDON… | ||
| scan0036 | Letter from an engineering company outlining the advantages of a hydraulic coupling and free wheel transmission system. | ||
| View original record | -2- (1) A quick and silent gear change either up or down at any speed. (2) Protection from the possibility of engaging a low gear when the car is going at speed, with the resultant strain upon the… | ||
| scan0037 | 20/25 transmission overrun rattle at 50 M.P.H. and a request to detail a solution. | ||
| View original record | x 1511 By. From Hs/Gry. c. to By/SS. Hs/Gry.2/MA.24.11.32. 20/25 TRANSMISSION RATTLES. We have at the moment a bad case of the 50 M.P.H. overrun rattle in Lp's car and would like to try N.Sch.3452 to… | ||
| scan0038 | Rattles on the Peregrine transmission and urging for a Chrysler-style damped spring drive clutch member. | ||
| View original record | 1511 By. From Hs/Rn. Hs/Rn.12/MA. 2.12.32. RATTLES ON PEREGRINE TRANSMISSION. This is to ask you to urge the pieces for the driven clutch member on Peregrine which reproduces the Chrysler damped… | ||
| scan0039 | Causes and potential solutions for transmission rattles. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. DA. X1511 R1/M12.12.32. TRANSMISSION RATTLES. With reference to the above, which seem to exist somewhat on all our cars, this as you know is an old fault, and worried us… | ||
| scan0040 | Conversation about clutch driven members with spring drives to address transmission rattles. | ||
| View original record | 81511. DA. from Hs/Rm. Hs/Rm.2/KT.23.1.33. TRANSMISSION RATTLES. With reference to our conversation on clutch driven members with spring drives, we send you herewith R.R.Sch.299 which shews the scheme… | ||
| scan0041 | Issue of rattles in the transmission of 20/25 HP cars. | ||
| View original record | To Ag. from Hs/Rn. c.c. Nor. R. c.c. Ey. Da. c.c. Hd. MAY. c.c. XP. MX. X/5/11 Hs/Rn.3/CT.9.5.35. RATTLES IN THE TRANSMISSION. For the past four years there have been isolated cases of 20/25 HP. cars… | ||
| scan0042 | Inquiry regarding the Fleischel automatic transmission system and its potential use in England. | ||
| View original record | X 1511 W/Paris. To Sr. from Hs/Gry. Hs/Gry.8/KT.16.5.33. Can you let us know whether any cars in France are fitted with the Fleischel transmission, comprising an automatic gear change above a certain… | ||
| scan0043 | Rattles in the transmission and the lack of a suitable test car. | ||
| View original record | S/W Hs/Rm C12/C19.5.33 RATTLES IN THE TRANSMISSION. Hs/Rm3/KT9.5.33 I do not know whether you are expecting a reply to the last paragraph of your memo, but our position is that we have no car at… | ||
| scan0044 | Fleischel transmission system and the possibility of testing the inventor's car in Paris. | ||
| View original record | To "Hs" Derby Showrooms Sr4/MLG.22.5.33 GRY XIS'll In answer to your Hs/Gry.8/KT.16.5.33 I immediately got in touch with Mr. Faroux who informed me that the only car fitted with the Fleischel… | ||
| scan0045 | Trip to France to test the Fleischel transmission in a Bentley car. | ||
| View original record | Sr. (Paris). From Hs. y/511 Hs.5/MJ.24.5.33. Dear Slater, I am hoping to come over to France in about two to three weeks' time with a Bentley car. When I am there I should like to take the opportunity… | ||
| scan0046 | Following up on a conversation with Mr. Schneider about a demonstration of the Maybach transmission system. | ||
| View original record | S/W. To E from F. Copy to Wor. Hs. X/511 F3/PH.7.6.33. re: MAYBACH TRANSMISSION. Further to F7/LAM.20.5.33, to which we cannot trace having received a reply, Mr. Schneider rang up this morning and… | ||
| scan0047 | The Maybach Transmission, agreeing with a previous communication. | ||
| View original record | To F. from E. c. Wor. Hs. X 1511 E.2/HP.8.6.33. re: Maybach Transmission. We agree with your memo F.3/PH.7.6.33. and will expect to receive latest particulars of this transmission in due course. E. | ||
| scan0048 | Query regarding parts being prepared to fix transmission rattles on Dr. Daniels' car. | ||
| View original record | S/W Hs/Rm XIS11 C15/C9.6.33 Re Rattles in Transmission. ----------- With reference to Hs/Rm.3/KT 9.5.33 and C12/C19.5.33, is this the trouble that you found on Dr.Daniels' car, to cure which you are… | ||
| scan0049 | The preparation of parts to resolve issues with rattles in the transmission. | ||
| View original record | Y/S'll To C. from Hs/Rm. Hs/Rm.5/KT.13.6.33. RATTLES IN THE TRANSMISSION. It has now been agreed that the Repair Dept. shall prepare six sets of parts to deal with this trouble. We cannot recollect… | ||
| scan0050 | Follow-up memorandum concerning rattles in the transmission. | ||
| View original record | S/W Rm XISCIII Re: Rattles in Transmission. H9/AL.11.7.33. With reference to my H8/H.27.6.33. and Hs/RM5/KT.13.6.33 are you yet able to advise us when you will have ready the sets of parts that are… | ||
| scan0051 | Rattles in the transmission and the availability of anti-rattle clutch parts. | ||
| View original record | W/S. To H. from Hs/Rm. c. to Hd. Hs/Rm.4/KT.13.7.33. RATTLES IN THE TRANSMISSION. With reference to H.9/AL.11.7.33. On communicating with the Repair Dept. we find that they have not produced any sets… | ||
| scan0052 | Customer complaints about rattles in the transmission and potential solutions involving a damped flywheel or anti-rattle clutch centre. | ||
| View original record | X1511 Rm S/W. (Hs/Rm.) - copy to Hd. H10/H14.7.33. Re: Rattles in transmission. -------------------------- Thank you for your Hs/Rm4/KT13.7.33. - the position really is very much as you set it forth… | ||
| scan0053 | The acquisition of two sets of parts. | ||
| View original record | W/S. To H. from Hs/Rm. c.c. to Hl. Hs/Rm.3/KT.28.7.33. With reference to W10/H14.7.33. We understand from Hl. that he will have two sets of the parts which you require at the end of the week. If you… | ||
| scan0054 | Groans and rattle periods in Bentley drives and a proposed slipper drive solution. | ||
| View original record | Hs O.E. My [crossed out] X(S) EP5/MH.18.12.33 re BENTLEYS - GROANS & RATTLE PERIODS IN DRIVE ------------------------------------------ Further to our EP3/MH.7.12.33, we understand a slipper drive for… | ||
| scan0055 | Need for a propeller shaft damper for the Wraith transmission. | ||
| View original record | E. from Rm/Smth. c. Da. c. Hdy. LOGG 1330 Rm/Smth2/R.8.12.36. WRAITH TRANSMISSION. From our experience of 25/30 and Bentley, it appears that with transmissions proportioned as ours are now, a… | ||
| scan0056 | Addition of a balancing ring to the Phantom III transmission shaft. | ||
| View original record | DY C. Rm. RHC. HPS. 1330. CRY-fmTH Da.2/HP.24.12.36. Phantom III Transmission Shaft. We wish to add a ring of metal to the rear portion of the clutch transmission shaft for the purposes of balancing.… | ||
| scan0057 | Request to detail and create a dashpot deceleration control, an anti-chunking gadget, for the Phantom III transmission. | ||
| View original record | HPS from Rm/Smth. 1330 Rm/Smthg/M.17.2.37. Phantom III Transmission Chunks. Will you please detail and make us a dashpot deceleration control for Ph. III as shown on Rm 328. This is an anti-chunking… | ||
| scan0058 | Blueprint of a deceleration control device for a Phantom III model. | ||
| View original record | BRACKET ATTD. TO LEVER THROTTLE CONTROL BELL-CRANK LEVER AT BACK OF N.S. BLOCK NOT TO SCALE DECELERATION CONTROL - PH III TO BE ALMOST FILLED WITH LOCKHEAD FLUID ROLLS-ROYCE, LTD. PRINT ROOM, 18 FEB… | ||
| scan0059 | Secret memo discussing the proactive design of a propeller shaft damper for the Wraith transmission. | ||
| View original record | 1330. SECRET Da. from Rm/Smth. Hs. Hdy. Rm/Smth.14/AP.2.4.37. WRAITH TRANSMISSION Confirming our discussion with Hdy. this morning, we think that it would be advisable to prepare designs for a… | ||
| scan0060 | Requesting the detailing and preparation of parts for a new propeller shaft damper on a Phantom III transmission. | ||
| View original record | 1530. To HPS. from Rm/Smth. Rm/Smth.10/AP.2.4.37. PHANTOM III. TRANSMISSION. We want to try a propeller shaft damper between the clutch and the gearbox, and as near to the clutch as possible. To… | ||
| scan0061 | Owner's complaint report number 139 regarding a transmission failure on chassis B.174.H.K. | ||
| View original record | 1330 also 261 To [redacted] from HPS/RH. c. to Rm/Gry. HPS/RH.1/VS.19.5.37. OWNER'S COMPLAINT REPORT NO. 139. CHASSIS B.174.H.K. AFTER 6072 MILES. Complaint :- Transmission failure. G.100050. Hub… | ||
| scan0062 | Failure analysis report on rear wheel drivers showing sheared splines and cracks. | ||
| View original record | Ex 153 R.H. DRIVER SHEARED OFF AT COMMENCEMENT OF RADIUS AS SHOWN 2 CRACKS IN L.H. DRIVER AS SHOWN EXTENDING FROM RADIUS AND PICKING UP WITH SHARP CORNER OF SPLINES CRACKS IN END OF BARREL PORTION… | ||
| scan0063 | Letter discussing a potential inventor's new variable transmission system. | ||
| View original record | GRX - Presumably this is a flywheel geared up & storing engine energy Ans 1330 S/W. Rm. CX/KW17.6.37. Variable Transmission. I played golf recently with a man who, from the nature of our conversation… | ||
| scan0064 | Description of a dynamic transmission system featuring a secondary motor, energy storage, and self-controlled operation. | ||
| View original record | THE LAST DYNAMIC TRANSMISSION. The transmission has the characteristics to be expected of a secondary motor in which means are provided for mechanically storing, independently of both input and… | ||
| scan0065 | Letter to the Sales Manager regarding a potential new dynamic transmission from an inventor. | ||
| View original record | Thursday 1330. 11.30. am. TELEPHONE: SUTTON 5558. 20, BEECHES WALK, CARSHALTON, SURREY. 1st. July 1937. CX RECEIVED 5 JUL 1937 Major Cox, Sales Manager, Messrs. Rolls-Royce Ltd., Conduit Street, W.1.… | ||
| scan0066 | Cover note regarding a variable transmission, attaching a letter and arranging a meeting. | ||
| View original record | S/W. Rm. GRY. 1330 Variable Transmission Cx8/KW5.7.37. With reference to your Rm/Gry7/R22.6.37, I attach hereto a letter received this morning from Mr.Owen, and shall be glad to know if you will give… | ||
| scan0067 | Scheduling a visit for Mr. Last to the Works to discuss a variable transmission. | ||
| View original record | W/S. Cx. from Rm/Gry. 1330 Rm/Gry9/R.7.7.37. Variable Transmission. Cx8/KW5.7.37. With regard to Mr. Last coming to the Works, the only days available before the holidays are - Wednesday, Thursday or… | ||
| scan0068 | Letter to Mr. Owen arranging a visit to the Works for a Mr. Last before the holiday closure. | ||
| View original record | 1330 S/W Rm. (Rm/gry 9/R.7.37) Cx1/KW8737 8th July, 1937. J.Owen,Esq., 20,Beeches Walk, Carshalton, Surrey. Dear Mr.Owen, In a memorandum received from our Works this morning they indicate that it… | ||
| scan0069 | Letter arranging a visit to the works to see Mr. Robotham regarding the 'Last Transmission'. | ||
| View original record | 1330 6, Wellesley Grove, Croydon, Surrey. 9th July, 1937. Messrs. Rolls-Royce, Ltd., Nightingale Road, Derby. Dear Sirs, For the attention of Mr. Robotham. re. Last Transmission. In accordance with a… | ||
| scan0070 | Letter returning tracings and inquiring about a manual control for a speed change mechanism. | ||
| View original record | Rm/Gry.25/AP. 1330 Experimental Department 15th July 1937 J.Last Esq., 6 Wellesley Grove, Croydon, SURREY. Dear Sir, We return herewith the tracings you left with us this morning, having taken… | ||
| scan0071 | The 'Last' infinitely variable speed mechanism, detailing its operation, improvements, and disadvantages. | ||
| View original record | 1330 By. from Rm. Hs. Da. Hdy. Cx. Rm/Gry5/R.4.8.37. "LAST" INFINITELY VARIABLE SPEED MECHANISM. Mr. Last visited us just before the holidays to discuss his transmission. He was not able to… | ||
| scan0072 | Device, likely a gearbox, and the decision process for its development. | ||
| View original record | -2- Rm/Gry5/R.4.8.37. We do not know whether such a device would meet with public approval. It is regrettable that a demonstration was not possible. Mr. Last had no intention of spending any money… | ||
| scan0073 | Cover sheet for a report on transmission failures. | ||
| View original record | To Hs. from Rm/GWH. Rm. By. Mx. Rm/GWH.1/AP.17.8.37 Kingsbury Herewith report on Transmission failures. Rm/GWH. | ||
| scan0074 | Report logging transmission failures, separated into 'Driver Dogs' and 'Road Shafts' categories. | ||
| View original record | Transmission Failures. 5.7.37 DRIVER DOGS. ROAD SHAFTS. 5.4.36. B.58.DG. Headlam O/S ? R 25.10.36. B.189.BL.Franklin O/S ?H 16.4.37. B182.EF Wilson " ? H 23.4.37. B.35.BL. Beecham " L. 8.5.37. B.74.HK… | ||
| scan0075 | Transmission and road shaft failures with corresponding vehicle service histories. | ||
| View original record | TRANSMISSION FAILURES. DRIVER DOGS. 11.8.37. B.58.DG. Headlam. Original Owner. Dog Failure 5.4.37. mileage 9906. Engine - Big-end Failure. 23,000 miles. Clutch - Brakes - Adjusted 3,000, rebed 9000,… | ||
| scan0076 | Shaft failures and maintenance history for two vehicles. | ||
| View original record | SHAFT FAILURES. -2- 11.8.37. B.71.BW. Baker. ORIGINAL OWNER. Failure 3.7.37. mileage 54,382. Engine - Clutch - re-line 20,000, re-line 49,000. Brakes - re-bed 10,000, re-bed 20,000, re-line 36,000,… | ||
| scan0077 | Clicking noise in the Wraith transmission, its cause, and potential solutions. | ||
| View original record | 1330 By. from Rm/Gry. c. Hs. c. Da. c. Hdy. c. Mx. c. HPS. WRAITH TRANSMISSION Mx. has complained of a series of clicks in the tranmission during torque reversals when shunting, such as changing from… | ||
| scan0078 | Stiffened flange piece for the Wraith III transmission shaft. | ||
| View original record | BY/MS. C. Rm. 1330 DA.5/G.25.2.38. CFRY Agreed Rm? WRAITH III. TRANSMISSION SHAFT. Herewith is G.CD.490 shewing the flange piece at the rear of the transmission shaft with stiffened boss to prevent… | ||
| scan0079 | Modification to the Wraith III transmission shaft coupling to prevent stretching and distortion. | ||
| View original record | BY/NO. c. Rm. 13BO DA.3/G.2.3.38. WRAITH III. TRANSMISSION. AH GRY Herewith is G.CD.520 shewing a modification to the transmission shaft coupling to prevent stretching and distortion when tightening… | ||
| scan0080 | Request to manufacture a coupling for the Wraith transmission. | ||
| View original record | 1330 HPS. from Rm/Gry. Rm/Gry8/R.25.5.38. WRAITH TRANSMISSION. Will you please make for us:- 1 Coupling to Ex.31301. This is equivalent to the inertia we have been adding to the Sliding Joint of the… | ||
| scan0081 | Operation of a General Motors epicyclic gearbox fitted to an Oldsmobile. | ||
| View original record | 13304 1062. To Hy. c. to Hs. c. to Da. c. to Hdy. c. to Hx. Rm/Gry.10/JH.26.11.38. TRANSMISSION IMPROVEMENTS. G.E.T. Syston has lent to us for a few days his 8 cylinder Oldsmobile which is fitted with… | ||
| scan0082 | Arrangement for a car fitted with a hydraulic transmission by Turbo Transmitters Ltd. to be made available at Derby. | ||
| View original record | 1330 Rm. BY.3/G.24.5.39. HYDRAULIC TRANSMISSION. I attach hereto copy of my memo BY.2/G.24.5.39. which I have written to Sg., and would like Rm/Gry. to arrange a date convenient to us both for one of… | ||
| scan0083 | Hydraulic transmissions and experiences with Turbo Transmitters Limited. | ||
| View original record | BY.2/G.24.5.39. C. Rm. TURBO TRANSMITTERS LIMITED. Sg.7/E.16.5.39. I have had this matter before me as the result of information supplied to Rm/Gry. I have had experience previously with three types… | ||
| scan0084 | Test run of a hydraulic gearbox transmitter from Turbo Transmitters Ltd. | ||
| View original record | COPY. To BY. from Sg. Copy to Hs. re Gearbox. Sg.7/E.18.5.39. On the recommendation of Mr. Minchin I yesterday had a run on a car fitted with what is known as a hydraulic transmitter made by a firm… | ||
| scan0085 | Letter discussing the performance, advantages, and potential applications of a turbo transmission. | ||
| View original record | [Initial in red ink: My] BUSHY CROFT, ANSTIE LANE, COLDHARBOUR, DORKING. DORKING 73164. 7. 5. 3g. Dear Harry. Here is the 'dope' on the turbo transmission which I tried on Friday. I think it quite… | ||
| scan0086 | Engine temperature and fitting a Bentley engine and axle to a car. | ||
| View original record | above it. & get a box temperature of 75/80°C Anyhow have a good look at it. I expect you'll try it soon. The car was a V8 Ford but I'm fitting into it a 4.6 Li Humber soon. It will be fine with a… | ||
| scan0087 | Reprint from the publication 'ENGINEERING' of a paper on a hydro-kinetic power transmitter. | ||
| View original record | 12 in the transmitter was common engine lubricating oil. Conclusion.—The transmitter dealt with above resolves in a satisfactory manner the problem of transmission of power at a torque ratio varying… | ||
| scan0088 | Vehicle road tests, detailing hill-climbing performance, fuel consumption, and transmission behavior, accompanied by illustrative diagrams. | ||
| View original record | 11 standard clutch and gears; and, though acceleration was lively, it was always smooth and progressive, the torque ratio decreasing gradually as road speed increased. Inasmuch as with the… | ||
| scan0089 | Technical paper reprint from the 'ENGINEERING' journal on the Hydro-Kinetic Power Transmitter, with performance tests and component comparisons. | ||
| View original record | 10 COMPARISON OF HYDRAULIC COUPLING, PUMP AND SALERNI TRANSMITTER. | | Duct of Ordinary Hydraulic Coupling | Duct of Ordinary Centrifugal Pump. | Duct of Salerni Transmitter. |--- | --- | --- | --- |… | ||
| scan0090 | Analysis of the design principles and fluid dynamics of a hydro-kinetic power transmitter, including diagrams of fluid flow. | ||
| View original record | 4 a vaned driving element to a vaned driven element rotating relatively to one another at greatly differing and constantly varying speed, it is evident that, if losses of prohibitive magnitude are to… | ||
| scan0091 | Design description of a hydraulic transmitter, focusing on the fluid dynamics and construction of its components. | ||
| View original record | 8 radii of curvature of the inner boundary of the axial cross-section of the hydraulic circuit and the radius of curvature of its outer boundary. It will be seen that in the constructions illustrated… | ||
| scan0092 | Analysis of fluid dynamics within a transmitter, focusing on vane and duct characteristics with accompanying diagrams. | ||
| View original record | 6 stream, and passes from one element to another virtually without shock. At the right of Fig. 3 is a simple epicyclic gear, which is used to reverse the car, and which comprises also a gear ratio… | ||
| scan0093 | Letter to Turbo Transmissions Ltd. arranging a trial of their new hydraulic transmission. | ||
| View original record | 1330. Rm/Gry.7/MH. 31st. May, 1939. Turbo Transmissions Ltd., Aintree Street, Western Avenue, Perivale, MIDDX. For the attention of Mr. Moore. Dear Sirs, We understand from Mr. Sidgreaves that you… | ||
| scan0094 | Letter from Turbo Transmitters rescheduling an appointment to try a transmitter. | ||
| View original record | 1880 TURBO TRANSMITTERS, LIMITED. Aintree Road, Western Avenue, Perivale, MIDDLESEX. DIRECTORS: MAJOR J. C. CHAYTOR, (CHAIRMAN). F. S. H. MORGAN. G. E. B. SHIELLS, (MANAGING). CONSOL. L. D. SIMONDS,… | ||
| scan0095 | Letter to Turbo Transmitters Ltd. to arrange a date to try the Turbo Transmitter. | ||
| View original record | 1330 Rm/Gry.3/MH. 28th. June, 1939. Turbo Transmitters Ltd., Aintree Road, Western Avenue, Perivale, MIDDX. For the attention of Mr. J.S.H.Moore. Dear Sirs, In your last letter you said that you would… | ||
| scan0096 | Follow-up memo regarding scheduling an appointment with Turbo Transmitters Ltd. | ||
| View original record | 1330. To Sg.... from By. By.1/N.28.6.39. c. Rm/Gry. Turbo Transmitters Ltd., Referring to your memo Sg7/E.26.6.39, we offered alternative dates for an appointment in regard to the above, but as these… | ||
| scan0097 | Unaccounted 8% loss of horsepower in the transmission. | ||
| View original record | 1330 ? Rm/TAS. from Rm. c. Rm/Gry. Rm4/R,30.6.39. LOSSES IN THE TRANSMISSION. We have done some very useful work estimating the losses in tyres, and it now appears that we are left with 8% loss of… | ||
| scan0098 | Evaluating a 'Turbo Transmitter' equipped car against a Humber Super Snipe and comparing the system to Ford's. | ||
| View original record | Sg. Hs. BY.S/C.S.7.39. 1330 TURBO TRANSMITTER. Rm/Gry's memo Rm/Gry.6/MR.7.7.39. is a studiously fair presentment of the facts as demonstrated in the trial runs given us at Derby. We took out our own… | ||
| scan0099 | Commentary on the Salerni scheme in comparison to Sinclair's, involving fluid flywheels and epicyclic combinations. | ||
| View original record | - 2 - BY.3/C.8.7.39. There is nothing essentially new in Salerni over Sinclair's scheme, which failed to take hold when tried, but the use of the fluid flywheel and epicyclic combination in the… | ||
| scan0100 | Test report on a Turbo Transmitter fitted to a Humber Super Snipe. | ||
| View original record | To Sg. from Rm/Gry. c. By. c. Ms. c. Cx. W/S. c. Da. c. Da/Hdy. c. Da/Ev. c. Hx. Rm/Gry.6/MH.7.7.39. TURBO TRANSMITTER. Yesterday By., Hdy. and I tried this transmitter fitted to a Humber Super Snipe… | ||
| scan0101 | Review of the drawbacks and technical points of a Turbo Transmitter for potential use in a car. | ||
| View original record | -2- Were there any other major drawbacks ? From a Rolls-Royce point of view; yes. To accelerate even gently from low speeds such as 15 or 20 m.p.h., there is an immediate increase in engine revs with… | ||
| scan0102 | Attributes and disadvantages of a product for an owner who spends most of their time in London. | ||
| View original record | -3- RM/Gry.6/ME.7.7.39. We intend, however, to see whether there is any way in which its attributes, which are considerable for the owner who is most of his time in London, could not be used without… | ||
| scan0103 | Letter to Turbo Transmitters Ltd. regarding the testing of a hydraulic transmission and a potential solid drive feature. | ||
| View original record | 1330 Rm/Gry.1/MH. 10th. July, 1939. J.S.H.Moore, Esq., Turbo Transmitters Ltd., Aintree Road, Western Avenue, Perivale, MIDDX. Dear Mr. Moore, Very many thanks for bringing up the Humber to Derby last… | ||
| scan0104 | Performance and issues of a Turbo Transmitter in a Humber Snipe. | ||
| View original record | gry. 1330. Copy. To By.. from Sg. c. to Hs. (text struck through) Sg4/E11.7.39. re Turbo Transmitter. Many thanks for BY.3/G.8.7.39 with enclosure. This is very interesting to me and I think it was… | ||
| scan0105 | Letter from Turbo Transmitters discussing solid drive arrangements and engine fussiness in comparison to a Humber. | ||
| View original record | 1330 TURBO TRANSMITTERS, LIMITED. Aintree Road, Western Avenue, Perivale, MIDDLESEX. DIRECTORS: MAJOR J.E.D.SHAW (CHAIRMAN). J.S.H.MOORE (MANAGING). COMMDR.H.O.SIMONDS, R.N.RETIRED. E.H.RICHES.… | ||
| scan0106 | Transmission vibration issues in a 10.B.V Coupé and the series of tests conducted to find a cure. | ||
| View original record | 1330 RSH Rm from Mx c. By c. Da TRANSMISSION VIBRATION 10.B.V Coupé suffered from a transmission period in a very marked form on forward drive at 38 to 45 m.p.h. and we carried out a series of tests… | ||
| scan0107 | Continued report on isolating a centre joint using rubber and felt to reduce noise and vibration. | ||
| View original record | 2. Mx.1/MG.9.8.39 continued. the rubber is as soft as possible and has the minimum pre-loading. Rubber is considered to be the most reliable insulating material when used in this exposed position… | ||
| scan0108 | Diagram of a mock-up for a noise-insulated centre bracket for a propeller shaft. | ||
| View original record | CRUCIFORM. FELT RUBBER BUSH. MOCK-UP OF NOISE INSULATED CENTRE BRACKET FOR PROP. SHAFT 10.B.V. S B | ||
| scan0109 | Reviewing transmission options, comparing split and single propeller shafts for various car models. | ||
| View original record | SECRET. 1380 To Rm/Gry. from Ev. c. Rm. e. Rm/FJH. Ev.6/15.11.39. Re Transmission. We have been reviewing the transmission for the various cars in the range in the light of the split prop. shaft of… | ||
| scan0110 | Gearbox and propeller shaft options for the 'Rippletto' and 'Myth' car models. | ||
| View original record | -2- (3) For Rippletto, since the gearbox will be so short, and must be placed close to the clutch to maintain an engine coupling that is short and stiff in bending, a gearbox extension is so long that… | ||
| scan0111 | Letter to C.L. Breeden regarding a plant visit, post-war manufacturing, and testing of Turbo transmitters. | ||
| View original record | 1350 Rm.9/MH. November. 30th. December, 1939. C.L. Breeden, Esq., Messrs. Wilmot-Breeden Ltd., Eastern Works, BIRMINGHAM, 1. Dear Breeden, Thank you very much for entertaining us on Tuesday. I was… | ||
| scan0112 | Letter to C.E. Breeden discussing the market viability and drawbacks of a Turbo transmitter. | ||
| View original record | C.E.Breeden, Esq. -2- 30th. November, 1939. One interesting thing about this transmitter is that it was offered to the American trade in 1936 by the Bendix Company, and actually Bendix added one or… | ||
| scan0113 | Letter discussing a recent conversation about engines and a personal order for a 'River 10'. | ||
| View original record | Potter Street 106-107 1330 DUFFIELD 2348 Rundells Latton near Harlow Essex. DUFFIELD BANK HOUSE, DUFFIELD, NEAR DERBY. 6. 12. 39. Dear R.M. We had a good chat last night & I don't think you needed any… | ||
| scan0114 | Postscript memo discussing the trial of a Moore's Turbo Transmitter. | ||
| View original record | P.S. I tried Moore's Turbo Transmitter again the other day. They have been making improvements in it & there is no doubt it is a very fascinating thing to use. I believe they are making up a number.… | ||
| scan0115 | Letter to G.R.N. Minchin regarding a discussion with Wilmot-Breeden about a Turbo transmitter. | ||
| View original record | 1330 Rm.3/MH. 7th. December, 1939. G.R.N.Minchin, Esq., Rundells, Latton, Near Harlow, ESSEX. Dear Minchin, Many thanks for your note. I had a good talk to Wilmot-Breeden's about the Turbo transmitter… | ||
| scan0116 | Letter from Wilmot-Breeden Ltd to A. Robotham regarding a hydraulic torque converter. | ||
| View original record | 1330 TELEPHONE: CENTRAL 8641 (18 LINES) TELEGRAMS: 'BUMPERS', BIRMINGHAM. WILMOT-BREEDEN LTD EASTERN WORKS BIRMINGHAM 1 MANAGING DIRECTOR'S OFFICE 7th December 1939. A. Robotham Esq. Messrs.… | ||
| scan0117 | Letter discussing potential improvements to a fluid dynamics device, such as a pump or torque converter, and seeking a technical judgement. | ||
| View original record | A. Robotham Esq. 2. 7th December 1939. and by the application of geometric shapes, converging vanes in the pump, and other features, the fluid has substantially a streamline flow, reducing eddies to a… | ||
| scan0118 | Letter discussing the Bendix turbo flywheel gear with an incorporated small epicyclic for an emergency low gear and reverse. | ||
| View original record | 1330 Rm.10/MH. 11th. December, 1939. C.L.Breeden, Esq., Messrs. Wilmot-Breeden Ltd., Eastern Works, BIRMINGHAM, 1. Dear Breeden, Thank you for your letter. Grylls has just handed me a copy of… | ||
| scan0119 | Letter from Peto & Radford to W.A. Robotham regarding a proposed meeting. | ||
| View original record | Works, Dagenham Dock, Essex Depots, London - Manchester - Glasgow TELEPHONE SLOANE 7164. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS DAGENITE, SOWEST, LONDON. Manufacturers of Accumulators for over 50… | ||
| scan0120 | Letter to G.R. Minchin of Messrs Peto and Radford Ltd. regarding potential travel plans and a delayed return. | ||
| View original record | W/5 Rm.12/ML. 23.8.40. G.R.Minchin,Esq., Messrs Peto and Radford Ltd., 50, Grosvenor Gardens, LONDON. S.W.1. Dear Minchin, Thank you for your letter of the 22nd. August. It is just possible that I may… | ||
| scan0121 | Letter to G.R.N. Minchin of Messrs Peto & Radford Ltd. arranging a meeting for Tuesday, September 3rd. | ||
| View original record | Rm.23/ML. 25.8.40. G.R.N.Minchin,Esq., Messrs Peto & Radford Ltd., 50, Grosvenor Gardens, LONDON.S.W.1. Dear Minchin, I now find that I shall definitely be away on Monday September 2nd. but have to be… | ||
| scan0122 | Letter from accumulator manufacturers Peto & Radford concerning meeting arrangements and a trip to Scotland. | ||
| View original record | Works. Dagenham Dock, Essex DEPOTS, LONDON - MANCHESTER - GLASGOW TELEPHONE SLOANE 7164. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS DAGENITE, SOWEST, LONDON. Manufacturers of Accumulators for over 50… | ||
| scan0123 | Letter from accumulator manufacturers Peto & Radford confirming a meeting with W.A. Robotham. | ||
| View original record | Works. Dagenham Dock. Essex DEPOTS, LONDON - MANCHESTER - GLASGOW TELEPHONE SLOANE 7164. 2 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS DAGENITE, SOWEST, LONDON. Manufacturers of Accumulators for over 50… | ||
| scan0124 | Letter of apology to G.N. Minchin of Messrs Peto & Radford Ltd for a missed appointment. | ||
| View original record | 2nd or 3rd Tin Plating on 'BATTERIES' or 'ACCUMULATORS' Rm.9/ML. 5.9.40. G.N.Minchin,Esq., Messrs Peto & Radford Ltd., 50, Grosvenor Gardens, London.S.W.1. Dear Minchin, I must apologise for not… | ||
| scan0125 | Letter from Peto & Radford to W.A. Robotham regarding a discussion about 'Moore's device' and its performance. | ||
| View original record | Works, Dagenham Dock. Essex DEPOTS, LONDON - MANCHESTER - GLASGOW TELEPHONE SLOANE 7164. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS DAGENITE, SOWEST, LONDON. Manufacturers of Accumulators for over 50… | ||
| scan0126 | Cover memo discussing a letter and drawing regarding Turbo Transmitters for a rationalised automobile. | ||
| View original record | Ev. from Rm. 1330 Ellet? Transmission Rm.13/ML.26.9.40. Herewith a letter from Turbo Transmitters, which is self-explanatory, together with a drawing. We do not wish to waste a lot of time on this but… | ||
| scan0127 | Letter discussing progress and solutions for fitting a proposed transmitter, possibly to a vehicle's gearbox or engine. | ||
| View original record | Works, Dagenham Dock. Essex DEPOTS, LONDON - MANCHESTER - GLASGOW TELEPHONE SLOANE 7164. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS DAGENITE, SOWEST, LONDON. [STAMPS: SBAC - SOCIETY OF BRITISH AIRCRAFT… | ||
| scan0128 | Letter from Turbo Transmitters Ltd. discussing fitting a hydraulic transmitter to a car. | ||
| View original record | TURBO TRANSMITTERS, LTD. Aintree Road, Western Avenue, Perivale, MIDDLESEX. DIRECTORS: MAJOR J.E.D.SHAW (CHAIRMAN). J.S.H.MOORE (MANAGING). COMMDR.H.D.E.P.DRUMMOND, R.N.RETIRED. E.H.RICHES. TELEPHONE:… | ||
| scan0129 | Letter to G.R. Minchin of Peto & Radford Ltd. regarding a delay with a torque converter and a request for a servo drive. | ||
| View original record | File with rest of Peto & Radford corres, Rm.3/ML.12.11.40. 12.11.40. G.R.Minchin,Esq., Messrs Peto & Radford Ltd., 50, Grosvenor Gardens, LONDON.S.W.1. Dear Minchin, Thank you for your letter of the… | ||
| scan0130 | Letter to Turbo Transmitters Ltd. requesting detailed drawings for installing a Turbo Transmitter in a Bentley Chassis. | ||
| View original record | c. to Mr. Minchin. c. to Rm. c. to Ev/Tlh. [Handwritten note top left: 1/133D] Ev.4/JH. 12th. November, 1940. [Handwritten note right: elec; transmission] Messrs. Turbo Transmitters Ltd., Aintree… | ||
| scan0131 | Letter outlining the requirements and modifications necessary to install a Turbo-Transmitter into a Bentley chassis. | ||
| View original record | -2- Cont'd:- c. We have no car on which to try the Turbo-Transmitter which has not our servo assisted brakes. It would appear to be necessary to provide in the gearbox a drive for the brake servo, an… | ||
| scan0132 | Cover letter regarding the enclosure of a letter about a Turbo-Transmitter installation on a Bentley Chassis. | ||
| View original record | [Handwritten top left in pencil: 1330] [Handwritten top center in pencil: c. to Rm.] [Handwritten top right in pencil: elec: transmission] Ev.5/JH. 12th. November, 1940. G.N.R. Minchin Esq., Messrs.… | ||
| scan0133 | Explaining the calculation of engine r.p.m. figures based on various tyre rolling circle measurements for an attached chart. | ||
| View original record | 1330 To. Wym/CD. from Ev/JD. c. to. Wym c. to. Rm. c. to. Ev. Chassis Performance Handwritten note: Coymn Can I have these figures on my board. Also 30 GVI & 11 BVI Rm- Car Engine R.P.M. at 60 miles… | ||
| scan0134 | Table comparing axle ratios, tyre sizes, rolling circles, and engine RPM for various cars. | ||
| View original record | Header Row: (1) CAR, (2) AXLE RATIO, (3) TYRE SIZE, ROLLING CIRCLE., (4) MEASURED, (5) STATIC CHART., (6) AT 30 M.P.H. CHART, (7) EST. AT 60 MPH., ENGINE R.P.M. AT 60 M.P.H., (8) MEASURED, (9)… | ||
| scan0135 | Chart showing engine R.P.M. for various cars at 60 M.P.H. | ||
| View original record | 1330 Chas To. Wym/GB. from Ev/JD. Ev/JD.6/GAB.3.11.43. c. to. Wym. c. to. Rm. WYNN Please put on my board but only ratios exactly as run at present Rm CLAN CARS Please receive herewith a print of… | ||
| scan0136 | Comparison table of engine RPM at 60 MPH for various cars based on tyre size and axle ratio. | ||
| View original record | ENGINE R.P.M. AT 60MPH CLAN GARAGE CARS | CAR | TYRE SIZE | ROLLING CIRCLE | ROLLING CIRCLE | ROLLING CIRCLE | ROLLING CIRCLE | AXLE RATIO | RPM AT 60MPH | RPM AT 60MPH | RPM AT 60MPH |… | ||