Rolls-Royce Archives
| Identifier | Entry | ||
| img001 | Cover note regarding an attached memo from Olley on Spark Plugs. | ||
| View original record | E. from Rm. c. Lr. c. Lr/Wat. c. Lr/Lov.c. c. Rm/Chfld. c. EV c. Jnr. c. RM/CTS. SL.4/JHS.4.6.40. SPARK PLUGS. Spark Plugs. Attached is a note we have received from Olley on Rm. | ||
| img002 | Spark plug development for aircraft engines, including types, sizes, and manufacturer feedback. | ||
| View original record | COPY Serial No. 134. Oy.5/D/May.17.40. May 17, 1940. Spark Plugs. Rolls Royce Ltd., Derby. Rm Heron and Val Cronstedt of Pratt & Whitney agree that the best which they can see at present in ceramic… | ||
| img003 | Cover note for Olley Serial No. 95, regarding a note on hydraulic controls and pumps. | ||
| View original record | 67 B. from Rm. c. Wd. c. Ev. c. Er. c. Jnr. c. Rg. c. Rm/Aero c. Dorey. c. Rm/CTS Rm.1/JMS.24.5.40. Olley Serial No.95. Herewith a copy of a note we have had from Olley on Hydraulic controls and Pumps… | ||
| img004 | The development and application of the Davis Steering Gear and Oil Pump. | ||
| View original record | COPY Serial No.95. Rolls-Royce, Ltd., Derby. OY.1/D/Apr.24.40. April 24, 1940. Davis Steering Gear and Oil Pump. Rm. Had a call April 19, from F.W. Davis of the hydraulic steering gear. To find any… | ||
| img005 | Developments in aircraft fuel feed systems, hydraulic controls, accumulators, and steering. | ||
| View original record | -2- as experimental development to get rid of noise and pressure failures. On the West Coast it is being applied to aircraft for fuel feed, using a series of three pumps, one on the engine, pumping… | ||
| img006 | Report discussing the trial of oil-motors for pre-rotating aircraft wheels and notes on hydraulic control and steering systems. | ||
| View original record | -S.2- ...to get rid of noise and pressure fluctuations. ...as experimental development of jet propulsion. On the West Coast it is being applied to aircrafts by using a series of three pumps, one on… | ||
| img007 | Blueprint diagram of a Glycerine-Ast Pressure Oil Accumulator. | ||
| View original record | COMP NITROGEN OIL GLYCERINEO PUMP GLYCERINE - Ast PRESSURE OIL ACCUMULATOR AS DESCRIBED BY F.W. DAVIS. APLO Oy AP23/40 | ||
| img008 | Comparison sketch of original and present 'Buckingham Rack' profiles with a related gear mechanism. | ||
| View original record | ORIG BUCKINGHAM RACK CIRC 45° ELL PRESENT BUCKINGHAM MAM | ||
| img009 | Design sketch for a Davis Buckingham Oil Pump, focusing on eliminating cavitation. | ||
| View original record | AR PTICAL ACK OIL ESCAPES WITHOUT TRAPPING CONNECTION TO REPLENISHING TANK RETURN FROM SYSTEM INJECTOR CONSTRUCTION ELIMINATES CAVITATION RELIEF VALVE Davis Buckingham OIL PUMP OY APr. 23/40 | ||
| img010 | Forwarding information from Olley regarding reduction gears. | ||
| View original record | E.from Rm. c.c. Ir. c.c. LOV. c.c. EV c.c. Dr. Bastow. c.c. LF/Mr. Hooker. c.c. Ext. Rm.11/ML.9.4.40. Here is some information from Olley on reduction gears, which I think may be useful. Rm. | ||
| img011 | Blueprint chart of gear reduction ratios for plain and compound planet gears. | ||
| View original record | RATIO. LARGER PINION DIA: / ANNULUS DIA: COMPOUND PLANET PLAIN GEAR PINION RATIO FOR COMPOUND PINION = LARGER PINION DIA: / SMALLER PINION DIA REDUCTION RATIO DESIRABLE REDUCTION RANGE PINION RATIO 1… | ||
| img012 | Findings from the 'Dynamic Fatigue Life of Rubber' paper from U.S. Rubber. | ||
| View original record | Serial No. 103 67 OY 6/D/Apr.25.40 April 25, 1940 Rolls-Royce, Ltd. Derby, England U.S. Rubber April 18, 1940 Rm. Mr. Sloman, Drs. Yost, Merrill, Walter Keyes. 1) Attached are two copies of "Dynamic… | ||
| img013 | Using rubber for mountings on cars to reduce road noise and vibration. | ||
| View original record | Rm. - 2 Serial No. 103 OY 6/D/Apr.25.40 mountings on cars for reduction of road noise, automobile engine mounts, etc. 2) I imagine that the R.R. aero engines do not absolutely require rubber mounts… | ||
| img014 | Scientific paper on the dynamic fatigue life of rubber, detailing testing methods and characteristics. | ||
| View original record | Reprinted from Analytical Edition, INDUSTRIAL AND ENGINEERING CHEMISTRY, Vol. 12, Page 19, January 15, 1940 Dynamic Fatigue Life of Rubber S. M. CADWELL, R. A. MERRILL, C. M. SLOMAN, AND F. L. YOST… | ||
| img015 | Page from a journal discussing dynamic fatigue tests on rubber samples, including equations and diagrams. | ||
| View original record | 20 INDUSTRIAL AND ENGINEERING CHEMISTRY VOL. 12, NO. 1 ΔL. The actual fatigue machines used in the authors’ experimental testing are designed so that ΔL and Lmin. can be varied independently. In the… | ||
| img016 | Analytical report on the dynamic fatigue life curves for a 50 durometer rubber stock. | ||
| View original record | JANUARY 15, 1940 ANALYTICAL EDITION 21 Linear Dynamic Fatigue Life Curves for a 50 Durometer Stock Figure 8 is a plot of experimental results obtained on a rubber stock which has a reading of 50 on a… | ||
| img017 | Journal page discussing the dynamic fatigue life of rubber, including testing machinery and graphical data. | ||
| View original record | 22 INDUSTRIAL AND ENGINEERING CHEMISTRY VOL. 12, NO. 1 FIGURE 6 (Left) DeMATTIA FATIGUE MACHINE WITH RUBBER SAMPLES (Right) HIGH-SPEED DYNAMIC FATIGUE MACHINE, 0.25-INCH STROKE S R C plotted to cover… | ||
| img018 | Analytical study on the dynamic fatigue life of rubber under various temperature, shear, and strain conditions. | ||
| View original record | JANUARY 15, 1940 ANALYTICAL EDITION 23 FIGURE 9. EFFECT OF TEMPERATURE ON DYNAMIC FATIGUE LIFE GRAPH Y-AXIS: RATIO OF FATIGUE LIFE AT A GIVEN TEMPERATURE TO THAT AT 100°F (LOG SCALE) GRAPH X-AXIS:… | ||
| img019 | Steering gear manufacturing, specifically the relationship between Gemmer and Adamant regarding the Marles gear. | ||
| View original record | To Ev. o. Ev/Bastow o. Rm/Hardy COPY. Serial No.96. OY.2/D/Apr.24.40. Steering Gear. Rm. While I am waiting to hear from Saginaw on the recirculator ball steering, it seemed only fair to have a heart… | ||
| img020 | Steering gear technologies, competitor practices, and component specifications. | ||
| View original record | Rm - 2. Serial No.96. OY.2/D/Apr.24.40. 2) General Motors pay royalty to Gemmer on all worm and roller gears, which are made at Saginaw with roller assemblies from New Departure (of the angular… | ||
| img021 | Steering gear components, manufacturing processes, and comparisons between different designs. | ||
| View original record | Rm - 3. Serial No.96. OY.2/D/Apr.24.40. When the balls climb the thing acts like a ball chuck and the balls tend to run in a fixed position and eventually crack. (We also found this on the… | ||
| img022 | Report from a visit to General Motors discussing Studebaker tappets, Vauxhall experimental car sound tests, and American methods for reducing road noise. | ||
| View original record | COPY OF SERIAL NO.78 FROM OLLEY, DATED APRIL 13th, 1940. Rolls-Royce Ltd., Derby. Rm. Car Work. Tappets. Visit from Ernie Wilson, General Motors Proving Ground - April 11, '40. With regard to your… | ||
| img023 | Technical memorandum discussing suspension types, engine bore wear, lubrication, and piston/liner issues in various competitor vehicles. | ||
| View original record | -2- Serial No.78 from Olley. at least ½" deflection vertically under load and preferably more. At the front end, this necessarily implies the type of unit suspension used on the Opel Kapitan and… | ||
| img024 | Tractor manufacturers, fuel consumption, and ignition system improvements. | ||
| View original record | -3- Serial No.78 from Olley. Tractors. International Harvester is the leader in farm tractors. Allis Chalmers is the runner-up in technical development. Is now entering the tractor field, both for… | ||
| img025 | Car radio and aerial options from Delco, including pricing and a comparison to British and German radios. | ||
| View original record | Serial No.76. COPY. OY.1/D/Apr.13.40. Rolls-Royce, Ltd., Derby, England. Rm. Car Radio. I have made several attempts to reply to Rm/RC. 1/BA, January 4th, 1940. By the assistance of J.H.Hunt, I have… | ||
| img026 | Car radio technology, including comparisons, aerials, housing, and power systems. | ||
| View original record | Rm - 2. Serial No. 76. OY.1/D/Apr.13.40. 2) I was wrong in the information that I picked up from Mackworth Rees. The English sets are all super-heterodyne and have been so for some years. A modern… | ||
| img027 | Delco radio sets, including continental types and future plans for military versions. | ||
| View original record | Rm - 3. Serial No.76. OY.1/D/Apr.13.40. like electric bell vibrators with double contact, and produce a full alternating current wave of rather square topped form. This is transformed from 6 volts to… | ||
| img028 | Letter to General Motors outlining five advantages of American car radios over British models. | ||
| View original record | Rm.1/JMS./C.75 Rm.1/JMS. M. Olley, Esq., 2/251, General Motors Building, DETROIT. Dear Olley, Your Serial No. 76. E.H Thank you for this letter, which we passed to our representative, who reports as… | ||
| img029 | Letter page suggesting an aerial installation trial and commenting on various components like steering gear, oil pumps, and hydraulic controls. | ||
| View original record | -2- Rm.1/JMS. 23.5.40. 6. We suggest that this method of installing together with a roof or whipsocket aerial be given a trial, and from it we will be able to see more clearly to many advantages.… | ||
| img030 | Note discussing a letter from Clay regarding Stromberg injection carburettors and safety fuels for post-war engines. | ||
| View original record | Herewith a copy of a letter from Clay. Would you like a Stromberg injection carburettor? If anybody is thinking of after the war car and aviation engines Olley's remarks on safety fuels should be of… | ||
| img031 | Describing the Ljungstrom direct gasoline injection system for aviation engines. | ||
| View original record | Memorandum Concerning Gasoline injection for aviation Engines Considerable interest has been aroused about direct injection of gasoline into the cylinders of aviation engines, thereby eliminating the… | ||
| img032 | Description of the air control valve, injection nozzles, pipe connections, and injector equipment related to Drawing No. 2-01-26. | ||
| View original record | ment is the air control valve, the injection nozzles and the pipe connections between the different units. Drawing No. 2-01-26 shows the approximate relative size of the injector equipment mounted on… | ||
| img033 | Analysis of a De Dion rear axle and future experimental design work. | ||
| View original record | Ev. from Rm. Rm.10/ML.5.4.40. I am sending you a copy of OY.7/D.7.3.40. as I think this contains some extremely useful information. We ought to make an analysis of the advantages to be gained from the… | ||
| img034 | Observations on car work at G.M. and referencing production efficiency ideas from an aircraft article. | ||
| View original record | Serial No. 7 Rolls-Royce,Ltd. Derby,England OY 7/D/Mar.7.40 March 7,1940 Rm. Car Work 1) It may interest you that on a visit to T.P.Chase at G.M. Research Monday morning, we found him working on--… | ||
| img035 | Methods for producing automobile bodies in small quantities, referencing aircraft industry practices and sheet metal supplies. | ||
| View original record | Serial No. 7 Rm. page 2 OY 7/D/Mar.7.40. "....structural engineers maintained close contact with the loft department.... "....Blueprints are eliminated" page 6 "....calls for full co-operation between… | ||
| img036 | Report comparing British and American sheet metal mill tolerances, practices, and resulting impacts on cost and weight. | ||
| View original record | Serial No 7 Rm. page 3 The tolerances demanded by British mills is so wide that the gauges overlap and the mill can roll any thickness and throw the resulting sheet into some one or two bins. But it… | ||
| img037 | 'loft layout' drawing principle and Cadillac's use of large monster drawing boards. | ||
| View original record | Serial No. 7 Rn. page 4 OY 7/D/Mar.7.40 V.M. Ltd. have a lot of notes and experience on this, and I think should figure with Manning in any drive you have in mind to improve coachwork. 7) Am going to… | ||
| img038 | Technical memorandum discussing the causes and potential solutions for engine bore wear. | ||
| View original record | Serial No 65 OY/1/hc/April 4-40 April 4 1940 Rolls-Royce Ltd. Derby, England Rm Yours Rm.6.ML 12-3-40 Car Work Bore Wear. I have not seen Alex on bore wear, but would not jump to the conclusion that… | ||
| img039 | American automotive practices concerning propeller shafts, timing gears, spark plugs, and steering. | ||
| View original record | Incidentally, Chevrolet disapprove of the little bridges across the water jackets on EB-3778, but they may know nothing about it. Am inclined to think that the missing link on cylinder bore… | ||
| img040 | Materials for leaf spring interleaving, their properties, and methods for testing. | ||
| View original record | Serial no 66 E.v. Rolls-Royce, Ltd. Derby, England Leaf Springs Interleaving Re Rm./C1m.4/ML 15.3.40 I consider the Jackson material, as originally offered to us, worthless. Will not resist moisture.… | ||
| img041 | Test methods, wear, and noise issues related to leaf springs. | ||
| View original record | A cranking rig is excellent for life testing of springs, both wet and dry, clean and dirty. Geoff. has used them all ways. Also good for getting static and dynamic friction loops, as described above.… | ||
| img042 | General memo discussing various projects including tractor inquiries, Zeiss equipment, Ford England, and Rotol manufacturing. | ||
| View original record | Serial No. 60 E.W. + design OX 1/D/Mar.30.40 RM March 30, 1940 Rolls-Royce, Ltd. Derby, England I.A. General Some communications have rolled in from you en masse, which leave me holding so many babies… | ||
| img043 | Progress report on various automotive components including springs, crankshafts, valve springs, and gearshifts. | ||
| View original record | Rm. - page 2 Serial No. 60 OF 1/D/Mar.30.40 Brudner thread miller seems the best bet. Eaton Have finished four sample rear springs, shot-blasted, grooved-steel, liners, and are putting them on their… | ||
| img044 | Report page discussing road noise, wishbone joints, spark plugs, and bore wear. | ||
| View original record | Ens. - page 3 Serial No. 60 OF 1/D/Mar.30.40 You will have got further notes from me on Proving Ground comments about road noise. There is a lot they don't know that Geoffrey Bastow does know, about… | ||
| img045 | Technical discussion on Tocco hardening, spark plugs, safety fuel, and engine varnish. | ||
| View original record | Rm. - page 4 Serial No. 60 CY 1/D/Mar.30.40 appear? Would like to see your article. Shall have no difficulty in "selling" it to any one of a number of publications. Will write John Warner about… | ||
| img046 | Report discussing varnish formation on bearings, oil refining improvements, bore finish, and aircraft diesel engine technology. | ||
| View original record | Design Page 80 Serial No. 80 CY 1/5/Mar.30.40 Symposium on varnish formation sent you with my January S.A.E. report. Corrosion of cadmium bearings is also a function of temperature. The Ford is… | ||
| img047 | Letter discussing the development of the Aspin valve and the Bessler turbo-supercharger. | ||
| View original record | Rm. - page 6 Serial No. 60 OY 1/D/Mar.30.40 opportunity to see Briggs' development of the Aspin valve. This is now on the Navy secret list and I shall not see it unless the B.F.C. can exert some… | ||
| img048 | Gear design, referencing Almen's 1937 paper on transmission gears and subsequent developments. | ||
| View original record | Serial No 21 Rm page 2 2) Drummond of National Broach, is at work with rights to get the gear grinding out of their system. He says the actual bedding errors, lack of parallelism under load, etc.,… | ||
| img049 | Epicyclic gear information, charts, ratios, and special applications. | ||
| View original record | Serial No 21 On page 3 Oy 10/10/Mr 12 40 same problems as helical, since the actual bedding lines do not stay straight after quenching due to twist or tapering of the gear in quenching. 4. Epicyclic… | ||
| img050 | Discussion with Packard on engine design ideas, including injection engines and bore/stroke ratios. | ||
| View original record | Serial No. 53 OY 13/D/Mar.26.40 Handwritten: Ev Please circulate to design office & keep in your files Rolls-Royce, Ltd. Derby, England March 26, 1940 Hives Packard Ideas (March 25, 1940) Injection… | ||
| img051 | Big end bearings, fatigue tests, and automatic car transmissions. | ||
| View original record | Hm. - page 2 Serial No. 53 CY 13/D/Mar.26.40 stay with 12 cylinders in Vee or flat formation and "blow up" the cylinder bores. Big Ends In connection with this, he has done intensive work on big end… | ||
| img052 | Technical comparison and design breakdown of a Cotal magnetic clutch versus fluid clutches, with details on its construction. | ||
| View original record | Rm. - page 3 Serial No. 53 OY 13/D/Mar.26.40 At the same time, considers Cotal magnetic clutch in principle is greatly superior to fluid clutches as used on Olds Hydramatic. Trouble with latter is… | ||
| img053 | Automatic transmission systems, discussing overgear, creeping, and comparing competitor technologies. | ||
| View original record | Rm. - page 4 Serial No. 53 OY 13/D/Mar.26.40 way up taken care of principally by switches worked from accelerator pedal. If car coasts down a hill in overgear, it stays in overgear and does not free… | ||
| img054 | Manufacturing suggestions for supercharger rotors and other parts. | ||
| View original record | Rm. - page 5 Serial No. 53 OY 13/D/Mar.26.40 bits of work, especially the G.M. Blackstone saw this in Research. Cannot a clever specialist like Lucas or Hardy Spicer, be per-suaded to make these in… | ||
| img055 | Summary of a meeting discussing developments in rubber technology, its properties, and applications. | ||
| View original record | Serial No 42 EV OY 3/D/Mar.25.40 Mar 25,1940 Rolls-Royce, Ltd. Derby, England Rubber S.M.Cadwell of U.S.Rubber Co.,Detroit A.S.T.M. Meeting,March 6,1940. Re. At the same meeting of the A.S.T.M. on the… | ||
| img056 | Paper by Sidney M. Cadwell titled 'Rubber of Tomorrow' discussing the testing and fatigue properties of new rubber materials. | ||
| View original record | RUBBER OF TOMORROW By Sidney M. Cadwell Before beginning a discussion of new materials or new products may I make a few comments on testing? In the accelerated pace which research & development have… | ||
| img057 | The fatigue testing of rubber under various conditions of strain, oscillation, compression and extension. | ||
| View original record | -2- The fourth slide illustrates various conditions of initial strain and constant oscillation cycles. If the unstressed length is L_o we may compress it and apply a compression cycle; or we can have… | ||
| img058 | The properties and applications of synthetic rubbers and rubber sponge. | ||
| View original record | -3- We can conclude from these results that we should examine our usage of rubber in order to get greater dynamic fatigue life, or perhaps to get equal life with smaller amounts of material. I have no… | ||
| img059 | The properties and applications of sponge and cellular rubber, including potential uses in safety equipment and insulation. | ||
| View original record | -4- Here is a sample of such a sponge. It is a useful material which finds application in a wide variety of products. More recently we have found that a very similar structure can be made by our… | ||
| img060 | Technical document detailing the properties and applications of cellular rubber, including insulation and bonding to metal. | ||
| View original record | -5- It is very effective in both cases. Here are 2 boxes of equal size and thickness. One is made of pinewood, the other of cellular rubber. In each there is an electric horn which I can turn on from… | ||
| img061 | The progress of pneumatic tyre design, focusing on the use of rayon and synthetic materials. | ||
| View original record | -6- Tires: The pneumatic tyre is still of course, the major use of rubber in transportation. Progress in design and construction of tyres, particularly for heavy duty on fast trucks and buses is… | ||
| img062 | Graph showing the results of fatigue tests on rubber, plotting life cycles against percentage extension and compression. | ||
| View original record | Ogs.P/253340 Serial 42 OSCILLATION CYCLE 200% OF UNSTRESSED LENGTH. LIFE TEST IN KILOCYCLES 10⁵ 10⁴ 10³ 10² 10¹ PERCENT COMPRESSION 100 PERCENT EXTENSION AT MID STROKE 100 200 300 400 500 600 FATIGUE… | ||
| img063 | Optimal temperatures and procedures for stress releasing valve springs after shot blasting. | ||
| View original record | Serial No 37 Rolls-Royce Ltd. Derby, England Rm Valve Springs Received your cable: "After shot blasting valve springs at what temperature is stress releasing carried out. Our present practice 350… | ||
| img064 | Detailed process for manufacturing and treating springs, including specifications for heat treatment, shotblasting, and stress limits. | ||
| View original record | -2- OY 9/D/MAR.22.40 . (a) The spring is wound with a liberal excess length. (b) Ends are ground after winding before heattreat to save expense of grinding the hardened wire. (c) Springs would then be… | ||
| img065 | Valve spring design, cold-pressing techniques, and testing methodologies. | ||
| View original record | -3- 7) Furthermore, to judge by results on torsion rods, I think the spring makers generally have not studied sufficiently the effects of the cold-pressing. A cold-press which only settles the spring… | ||
| img066 | Report on American cars, specifically on the material thickness used for petrol tanks. | ||
| View original record | For General Ev. Rm.7/ML.12.3.40. Herewith a copy of Olley's report on American cars for 1940. You will note amongst other things that they use .025 material for petrol tanks. I do not think we should… | ||
| img067 | Performance characteristics and gear configurations of Wright engines. | ||
| View original record | Serial No 11 OY 2/D/Mar 9-40 March 9 1940 Rolls-Royce Ltd. Derby England Rn In my notes to you on the Wright engines, I left out the thing which probably interests you most-the February schedule of… | ||
| img068 | Visit to G.M. Research concerning the development and testing of slipper type connecting rods. | ||
| View original record | Serial No. 8 OY 8/D/Mar 7 40 Rolls-Royce, Ltd. Derby, England March 6, 1940 Visit to G.M. Research Connecting Rods Rm In a visit to G.M. research yesterday with Lessels and Peterson of Westinghouse… | ||
| img069 | Technical report on slipper rod and bearing design, materials, and alternatives. | ||
| View original record | Serial No 8 Rm page 2 OY 8/D/Mar 7-40 On the slipper rod the actual bearing area is about equal to the useful area of the compression side of a conventional rod. The ends are cut off as indicated and… | ||
| img070 | The development of several radial engines, including Diesel and water-cooled types. | ||
| View original record | Serial No 8 Rm page 3 OY 8/D/Mar 7.40 Radial Engines Ripingille said they were working on three sizes: 1. A radial type Diesel (I believe) with 6" cylinders, 100 H.P. per cylinder and 130 B.M.E.P. 2… | ||
| img071 | Arguments for a specific engine design, focusing on fuel injection and gearing. | ||
| View original record | Serial No 8 Rm page 4 OY 8/D/Mar 7 40 General arrangement of engine is shown in Fig. 2.Please don't re-gard this as anything but a very rough indication. Rip. gave us several arguments for it: It is… | ||
| img072 | Car design observations at G.M. Research and production efficiency ideas from an aircraft industry article. | ||
| View original record | Serial No. 7 OY 7/D/Mar.7.40 March 7, 1940 Rolls-Royce, Ltd. Derby, England Dms. Car Work 1) It may interest you that on a visit to T.P. Chase at G.M. Research Monday morning, we found him working on… | ||
| img073 | Small-quantity automobile body production, aircraft industry practices, sheet metal work, and material tolerances. | ||
| View original record | Serial No. 7 Rx. page 2 OY 7/D/Mar.7.40 "---------structural engineers maintained close contact with the loft department --------" "---------Blueprints are eliminated." page 6 "-----calls for full… | ||
| img074 | Comparison of American and British sheet metal practices, gauges, and costs for car body construction. | ||
| View original record | Serial No. 7 H.R. page 3 may be broken or strained out of shape by putting in an oversize sheet. There is a steady tendency to ship oversize sheets so as to do as little rolling as possible to the… | ||
| img075 | Different drafting and design methods, comparing an aluminum sheet method with the Cadillac system. | ||
| View original record | Serial No. 7 Rn. page 4 enamelled aluminum sheet, used in coachwork, which found an un-fortunate entrance into engine and chassis work about 1930. This aluminum sheet method was almost worse than the… | ||
| img076 | Insulating front suspension from road noise, comparing Packard and Opel Kapitan schemes for the 'Myth' project. | ||
| View original record | Ev. Rm.4/ML.5.3.40. Here is a copy of Olley's recent report of a visit to the Proving Ground, which contains some very useful information. With regard to insulating front suspension from road noises:… | ||
| img077 | Conversation with Mr. Heron regarding engine valve technology, problems, and potential solutions. | ||
| View original record | Serial No 4 OR S/D/Mar 4 40 March 4 1940 Rolls Royce Ltd. Derby, England EH Had a talk to Mr Heron who came to see me to-day in connection with the Jonly presentation on March 19 and covered a wide… | ||
| img078 | Hollow-head valves, supercharger designs, and fuel injection systems for aircraft engines. | ||
| View original record | Serial No 4 page 2 Rm. page 3 OYS/P/Mar 4 40 He obviously believes that an engine (like the R.R. or Allison, which cannot use a hollow-head valve, is missing something of considerable importance. Is… | ||
| img079 | Safety fuels, spark injection, carburetters, octane ratings, and nitriding steels for aero engines. | ||
| View original record | Serial No 4 R Page 3 Pan-American has said it will not buy another plane with an engine burning gasoline, and is going all out for safety fuels with spark injection. It is not believed that safety… | ||
| img080 | Steel orders, Vulture valve springs, and automatic transmission technologies. | ||
| View original record | Serial No 4 on page I propose trying them on your steel order, which, by the way had not yet arrived. (b) Valve springs. F.R.B. is an advocate of carbon steel valve springs, basing this on early… | ||
| img081 | Letter from Lemaire Tool & Mfg. Co. regarding direct gasoline injection for aviation engines. | ||
| View original record | To go with serial 4 LEMAIRE TOOL & MANUFACTURING CO. 2657 South Telegraph Road Dearborn, Michigan Feb. 28, 1940 Rolls-Royce, Inc., 1-251 General Motors Bldg., Detroit, Mich., Mr. McArthur Gentlemen:… | ||
| img082 | Agenda and details for a conference on Plain Bearings, Surface Finish, and Lubrication at M.I.T. | ||
| View original record | OY 3/DS/Feb 7 40 Feb 7 1940 Rolls-Royce Ltd. Derby, England Rm Plain Bearings and Surface Finish (1) A Conference will be held for M.I.T. in June at which a real attempt will be made to bring out the… | ||
| img083 | Plain bearings and surface finish, detailing industry visits and participants for a conference. | ||
| View original record | Rm -2- OY 3/DS/Feb 7 40 Plain Bearings and Surface Finish 9. Wear Battelle Inst. or Lessels Gen. Mot. The discussions in the afternoon will embrace the Machine Tool, Automobile, Aircraft and Oil… | ||
| img084 | Summary of findings on plain bearings and surface finishing techniques. | ||
| View original record | Rm. Plain Bearing and Surface Finish -3- articles of faith.And G.M. are contributing more to the subject (such as oil tests,new bearing metals,thin white metals,etc.) than Chrysler is doing. (4) On… | ||
| img085 | Characteristics and applications of plain bearings and surface finishes. | ||
| View original record | -4- Rm Plain Bearings and Surface Finish OY 3/DS/Feb 7 40 (f- In the average plain bearing with something approaching ideal film lubrication there is little doubt that smooth finish is an advantage in… | ||
| img086 | Cover memo forwarding a report from Olley for future discussion. | ||
| View original record | To Ev. from Rm. c. Ev/DB. c. Rm/FJH. c. Rm/FD. c. Rm/Wym. c. Rm/Clm. Herewith copy of a report I have received from Olley. We will have a discussion round this at some later date. Rm | ||
| img087 | Letter discussing American drop head motor car practices and torsional stiffness comparisons. | ||
| View original record | Copy of letter received from R.R.Incorporated. Rolls Royce Limited. Derby, ENGLAND. Jan.11, 1940. Rm: Re: CAR WORK. Just received yours of Dec.22nd. While the General Motors Building is the best… | ||
| img088 | Page of a report discussing torsional stiffness in car design, comparing various models and addressing vehicle weight. | ||
| View original record | - 2 - There are two ways of getting this torsional stiffness. One, which is the lighter, is to use the sloping windshield pillars and the roof rails as the main torsional structure. The other, used by… | ||
| img089 | Rationalization of car structure, comparing different construction methods, and the future of frameless and fram-body designs. | ||
| View original record | - 3 - It is a matter of great personal regret to me that this business of rationalizing car structure has now been put into other hands so that I cannot hope to get back into this struggle. Actually,… | ||
| img090 | Technical analysis of car body rumble, floor materials, and frame construction on various models. | ||
| View original record | - 4 - at Vauxhall. We demonstrated that :- (a) The source of most present body rumble is the tin floor. (b) The only way to make a tin floor quiet is to crumple it up as on the Opel Kapitan. This… | ||
| img091 | Report discussing four-link coil spring suspension, Oldsmobile gearboxes, and laminated glass. | ||
| View original record | - 5 - Your item No.9. The four-link coil spring suspension which has been developed by Bob Schilling during the past year, is subject to patents issued to me provisionally in England and applied for… | ||
| img092 | Letter from Maurice Olley discussing changes to headlamp design and vehicle chassis stiffness. | ||
| View original record | - 6 - glasses are less splinterable than the old ones and they do not turn yellow with age. I will learn more about these and let you know. Your Item No.2 (Headlamps) American headlamps are not going… | ||
| img093 | Notes on the design and characteristics of a four-link coil spring rear axle. | ||
| View original record | Notes on Four Link Coil Spring Rear Axle. (1) The most important point is that, without the use of a Panhard rod with its attendant unsymmetrical action, the design gives a high pivot point for the… | ||
| img094 | Coil spring suspension systems, their benefits over leaf springs, and testing requirements. | ||
| View original record | - 2 - (6) contd. It loads the lower link rubbers however and on American cars of 1940 with present ideas of allowable maximum stress (approximately 130,000 lbs. per square inch without Wahl… | ||
| img095 | Blueprint detailing the general construction and geometry of a 4-link coil spring rear axle suspension system. | ||
| View original record | II, UPPER VEE RODS, STABILIZER SLAB, GENERAL CONSTRUCTION, LOWER VEE RODS, 4 LINK COIL SPG., REAR AXLE, A., INTERSECTION OF, LOWER VEE., PLAN SHOWING, INTERSECTION POINTS., B, INTERSECTION, OF UPPER… | ||
| img096 | Diagrams showing understeer line and an improved 4-link coil spring rear axle construction. | ||
| View original record | SIDE VIEW SHOWING UNDERSTEER LINE, A, B, C, UNDERSTEER LINE, 2, 'IMPROVED' CONSTRUCTION, SHORTER, STIFFER SPRING, FREE FROM 'SURGE' TROUBLE., 4 LINK COIL SPG REAR AXLE, ROLLS-ROYCE LTD., PRINT ROOM, 2… | ||
| img097 | Schematic of a 9-cylinder radial engine showing the injector pump, servomotor, and air control valve. | ||
| View original record | Dynamic pressure, Air control valve, Servomotor, Injector Pump, Oil out, 1, 2, 3, 4, 5, 6, 7, 8, 9 | ||
| img098 | Diagram of the Ljungstrom injection system with components such as the air control valve and fuel pipe. | ||
| View original record | LJUNGSTROM INJECTION SYSTEM, Patent applied for, To servomotor, Air control valve, Fuel Pipe, Mixture Ratio Adjustment, Nozzle, Pab-14.40, 2-01-26., 3, 5 | ||
| img099 | Cross-section diagrams of a servomotor and an associated mechanism. | ||
| View original record | SERVOMOTOR oil in oil out Static Pressure | ||
| img100 | Cross-section drawing of a Ljungstrom Injector. | ||
| View original record | Dynamic Pressure Mixture Ratio Adjustment LJUNGSTROM INJECTOR Patent No 2.180 478 Scale = FULL Weight = 24 lbs. Feb.-12-40 2-01-25. | ||
| img101 | Cover memo for an attached document from Olley regarding work on crankshaft forgings in America. | ||
| View original record | To Ey. from Rm. c. CGH/EH. c. EV. c. Gnr. c. LdS. c. Rm/CMS. Rm.7/MH.30.1.40. CRANKSHAFT STEELS. Attached is a copy of a memo from Olley regarding the work he is at present doing in America on… | ||
| img102 | Letter from Rolls-Royce Inc. Detroit to Rolls-Royce Ltd. Derby regarding crankshaft production, comparing steel types and forging practices. | ||
| View original record | COPY. ROLLS-ROYCE INC. 2-251 General Motors Building, Detroit, MICHIGAN, U.S.A. OY.1/DS/Jan.9.40. January, 9th. 1940. Rolls Royce Ltd., Derby, England. Rm. Re: Crankshafts. I enclose copy of notes on… | ||
| img103 | Notes on a visit to the Wyman-Gordon Co. plant in Harvey, Illinois to see the first forging of Merlin crankshafts. | ||
| View original record | NOTES ON VISIT TO HARVEY, ILLINOIS, JAN. 5/40. On Friday, January 5, Lessells and I went to Wyman-Gordon Co. plant at Harvey to see the first forging of Merlin cranks. Forgings. WG have divided their… | ||
| img104 | Visit to Harvey, Illinois, concerning the forging process and steel quality for Merlin engine cranks. | ||
| View original record | Notes on Visit to Harvey, Illinois. Page 2. It is the breakdown die which determines grain flow, and American forging practice demands that the forging from the breakdown shall actually slip part way… | ||
| img105 | Notes from a visit to Harvey, Illinois, regarding steel forging practices, material analysis, and pricing proposals for aircraft steel. | ||
| View original record | Notes on Visit to Harvey, Illinois. Page 3 cranks of the order will come through uniformly and smoothly as a normal production run, whenever they are released. (Actually, if we are to get 2000… | ||
| img106 | Machining, nitriding, and steel selection for car cranks, including comparisons with American manufacturing practices. | ||
| View original record | The matter is still in the air. If it goes through our forging price will increase about $1.50 per crank. Machining. We put up to W.G. and Republic that there were three things we had to watch-- 1.… | ||
| img107 | Notes on steel types, machinability, hardening processes, and crankshaft manufacturing. | ||
| View original record | Notes on Visit to Harvey, Illinois. Page 5. Carbon steel at 3.1 is considerably less machinable than chrome-moly. steel at 380. An alternative is air-quench normalized 1045 steel at 217-241 Brinell.… | ||
| img108 | Notes from a visit to Harvey, Illinois, discussing steel types for small aero engine cranks. | ||
| View original record | Notes on Visit to Harvey, Illinois. Page 6. 4135. I mentioned Lycoming's use of 3140 steel, nitrided, on cranks for small aero engine. Mr. Wood objected to the nickel chrome steel for reasons stated… | ||
| img109 | 1935 visit to the USA to investigate chassis issues and research American automobile engineering trends. | ||
| View original record | To. Mr.Hives-Es/Gry. Mr.Spriggs. Mr.Wormald. Mr.Evernden. c. to EV. Hs/Gry.10/WW.2.1.36. VISIT TO U.S.A. - 1935. Ds. and the writer paid a short visit to the States, primarily to determine the cures… | ||
| img110 | Performance comparison against American cars and considerations for future vehicle design, including cornering behaviour and drivetrain layouts. | ||
| View original record | -2- Ha/Crr.10/E.B.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… | ||
| img111 | Comparison of chassis construction, noise insulation, and flexible flywheels against American cars like Cadillac, Briggs, and Hudson. | ||
| View original record | -3- 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 the front, the frame… | ||
| img112 | The major problems of the Ph.III chassis, focusing on tyre noise and gearbox clunking. | ||
| View original record | -4- Hs/Gry.10/EX.Z.1.36. 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… | ||
| img113 | Technical memo discussing American practices for gearboxes, road shocks, and engine mountings. | ||
| View original record | -5- 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 out any 'secrets' other… | ||
| img114 | Observations on engine noise insulation, induction, percolation, and hot-spots. | ||
| View original record | -6- (2) Noise Insulation. This has been gone into earlier in this memo., and we think much more lavish use of noise insulating material should be made on the dashboard and floorboards. (3) 6-Cylinder… | ||
| img115 | Engine volumetric efficiencies, carburetter drains, and rubber slipper wheels with comparisons to American manufacturers. | ||
| 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… | ||
| img116 | Notes on road shocks, supercharging, and bearing materials. | ||
| View original record | -2- (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… | ||
| img117 | Notes on crankshaft bearings, clutches, frame construction, and competitor costs. | ||
| View original record | -9- 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 the Cleveland… | ||
| img118 | Answering questions on Buick oil coolers, General Motors crankcase ventilation, Hudson timing gears, and GM piston development. | ||
| View original record | -10- Ha/Gry.10/M.2.1.35. In answer to other questions :- (1) Buick have dropped their oil coolers, firstly because of expense, and secondly because considerable reduction in oil temperature was… | ||
| img119 | Acquiring 'skid pan' test equipment and sharing experimental results with Cadillac to improve car handling and springing. | ||
| View original record | -11- 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 complete motor cars. The… | ||
| img120 | Weight analysis of Pontiac cars, comparing figures and noting differences in bumper inclusion. | ||
| View original record | E1 To A. from [illegible] c.c. to WGH. c.c. to LG. c.c. to HDG. C. to EV. He/Rn.4/KW.16.4.34. POS 17 APR 1934 Received Here is the weight analysis carried out on Pontiacs as part of their general… | ||
| img121 | Weight analysis of the chassis and running gear components for a 4-door 1934 Pontiac. | ||
| View original record | WEIGHT ANALYSIS OF 4-DOOR 1934 PONTIAC. CHASSIS - RUNNING GEAR. lbs. Complete power plant 775.3 Hand Brake Lever & Brake & Clutch Pedals 11.8 Front Axle, Hubs, Drums, Bearings & Brakes 234.5 Rear… | ||
| img122 | Weight breakdown of chassis components, sheet metal, and lamps, with a total weight calculation. | ||
| View original record | -2- BALANCE OF CHASSIS INCLUDING SHEET METAL AND LAMPS. lbs. Rear Tire Carrier (Wire Wheels) 5.6 Radiator Splash Apron Front Fenders and Fender Irons 84.7 Rear Fenders 25.6 Running Boards & Side… | ||
| img123 | Detailed weight breakdown of vehicle components, body, equipment, and fluids. | ||
| View original record | -3- Body inc. Toe & Floor Boards, Mats, and Carpets (2-door for Chev. Std., 4-door for others) lbs. 847.4 Instrument body fittings 22.2 TOTAL BODY........................... 869.6 WEIGHT DRY WITH ALL… | ||
| img124 | Visit to the U.S. automobile industry, discussing riding comfort and independent front wheel suspension systems. | ||
| View original record | To - Sgr From - Hsy/Rm. C. to HGP. C. to EO C. to RWP. C. to EV. Received 10 APR 1934 VISIT TO U.S.A. JAN. - MARCH, 1934. THE AUTOMOBILE INDUSTRY. RIDING COMFORT. Independent front wheel suspension as… | ||
| img125 | Comparison of Chrysler Air-Flow cars with competitors, focusing on weight distribution, design, and coachwork. | ||
| View original record | -3- The Chrysler Air-Flow Cars have attempted to achieve the same results as G.M. by altered weight distribution. They have retained the conventional front axle. There is no doubt that the altered… | ||
| img126 | Comparison of American car manufacturing practices regarding body rigidity, aesthetics, and power unit silence. | ||
| View original record | -3- This may be discarded on all except custom built jobs where it may survive for the time being as such body rigidity does not equal all steel construction. The G.M. practice of mounting the running… | ||
| img127 | Engine development, including superchargers, bearings, and American automotive trends. | ||
| View original record | -4- Lastly, some of the accoustic work on dash insulation has helped them to keep noise out of the driving compartment. Therefore we know where our deficiencies lie. We were definitely impressed with… | ||
| img128 | Competitor engine developments, including crankshafts, dampers, and pistons. | ||
| View original record | -5- General Motors lab. are at present conducting tests on improving volumetric efficiency which is in parallel with our own project. They have also carried out a research on the deflection in valve… | ||
| img129 | Comparison of engine design practices, particularly American methods, concerning lubrication, piston rings, materials, and valve clearance. | ||
| View original record | -6- The practice of passing oil directly from the connecting rod big end to the cylinder walls either by a hole through the rod or grooves in the rod bearing has become almost universal. The object is… | ||
| img130 | Engine cooling systems, including radiator matrices, fans, and oil coolers, comparing manufacturing options and supplier capabilities. | ||
| View original record | -7- Hs/Rm.5/KW.4.4.34. COOLING. There is a matrix available about 15% more efficient than the one Marstons are just beginning to produce for us. The difficulty is to get it made in England in the… | ||
| img131 | Steering and transmission developments, including steering ratios, clutch design, and gearbox technology. | ||
| View original record | -8- STEERING. This has been assisted by independent wheel suspension and the full Marles with a two toothed follower is now in general use. The ratios are much lower than we could tolerate in England,… | ||
| img132 | Comparative analysis of hypoid rear axles and various braking systems used by competitors. | ||
| View original record | -9- The Hypoid rear axle does not seem to have gained ground. The only firm of any consequence using it are Pacards and they have not been entirely free from trouble. They have experienced… | ||
| img133 | Dynamos, starter motors, and car weights, with comparisons to American automotive practices. | ||
| View original record | -10- Hs/Rm.5/KW.4.4.34. DYNAMOS. It will be recollected that on the Bentley we reduced the speed and increased the size of the generator because we were afraid of running this machine at 7500 R.P.M.… | ||
| img134 | Proposing a weight analysis scheme and comparing car weights against American competitors. | ||
| View original record | -11- This car is full sized and has a straight eight engine almost exactly the same size as our 20/25. Also bumpers are fitted. These weights are not achieved by accident; most manufacturers have a… | ||
| img135 | Market intelligence report on future development trends in the American automotive industry. | ||
| View original record | -12- TREND OF FUTURE DEVELOPMENT. Cadillacs have been running cars with independent rear wheel springing for some time but it seems doubtful if they will alter the whole rear end design of the car to… | ||
| img136 | Summary and recommendation on future engineering developments, focusing on transmissions and independent front wheel suspension. | ||
| View original record | -13- HS/Rm.5/KW.4.4.34. There is a feeling in many quarters that the side valve engine has reached the limit of its development with regard to compression ratio and volumetric efficiency, and that… | ||
| img137 | Engineering document outlining opinions and recommendations for future automotive development and testing. | ||
| View original record | -14- It is the considered opinion of the G.M. engineers who have done the work on independent suspension that the Dubonnet scheme is inferior, though they admit that they favoured it to begin with. We… | ||
| img138 | Report analyzing and comparing automotive components and production methods with American competitors. | ||
| View original record | -15- That an analysis to explain the valve spring trouble on the Bentley in the U.S.A. should be conducted. We recommend that our starter motors and dynamos should be brought into line with current… | ||
| img139 | List of specialist part suppliers and the components they provide. | ||
| View original record | -16- Ha/Rn.5/KH.4.4.34. In the first place they have behind them the engineering departments of the specialists' part producing plants. In a previous report we went into some detail describing the… | ||
| img140 | Comparison of manufacturing strategies and durability testing standards with American automobile companies. | ||
| View original record | -17- We appreciate we have not such a plethora of specialist at our disposal here, but on the other hand, a number of them are represented in England, and there are other English specialists whose… | ||
| img141 | Comparison of American and British car testing facilities, performance philosophies, and potential design considerations. | ||
| View original record | -18- In spite of the fact that the American Manufacturer has zero weather at his elbow for testing for four months in the year, he makes extensive use of the cold room during the remaining eight… | ||
| img142 | Summary of the features of the new La Salle car, a Cadillac product. | ||
| View original record | Re Eng. from HW/RWH. c. to WDX. c. to HJS. c. to EV. HS/Rm.1/KW.4.4.34. The New La Salle Car. Latest Cadillac Product selling for £300 in U.S.A. This is an interesting Car as it is Cadillacs attempt… | ||
| img143 | Numbered list of vehicle component features and improvements. | ||
| View original record | -2- Hs/Ru.1/KW.4.4.34. (11) Graphite block clutch thrust. (12) Marles steering. (13) Radiator cowl improving efficiency 10%. (14) Thermostat bye pass type of temperature control. (15) Automatic… | ||
| img144 | Road test of a Bentley car in the U.S.A., covering weather, road conditions, and identified faults, particularly with the suspension. | ||
| View original record | To - [redacted] From - [redacted] [redacted] [redacted] C. to EV. Hs/Rn.3/KW.4.4.34. BENTLEY CAR IN U.S.A. This Car was driven Westward to a point 100 miles beyond Chicago, and South as far as Saint… | ||
| img145 | Vehicle performance issues concerning frame jellying, lubrication in cold weather, and ground clearance in snow. | ||
| View original record | -2- At high speeds the car was comfortable and held the road well, even when the front shock absorber load had been considerably reduced. (2) FRAME JELLYING. This was noticeable from the wing… | ||
| img146 | Vehicle issues including frozen brakes, gear ratios, valve spring failures, and radiator lag. | ||
| View original record | -3- (5) FROZEN BRAKES. Powder snow can penetrate the brake shafts in the front axle and, after being thawed in a garage, will freeze solid and cause the brakes to stick on. It is difficult to know how… | ||
| img147 | General equipment and carburetion for cars intended for the American market. | ||
| View original record | -4- Ha/Rm.S/KW.4.4.34. (10) GENERAL EQUIPMENT. For a car to run in America, bumpers and an interior heater are a necessity. (11) CARBURETION. On the whole, once the car had been started it ran as well… | ||
| img148 | The performance and characteristics of a Graham Paige centrifugal blower supercharger. | ||
| View original record | To: [Illegible] [Illegible] [Illegible] [Illegible] c. to E.V. [STAMP: RECEIVED APR 8 1934] SUPERCHARGING BY CENTRIFUGAL BLOWER. GRAHAM PAIGE. Contrary to expectations, this method of car… | ||
| img149 | Report discussing engine development points including supercharger silence, fuel, cooling, and oil temperatures. | ||
| View original record | -2- Other points discussed were :- SILENCE. WHAT WAS THE GREATEST DIFFICULTY ENCOUNTERED ? The supercharger runs at 5.75 engine speed and is driven off the 1.5 engine speed shaft by a single reduction… | ||
| img150 | Engine components including big end bearings, carburetter with blower, and supercharger construction. | ||
| View original record | -3- BIG END BEARINGS. Interesting in that the sideways location is on the steel rod instead of white metal. This gives a greater effective big end length, stronger rod and a much cheaper construction.… | ||
| img151 | Blower efficiency and a summary of a supercharged car, with comparisons to Graham Paige and Duesenberg models. | ||
| View original record | -4- BLOWER EFFICIENCY. Graham Paige have designed and built this blower themselves with a little assistance from one of Duesenburgs men. They know as an approximate figure that the blower efficiency… | ||
| img152 | Graph plotting intake manifold pressure and vacuum against engine RPM for supercharged and non-supercharged engines. | ||
| View original record | INTAKE MANIFOLD PRESSURE 3 1/4 x 4 SUPERCHARGED ENGINE RATIO SUPERCHARGER TO CRANKSHAFT 5.76 : 1 INCHES OF MERCURY ATMOSPHERE LINE INTAKE MANIFOLD VACUUM 3 1/4 x 4 ENGINE NOT SUPERCHARGED CARBURETTER… | ||
| img153 | Performance curve graph comparing the effect of a supercharger on a Graham 8-cylinder engine's power and efficiency. | ||
| View original record | FIRM: GRAHAM MODEL: 67 & 69 SERIAL Nº: TEST Nº: 326-4-5A. Nº CYL: 8 BORE: 3 1/4 STROKE: 4 DISPLACEMENT: 265.4 COMPRESSION RATIO: FUEL: GASOLINE FOR DETAILS SEE SPECIFICATION SHEET PAGES 6 & 14 AND LOG… | ||
| img154 | Report from the U.S.A. on a valve spring failure, subsequent engine damage, and cold weather performance. | ||
| View original record | COPY OF REPORT RECEIVED FROM MR. IN U.S.A. DATED 27.2.34. To. Mr. Hives FROM MR/Rs. c. to Wormald c. to Platford c. to Hardy c. to EV. Re/Rs.11/KW.9.3.34. The twelfth valve spring failed last night… | ||
| img155 | Vehicle comparisons, valve spring failures, Bentley ground clearance issues, and travel plans from Detroit. | ||
| View original record | -2- I shall get at least a comparison between the La Salle and the new small Buick before I leave Detroit. I feel that the exceptional cold must have had something to do with the valve spring… | ||
| img156 | Report from the U.S.A. discussing the acquisition of a General Motors La Salle car for engineering analysis. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rm, IN U.S.A. DATED 17.2.34. Hs/Rm, 7/KW.3.3.34. [Stamp: Received MAR 1934] EV CARS TO BRING BACK. I gave Seaholm a specification of the parts I wanted in order to fit the… | ||
| img157 | Car comparisons, parts compatibility, solder specifications for radiators, and front-end drives. | ||
| View original record | -2- I believe this car will surprise us as to the results that can be obtained with the simplest possible layout. When I get back to Detroit I shall have the opportunity of having a real run round in… | ||
| img158 | The existing state of front-end drives in American cars, comparing gear versus chain systems. | ||
| View original record | -3- Facts about the existing state of front end drives in U.S.A. seem to be as follows. The only people using gears are Ford (Textolite), Chevrolet, Buick and Nash. Chevrolet are flirting with a… | ||
| img159 | Engine component choices, comparing timing gears and chains, with references to competitor vehicles like Cadillac, Ford, and Lincoln. | ||
| View original record | -4- I apologise for writing so fully on this, but the money we spend getting timing gears quiet and the dissatisfaction often caused is the justification. The Morse Co. claim that spring driven… | ||
| img160 | Graph of valve lift versus crankshaft degrees, for use on a C.A.C. engine with a hydraulic tappet. | ||
| View original record | TO BE USED ON C.A.C. WITH HYDRAULIC TAPPET VALVE LIFT INS .020 .015 .010 .005 CRANKSHAFT DEGREES 0 10 20 30 40 G.M. 347. 7-32 PRINTED IN U.S.A. | ||
| img161 | Report from the USA on valve spring and radiator failures, with updates on oil cooler and shock absorber development. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rn. IN U.S.A. DATED 20.2.34. To. [illegible] C. to [illegible] C. to [illegible] C. to [illegible] C. to [illegible] c. to E.V. [STAMP: P R C 10 MAR 1934 Received.] I… | ||
| img162 | Minutes of the Coachwork Sub Committee meeting discussing tool accommodation and luggage grids. | ||
| View original record | SgN MINUTES OF THE MEETING OF THE COACHWORK SUB COMMITTEE HELD ON FRIDAY, FEBRUARY 23rd, 1934. PRESENT: C. (In the Chair) Cx. EV. Hn. Tr. 1. Minutes of last Meeting (26.1.34). These were read and… | ||
| img163 | Standardization of Saloon and Coupe bodies, including revised dimensions and supplier negotiations. | ||
| View original record | PAGE TWO. It is understood that W. will be asked to consider the possibility of improving the P. W. scheme. 4. STANDARDISED BODIES. Following the inspection of a Park Ward drawing of a Saloon with an… | ||
| img164 | Meeting notes discussing vehicle body modifications, including colour schemes and lowering step irons. | ||
| View original record | PAGE TWO. To carry us over the time which must elapse before the Barker batch bodies can be available, Park Wards may have to put in hand a small quantity of (say) 5 or 10 Coupes, and Hn. is to… | ||
| img165 | The merits of toughened glass over reinforced laminated glass for vehicle windows. | ||
| View original record | PAGE FOUR. 8. REINFORCED GLASS. A letter from Park Wards was read in which they mentioned the difficulties they have with reinforced glass of the normal laminated pattern, i.e., a sheet of celluloid… | ||
| img166 | Importing a Cadillac, customs duty considerations, and comparison with Bentley and a future 12-cylinder model. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rn. IN U.S.A. DATED 16.2.34. To Dr. from HS/Rn. [crossed out] C. to Hives C. to R. C. to Pgy. C. to W.A.R. c. to E.V. ✓ C. to Mr H. HS/Rn.2/KW.26.2.34. Have received your… | ||
| img167 | Competitor vehicle analysis (Terraplane, Cadillac, Buick) for product improvement. | ||
| View original record | -2- I suggested the Terraplane 6 with a view to improving our existing products. This car however can be tried and examined any time after April in England, as it will be widely sold, so that if we… | ||
| img168 | Outlining a US trip itinerary, notes on a Bentley test, and other business matters. | ||
| View original record | -3- Hs/Rm.2/KW. 26.2.34. Muncie. An off to Wright Field, Warner Gear Co. at Delco at Anderson, Delco at Dayton etc., and then back to the coast to Langley Field. Hope to reach New York about March… | ||
| img169 | Vehicle performance and issues encountered during testing in American winter conditions. | ||
| View original record | COPY OF REPORT RECEIVED FROM HH. in U.S.A. DATED 17.1.34. From Hs/Rm. C.c. to Nor. C.c. to H. C.c. to Ey. Ev. C.c. to Ba. Gx. C.c. to Hdy. Mx. C.c. to EP. Rn. I am now suffering American winter… | ||
| img170 | Page two of a letter discussing travel plans and where to forward mail. | ||
| View original record | -2- Hs/Rm.5/MJ.27.1.34. Cont'd. I expect to leave Detroit to go to Cleveland, Dayton, Washington, Langley Fiels, etc., about Feb.10th. so after getting this you had better address any mail to c/o.… | ||
| img171 | Report from the U.S.A. on issues with a Bentley, including engine boom, brake problems, and commentary on independent suspension. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rm. IN U.S.A. DATED 30.1.34. Sg. From Hs/Rm. c. to Wor. c. to E. c. to By. c. to Da. c. to Hdy. Hs/Rm.5/MA.12.2.34. I have now got the Bentley to Detroit. It has occupied… | ||
| img172 | Engine and body noise, resonance, and potential acoustic solutions. | ||
| View original record | -2- Hs/Rm.5/NA.12.2.34. Cont'd. In view of this I may stay a fortnight in Detroit on engine design, eight and 12 cyl. elimination of body resonance, exhaust and intake silencers, etc., then go to… | ||
| img173 | Exhaust systems, noise silencing, and lessons learned from Cadillac. | ||
| View original record | -3- Hs/Rm.5/WA.12.2.34. Cont'd. They have accepted that you must use a noise measuring appartus for small differences, I shall go to the proving ground to see just what set-up they have. The enclosed… | ||
| img174 | Engine noise, vibration, and competitor analysis of Cadillac's engine and electrical systems. | ||
| View original record | -4- Ha/Rm.5/MA.12.2.34. Cont'd. (5) They too are troubled with "Shell Noise". They find it is reduced if they use the largest practical diameter of pipe from the manifold to the silencer, on the 12… | ||
| img175 | Notes on Delco high-speed coils, starting systems, dynamos, and suspension. | ||
| View original record | -5- He/Rm.5/MA.12.2.34. Cont'd. Delco High Speed Coil. They know nothing of this, that is the one with the small vibrator. Starting. On the 12 & 16 cylinders they use 26-1 starting motor ratios. One… | ||
| img176 | Technical note on engine inertia, wing mounting, frame frequency, volumetric efficiency, and clutches. | ||
| View original record | -6- Hs/Rm.5/MA.12.2.34. Cont'd. Engine Inertia. The American engines are so heavy and have such a large moment of inertia that if front engine feet are used to stiffen the frame, the mass of the… | ||
| img177 | Report from the USA on an investigation into Textolite timing gears at Buick. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rm. IN U.S.A. DATED 4.2.34. To: [Redacted] c.c. to [Redacted] c.c. to [Redacted] c.c. to [Redacted] e. to EV. TEXTOLITE TIMING GEARS. ENGINEERING OPINION. I investigated… | ||
| img178 | Manufacturing, inspection, and erection procedures for gears, with notes on Buick's engineering practices. | ||
| View original record | -2- (2) Rough cut on a Gould & Eberhardt. This leaves .015 on tooth face each side. (3) Finish cut on Fellows. This found more satisfactory than hobbing. High speed cut used to get clean finish. This… | ||
| img179 | Summary of design features from a competing manufacturer's new light eight vehicle. | ||
| View original record | -3- They are making a small light eight to be somewhere in the Pontiac class; i.e. just better than the Chevrolet, so that they can get a reasonable volume of production. They have a spring drive in… | ||
| img180 | Report from the U.S.A. on competitor developments in aluminium connecting rods, pistons, and clutches. | ||
| View original record | COPY OF REPORT RECEIVED FROM Ra. IN U.S.A. DATED 6.2.34. [Illegible distribution list, crossed out] c. to E.V. Hs/Ra.9/KW.19.2.34. [Stamped: RECEIVED 21 FEB 1934] ALUMINIUM CON. RODS. Cadillacs have… | ||
| img181 | Car suspension development and a comparative analysis of competitor vehicles, particularly Packard and Cadillac. | ||
| View original record | -2- SUSPENSION. Have been following Cy's efforts to get production cars to ride well. Results now good. The slightest friction or excess damping on the front causes pitching in the rear and ruins the… | ||
| img182 | Notes on crankshaft specifications, balancing procedures, a crank damper design, and gearbox characteristics. | ||
| View original record | -3- CRANKSHAFT. 12 cyl. Pins 2 1/4 dia. 2 1/4 long. Journals 2 3/4 dia. Central mains 1 3/8 long, 80% balanced. Shaft length flywheel to termination of front bearing 33-11/16". 4 bearing shaft 60%… | ||
| img183 | Notes on gearbox, dashboard, clutch, and component weights, with a diagram of a synchro mesh cone. | ||
| View original record | -4- They pair off gears in a silence room before fitting in box. They use a pot lap much as we do on aero gear splines. They use a synchro mesh cone of 6°, width of face 7/16" dia. at large end 3… | ||
| img184 | And blueprint diagram analysing Packard's engine mounting system. | ||
| View original record | -5- ENGINE MOUNTING. Packards are enthusiastic about their engine mounting. It appears to me to be an intelligent crib of the Chrysler with the merit that it avoids their patents. The great point is… | ||
| img185 | 8-cylinder engine design, comparing Cadillac La Salle crankshaft dimensions and American crankcase stiffness with Bentley components. | ||
| View original record | -6- Hs/Rm.9/KW.19.2.34. Whatever the merits of their theory, the front end of the 320 cu. inch frame with a cross in it and without a bumper stabiliser is the steadiest I have seen for a long time.… | ||
| img186 | Comparison of American engine manifolding and performance with Rolls-Royce and Bentley equivalents, including torsional vibration data. | ||
| View original record | -7- HS/Rm. 9/KW.19.2.34. MANIFOLDING. There is now almost a standardised treatment of the straight eight induction system in which the exhaust and inlet are taken out on the same side and a simple hot… | ||
| img187 | Report from the U.S.A. discussing and comparing the suspension systems of Chrysler, General Motors, and Mercedes vehicles. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rn. IN U.S.A. DATED 9.2.34. [Redacted distribution list] Hs/Rn.2/KW.19.2.34. [Stamp: RECEIVED 20 MAR 1934] SUSPENSION. I cabled you that I was not impressed with the Air… | ||
| img188 | Report comparing Cadillac, Packard, and Chrysler gearbox and transmission systems. | ||
| View original record | -2- My one criticism of the Cadillac scheme is that, having avoided the extra wt. of the bell crank in the suspension proper, they still have to incorporate it in the shock absorber. I have been… | ||
| img189 | Future developments, steering shocks, and a comparison of competitor engine weights. | ||
| View original record | -3- FUTURE DEVELOPMENTS. Chryslers are making a determined effort to simplify their transmission. At present they have :- (1) Free wheel; (2) Synchro-mesh; (3) Vacuum control; (4) Overspeed epicyclic.… | ||
| img190 | Competitor vehicle performance (Cadillac, Chrysler) and issues with Bentley steering in cold weather. | ||
| View original record | -6- Hs/RM.2/KW.19.2.34. expiring. The vacuum control and starter both seem to be expiring. Cadillac's have started up quite a considerable supercharge campaign. Am sending you a drawing of the… | ||
| img191 | Notes on vehicle suspension characteristics, weight distribution testing, and steering ratios. | ||
| View original record | -5- Hs/Rn.2/KW.19.2.34. Further to my previous note - (1) Oy. uses 3" clearance to rubber buffer and then low rating buffer allowing 1" movement before coming solid. (2) He still wants 4" re-bound.… | ||
| img192 | Report from the U.S.A. on the road performance and engine smoothness of various American cars. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rm. IN U.S.A. (UNDATED). To - [REDACTED] From Hs./Rm. [REDACTED] [REDACTED] [REDACTED] c. to EV. Hs/Rm.3/KW.19.2.34. ROAD PERFORMANCE AMERICAN CARS. I received your cable… | ||
| img193 | Comparison of straight-eight and V-eight engines on factors including silence, weight, installation convenience, cost, and power. | ||
| View original record | -2- SILENCE. It seems to be generally agreed that the line 8 is the easiest unit on which to silence both the exhaust and intake. WEIGHT. The straight eight, being less compact, is obviously heavier… | ||
| img194 | Report comparing the ride quality and mechanical noise of American cars (Buick, Cadillac, Pontiac) with their own products. | ||
| View original record | -3- HS/Rm.S/KW.19.2.34. Thus Buick's new small eight definitely breaks into the Chevrolet Pontiac class, while Cadillac's latest effort is definitely right in the Buick class. RIDING. I have so far… | ||
| img195 | Developments in hydraulic lash adjusters, brakes, valves, suspension, supercharging, and six-cylinder engines. | ||
| View original record | -4- I should be glad to have the latest details of where we have got to with our rocker hydraulic lash adjuster. Jardine is interested in making it if it is simpler for an O.H.V. engine than his own… | ||
| img196 | Vulture engine, American cars, travel plans, and a comparison of a V.8 Ford to a Bentley. | ||
| View original record | -5- HS/Rm.3/KW.19.2.34. Glad to hear that you got the Vulture running. I was afraid it would be a rough job. I don't see how we can ever run our 4 1/2 bore cyl. above 5 1/2-1 C/R. We shall have to… | ||
| img197 | Report from the U.S.A. on a bearing factory visit, engine components, and comparative road tests. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rs. IN U.S.A. DATED 15.2.34. Re-cd. from Mr/Rs. C. to W.O.B. C. to Hives. C. to Platt. C. to Rowledge. C. to Harvey. C. to E.V. C. to Hives. Hs/Rm. 2/KW. 24.2.34. Went to… | ||
| img198 | Analysis of competitor engine designs from Cadillac and Buick, with discussion on silent tappets, engine configurations, and coachwork. | ||
| View original record | -2- The Cadillac 16 power unit is so much better than the 12 that I wired you re bringing it back. We might as well have a good standard to aim at with our twelve. In spite of its great weight its… | ||
| img199 | The engineering challenges of combining chassis and coachwork, referencing Chrysler Airflow and Cadillac designs. | ||
| View original record | -3- Hs/Rm.2/KW. 24.2.34. As we come to the Chrysler air-flows, we get one stage further in combining the chassis and coachwork. Here it is quite impossible to tell where the chassis starts and and… | ||
| img200 | Visit to the Hudson Essex Plant, comparing the Terraplane 6-cylinder engine to the 20/25 unit. | ||
| View original record | COPY OF REPORT RECEIVED FROM Res. IN U.S.A. DATED 11.2.34. To. Mr. [Redacted] Mr. [Redacted] Mr. [Redacted] Mr. [Redacted] Mr. [Redacted] c. to EV. Mr. [Redacted] EV Yesterday I spent at the Hudson… | ||
| img201 | Analysis of an 8-cylinder engine's smoothness and a breakdown of its component dimensions. | ||
| View original record | -2- However, in actual practice it was indistinguishable in smoothness from the 8 cyl. up to 60 M.P.H. Above that speed roughness could definitely be felt on the gear lever as on our own cars, but… | ||
| img202 | American engine design features and summarizing potential development paths. | ||
| View original record | -3- reasonable service (T. slot as used by Cadillacs). The crankcase and cylinder block are admittedly cast en bloc cast-iron with double flywheel bearing cap and double central flange externally… | ||
| img203 | Comparative analysis of competitor engine, gearbox, and crankshaft damper designs. | ||
| View original record | -4- We ourselves can quickly find out how well this unit will stand up on the road. I met an Englishman who had done 25,000 on last year's model with no trouble. Hudson's output is now reaching 1,000… | ||
| img204 | Observations on various suspension types, frames, and pistons from competing manufacturers. | ||
| View original record | -5- HUDSON TYPE INDEPENDENT SUSPENSION. SPLIT AXLE TYPE. There has been no attempt to use very soft front springs with this axle; in fact the ride was not much better than with the conventional type… | ||
| img205 | Findings on piston ring design, oil supply, and connecting rod materials. | ||
| View original record | -6- (2) That they had to make their rings give higher unit pressure than ours to avoid blow by. They run .0435 ring depth per 1" of dia. with a free gap opening of .170 per 1". Use a special electric… | ||
| img206 | Engine detonation, including a consumption loop graph and M.E.P. limits for air-cooled versus water-cooled engines. | ||
| View original record | -7- He/Rm.14/KW.23.2.34. DETONATION. Heron says one of the best indications of detonation is to switch off momentarily, if all cyls. will cut out dead for about ten revs., no detonation. The other way… | ||
| img207 | Notes on Ethylene Glycol coolant properties, operating temperatures, and related engine component findings. | ||
| View original record | -8- Hs/Rm.14/KW.23.2.34. ETHYLENE GLYCOL. (1) Max. jacket temp. permitted on climb 300°F., usual operating temp. 250°F. which they are not supposed to exceed. (2) They cruise at 230°F. (3) They employ… | ||
| img208 | US automotive components including clutches, camshafts, and supercharging. | ||
| View original record | COPY OF REPORT RECEIVED FROM Rn. IN U.S.A. DATED 13.2.34. Hs/Rm.5/KW.23.2.34. To Mr. [illegible] Mr. [illegible] Mr. [illegible] Mr. [illegible] c. to EV. LONG CLUTCH. I send you a drawing of the… | ||
| img209 | Technical report discussing gearboxes, brake systems, shock dampers, and lubrication. | ||
| View original record | -2- They think the centrifugal easier to silence from Donsenburg's results but don't know much about it. Anyhow, they are starting a considerable research. GEARBOXES. A factor has been established… | ||
| img210 | Front end drive systems, comparing timing gears to silent chains, and issues with coachwork rattles. | ||
| View original record | -3- He/Rm. 5/KW. 23.2.34. FRONT END DRIVE. The following points emerge - (1) Silent chain drives are almost universal over here. (2) Cadillacs run 100 hour endurance tests at 4250 R.P.M. These chains… | ||