Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Forwarding of correspondence on Superflexit oil pipes. | ||
| View original record | 3050 To Ev. from Rm/MHR. Copy to Rm/HH. Rm/MHR.3/XT.31.10.41. SUPERFLEXIT OIL PIPES --------------------- Memos addressed to the writer on this subject are being forwarded to Rm/GB, who is in charge… | ||
| img002 | Status update memo listing various jobs in hand, including work on clutches, gear levers, and wheels. | ||
| View original record | VSA 1st November, 1935. Jobs in Hand. (1) Spectre Clutch - (a) Stiffer plate Ms.2179 - sent to GWH. (b) B. & B. plate - try on 33-EX. (c) Engine tie links - require testing on 1-S-1. (d) 9º cones and… | ||
| img003 | Letter to Cadillac regarding engineer visits, standardization of parts, and brake systems. | ||
| View original record | File Exptl. Dept. HS/Rm.12/KW. 4th November, 1935. E.W. Seaholm, Esq., The Cadillac Motor Car Co., Detroit, Michigan, U.S.A. Dear Mr. Seaholm, I wrote to Olley a week ago to tell him that two of our… | ||
| img004 | Letter discussing chassis brakes, a motor show, and business in the States. | ||
| View original record | -2- HS/Rn.12/KW.4.11.35. I think undoubtedly the weakest feature of the chassis for our conditions here were the brakes, but I know that somehow these are not called upon to do the work in America… | ||
| img005 | Letter to Ford Motor Company requesting an introduction for a colleague and discussing radiator shutters. | ||
| View original record | File Exptl. Dept. HS/Rn.14/KW. 4th November, 1935. A.R. Smith, Esq., The Ford Motor Company Ltd., Dagenham, Essex. Dear Mr. Smith, Mr. Grylls, who works with me, will arrive in America in about 10… | ||
| img006 | Letter of introduction for two engineers, Messrs. Day and Grylls, visiting various automotive companies in the USA. | ||
| View original record | File Ex'tl. Dept. HS/R.15/KW. 4th November, 1935. S.G. Bates, Esq., Chief Engineer, The Hudson-Essex Co., Detroit, Michigan, U.S.A. Dear Mr. Bates, Messrs. Day and Grylls, two of our Engineers, are… | ||
| img007 | List of information required for an experimental visit to the United States in 1935. | ||
| View original record | To Hs/Gry. USA Hs/Rm.11/KW.4.11.35. Information Required on Experimental visit to United States, 1935. The following is a list of points in which we are particularly interested :- (1) Gearbox chunking… | ||
| img008 | List of engineering topics for discussion or investigation, covering engine efficiency, supercharging, and chassis components. | ||
| View original record | -2- Hs/Rm.11/KW.4.11.35. (6) Any information with regard to the relative volumetric efficiency of the best side valve engine producible when compared with overhead valve engines of the 20/25 type. (7)… | ||
| img009 | Competitor vehicle features, engine trends, and performance analysis of American cars. | ||
| View original record | -3- Hs/Rm.11/KW.4.11.35. (18) Variable pitch radiator fans. These I understand are only being fitted to standard cars. (19) The latest information on suspension generally and riding. (20) The general… | ||
| img010 | Visits to various US automotive and parts manufacturers for information gathering and to address component issues. | ||
| View original record | -4- Hs/Rm.11/KW.4.11.35. The Harrison Radiator Corporation at Lockport, New York, should certainly be visited as their installation is excellent and they are right up to date on the latest oil coolers… | ||
| img011 | Letter of introduction for Mr. Grylls to visit The Gemmer Manufacturing Co. regarding their interest in Marles steering. | ||
| View original record | USA The Adamant Engineer Co.Ltd., Dallow Road, Luton, Beds. 5th November, 1935. A.T. Phillips Esq., c/o. The Gemmer Manufacturing Co., Detroit, Michigan, U.S.A. Dear Mr. Phillips, The bearer of this… | ||
| img012 | Letter from Ford's General Manager to Mr. Robotham regarding arrangements for a Mr. Grylls to visit Ford's Engineering Department. | ||
| View original record | Ford Motor Company, Ltd. DAGENHAM, ESSEX. TELEPHONE, RAINHAM 300. 6 Nov 1935 A-2 W A Robotham Esq Messrs Rolls-Royce Limited DERBY Dear Mr Robotham: In reply to your letter of the 4th instant, I shall… | ||
| img013 | Letter to Ford Motor Co. Ltd. arranging an introduction for Mr. Grylls to Mr. Sorensen. | ||
| View original record | USA Exptl. Dept. HS/RM.20/KW. 8th November, 1935. A.R. Smith Esq., The Ford Motor Co.Ltd., Dagenham, Essex. Dear Mr. Smith, Thank you for your letter of the 6th November. I think, as you suggest, the… | ||
| img014 | Failure of metal bearings during testing and an interest in an alternative. | ||
| View original record | To S.H. Grylls, Esq., c/o The Book Cadillac Hotel, Detroit, Michigan, U.S.A. U S A Hs/Rm.35/KW.11.11.35. We are not having the success with Hall's metal bearings that we anticipated. At the end of 46… | ||
| img015 | Letter to S.H. Grylls discussing front axle control, 12-cylinder engine costs, and crankshaft dampers. | ||
| View original record | USA S.H. Grylls, Esq., The Book Cadillac Hotel, Detroit, Michigan, U.S.A. Hs/Rm.12/KW.13.11.35. We are interested in front axle control with flexible springs by means of radius rods. We notice Hudsons… | ||
| img016 | Alternative methods for finishing connecting rods and requesting a cost analysis for parts. | ||
| View original record | -2- Hs/Rm.12/KW.13.11.35. Another point in which I am interested is the method of matching up unmachined connecting rods. It seems ludicrous to machine our rods all over when we drill up for the oil… | ||
| img017 | Request for information, price, and delivery date for a Lincoln Zephyr V-12 car. | ||
| View original record | S.H. Grylls, Esq. c/o The Book Cadillac Hotel, Detroit, Michigan, U.S.A. USA Hs/Rm.14/KW.14.11.35 We note that in the November issue of the S.A.E. Journal there is a photograph of the Lincoln Zephyr,… | ||
| img018 | Letter from Packard Motor Car Company to Rolls-Royce Ltd. regarding an upcoming visit. | ||
| View original record | USA PACKARD MOTOR CAR COMPANY DETROIT MICHIGAN November 18, 1935 Rolls-Royce Ltd. Derby, England Gentlemen: Attention of Mr. W. A. Robotham We have your letter of November 4th regarding the visit of… | ||
| img019 | Cablegram from Detroit about using rubber shackles to fix tire noise, suspension silence, and steering wander. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM 1320 ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM. 1.… | ||
| img020 | Circulating a telegram from America discussing various automotive design features. | ||
| View original record | X usa To Sg. from Hs. c. to HOr. c. to E. c. to By. Hs.10/kW.21.11.35. We give below a copy of a telegram received from America :- "Robotham, Olley in favour wishbone longitudinal torsion bars for… | ||
| img021 | Night letter cablegram regarding Olley's objections to front suspension systems on various American and European cars. | ||
| View original record | FILE usa NIGHT LETTER CABLEGRAM DAY & GRYLLS, BOOK CADILLAC HOTEL, DETROIT, MICHIGAN, U.S.A. WHAT ARE OLLEY'S OBJECTIONS TO CITROEN TORSION ROD FRONT SUSPENSION. DETAILS HUDSON FRONT TORQUE ARM… | ||
| img022 | Series of questions about Buick's quietness, rubber shackles, and volumetric efficiency of different valve types. | ||
| View original record | (2) RESULT. WHY IS BUICK QUIET WITHOUT RUBBER SHACKLES ? ANY COMPARATIVE FIGURES OF BEST SIDE VALVE VOLUMETRIC EFFICIENCY COMPARED WITH OVERHEAD IN LINE. WHAT IS FIGURE OF | ||
| img023 | List of discussion points or topics, possibly from a meeting. | ||
| View original record | ! (3) MERIT CADMIUM BEARINGS COMPARED WITH WHITE METAL WHAT DOES HOPKINS THINK OF HALL'S METAL, [DOES CROSS IN FRAME DO ANY GOOD AFTER BODY MOUNTED.] - E ROBOTHAM; | ||
| img024 | List of queries regarding American automotive manufacturing methods and components. | ||
| View original record | S.H. Grylls, Esq. The Book Cadillac Hotel, Detroit, Michigan, U.S.A. USA Hs/Rm.5/KW.21.11.35. Will you please let us know the accepted high-class American method of finishing connecting rods. Do they… | ||
| img025 | Outlining travel arrangements for Mr. Ward of Park Wards for his trip to the United States. | ||
| View original record | To Rm. Hs.20/KW.21.11.35. [Handwritten Annotation]: Park It has been arranged that Mr. Ward, of Park Wards, is going to the States. He will sail on the "Majestic" on Wednesday next, the 27th inst.,… | ||
| img026 | Night letter cablegram to Grylls in Detroit regarding torsion rods, wishbones, and cadmium bearings. | ||
| View original record | NIGHT LETTER CABLEGRAM GRYLLS, BOOK CADILLAC HOTEL, DETROIT, MICHIGAN, U.S.A. TORSION ROD SCHEME NECESSITATES WISHBONES AT RIGHT ANGLES TO CHASSIS CENTRE LINE DOES THIS SPOIL STEERING. WHAT IS… | ||
| img027 | Travel and work arrangements for studying rust prevention on steel coachwork. | ||
| View original record | (2) WARDS SAILING MAJESTIC 27th TO STUDY RUST PREVENTION STEEL COACHWORK. STAYING VANDERBILT HOTEL NEW-YORK. WRITE HIM. DESIRABLE PEOPLE WITH WHOM TO CONTACT AND WHERE AND COLLABORATE WITH HIM.… | ||
| img028 | Telegram from America discussing automotive technologies and competitor analysis. | ||
| View original record | USA File To Sg. from Hs. c. to Mer. c. to E. c. to Ey. We give below a copy of a telegram received from America :- "Robotham, Olley in favour wishbone Longitudinal torsion bars for cheapness and… | ||
| img029 | Letter concerning a trip to America to research rust prevention on bodies and a query about cadmium versus lead bronze bearings. | ||
| View original record | S.H. Grylls, Esq., The Book Cadillac Hotel, Detroit, Michigan, U.S.A. Mr. Park of Park Wards is sailing for America on the "Majestic" on the 27th November. He is staying at the Vanderbilt Hotel, New… | ||
| img030 | Telegram received by telephone from Detroit, Michigan, detailing gear design specifications. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. RECEIVED STAMP: MD 23 NOV 1935 Time Received: 8/53 Date: 23.11.35 To: Roycar Derby By: fs from: Detroit Michigan RR Ind Hives clunking try ten twenty… | ||
| img031 | Telegram received by telephone from Detroit regarding GM research and cadmium. | ||
| View original record | RR. 1583. 1M. BKS/S-2-33 2.700L. ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 8.58 Date: 23.11.35 To: By: JD from: Detroit not be latted thy a600 Twenty minutes smaller cadmium… | ||
| img032 | Transcribing a cablegram received from Grylls in the U.S.A. | ||
| View original record | Sg. From Hs/Rm. c. to Tof. c. to E. c. to By. Hs/Rm.1/MA.23.11.35. The following is a cablegram we have received from Grylls in the U.S.A. - *HIVES. CHUNKING TRY TEN TWENTY PITCH STUB IN V LUGS SHAFT… | ||
| img033 | Night letter cablegram sent to Grylls at the Book Cadillac Hotel in Detroit, USA. | ||
| View original record | vsa NIGHT LETTER CABLEGRAM 25.11.35. GRYLLS, BOOK CADILLAC HOTEL, DETROIT, MICHIGAN, U.S.A. PULLER INFORMATION REQUIRED IN NIGHT LETTERS. BRING BACK SAMPLE RUBBER SHACKLES ALSO COPPER LEAD STRIP.… | ||
| img034 | Cablegram from Detroit comparing competitor vehicle components and technologies. | ||
| View original record | Form No. 6 usa WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel.… | ||
| img035 | Relaying the content of a telegram regarding a steering box issue on a LaSalle vehicle. | ||
| View original record | USA To [REDACTED] c. Is. [REDACTED] Dec. 7 1935 E/Lid.1/HP.22.11.36 We give below copy of a telegram we have received today from US, for your information:- "ELLIOTT BRONZE STEERING BOX SAID TO REMOVE… | ||
| img036 | Request for information on G.M. side valve combustion chamber designs, parts, and performance figures. | ||
| View original record | USA S.H. Grylls, Esq., The Book Cadillac Hotel, Detroit, Michigan, U.S.A. Hs/Smth.7/KW.26.11.35. Dear Gry., Here's a job for you; Will you get from G.M. full dope on the best side valve combustion… | ||
| img037 | Cablegram from Detroit regarding copper-lead strip bearings and steering geometry for a Bentley. | ||
| View original record | Form No. 6 WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel. No.… | ||
| img038 | Cablegram received from Mr. Grylls in the U.S.A. regarding copper lead strip bearings and steering geometry. | ||
| View original record | To Sg.from Hs/Rm. c. to Wor. c. to B. c. to By. The following is a cablegram we have received from Mr. Grylls in the U.S.A. :- "Robotham G.W. have successful copper lead strip running white metal… | ||
| img039 | Cablegram from Detroit regarding cadmium bearing shells, production, and engine smoothness comparisons with competitors. | ||
| View original record | Form No. 6. usa WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM 1320 1935 NOV 27 AM 7 35 ANGLO-AMERICAN TELEGRAPH Co., LD. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET… | ||
| img040 | Cablegram received from Mr. Grylls in the U.S.A. regarding cadmium bearing shells and engine performance. | ||
| View original record | To Sg. c. to Wor. c. to E. c. to By. USA Hs/Rm.10/KW.27.11.35. The following is a cablegram received from Mr. Grylls in the U.S.A. :- "KISILINE SOLD ON CADMIUM ON PRODUCTION 18 MONTHS MADE BY FEDERAL.… | ||
| img041 | Manufacturing process for bearings and comparing opinions from other auto manufacturers. | ||
| View original record | USA S.H. Grylls, Esq., The Book Cadillac Hotel, Detroit, Michigan, U.S.A Hs/Rn. 8/KW. 27.11.35. As we shall probably go wrong in the material, the method of finishing, heat treatment, etc. of the… | ||
| img042 | Night letter cablegram about Stromberg carburetors flooding on gradients and requesting a solution. | ||
| View original record | USA . NIGHT LETTER CABLEGRAM. GRYLLS. HOTEL BOOK CADILLAC, DETROIT, MICHIGAN, U.S.A. WE FIND THAT STROMBERGS FLOOD ON ONE IN FIFTEEN GRADIENTS OUR STANDARD PRACTICE IS ONE IN FIVE. HAVE THEY ANY… | ||
| img043 | Comparison of the smoothness of Cadillac V8 and V12 engines. | ||
| View original record | -2- BELIEVE CADILLAC VEE EIGHT AS SMOOTH AS VEE TWELVE. ROBOTHAM, | ||
| img044 | Forwarding a telegram regarding torsion bars, steering worms, and unequal links. | ||
| View original record | USA To Sgs and Wors c. Hs. By [text struck through] E/L1d.1/HP.27.11.35. We give below copy of a telegram we have received today from Da, for your information:- "ELLIOTT PARALLEL TORSION BAR NO… | ||
| img045 | Issues with the Dubonnet suspension system compared to a wishbone type, based on experiences with Chevrolet. | ||
| View original record | Pages 2 of 3 in Tracing Office To Hs Sy WoV E By Hdy USA BOOK Cadillac 17-11-38 We got here on Friday afternoon and had dinner with Oy. Arranged a visit GM on Monday. Oy has been working for 12 months… | ||
| img046 | Car handling, wandering issues, and suspension comparisons. | ||
| View original record | 2 For the first reason the Evenkeel torsion bar is out of the picture. He lent us a long report on handling of cars including causes of wandering, oversteering and understeering. The wandering… | ||
| img047 | Notes on car design trends observed at the Detroit Motor Show. | ||
| View original record | We also visited the Detroit Motor Show where several chassis were on view. Noticeable tendencies were towards (1) 'Built in' front with built in headlamps, only much less ugly than an original… | ||
| img048 | Diagrams comparing two suspension geometries and their effect on oversteer and understeer. | ||
| View original record | 3 Of interest in connection with the Goto a Works car on the following problems [Top Diagram] S Springs on axle oversteer and wander [Bottom Diagram] S Springs on axle understeer only difference being… | ||
| img049 | Analysis table of factors affecting car handling during turns and braking. | ||
| View original record | FACTORS WHICH AFFECT HANDLING OF CARS INVESTIGATION ON STARTING TURN CONDITION, OVERSTEER, UNDERSTEER, REMARKS Weight Distribution, R Heavy, F Heavy Tyre Pressure, R High, F High Tyre Loads, R low,… | ||
| img050 | Findings from a visit to Cadillac and Chevrolet in America regarding engine and chassis components. | ||
| View original record | USA To Sg. c. to Wor. c. to E. c. to By. c. to Hdy. The following is a copy of a memo, received from Hm/Gry. from America, dated 16.11.35. - "We went to Cadillac's to-day and saw there in addition to… | ||
| img051 | Diagram illustrating the geometry and effective centres of a linkage or frame system. | ||
| View original record | EFFECTIVE CENTRE h 1.5 h .75 l l FRONT REAR NEW FRAME BRACKET REQUIRED EFFECTIVE CENTRE | ||
| img052 | Report comparing competitor suspension and cooling systems, with notes on internal designs. | ||
| View original record | -2- Hs/Rn.33/KW.28.11.35. (4) The only reason G.M. continue with Dubonnet suspension is that they have spent 3,000,000 dollars on tools and hate to waste it. It was originally a sales feature that… | ||
| img053 | Comparing a Cadillac to a Bentley Mark V, detailing performance, fuel consumption, and temperature readings from a test run. | ||
| View original record | hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO., INC RALPH HITZ PRESIDENT Telephone Cadillac 7000 HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ-CARLTON, ATLANTIC… | ||
| img054 | And diagrams concerning rubber shackles, chassis clearance, and air ram mounting. | ||
| View original record | (3) I gather that rubber shackles are essential to you now, although for bad clearance at full bottom of left. In front view the spring eye (not clear on my, until ill?) is ... to the chassis centre… | ||
| img055 | The performance and suspension of a Torsionless coupe and V12 model. | ||
| View original record | hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO • INC RALPH HITZ - PRESIDENT HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ-CARLTON, ATLANTIC CITY, VAN CLEVE,… | ||
| img056 | Notes on issues concerning road shocks affecting roll centre and brake performance related to oil temperature. | ||
| View original record | (8) We have heard from our Photostat copies of drawings as they show that road shocks on certain Co. exist which create change due to the high roll centre. By devising this accordingly is to do so for… | ||
| img057 | From a visit to Cadillac and Chevrolet, discussing engine crankcase ventilation, acid fumes, and oil performance. | ||
| View original record | hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO., INC RALPH HITZ - PRESIDENT HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ-CARLTON, ATLANTIC CITY, VAN CLEVE,… | ||
| img058 | And diagrams concerning rubber shackles, tyre noise, and suspension geometry. | ||
| View original record | (3) I gather that rubber shackles are essential for tyre noise although I had discussion of this before ?Cff. The point about the spring eye (not clear in my last C.R.S) is that the shackle centre is… | ||
| img059 | Oversteer and understeer at the GM Proving Ground, spring softness, and a formula for roll stability. | ||
| View original record | vsa 7 To Sg. c. to Wor. c. to E. c. to By. c. to Hdy. The following is a copy of a memo. received from Hs/Gry. in America, dated 20.11.35 :- "We spent yesterday at the G.M. Proving Ground where Gy.… | ||
| img060 | Visit to Cadillac, discussing engine comparisons, design choices, and material experiments. | ||
| View original record | To-day we returned to Cadillacs and talked to Seaholm and some others. The Cadillac expert knows nothing about chucking except small clearances, and was greatly surprised when I demonstrated that the… | ||
| img061 | Analysis of flywheel designs and a comparative study of various American car engines. | ||
| View original record | -3- These were removed by torsional flexibility in the flywheel. No crank damper is fitted at the front end. The production engines with an ordinary flywheel and no damper are rough, but the engine… | ||
| img062 | Brief note on the connecting rods of a Cadillac V-8 engine. | ||
| View original record | -4- Ha/Ra.23/KW. 4.12.35. The con. rods on the Cadillac V-8 are very and split at 35° to the centre line. Ha/Gry. | ||
| img063 | Blueprint detailing a flywheel design with torsional and lateral ratings, compared to a Cadillac. | ||
| View original record | FLYWHEEL VS CADILLAC SECTION A 4.5" RAD 6 OFF SPRING PLATES GIVING TOTAL OF 50 LBS .32 WASHERS L = .18 I = 1890 LBS IN 2 TORSIONAL RATING 1.5 X 10^6 LBS INS/RADIAN LATERAL .003 FOR 100 LBS. | ||
| img064 | Car performance and stability, including comparisons between models and a formula. | ||
| View original record | hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO., INC. RALPH HITZ - PRESIDENT Telephone Cadillac 8000 HOTELS: NEW YORKER, LEXINGTON, NEW YORK; NETHERLAND PLAZA, CINCINNATI; RITZ CARLTON,… | ||
| img065 | Report comparing Cadillacs and other cars, noting engine noise, chassis mounting issues, and bearing experiments. | ||
| View original record | Today we returned the Cadillacs - Father G. Hallam and Kenham both ran them. The Cadillac report shows nothing about chunking except main clearances & I was greatly surprised when I demonstrated that… | ||
| img066 | Engine failures, corrosion, and vibrations, comparing Pontiac, Cadillac V12, and V8 engines. | ||
| View original record | (2) A Telephone Cadillac 3000 hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO. INC RALPH HITZ PRESIDENT HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ CARLTON,… | ||
| img067 | Comparing engine specifications and discussing design considerations for a V8 engine. | ||
| View original record | was removed by torsional flexibility in the flywheel. A crank damper is fitted at the front end. The production engine with no ordinary flywheel and no damper are rough but the engine with a cosmic… | ||
| img068 | Design drawing and analysis of a flywheel, possibly comparing it to a Cadillac component. | ||
| View original record | A2 WASHERS PC. YB 6 SPRING PLATES GIVING TOTAL OF 750 lbs I = 1890 lbs in² TORSIONAL RATING 1.3 * 10^6 lbs ins / RADIAN LATERAL " .003 for 100 lbs 6 OFF 4.5 RAD Section 'A' 'A' Flywheel Vs Cadillac | ||
| img069 | On Book-Cadillac Hotel letterhead discussing and comparing various engine features, including tappets and oil cooling systems. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (H) President 6 (circled) The GM side valve engines… | ||
| img070 | Findings from a visit to the U.S.A. regarding tyre noise, suspension experiments, and torsion bars. | ||
| View original record | To Sr. and Wor. c. Hs. Hy. RMC. USA Re Visit of Da. and Grylls to U.S.A. Herewith attached are copies of two letters from Da. dated 17th and 18th November. Tyre noise effects seem to be imputed to… | ||
| img071 | From Detroit discussing competitor frame construction and a comparison of Dubonnet and wish-bone suspension systems. | ||
| View original record | COPY. (Memo. from Da.) DETROIT. 17th. November, 1935. To E. from Da. Saw the Detroit Motor Show yesterday. La Salle have abandoned rivets on their frame and now weld everything up. Olley says rivets… | ||
| img072 | Report page discussing vehicle handling issues, including low-speed wobbles, steering, and tyre noise. | ||
| View original record | -2- 3) Very liable to low speed wobbles. 4) Heavier. 5) Undoubtedly more costly. 6) May have a rolling point below the ground, though this can be corrected by inclining the main lever bearing. (The… | ||
| img073 | From Detroit discussing Chevrolet's suspension systems, associated costs and technical issues. | ||
| View original record | COPY. (Memo.from Ba.) DETROIT. 18. November, 1935. To E. from Ba. We have had a discussion to-day with Olley and Fraser, the latter being the chassis engineer of Chevrolets. Fraser has confirmed what… | ||
| img074 | Solutions for vehicle joggle, tyre noise, and rear-axle steering issues. | ||
| View original record | -2- relative to the steering gear itself on this point, but Olley seems fairly certain that the considerable wheel movement which we know in our scheme is the principal cause of our joggles. We shall… | ||
| img075 | Description of Chevrolet's method for fitting brake linings without rivets, with a postscript on shock damper mounting. | ||
| View original record | -3- Chevrolet have developed a method of fitting brake linings without rivets which they say is quite successful. It consists of moulding the lining to a strip of steel, which is formed with steel… | ||
| img076 | Faults of the Skinner Slide Valve Engine and requesting information on Packard's experience with it. | ||
| View original record | S.H. Grylls, Esq. Hotel Book-Cadillac, Detroit, Michigan, U.S.A. We have had a man here trying to interest us in the Skinner Slide Valve Engine. It is an American invention in which two… | ||
| img077 | Tyre noise effects and experiments with rubber body mountings. | ||
| View original record | To E. from Sg. Copy to Wor.Hs. BY.RHC.C/Cx. Visit of Ds. and Grylls to USA. Referring to E.3/HP.28.11.35, tyre noise effects seem, as you say, to be imputed to transmission through the suspension and… | ||
| img078 | Cablegram from Detroit reporting on the rough performance of a Zephyr and plans to test a V8 Cadillac. | ||
| View original record | Form No. 6. USA WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel.… | ||
| img079 | Night letter cablegram requesting technical information and opinions on competitor vehicles like Packard and Zephyr. | ||
| View original record | USA 30.11.35. NIGHT LETTER CABLEGRAM Grylls, HOTEL-BOOK-CADILLAC, DETROIT,MICHIGAN, U.S.A. WE WANT TECHNICAL INFORMATION REGARDING EIGHTS AND TWELVES NOT EXPRESSIONS OF OPINION. WHY IS ZEPHYR ROUGH… | ||
| img080 | Competitor vehicle analysis, focusing on steering, engine performance, and reliability. | ||
| View original record | S.H. Grylls, Esq., Book-Cadillac Hotel, Detroit, Michigan, U.S.A. usa Confirmatory tests show that the La Salle steering is infinitely better than anything we have ever been able to produce. It is not… | ||
| img081 | Tyre noise, the effectiveness of rubber shackles, and referencing American cars. | ||
| View original record | -2- Hs/Rn.4/KW.30.11.35. story. With regard to tyre noise, we want the whole story. It is no good saying that rubber shackles are essential for the elimination of tyre noise when we find that half the… | ||
| img082 | Cover note attaching a memo dated 19.11.35 which was received from America. | ||
| View original record | To Sg. Copy to Mr. Hs. BY. [REDACTED] E/Lid.1/MN.3.12.35. [Signature: R Hartindale] [Signature: Ron & Hardy] We attach herewith copy of a memo. dated 19.11.35, which we have received from Da. in… | ||
| img083 | Steering gear difficulties, particularly with the bronze box, and observations on oversteering and understeering. | ||
| View original record | COPY. (Memo. from Da.) DETROIT. 19. November, 1935. To E. from Da. Steering Gear. It is suggested that one of the difficulties in our steering is the bronze box. Here they preload the worm bearings to… | ||
| img084 | Competitor steering and suspension designs, including Chevrolet and Citroen, and modifications to worm gear shapes. | ||
| View original record | -2- plain bearings on the layshaft and that the equivalent of this friction could be put on our layshaft by a brake. Against this has to be set the fact that both the Chevrolets we tried to-day… | ||
| img085 | Competitor vehicle suspension designs (Buick, Cadillac), tyre noise (Firestone), and a test drive of a Hudson. | ||
| View original record | -3- As regards the quietness of the Buick the tyre people say they have noticed that torque tube cars are quieter than Hotchkiss drive, and attribute it to the springs being shackled at both ends.… | ||
| img086 | Page discussing a formula for the angle of roll and commenting on Hudson suspension systems. | ||
| View original record | -4- α = F x h₁ / (s²l²/2 + Wh₂ - Wh₁) The above formula (G.M.) for angle of roll, shows that with too flexible conventional front springs, the car may have no roll stability at all. Olley hates this… | ||
| img087 | Night letter cablegram to Grylls in Detroit, USA, requesting particulars for measuring apparatus. | ||
| View original record | USA 4.12.35. NIGHT LETTER CABLEGRAM. GRYLLS, HOTEL BOOK-CADILLAC, DETROIT, MICHIGAN, U.S.A. MEASURING APPARATUS PARTICULARS REQUIRED FOR INITIAL DEFLECTIONS AND ROLLING RATINGS. LESLIE. | ||
| img088 | Cablegram from Mr. Grylls in the U.S.A. comparing twelve and eight-cylinder engines. | ||
| View original record | To Sg. c. to Wor. c. to E. c. to Hy. Hs/Rn. & /KW. 6.12.35. The following is a Cablegram received from Mr. Grylls in the U.S.A. :- "Twelve smoother all conditions than orthodox Vee Eight but Eight can… | ||
| img089 | Telegram from Detroit discussing engine smoothness, comparing twelve and eight-cylinder designs, and flywheel flexibility. | ||
| View original record | Copy & circulate ROLLS-ROYCE LTD. ELEGRAM RECEIVED BY TELEPHONE. Time Received: 9-15 Date: 5.12.35 To: NLT Roycar Derby By: EW from: Detroit michigan 4th bl Robotham twelve smoother all conditions… | ||
| img090 | Telegram received by telephone from Detroit regarding features of the Zephyr. | ||
| View original record | No. 144A. (12 BKS.) (48404-10-9-33) 3/9720/2. (t) ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received Date 5/12/35 To By JD from Detroit because up to date features stop zephyr rough… | ||
| img091 | Night letter cablegram to Grylls in Detroit regarding carburettor flooding and hydraulic tappet adjusters. | ||
| View original record | U S A 5.12.35. GRYLLS, NIGHT LETTER CABLEGRAM HOTEL BOCK-CADILLAC, DETROIT, MICHIGAN, U.S.A. 20/25 CARBURETTER TYPE DB-42 INCH AND QUARTER CHOKE PHANTOM INCH AND FIVE SIXTEENTHS. FLOODING ON GRADIENTS… | ||
| img092 | Night letter cablegram with a list of technical queries. | ||
| View original record | V S A 6.12.35. CRYLLS, NIGHT LETTER CABLEGRAM. HOTEL BOOK-CADILLAC, DETROIT, MICHIGAN, U.S.A. PARTICULARS REQUIRED AMOUNT OF BELL MOUTHING NECESSARY LEAD BRONZE BEARINGS. ALSO SILENCER MATERIAL USED… | ||
| img093 | Series of questions about cooler matrix back pressure and clutch plate cushioning. | ||
| View original record | (2) COOLER. DOES BACK PRESSURE OF MATRIX INCREASE GREATLY WITH USE ? FULL PARTICULARS BEST BIG LONG CLUTCH REQUIRED WHAT IS MINIMUM SATISFACTORY CENTRE PLATE CUSHIONING ? ROBOTHAM | ||
| img094 | Request for the latest particulars and specification of spring interleaf rubber used in shackles. | ||
| View original record | (3) LATEST SPRING INTERLEAF PARTICULARS AND SPECIFICATION OF RUBBER USED IN SHACKLES REQUESTED. ROBOTHAM; | ||
| img095 | From the USA discussing variable speed fans, bearing materials, and methods to prevent drivetrain chunking. | ||
| View original record | USA To MG. c. to Mor. c. to K. c. to By. c. to Hdy. HM/R./W/KW.6.12.35. The following is a copy of a memo. received from Hm/Gry. in the U.S.A. dated 25th November :- "With regard to variable speed… | ||
| img096 | Gasket design, steering shock elimination, and induction system porting. | ||
| View original record | -2- He/Rm.9/KW.6.12.35. (3) They have cured all gasket troubles by a gasket only touching over a very small area, and hence having high unit pressure, made thus :- .025 COPPER .015 THICK & .015 PROUD… | ||
| img097 | Report page detailing a fix for rear main bearing leaks and observations on a Lincoln Zephyr engine. | ||
| View original record | -3- HS/Rm.9/KW.6.12.35. (6) They have entirely cured rear main bearing leaks by a complete groove in the bearing and 3 drain holes in the lower half followed by a two row flinger - PIPE DIPPING INTO… | ||
| img098 | Supercharger worm drives and engine smoothness, with comparisons to competitors' vehicles. | ||
| View original record | -4- HS/Rm.S/KW.6.12.35. (s) The only way Graham have succeeded in getting their supercharger worm drive to remain quiet is by using straight sided rack teeth made only by the Michigan Tool Co. These… | ||
| img099 | Letter on Book-Cadillac Hotel stationery regarding car performance, fans, and bearing materials. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel C/o C.T.S. Swell. G. Ratcliffe Sg Wdl E By Hdg K.W. Please circulate… | ||
| img100 | And a diagram discussing gasket design, materials, and oil leak prevention. | ||
| View original record | They are made by Federal Mogul in Detroit & I wrote to them for their booklet. (2) As regards chassis they have found (a) There is a critical speed which is necessary to prevent oil leak; varying for… | ||
| img101 | And diagrams concerning chassis and exhaust system design on hotel letterhead. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz President (2) (4) The channels, I believe, chassis… | ||
| img102 | And a diagram about changes to a casing, bearings and chassis. | ||
| View original record | 6 They have actually used the main casing with a complete groove in the lower half. 3 chassis were in the lower half. Wheeled by a two row pipes. (Diagram annotation) pipe dipping into oil in bottom… | ||
| img103 | On hotel letterhead regarding supercharger gears, engine tests, and roughness comparisons between different vehicles. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz President 5 (F) The only way Frazer have found to… | ||
| img104 | Cablegram from Detroit regarding a comparison of engine designs and features. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel. No.… | ||
| img105 | Telegram received by telephone concerning work on a Winton Compressor. | ||
| View original record | No. 144A. (113 Bk(s).) 3-9730-2. MD 7 DEC RECEIVED 1011 USA ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 1.21 Date: 7-12-25 To: Royces Derby By: J.W. from: Continental Winton… | ||
| img106 | Cablegram requesting throat diameters for 'Twentyfive' and 'Spectre' down-draught carbureters. | ||
| View original record | Form No. 6. USA WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM 1320 ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1.… | ||
| img107 | Findings from visits to Cadillac and G.M. regarding tyre noise, engine options, and gearbox design. | ||
| View original record | To Sg. c. to Wor. c. to E. c. to By. c. to Hdy. c. to RHC. Hs/Rm.3/WJ. 7.12.35. The following is a copy of a memo received from Hs/Gry. in America, dated 23.11.35. I spent Thursday at Cadillac and… | ||
| img108 | Gear, bearing, and material considerations for engine and transmission components. | ||
| View original record | -2- enough to finish hob or broach. He suggests also use of a cast iron cap. (2) The gears should have the splines finished first and the gear teeth operation done with the gear mounted on a splined… | ||
| img109 | The manufacturing process and performance of flanged engine bearings, with comparisons to those used by Pontiac, Allison, and G.M. | ||
| View original record | -3- Hs/Rm.3/WJ.7.12.35. Cont'd. planing to the required thickness of the steel (which must not exceed about 050) and the bearing surface the resulting strip is rolled round a knurl to the required… | ||
| img110 | From a visit to Cadillac and GM regarding vehicle noise reduction and suspension. | ||
| View original record | hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO., INC. RALPH HITZ, PRESIDENT HOTELS: NEW YORKER, LEXINGTON, NEW YORK – NETHERLAND PLAZA, CINCINNATI – RITZ-CARLTON, ATLANTIC CITY – VAN CLEVE,… | ||
| img111 | Memorandum discussing engine and chain drive designs, comparing different manufacturers and addressing issues like backlash. | ||
| View original record | about 5.7 litres. Of course if we do want an engine it would be cheaper and certainly much quicker to buy a car to which would be attached drawings of the new product. Cadillacs and others are… | ||
| img112 | Specifications for splines, gears, shafts, and synchromesh components. | ||
| View original record | aw (1) 15 pitch splines & twenty pitch serrations including on the sides only. To get a good fit - the shaft should be .001" tough to finish hole or broach - the supports also are of a cast iron cap.… | ||
| img113 | Technical report discussing component wear, carburettor fit, and oil-related corrosion issues in bearings. | ||
| View original record | Laminations tend with a coarse feed & leave tool marks clearly visible. The no for link cannot be seen on the worn side also. The use of cutting paste gives inward thrust result. Carburetters are a… | ||
| img114 | Hotel letterhead discussing engine component clearances, materials, and specifications. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK. NETHERLAND PLAZA, CINCINNATI. ADOLPHUS, DALLAS. VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz President 3 (1) The 'front' had bronze as RR made it… | ||
| img115 | Note on the difficulty of sourcing flanged trunnions and a material recommendation. | ||
| View original record | Previously, flanged trunnions are very difficult to get. Brico's have made a few. G.W. have sent out one only, one having a 2" union used for a flange. This could be a separate piece. This material… | ||
| img116 | Cablegram about Stromberg carburettor fuel levels and a suggestion to machine the manifold. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., LD. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM. 1. (Tel. No.… | ||
| img117 | Cablegram from Grylls to Robotham regarding measurements of nine-sixteenths and nine-thirty-seconds. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., LD. CANADIAN NATIONAL TELEGRAPHS. 1935 JUL 7 PM 3 30 RECEIVED AT 1, BROAD STREET CHAMBERS,… | ||
| img118 | Cover note for an attached memo dated 23.11.35, received from America. | ||
| View original record | To [redacted] Copy to Hs. [redacted] USA K/Lid.1/MN.7.12.35. Wyman - Please note & return Rm We attach herewith a copy of a memo. dated 23.11.35, which we have received from Da. [redacted] in America.… | ||
| img119 | From Detroit discussing tyre noise and the use of rubber isolation in rear springs, with diagrams. | ||
| View original record | COPY (Memo. from Da.) DETROIT. 23. November, 1935. To E. from La. Tyre Noise. We have had some confirmation of the view that the rubber isolation at the rear has something to do with eliminating tyre… | ||
| img120 | Rubber softening, steering components, and a comparison of gearbox spline design with General Motors. | ||
| View original record | -2- The rubber is further softened on the face next the spring by 34 - .250 diameter recesses - .125 deep pitched approximately .625 apart. As regards steering, my visit to Saginaw had to be postponed… | ||
| img121 | Involute tooth splines and a visit to G.M. Corporation to discuss cadmium and lead bronze engine bearings. | ||
| View original record | -3- minutes difference between the angles of the inner and outer cones, and says they leave the tool marks in their outer cones to get a more effective bedding. They have experienced sticking and use… | ||
| img122 | Tray system and front and rear suspension ratings. | ||
| View original record | -4- We believe Coverley knows about the tray system. The composition they are using is SS-45, but they say it is not important. Front Suspension. Olley has been working out our front suspension… | ||
| img123 | Cablegram from Detroit regarding specifications and shipping arrangements for Raybestos and Hyco lining fabrics. | ||
| View original record | Form No. 6. Please Circulate WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS,… | ||
| img124 | Distributing the contents of three cablegrams received from America. | ||
| View original record | To Sg. c. to Wor. c. to E. c. to By. HS/Rm.17/KW.9.12.35. The following are three Cablegrams received from HS/Gry. in America :- "STROMBERGS SAY CORRECT LEVEL NINE SIXTEENTHS BELOW MAIN JET WILL FLOOD… | ||
| img125 | Cablegram from America regarding stiff rubber fabric mounting for Elliott bodies to address tyre noise. | ||
| View original record | WYMAN Noted GWD Sg. Wors c. Hs. By. HV. RMC. E/Lid.1 HP.9.12.35. We have received the following cablegram from Da in America:- "ELLIOTT BODIES HERE MOUNTED WITH STIFF RUBBER FABRIC S. IMS EIGHT TO… | ||
| img126 | Visit to American suppliers Federal Mogul and Long regarding bearings and clutches. | ||
| View original record | To Sg. c. to Wor. c. to K. c. to By. c. to Hdy. c. to RHC. c. to Hs/CTS. Hs/Rm.3/KW.9.12.35. The following is a memo, received from Hs/Gry. in America, dated 27.11.35 :- "I went yesterday to Federal… | ||
| img127 | Report discussing centrifugal weights, clutch thrust bearings, slow running, crank dampers and exhaust pipe design. | ||
| View original record | -2- The centrifugal weights used nowadays are to prevent excessive slipping during full throttle getaways and give at max. revs. as much as the springs. They rely on a /u of .25 for their woven… | ||
| img128 | Engine manifold design and harmonic damper considerations for various engine types. | ||
| View original record | -3- Hs/Rm.3/KW.9.12.35. Also a really large capacity manifold at least 4" dia. reduces the surging of pressure in the pipe and causes less blow back into the cylinders on opening the inlet valve. Very… | ||
| img129 | Visit to Federal Mogul regarding their cadmium bearings, detailing composition, manufacturing processes, and performance claims. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - VAN CLEVE, DAYTON K.W. Please circulate to usual people Rm by WB by Ady Also to R.H.C, C.T.S. Book-Cadillac Hotel DETROIT Ralph… | ||
| img130 | Clutch designs, materials, and performance comparisons with other manufacturers. | ||
| View original record | In the afternoon I went to Longs to talk about clutches. He was at Sapiars so I did not see him. Jackson or Packard was he wants to see also. They recommend a 12" clutch for the Phocle, it works… | ||
| img131 | And diagrams discussing methods for increasing engine power via intake and exhaust system design. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (H) President Some of the lost power is then put… | ||
| img132 | Engine design, focusing on manifold capacity and crankshaft damping. | ||
| View original record | Also a noisy large capacity manifold at limit 4" did reduce the puffing of pressure in the intake & causes less flow back into the cylinders on closing the inlet valve. Very likely on leaving the 30"… | ||
| img133 | Merits of acquiring competitor engines and cars, specifically the Cadillac Vee Eight and the Ford Lincoln Zephyr, for evaluation. | ||
| View original record | HS (handwritten) USA (handwritten) To Wray from Sg. re Wraith II. I would in particular draw your attention to paragraphs 1 and 3, Page 3, of Hs/Mm./KW.4.12.35 giving copy of memo. received from… | ||
| img134 | Cover note attaching a copy of a memo received from America. | ||
| View original record | To Sg. and Wsr. Copy to Hs, BY, HBY. V S U file E/Lid.1/MM.9.12.35. { H[redacted] HARDY } We attach herewith copy of a memo. dated 27th. Nov.,1935, which we have received from Da. in America. E/Lid.… | ||
| img135 | Cablegram regarding acceptable gearbox and axle pinion slack on Buick and Hudson vehicles. | ||
| View original record | To Eg. c. to Nor. c. to L. c. to By. c. to GA. c. to ia/Suth. USA Hs/Rm.17/RW.11.12.35. The following is a cablegram we have received from Hs/Gry. dated 10.12.35. "Buick and Hudson say gearbox slack… | ||
| img136 | From Detroit discussing torsion bar and wishbone suspension designs, with reference to Olley's opinions and the Phantom III model. | ||
| View original record | COPY (Memo. from Da.) DETROIT. 27.11.35. To E. from Da. I received your cablegram re torsion bar suspension and have cabled that Olley sees no objection to the parallel torsion bar suspension with… | ||
| img137 | Steering gear design, comparing Marles and Saginaw systems, and the principles of oversteering. | ||
| View original record | (2) feature at once. I have therefore given a good deal of time to trying to find anything about the Marles steering gear as made here which would seem to indicate a possibility of making our steering… | ||
| img138 | Potential purchase of an experimental Cadillac Vee 8 engine with a special flywheel for the Wraith II project. | ||
| View original record | SECRET. Sg. from Wor. e. to E. c. to Hs. USA Wor3/R.10.12.35. Re Wraith II - Sg5/E.12.35. The Cadillac Vee 8 with the special flywheel is in the Experimental stage at the moment in U.S.A., and it is… | ||
| img139 | Cover memo attaching a copy of a memo on the subject of steering received from the USA. | ||
| View original record | To: [redacted] F.J. HARDY USA E/Ext.1/MN.10.12.35. Copy to Hs. WPT/WHT. ------------------- Steering. We attach herewith copy of a memo. on the above subject, dated 25.11.35, which we have received… | ||
| img140 | Modifications to steering boxes based on information from Cadillac and Saginaw. | ||
| View original record | COPY (Memo. from Da.) DETROIT. 25.11.35. To E. from DA. Steering. I have now discussed steering boxes with the engineer (Mr.Kull) from Saginaw, and as a result have to modify in one or two respects… | ||
| img141 | Analysis and critique of steering gear components, including worm bearings, roller design, and rocker shafts. | ||
| View original record | -2- They preload the worm bearings to 1 lb. at the rad. of the steering wheel, the remaining 1 to 2 lbs. being tightness in passing over the centre. They say they do not think the shim method of… | ||
| img142 | Letter discussing discrepancies in helix angles and observations on gear manufacturing in Saginaw. | ||
| View original record | -3- we should say:- ∝ = Tan.⁻¹ Lead x Cos.β circumference. This explains some of the discrepancies we have found between our helix angles and those supplied us by America. Actually, of course,… | ||
| img143 | Relaying observations from a visit to the Lincoln Plant and an analysis of the Lincoln Zephyr vehicle. | ||
| View original record | To Sg. c. to Wor. c. to E. c. to By. c. to Hs/FJH. Hs/Rm. 8/KW.11.12.35. The following is a memo. we have received from Hs/Gry. dated 30.11.35 :- "I went over the Lincoln Plant yesterday. They were… | ||
| img144 | Comparison of Lincoln, Spectre and Zephyr components, with a focus on the Gemmer steering system. | ||
| View original record | -2- The large Lincoln has a double choke downdraught carburetter feeding two four port systems. The float chamber vent is in the lid. In the gearbox the pitch line backlash of a pair of gears is .007"… | ||
| img145 | Book-Cadillac Hotel letterhead about a visit to the Lincoln plant and an assessment of a K model LeBaron. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK · NETHERLAND PLAZA, CINCINNATI · ADOLPHUS, DALLAS · VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (RH) President Sg Woz E By F.J.H. To H.S I went… | ||
| img146 | Engine specifications and test observations, including dimensions, drives, cowling tests, and gear backlash, with a comparison to the Zephyr. | ||
| View original record | load. The V angle is 73° & the con rods with G side 2 1/2" dia x 3/4" wide. 4 main bearin'gs 2 1/2" diameter. Compression ratio 7.1 : 1. In view of the timing case being fitted ; if the pilot bar work… | ||
| img147 | Engine components, their wear, lubrication, and manufacturing on hotel letterhead. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz President The Penner steering people had almost… | ||
| img148 | Telegram received by telephone from Detroit regarding gearbox slack and clutch splines on Buick and Hudson cars. | ||
| View original record | ROLLS-ROYCE LTD. W.U GW/H LL Smith TELEGRAM RECEIVED BY TELEPHONE. RECEIVED Time Received: 9-8 Date: 11-12-35 To: NLT Raycar Derby By: Ew from: Detroit on: 30 10th Robotham buick and hudson say… | ||
| img149 | Secret internal memo detailing a cable exchange with Cadillac regarding a Vee '8' flexible flywheel. | ||
| View original record | Rm usa Sgr. and Wor. [crossed out] c. Hs. Hy. [crossed out] SECRET. Vee '8' Cadillac. We have cabled Mr Grylls and Mr Day as follows:- "Cable if possible to purchase Vee eight fitted flexible… | ||
| img150 | Cablegram from Detroit regarding the unimportance of gearbox slack for chunking, provided other components are within tolerance. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel. No.… | ||
| img151 | Covering note attaching a copy of a memo received from the U.S.A. | ||
| View original record | To Sg. and Wgr. Copy to Hs. By. E/Ltd.1/MN.12.12.35. F.J. Hardy - Please note & return Rm. We attach herewith copy of a memo. dated 30.11.35, which we have received from Da in U.S.A. ✓ E/Ltd. Noted… | ||
| img152 | Visit to Gemmer Manufacturing Co. in Detroit to discuss steering gear designs. | ||
| View original record | COPY (Memo. from Da.) DETROIT. 30.11.35. To E. from Da. Steering Gear. We went to the Gemmer Manufacturing Co. yesterday and saw Mr. Phillips. These are the people who are in direct connection with… | ||
| img153 | Technical comparison of Gemmer and Saginaw steering gear components and manufacturing processes. | ||
| View original record | -2- in a sticking point on the way back. This is difficult to believe and there seemed no evidence of it on the Saginaw gears. Against this is to set the greater angle of helix at the central position… | ||
| img154 | Saginaw vs. Gemmer steering gears and a performance analysis of a Lincoln Zephyr 12. | ||
| View original record | -3- As between the two I should say it would be wiser to follow Saginaw rather than Gemmer at the moment. Saginaw impress one rather more, and their gears seem more irreversible. I wonder however… | ||
| img155 | Typed report page discussing steering, brakes, and gears of a new car during a test. | ||
| View original record | -4- There were slight steering joggles over the rough part of the track. The brakes were good. The gears could be crashed very easily. It has to be remembered that it was a new car being prepared for… | ||
| img156 | Requesting a joint report from two individuals, DA and Gry, following their visit to the USA. | ||
| View original record | USA Copy. To Wor. from Sg. re Visit to USA of DA and Gry. I think it would be a good idea to instruct these two on their return to sit down and give us a joint report, summarizing the result of their… | ||
| img157 | Western Union cablegram from New York regarding cadmium bearings, oil corrosion, and a cost estimate. | ||
| View original record | Form No. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co. Ld. CANADIAN NATIONAL TELEGRAPHS. RECEIVED AT 1, BROAD STREET CHAMBERS, BIRMINGHAM, 1. (Tel. No.… | ||
| img158 | Telegram received by telephone from Detroit regarding the price and availability of bearings. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. W.U NLT RECEIVED Time Received 9.10 Date 14-12-35 To Royces Derby By EW from Detroit 31 13th Robotham not known here whether oils obtainable England… | ||
| img159 | Night letter cablegram to Federal Mogul Company instructing them not to proceed with Bentley bearings. | ||
| View original record | 16.12.35. NIGHT LETTER CABLEGRAM. FEDERAL MOGUL COMPANY, DETROIT, MICHIGAN, U.S.A. DO NOT PROCEED WITH BENTLEY BEARINGS. ROLLS-ROYCE. | ||
| img160 | Comparing the engine smoothness and crankshaft designs of Cadillac and Packard V-12s and V-8s, discussing issues like deflection and bearings. | ||
| View original record | To MG. c. to R. c. to HY. c. to Ndy. c. to Rhu. c. to EV. The following is a memo. received from A/Cry. dated November 1935 :- "By arguing with the Cadillac and Packard people about V-8 and 12's, and… | ||
| img161 | Cadillac V-8 crankshaft distortion and downdraught arrangement improvements. | ||
| View original record | -2- Cadillac maintain there is some peculiar distortion in 8 throw crankshafts that causes lead bronze bearings to require large clearances. Their V-8 24 journal will run on ordinary Allison copper… | ||
| img162 | Engine 'chunking' issues, automatic chokes, and silent tappets, with comparisons to Packard, Buick, and Cadillac vehicles. | ||
| View original record | -3- and that automatic chokes are now electrically operated and take a continuous current from the battery. Under bonnet temperature but not exhaust heat is the other controlling feature. CHUNKING… | ||
| img163 | Push rod deflection, a new camshaft component, self-lubricating bearings, and future car frame design suggestions. | ||
| View original record | -6- Ha/Rm/S/KR.16.12.35. Push rod deflection can cause noisy operation. With weak dural push rods they got valve closing curves thus:- and the tappet could not look after this. The new Wilcox Rich… | ||
| img164 | Blueprint diagram illustrating a suggested design for a Bentley front end. | ||
| View original record | DASH ON SUGGESTED BENTLEY FRONT END | ||
| img165 | Comparison of Cadillac, Packard, and Lincoln engines, focusing on crankshafts, bearings, and performance. | ||
| View original record | Sgt. & Wg. c to E. B., By. Hdy, R.N.C E.V. To HS By arguing with the Cadillac & Packard people about V8 and 12's & seeing the various cars it seems that a 12 of any V angle gives a smoother drive in… | ||
| img166 | Comparing Cadillac and Packard engine components and discussing crankshaft balance. | ||
| View original record | particularly when run up light under which condition the torque is weakest & has none of the periods inherent in a Spectre. The overhauled V8 is and rather Our job not bad when the flanged nose… | ||
| img167 | Crankshaft balance and design, with a comparison to the Cadillac V8 downdraught arrangement, including sketches. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK · NETHERLAND PLAZA, CINCINNATI · ADOLPHUS, DALLAS · VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz President 2. on each throw is correct and… | ||
| img168 | Chattering in automatic chokes and engine checking procedures. | ||
| View original record | Automatic chokes are now electrically operated & take a continuous current from the battery under bonnet temperature but not exhaust heat as in the carburettor's hotbox. Checking Packards say… | ||
| img169 | Book-Cadillac Hotel letterhead comparing performance and issues with competitor vehicles. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (A) President 3 From the papers I note on our March… | ||
| img170 | Technical notes on silent tappets, discussing Cadillac's advice and the Wilcox-Rich lifter. | ||
| View original record | Silent Tappets Cadillac advised us to leave Groove with the valves being held open on a slow opening unless we have at least 1/16" from plunger clearance. Their production test is to try the rate of… | ||
| img171 | Letter discussing self-lubricating bearings and car body specifications for a Bentley and a Phaeton. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON-NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (RH) President 4 Some very interesting work is being… | ||
| img172 | Pencil sketch of a component, possibly a Panther engine front-case, with handwritten notes. | ||
| View original record | Java Oil retention Panther front-case | ||
| img173 | Requesting a general report from DA and Gry upon their return. | ||
| View original record | Hs. from Wor. USA Worl1/T17.12.35. I attach copy of a note from Sg. (Sg2/E11.12.35) I am sure you will agree it is a capital idea to get DA. and Gry to sit down and give us a general report. Kindly… | ||
| img174 | Letter from Link-Belt Company providing recommendations on chain drive installations. | ||
| View original record | LINK-BELT COMPANY ENGINEERING PLANTS: CHICAGO, PHILADELPHIA, SAN FRANCISCO, TORONTO, ATLANTA CHAIN FACTORIES AND MALLEABLE FOUNDRIES: INDIANAPOLIS 5938 LINSDALE AVENUE, DETROIT, MICHIGAN USA 2 1/2"… | ||
| img175 | Continuation of a letter from Link-Belt Company regarding a roller chain and automatic adjustment. | ||
| View original record | LINK-BELT COMPANY SHEET NO. 2 DATE 18/12/35 CONTINUATION OF LETTER TO Rolls Royce, Ltd. 3/8 pitch roller chain, and the automatic adjustment that we have indicated. Trusting that we have given you… | ||
| img176 | Technical observations from a visit to Buick in America. | ||
| View original record | To Sg. c. to Wor. c. to A. c. to By. c. to Hay. Re Visit to America. On the 9th Dec. we visited Buicks, they supplying an Oldsmobile for transport. This car was interesting in that it had very little… | ||
| img177 | Visits to Hudsons and Cleveland Graphite Bronze Company regarding axle, suspension, and bearing technologies. | ||
| View original record | -2- I spent half a day at Hudsons and then had to return to Cadillac to try and persuade Seaholm to sell us a V-8 with the flexible flywheel. Hudsons told us - (1) That for chunking the backlash… | ||
| img178 | Engine oil flow, bearing clearances, and a new type of cast-iron material from Detroit. | ||
| View original record | -3- After a considerable amount of testing, Hopkins says that the oil flow in an engine at 2,500 r.p.m., should be 30 gallons per minute per square inch bearing clearance. By clearance is meant the… | ||
| img179 | Letter from Cadillac's Chief Engineer enclosing experimental prints of a flexible flywheel. | ||
| View original record | V5A CADILLAC MOTOR CAR COMPANY DETROIT, MICHIGAN CADILLAC and LA SALLE MOTOR CARS OFFICE OF THE CHIEF ENGINEER December 27, 1935. Mr. S. Grylls, Rolls-Royce, Limited, Derby, England. Dear Mr. Grylls:… | ||
| img180 | Letter to the Chief Engineer of Cadillac Motor Car Company regarding the exchange of drawings for cylinder heads and flywheels. | ||
| View original record | USA Exptl. Dept. Hs/Gry.20/KW. 31st December, 1935. E.W. Seaholm, Esq., Chief Engineer, The Cadillac Motor Car Company, Detroit, Michigan, U.S.A. Dear Mr. Seaholm, Many thanks for the letter you sent… | ||
| img181 | List of suggested experimental drawings required as a result of a visit to the U.S.A. | ||
| View original record | USA To Hs/Rm. Hs/Gry.22/KW.1.1.36. Suggested experimental drawings required from RHC's Dept. as a result of visit to the U.S.A. (1) Flexible flywheel for Spectre and 20/25. (2) Packard type 4 balance… | ||
| img182 | Visit to Strombergs to inspect their carburetter testing apparatus. | ||
| View original record | USU To E. c. to Wor. c. to Rg. c. to RHC. Hs/Gry.1/K.B.1.36. Carburetter Testing Apparatus at Strombergs. Strombergs were not willing to supply us with drawings or photographs of their aircraft test… | ||
| img183 | Blueprint diagram of Stromberg equipment for testing aero engines. | ||
| View original record | STROMBERG EQUIPMENT FOR TESTING AERO ENGINES, BOARD FOR FLOW METERS AND THROTTLE CONTROLS, AIR TIGHT CHAMBER WITH GLASS DOOR, CARBURETTER INVERTED, TO SUCTION PIPE, VARIABLE LEAK, VENTURIS REQUIRED… | ||
| img184 | Conversation with Strombergs regarding carburetter flooding and recommendations to prevent percolation. | ||
| View original record | To Sg. c. to Wor. c. to R. c. to By. c. to Hdy. 23A Hs/Rm.5/KW.1.1.36. The following is a copy of a memo. received from Hs/Gry. dated 7.12.35. "I went to Strombergs on Thursday and told them about the… | ||
| img185 | Analysis of downdraught carburettor percolation issues and proposed solutions including choke jacketing. | ||
| View original record | (6) Not yet obtainable but the solution. Having noticed that an updraught never suffered from this trouble and the engine will always restart, they looked for peculiarity of downdraught carb.… | ||
| img186 | Notes on aero carburettor testing methods, a visit to Briggs to review car designs, and tappet designs from Wilcox Rich. | ||
| View original record | -3- They would not give me the drawings RHC. wanted of the aero carb. testing equipment, but I have a good idea of its functioning. The air supply to the carburetter is measured by the pressure in a… | ||
| img187 | Note discussing the Halford tappet, an aero engine tappet, and the chemical composition of Silchrome. | ||
| View original record | -4- Hs/Rm.5/KW.1.1.36. Jardine said the Halford tappet needs absolutely air free oil and turning the other way up. They have a very clever tappet for aero engines which works either way up of which I… | ||
| img188 | Blueprint showing layout and dimensions of a Cadillac V8 engine cylinder, valves, and spark plug. | ||
| View original record | ROLLS-ROYCE LTD PRINT ROOM DERBY JAN 1 1936 CADILLAC V8 - 6 1/4 C/R - 3 1/2 X 4 1/2 - 135 H.P. - 7 VOL. AT 135 H.P. - 62% NOT TO SCALE 3 1/2 BORE PLUG. 7/32 TOWARDS EXHAUST 2 15/16 1 7/32 25/32 IN… | ||
| img189 | Letter on Book-Cadillac Hotel stationery discussing a carburettor flooding issue on steep gradients. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON Also keep copies for C.T.S and G.R. Book-Cadillac Hotel DETROIT Ralph Hitz President Sg… | ||
| img190 | Six technical observations and issues with engine components, including carburetors and manifolds. | ||
| View original record | (1) At least 5/8 asbestos packing between the Carb: and manifold (2) Venting of the float chamber lid by an affair like our axle breathers with a flange to prevent bubbles of petrol escaping. They… | ||
| img191 | With a diagram discussing carburettor percolation and automatic chokes. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK • NETHERLAND PLAZA, CINCINNATI • ADOLPHUS, DALLAS • VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (RH) President 2. Measurement of the carburettor &… | ||
| img192 | Memo discussing water thermostats, carburettor air supply, and testing methodologies. | ||
| View original record | water thermostats. no American car has this & worth returns doing so for the other reason for such slow warming of the manifold They would not see on the drawings RHE water of the aero carb testing… | ||
| img193 | Memo, on hotel letterhead, detailing a new futuristic, frameless car design from Briggs and Tjaarda. | ||
| View original record | HOTELS NEW YORKER & LEXINGTON, NEW YORK · NETHERLAND PLAZA, CINCINNATI · ADOLPHUS, DALLAS · VAN CLEVE, DAYTON Book-Cadillac Hotel DETROIT Ralph Hitz (RH) President 3 Yesterday, Ja Park & I visited… | ||
| img194 | Issues with springs and tappets, including a material specification for Silchrom. | ||
| View original record | An additional tufted spring like we are to most not a fit. The plunger has .0003 to .0005" clearance and a sharp bottom edge to prevent shaking when dirty. Jardin sand on Halford tappet needs… | ||
| img195 | Hand-drawn sketch on hotel letterhead comparing two designs for cylinder and port/valve layouts with dimensions and engine specifications. | ||
| View original record | Letterhead: HOTELS NEW YORKER & LEXINGTON, NEW YORK - NETHERLAND PLAZA, CINCINNATI - ADOLPHUS, DALLAS - VAN CLEVE, DAYTON. Book-Cadillac Hotel. DETROIT. Ralph Hitz President. Diagram 1 Annotations: 1,… | ||
| img196 | 1935 visit to the USA to research automobile engineering, chassis issues, and industry trends. | ||
| View original record | File To Sg.from Hs/Gry. c. to Wor. c. to E. c. to Ry. c. to Da. c. to Hdy. c. to Ev. Hs/Gry.10/Kv.2.1.36. VISIT TO U.S.A. - 1935. Ds. and the writer paid a short visit to the States, primarily to… | ||
| img197 | Desired vehicle handling characteristics, comparing to American cars, and future design considerations. | ||
| View original record | -2- He/Gry.10/K.s.1.35. from a 12-cylinder engine, which at low speeds full throttle will always be an improvement over the V-8. Before dealing with the replies to the questions to which we have found… | ||
| img198 | Comparing chassis stiffness, engine mounting, and noise insulation techniques with American car manufacturers. | ||
| View original record | -3- He/Gry.10/KS.2.1.34. With the Zephyr type body and chassis construction in both cases very little weight reduction would result, although Briggs argue that when the engine inertia is no longer at… | ||
| img199 | Technical report on major problems with the Ph.III chassis, specifically tyre noise and gearbox chunking. | ||
| View original record | -4- As regards the major problems on the Ph.III chassis - (1) Tyre Noise. Most of the manufacturers agreed that the more rubber between the axle and frame, the less the tyre noise, the best results… | ||
| img200 | Technical report discussing gearbox grinding, road shock reduction methods, and types of engine mountings. | ||
| View original record | -5- Ha/Gry.10/RM.2.1.35. While on the subject of gearboxes, no-one in the States now grinds the gear teeth, which are finished with a female cast-iron lap. (3) Road Shocks. We were not able to find… | ||
| img201 | Engine design considerations including noise, induction, percolation, and hot-spots. | ||
| View original record | -6- He/Gry.10/KS.2.1.35. Noise Insulation. (2) This has been gone into earlier in this memo., and we think much more lavish use of noise insulating material should be made in the dashboard and… | ||
| img202 | The volumetric efficiency of American engines, carburettor drains, and rubber slipper wheels. | ||
| View original record | -7- (6) Volumetric Efficiencies. The chief reason for using side valve engines is that they are cheaper. The average figures for the volumetric efficiency at the speed corresponding to maximum horse… | ||
| img203 | Report discussing road shocks, supercharging methods, and various bearing materials. | ||
| View original record | -6- (9) Road Shocks. Cy. maintains that it is important to arrange correct steering geometry and as near as possible a wheel movement in which the camber does not change. Although a new tight steering… | ||
| img204 | Report page discussing crankshafts, clutches, frame information, and costs in comparison to other manufacturers. | ||
| View original record | -9- Hs/Gry.10/K.L.1.35. crankshaft to run true at high speeds, whereas balance weights fitted in a normal manner do not necessarily correct the deflections in the crankshaft. We also recommend trying… | ||
| img205 | Answering questions about competitor engine designs and piston development. | ||
| View original record | -10- In answer to other questions :- (1) Buick have dropped their oil coolers, firstly because of expense, and secondly because a considerable reduction in oil temperature was obtained when th… | ||
| img206 | Need for specific test equipment for motor cars and collaborating with American engineers to improve handling. | ||
| View original record | -11- He/Gry.AD.K.2.1.36. we do think that our test equipment should include a General Motors type "skid pan" and also the necessary weighing machines for measuring spring rate and roll rate on… | ||
| img207 | Cover note forwarding a report regarding axle and gearbox slacks for review. | ||
| View original record | To [redacted] Copy to [redacted] FILE U S A E/Lid.1/MN.3.1.35. Rm We send herewith copy of report received from Da, dated 5.12.35. E/Lid. R.H.C. Please note remarks re axle & gearbox slacks & return… | ||
| img208 | From Detroit detailing observations on axle and gearbox slack causing 'chunking' noise at Buick. | ||
| View original record | COPY (Memo. from Da.) DETROIT. 5 Dec,1935. To E. from Da. As we are hoping to catch the Aquitania on Saturday the chances of a letter reaching England before we do are not great now. We have however… | ||
| img209 | Analysis of body shims, oil cooler performance, and oil degradation in competitor vehicles. | ||
| View original record | -2- What appears to me to be the most important is the fact that they are sure the solution lies in the amount and position of the slack and not in some mysterious feature. We have not yet found a… | ||
| img210 | Cover note for a summary report concerning a visit to America. | ||
| View original record | Sg. and Wor. c. Hs. By. Hdy. to America. Herewith summary report of visit Da. Da.1/HP.3.1.36. | ||
| img211 | Findings and experiences from a visit to America in 1935, including interactions with General Motors. | ||
| View original record | COPY. To E. from Da. On Board Cunard White Star "AQUITANIA". Dal/HP.28.12.35. Visit to America - 1935. We were extremely well received wherever we went, and everybody without exception appeared… | ||
| img212 | Summary of conclusions regarding vehicle noise issues, specifically tyre noise and transmission chunking, with comparisons to American cars. | ||
| View original record | (sheet 2) Following is a resumé of the conclusion we came to on most of the problems discussed, following the order of Mr Elliott's E.3/MP.5.11.35. (1) Tyre Noise. The Tyre Co's consider that as far… | ||
| img213 | Technical analysis of vehicle gearbox slack, suspension rates, and steering characteristics. | ||
| View original record | (sheet 3) splines, and the rear axle gear slack. They did not appear to worry much about the gearbox. Of the others, Packard went to great pains with the gearbox but not so much with the remainder of… | ||
| img214 | Technical analysis of American car suspension, steering, and gearbox characteristics. | ||
| View original record | (sheet 4) (though this latter explanation is denied by Olley). The Cadillacs, Buicks, and Chevrolets all roll from a point on the ground, the lateral translation produced by this low rolling point… | ||
| img215 | Comparative analysis of competitor gearboxes, suspension systems, and engine arrangements. | ||
| View original record | (sheet 5) did not appear to be as quiet as Rolls-Royce. Most that I heard were very much more noisy. Packards were the only example of a quiet box. We found no separately mounted gearboxes. We have… | ||
| img216 | Buick's oil cooler design, various types of engine dampers, and frame rigidity. | ||
| View original record | (sheet 6) (7) We have reported two different reasons for Buick abandoning oil coolers. The reason given by Harrisons, viz. that they are no longer necessary on the re-designing of the Straight '8' is… | ||
| img217 | Frame stiffness, body construction, crankcase ventilation, cooling systems, and engine bearings. | ||
| View original record | (sheet 7) rely on the widely spread cruciform member, and on the plated floor of the body, but this investigation had got no distance. In the Lincoln Zephyr the floor plate is integral with the frame… | ||
| img218 | Competitor analysis, focusing on Packard crankshafts, rear-engined car designs, and rear axle configurations. | ||
| View original record | (sheet 8) at least one flanged bearing, but there seems a possibility that the strips can be flanged out, as is being done in one case. We have brought back a drawing of the Packard crankshaft (V.12)… | ||
| img219 | Fully floating axles, engine slow running, body design modeling, and spring interleaves. | ||
| View original record | (sheet 9) without experiencing any trouble. Increased offset, if it can be safely used, has very useful features. Our fully floating axle gives more slacks than the semi-floating or three-quarter… | ||
| img220 | Concluding page of a document noting unsatisfactory results and the promise of a forthcoming report. | ||
| View original record | (sheet 10) not entirely satisfactory results. They are writing me an account of their experiences immediately. Da. | ||
| img221 | List of drawings and samples of American automotive parts obtained while in the U.S.A. | ||
| View original record | List of Drawings, samples etc. obtained while in the U.S.A. Drawings etc. Saginaw steering worms (3). Gemmer complete steering gears (3) Packard V.12 crankshaft. Packard rubber crankshaft damper.… | ||
| img222 | Typed list of various automotive components and materials. | ||
| View original record | (sheet 2) 17 Oilite caged clutch thrust bearing. Two self-sealing ball journal bearings. Two improved radiator matrices. Oil cooler tubes. Special thermostat. Buick water heated rocker shaft. Briggs… | ||
| img223 | Issues with whitemetal bearings and proposals for new materials and testing methods. | ||
| View original record | USA To A. c. to H.or. c. to Da. c. to Hy. c. to Hdy. c. to RHC. Hs/Gry.E/K. 4.1.36. WHITE METAL BEARINGS. Since we are in trouble with Ph.III big end bearings and not altogether satisfied with the… | ||
| img224 | Cover letter sending a copy of a report from a visit to the U.S.A. | ||
| View original record | To [redacted] Copy to Hs. [redacted] Da.1/MN.6.1.36. Report.5.12.35. We send herewith copy of report written during visit to U.S.A. Handwritten Annotations: [Circulation list on left]: 7/H T.H.SS… | ||
| img225 | Technical memo discussing tyre noise and the methods used by various car manufacturers to reduce it. | ||
| View original record | COPY (Memo. from U.S.) DETROIT. To E. from U.S. 5.12.35 Tyre Noise. It seems certain that the body mounting has a considerable amount to do with tyre noise at anyrate inside the car. Cadillacs, who… | ||
| img226 | Analysis of drive 'chunking' issues in various cars and a comparison of V12 and V8 engines. | ||
| View original record | -2- Chunking in the Drive. So far the only car we have found which does not chunk in the drive is the Buick we tried on the Proving Grounds. All others do, including the Cadillacs, Packards, Lincolns,… | ||
| img227 | Crankshaft dampers and balancing methods, comparing different approaches with competitors. | ||
| View original record | -3- the one we tried, especially as it had a higher compression than standard. I should personally have thought we ought to have a Zephyr for the modernised chassis construction, but it seems doubtful… | ||
| img228 | Analysis of crankshaft deflection, balance weights, and the use of copper-lead bearings with comparisons to competitors. | ||
| View original record | -4- Supports at AA. Load applied at aa gives deflection a, applied at bb gives deflection b, at cc gives deflection c. Balance weights at AA in the example shown us were 20° in front of the crankpin… | ||
| img229 | Gearbox design, damper characteristics, and an analysis of Packard's gearbox. | ||
| View original record | -5- damper is critical, too much being as bad as too little. Spring flexibility is varied by the quality of the rubber. In the steel spring type the inertia is not critical, but the rating of the… | ||
| img230 | Continuation of notes on the Packard gearbox, with comparisons to Lincoln, and a section on Packard valve springs. | ||
| View original record | Packard Gearbox Continued. On the teeth they remove approximately .003 from the tooth face on the drive side, so as to make this action all recessive. On the over-run the tooth has a full face. They… | ||
| img231 | Body mounting stiffness and noise insulation techniques, referencing Packard and Lincoln Zephyr. | ||
| View original record | -2- Body Mounting. The Big Packard has 16 points of pulling the body on to the frame. The 120 - 28 points. They say the body definitely affects the overall stiffness. They get 2500 foot lbs. per… | ||
| img232 | Cover letter enclosing thank you notes for signature following a visit to the States. | ||
| View original record | usa To Sg. Hs/Gry.14/KW.9.1.36. We enclose letters addressed to three of the people who were most helpful to Da. and myself during our recent visit to the States, and shall be glad if you will sign… | ||
| img233 | Letter to E.V. Rippingille of General Motors thanking him for assistance and extending a reciprocal invitation. | ||
| View original record | Sg.10/KW. 9th January, 1936. E.V. Rippingille, Esq., Research Laboratories, General Motors, Detroit, Michigan, U.S.A. Dear Mr. Rippingville, On their return from their recent visit to the States,… | ||
| img234 | Thank-you letter to W. Chayne of The Buick Motor Company for assistance provided during a visit. | ||
| View original record | Sg.9/KW. 9th January, 1936. W. Chayne Esq., The Buick Motor Company, Flint, Michigan, U.S.A. Dear Mr. Chayne, On their return from the States Messrs. Day and Grylls spoke enthusiastically about the… | ||
| img235 | Letter to the Chief Engineer of Cadillac thanking him for his hospitality towards visiting engineers. | ||
| View original record | Sg.8/KW.9.1.36. 9th January, 1936. E.F. Seaholm, Esq., Chief Engineer, The Cadillac Motor Car Company, Detroit, Michigan, U.S.A. Dear Mr. Seaholm, Messrs. Day and Grylls on their return from the… | ||
| img236 | Confirming the signing and dispatch of three letters. | ||
| View original record | USA S/W To Hs/Gry. from Sg. Sg14/E10.1.36 I have signed and despatched the three letters sent with your Hs/Gry.14/KW.9.1.36. Sg. | ||
| img237 | Letter to The Brown Alloy Works in Detroit regarding the potential use of their X-Alloy for high expansion cylinder liners and shock damper bushes. | ||
| View original record | USA Exptl. Dept. Hs/Gry.5/KW. 25th January, 1936. Walter Brown, Esq., The Brown Alloy Works, 14,400 Woodrow Wilson avenue, Detroit, Michigan, U.S.A. Dear Mr. Brown, Since returning to England I have… | ||
| img238 | Letter from Cadillac Motor Car Company discussing research into wheel fight, wobble, and shimmy. | ||
| View original record | COPY Hs/Rm * N.S a F.J.H See me CADILLAC MOTOR CAR COMPANY. DETROIT, MICHIGAN. Rm March 9th 1936. B.I.Day Esq., Rolls-Royce Limited., Derby, England. Dear Mr Day, Thanks for yours of February 26,… | ||
| img239 | Analysis of steering and suspension systems, focusing on issues like wheel fight, wobble, and vibration frequencies. | ||
| View original record | (sheet 2) Dubonnet jobs for example all show the first type but practically none of the second. The moment of inertia about the kingpin is doubled on these jobs. All Dubonnet jobs are free from high… | ||
| img240 | Query from Maurice Olley regarding wheel fight and wheel hop frequency, referencing an attached sketch. | ||
| View original record | (sheet 3) a minute fight and lifted up the wheel flap frequency into the zone above 600 a minute where the wheel hop is all finished and there is no wheel fight?. Attached sketch illustrates my query.… | ||
| img241 | Graph analyzing steering wheel movement amplitude versus frequency, with annotations on different suspension types and their effects. | ||
| View original record | Amplitude of Steering Wheel Movement FREQUENCY OLLEY MAR 9/36 DUBONNETS give much of A, little c B Good on road with a little friction in kingpins. WISHBONES with stiff steerings have little of A,… | ||
| img242 | Letter from Wilcox-Rich Corporation regarding the casting of XALOY for shock damper bushes and cylinder liners. | ||
| View original record | WILCOX-RICH CORPORATION DIVISION OF EATON MANUFACTURING COMPANY PRODUCTS RICH VALVES RICH TAPPETS VALVE SEAT RINGS VALVE-A-MATIC HYDRAULIC LIFTERS 9771 FRENCH ROAD DETROIT, MICHIGAN October 9, 1936… | ||
| img243 | Letter to The Wilcox Rich Corporation regarding the supply of parts made from XALOY material. | ||
| View original record | Guy VSA Exptl. Dept. Hs/Gry.9/JH. 21st October, 1936. The Wilcox Rich Corporation, Detroit, Michigan, U.S.A. Dear Sirs, We thank you for your letter of 9th October, in which we were informed that you… | ||
| img244 | Letter from Wilcox-Rich Corporation regarding a request for high expansion austenitic cylinder liners. | ||
| View original record | WILCOX-RICH CORPORATION DIVISION OF EATON MANUFACTURING COMPANY 9771 FRENCH ROAD DETROIT, MICHIGAN PRODUCTS: RICH VALVES VALVE TAPPETS VALVE SEAT RINGS VALVES MATES HYDRAULIC LIFTERS PLANTS: SAGINAW… | ||
| img245 | Letter to the Wilcox Rich Corporation declining to use X-Alloy for cylinder liners due to material strength concerns. | ||
| View original record | Expl. Dept. Am/Cry.11/MJ. 26th. October, 1936. The Wilcox Rich Corporation, Detroit, Michigan, U.S.A. For the attention of Mr. A.D. Gardner. Dear Sir, We thank you for your letter of the 13th. inst.… | ||