Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 24\1\        Box Selection

IdentifierEntry
Scan001 Analysis and critique of a Sunbeam piston design sent in by Seligmanns of Glasgow.
View original record C.J. 10/6/10 X246 10th June 1910. Re Sunbeam Piston. ES/D10610. With reference to the Sunbeam piston which Seligmanns, of Glasgow, sent in, I cannot quite see the reasoning that has brought about the…

Scan002 Piston difficulties, cylinder tightness, and achieving a smokeless exhaust.
View original record 10th June 1910. C.J. (2) to be very liable to work into one position. This may be a lucky one or a very unlucky one with regard to tightness of the cylinders. A great difficulty with pistons seems to…

Scan003 Trial run report on a 25/30 HP Sunbeam 6 Cylinder car.
View original record [Handwritten top left] 100th meeting [Handwritten top right] X446 REPORT ON TRIAL RUN ON 25/30 H.P. SUNBEAM December 16th 1911 6 Cylinder. On the road when on direct drive this car was very nice and…

Scan004 Sunbeam car, discussing engine cleanliness and a comparison of worm gears versus bevel gears.
View original record A great point about the Sunbeam car appeared to be the covering in and although the car had that morning been brought from Wolverhampton that morning and the roads were in a very bad state, when the…

Scan005 Issues with a Goshawk 11 fan mounting, including belt irregularity and vibration.
View original record To HS. from R. c. to CJ. c. to BY. c. to EP. RE. GOSHAWK 11. FAN MOUNTING. X.4237 X.446 I see no reason for the fan belt irregularity of which you complain. We have never had this trouble down here.…

Scan006 Extract regarding the violent servo-operated brakes on a 24/60 Sunbeam, relevant to the Hispano Suiza car.
View original record X.446. Extract from Hsl/LG9.11.23 - HISPANO SUIZA CAR. (X.4214) We have heard that the 4-wheel brakes operated by servo on a 24/60 Sunbeam are very violent in action. With the least pressure on the…

Scan007 Comparing the 20 HP Lanchester and 20 HP Sunbeam cars following tests at a motor show.
View original record X446 To R. From Hs/Rm. c. to CJ. RG. BY. c. to BA. E. EP. c. to Wor. Hs/RmL/LG13.11.23. X446 X441 We had an opportunity of trying several 20 HP. cars while we were at the recent Motor Show. Two of the…

Scan008 Performance review and analysis of a 20 HP Sunbeam car.
View original record 20 HP. SUNBEAM CAR. GENERAL PERFORMANCE. This model is very pleasant to drive. It does not profess to be particularly silent or smooth running but in spite of this, it does everything very nicely. Its…

Scan009 Performance report on a 20 HP Lanchester car, comparing it to Rolls Royce models.
View original record 20 HP. LANCHESTER CAR. GENERAL PERFORMANCE. This is a disappointing car. The makers appear to have gained nothing in the way of power by their over-head Camshaft, and lost a good deal in the way of…

Scan010 Technical review of a demonstration car's brakes, steering, gearbox, and suspension.
View original record contd:- -2- BRAKES. These brakes are not as nice to operate nor so efficient as those of the 20 HP. Sunbeam, though they are controlled by foot pressure in the same way. It requires quite an effort to…

Scan011 Performance comparison test report between a 20 HP Sunbeam car and a 20 HP RR car.
View original record X. 446 To R. from Hs. c. to CJ. BJ. c. to PN. WOR. Hs3/LG12.6.24. 20 HP. SUNBEAM CAR - X.446. I had an opportunity of testing a new 20 HP. Sunbeam car. It had only been delivered from the makers about…

Scan012 Vehicle performance, detailing brake stroke, engine noise, and gear ratios.
View original record -2- wrapping front brakes. The stroke on the brake pedal was 5½" to 6". When the brakes were put on hard, the pedal went right down to the floorboards - even with that pressure it was impossible to…

Scan013 Effectiveness and design of the 20 HP Sunbeam's four-wheel braking system.
View original record Y446 PNS/DN/13.6.24. TO Hs. FROM PN. With reference to your report (Hs3/LG12.6.24) on the 20 HP Sunbeam car, am I right in assuming that the system of four wheel brakes thereon was not capable of…

Scan014 Comparing the braking systems and performance of Sunbeam, Hispano, and Bentley cars.
View original record W/S. PN. from Hs. 7446 X446 / X155 Hs3/LG17.6.24. Referring to your PN8/IN13.6.24. We think it is quite possible for the Sunbeam Brakes to be adjusted so that they can lock all four wheels equally by…

Scan015 The steering performance of a 20 HP Sunbeam car, noting steering wobble and design.
View original record H.R. 433a (50 M) (O.D. 21. 15-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 446 REF: Hs1/LG16.5.25. To R from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. 20 HP. SUNBEAM. 1457 X446 STEERING.…

Scan016 Confidential memo discussing worm and nut steering systems, referencing a quotation from Autocar about Sunbeam's progress.
View original record 4446 To Hs. from R. c. to CJ. BJ. c. to Wor. LHS. c. to BY. EP. c. to PN. CWB. CONFIDENTIAL. R1/M.7.25. RE. STEERING. X. 8430 X. 446 Further to our remarks on steering contained in R2/M29.6.25., the…

Scan017 Report comparing different steering systems, their flaws, and outlining plans for a new design attempt.
View original record contd :- -2- wheel and the road wheels to reduce the shocks. This constitutes the lightest steering possible, but (as we have experienced) in the Hispano and our own car,it is not absolutely decided,…

Scan018 Troublesome car purchased in Chichester, suspected to have a broken crankshaft.
View original record contd :- -3- purchased at Chichester - in place of a 20 HP. RR. - and known to our staff, has given much trouble to the owner, who regrets his purchase, the last word we have of it being that it was…

Scan019 Test report on a 20/60 HP Sunbeam, comparing its performance to a Rolls-Royce 20 HP model.
View original record S/W (HS) f446 c. to Hs. PN. Bt. BJ. CWB21/LH27.8.25. 20/60 H.P. SUNBEAM. Through the kindness of the owner - G.R.Skinner, Esq., I was able to give one of these cars a pretty thorough test yesterday…

Scan020 Report comparing the steering of a 3-Litre Sunbeam car to a Phantom chassis, analysing the effects of front axle weight and suspension.
View original record W/S. To Bt. from Hs/Rm. c. to BJ. c. to CMB. c. to FN. A E DaWOR X446 Hs/Rml/LG27.4.26. 3-LITRE SUNBEAM CAR. X8430 BT3/GN26.3.26. With reference to the very interesting report on the steering of this…

Scan021 Comparing Sunbeam and Panhard steering with their own, using an example of a Phantom car's performance.
View original record To R. from Hs. c. to BJ. E. c. to DA. EY. c. to PN. Wor. X446 Hs2/LG19.5.26. STEERING. X8430 X1052 With reference to the suggestion of testing Sunbeam and Panhard steerings. As regards the Sunbeam.…

Scan022 Internal memorandum discussing the causes of poor high-speed steering control in certain models, attributing the issue to suspension rather than steering.
View original record HIGH SPEED STEERING CONTROL. Both R-R models have recently been severely criticised with regard to the way in which they behave at high speeds when compared with cars such as the Sports Sunbeam and…

Scan023 Suspension tests and steering control, comparing a Hispano model to the Phantom.
View original record contd :- -2- pedestrian crossing the road. Repeat the test with no damping. In the second case the steering will feel quite uncontrollable but the fault will be in the rear of the car. Our suspension…

Scan024 Loan of a Chrysler car to Capt. Forsyth and repairs to a Sunbeam.
View original record To Fy. from Hs. c. to RG. Wor. Y446 Hs1/LC28.5.39. x4012 We can arrange to let Capt. Forsyth have the Chrysler car for the last two weeks in June. We should like to know from you the day that he will…

Scan025 The performance and technical specifications of a Voisin car following its Paris-Nice journey.
View original record NICE DÉPOT X 4370 RECEIVED 20 OCT 1921 X4370 Re performance of the Voisin car Paris-Nice. BJ. Pa2/N15421. Copy Hs. I had an opportunity of talking to Mr Lumberjack and to examine the Voisin car the…

Scan026 Vehicle performance, noting design weaknesses and criticising driver behaviour during a demonstration.
View original record NICE DÉPÔT RECEIVED Re Velsen Performance contd. (2). BJ. Pag/N15421. (clear) of the drivers head. copy Hs. The supplementary petrol tank was also streamlined together with the tail of the seats, the…

Scan027 Test drive and discussions concerning Sir Denistoun-Burney's car.
View original record 4484 To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to By. Hs.3/WJ.7.12.31. SIR DENISTOUN-BURNEY'S CAR. Since writing the last report, Sir Denistoun Burney has visited Derby and brought with him one of…

Scan028 Test drive report and brief description of Sir Dennistoun-Burney's Streamlined Car.
View original record R. From Hs. c. to SE. Wor. c. to Da. Ty. c. to ?. 84484 SIR DENNISTOUN-BURNEY'S STREAMLINED CAR. FN. and myself tried one of these cars last Friday. We went from London to Maidenhead and back. A brief…

Scan029 Report evaluating the design, performance, and commercial potential of a car by Sir Denistoun Burney.
View original record (2) One of the troubles they have had is with the cooling and on the later cars they have a conventional radiator at the front of the car besides the radiators at the rear. The radiator in front also…

Scan030 Telegram from Elliott to Hives cancelling a request for the Burney car.
View original record POST OFFICE TELEGRAPHS. X4484. 14. CONFIRMATION. Stamp: DERBY * 8 DE 31. Time of Receipt: 9-54 M. Origin: 15 9.37 WEST WITTERING CHA 11. To: HIVE'S ROYCAR DERBY =. Message: BURNEY CAR NOT WANTED WILL…

Scan031 Telegram received by telephone from Elliot regarding the Burney car.
View original record RR 144A (12 Pds) IDJ 251 27-8-3...M 6/4784 Phoned to s 9.55 am by R.A.L. H x4484. ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. Time Received: 9-50 Date: 8.12.31 To: Roycar Hives By: Rb from: West…

Scan032 Letter to Sir Denistoune Burney regarding shared information, a visit to the Works, and a planned trip to General Motors in the US.
View original record X4484. Expl. Dept. Hs.3/MJ. December 12th.1931. Sir Denistoune Burney, Broadway Court, 8, Broadway, Westminster. Dear Sir Denistoune Burney, Very many thanks for your letter of the 11th.inst. I will…

Scan033 Letter from Streamline Cars, Ltd. enclosing a draft paper on car design for review and comment.
View original record Works CORDWALLIS WORKS, MAIDENHEAD, BERKS. TELEPHONE: MAIDENHEAD 947. TELEGRAMS: STREAMLINE, MAIDENHEAD. London Office TELEPHONES { VICTORIA 6900 (EXT. 92) TELEGRAMS: STREAMLINE, SOWEST, LONDON…

Scan034 Page two of a letter regarding a decision and further tests on a Pullman car.
View original record 2. I should also like to know whether the decision which was come to in London yesterday precludes my bringing up the Pullman car, after Christmas, for a further series of tests. Yours sincerely,…

Scan035 Paper on the revolution in automobile design, focusing on aerodynamics and lighter engines inspired by new roads and aviation.
View original record AUTOMOBILE DESIGN REVOLUTIONISED REASONS, METHODS AND RESULTS. .................. I feel a considerable diffidence in addressing such an expert and authorative body of automobile engineers as are here…

Scan036 The future re-orientation of car design, focusing on aerodynamics and chassis improvements for high-speed cruising.
View original record 2. weight per horse power of the internal combustion engine imposed upon automobile engineers conditions that led them, quite rightly,to the development of what we now accept as the orthodox car, so…

Scan037 Page discussing the aerodynamic design of a car, its practical disadvantages, and general principles for reducing air resistance.
View original record 3. consumption from 13.8 m.p.g. to 22. 5 at an average speed of 32 m.p.h., and in addition, obtained the expected results of better ventilation, less draught for the passengers, less noise and better…

Scan038 The design principles for a streamlined car body, focusing on passenger space, aerodynamics, and driver safety.
View original record 4. is to obtain maximum passenger space between the axles, combined with a minimum overall length in a car limited by these over-riding conditions. The first deduction is that a tapering tail…

Scan039 Page discussing car design principles related to weight distribution, handling, and safety.
View original record 5. in the resistance co-efficient. The main variations possible being at the front end as this can be made in bonnet form or entirely sloping. Having, therefor, the rough outline of the car as…

Scan040 Analysis of vehicle dynamics during braking, focusing on weight distribution and wheel adhesion.
View original record 6. under these particularly onerous conditions in which failure may be followed by the direct consequences that the loads on front and rear wheels should be equal to give maximum power of adhesion.…

Scan041 Page discussing the distribution of weight and the physics of a rigid body, focusing on the centre of percussion and rotation.
View original record 7. of the centre of gravity from the point of view of minimum deviation is about one third of the length of the wheelbase in front of the rear wheels. The third condition in which I believe…

Scan042 Technical discussion on vehicle weight distribution, radius of gyration, and suspension behaviour over uneven surfaces.
View original record 8. Now my contention is that in a modern car the weight should be so distributed along its length that if A and B are the distances of front and rear axles from centre of gravity and K is the radius…

Scan043 Technical analysis of vehicle springing, weight distribution, and cornering dynamics.
View original record 9. which in turn react on the rear wheels. If the stiffness of the springing is known the time for this sequence of operations is readily calculated. I find that for an average car with normal…

Scan044 Page discussing the physics of car handling, focusing on lateral forces, skidding, and stability during turns.
View original record 10. usually assumed, the limiting lateral force at which side slip occurs is proportional to the applied weight on the wheel there will obviously be a maximum curvature of path round which a car can…

Scan045 Vehicle dynamics concerning sideslip, weight distribution, and proposed design improvements.
View original record 11. sideslip or tail swing. If, however, the distribution of weight had been such that K^2 = AB then no additional lateral force would occur in the plane of the rear wheels on turning into the…

Scan046 The merits of rear-engined car design versus front-wheel drive, focusing on weight distribution and performance.
View original record 12. from orthodox design. The condition governing the position of the centre of gravity can only be met by transferring the position of the largest individual weight, that of the engine to behind the…

Scan047 Summary of the advantages gained by placing the engine behind the back axle.
View original record 13. At the commencement of my address I stated that there were two distinct problems, the first of which was a drastic reduction of air resistance and the second a revolutionary re-design of chassis…

Scan048 List of ten design features and improvements incorporated into a series of eleven cars over a three-year period.
View original record 14. I have now defined the limits within which the car designer must, I think, operate as these limits are defined on the one hand by aerodynamic laws, and on the other by the laws of motion and are…

Scan049 The evolution of a dual radiator system for engine cooling and passenger compartment heating.
View original record 16. provide adequate warmth in the driver's compartment during cold weather. Exhaust heating was tried, and whilst effective in the rear compartment, was not adequate for the driver's compartment.…

Scan050 Experiments with engine, transmission, and cooling system designs.
View original record 13. As regards engine and transmission, the three types actually tried are shown in Figs.......................... and as can be seen have resulted in a successive moving forward to reduce the…

Scan051 Engine cooling systems, body design, and spare wheel stowage.
View original record 17. allowing the clean warm air to escape into it by means of controlled louvres. 3. The engine fan scavenges the engine compartment and keeps the system cool when the car is idling or in traffic. 4.…

Scan052 Vehicle body design, including spare wheel location, door construction, and mudguard aerodynamics.
View original record 15. would seem to be only two places, one is under the front bonnet, and the other is in the doors. The door position has been used in all cars subsequent to No.1, and once the actual construction of…

Scan053 Car body design evolution, focusing on cornering, wings, footboards, and lamp positioning.
View original record 19. of the car in cornering and, at the same time, facilitates the provision of a very large angle of lock in the region of 50°. There is yet another solution that has been adopted by one or two…

Scan054 Typed report on the evolution of car design, discussing various models and the safety aspects of front-engine placement.
View original record 20. in a drastic fashion, and the first step was to remove the spare wheel stowage away from the bonnet so as to give a greater latitude in design. Two designs were put in hand in Figs..... and…

Scan055 Analysis of crash safety concerning retardation rates, crumple zones, and the advantages of rear-engined vehicles.
View original record 21. The important consideration is, of course, the rate of retardation. If the retardation of the car is so severe that the passengers are shot forward off their seats, through the windscreen, it is…

Scan056 The superiority of a new car design and the strategic opportunity it presents in the automotive market.
View original record 22. reasons have been advanced to show that it is superior to the orthodox car in its fundamental characteristics in practically every particular. The cars so far built have not, of course, the same…

Scan057 Letter from Streamline Cars, Ltd. regarding criticisms of a draft, trials of their No.8 car, and a planned trip to the New York Motor Show.
View original record X4484. Works COROWALLIS' WORKS, MAIDENHEAD, BERKS. TELEPHONE: MAIDENHEAD 947. TELEGRAMS: STREAMLINE, MAIDENHEAD. London Office TELEPHONES: VICTORIA 6900 (EXT. 92) TELEGRAMS: STREAMLINE, SOWEST, LONDON…

Scan058 The concluding page of a letter discussing a trial to be carried out in Derby.
View original record 2. I am somewhat doubtful whether I can come up to Derby before I leave, but if it is possible to do so I am most anxious to carry out the trial just before leaving, so that my figures may be…

Scan059 Continued friendly interest in the Burney Car and a paper for the American Automobile Engineers.
View original record S/W To Hs. from Sg. re Burney Car. Sg3/E15.12.31 Copy to Wor. Thanks for Hs.4/MA.14.12.31. When you have finished with the paper which he is to read before the American Automobile Engineers I should…

Scan060 Sir Denistoune-Burney's paper on the advantages of the Burney car and the company's subsequent interest.
View original record To Sg. From HS. c. to WoR. 84484 HS.4/MA.14.12.31. BURNEY CAR. Sir Denistoune-Burney has sent me a copy of a paper he has to read before the American Automobile Engineers on the advantages of the…

Scan061 Letter to Sir Dennis Burney discussing the steering, silencing, and suspension of streamlined cars.
View original record Hs/Rm.2/AD. December 16th, 1931. Sir Dennis Burney, Bart. Broadway Court, 8, Broadway, Westminster. Dear Sir Dennis, Thank you for your letter of the 14th. Hives is away at present but I have read…

Scan062 Letter discussing weight distribution, aerodynamics, and travel arrangements.
View original record Hs/Rm.1/ADL6.12.31 contd. -2- We do not quite follow your anxiety to get the weight equally distributed between the front and rear wheels when braking as we have never found any disadvantage in having…

Scan063 Letter from Streamline Cars, Ltd. discussing braking, weight distribution, and stability at speed.
View original record Works: CORNWALLIS WORKS, MAIDENHEAD, BERKS. TELEPHONE: MAIDENHEAD 947. TELEGRAMS: STREAMLINE, MAIDENHEAD. London Office TELEPHONES: VICTORIA 6900 (EXT. 92) TELEGRAMS: STREAMLINE, SOWEST, LONDON…

Scan064 Letter discussing the potential addition of a fin to a car's tail area.
View original record 2. consider increasing the tail area of the car in the form of a fin, but I think it will be some time before we have to consider this. Again, with many thanks for your criticisms. Yours sincerely,…

Scan065 Circulating Sir Dennis Burney's paper on the streamlined car.
View original record To Sg. From Hs. Hs.6/MJ.18.12.31. Attached herewith is a copy of Sir Dennis Burney's paper on the streamlined car. I should like you to let me have it back after you have read it because I think both…

Scan066 Letter to Sir Dennis Burney regarding travel plans to Detroit and a referral to engineer W. Parsons.
View original record Hs/Rm.3/AD. December 21st, 1931. Sir Dennis Burney, Bart. Broadway Court, 8, Broadway, Westminster, S.W.1. Dear Sir Dennis, Many thanks for your letter of the 17th inst. Unfortunately, we cannot get…

Scan067 Potential association with Sir Dennis Burney regarding his streamlined car.
View original record To Hs. from Sg. re the Burney Car. Sg9/E22.12.31 I am in receipt of Hs.6/MJ.18.12.31. Thank you for sending me Sir Dennis Burney's paper on the streamlined car which I have read and return herewith.…

Scan068 Letter from Streamline Cars, Ltd. discussing potential manufacturing arrangements, a lecture in Detroit, and travel plans.
View original record Works CORDWALLIS WORKS, MAIDENHEAD, BERKS. TELEPHONE: MAIDENHEAD 947. TELEGRAMS: STREAMLINE, MAIDENHEAD. London Office TELEPHONES: VICTORIA 6900 (EXT. 92) TELEGRAMS: STREAMLINE, SOWEST, LONDON…

Scan069 Relaying a message from Burney regarding a meeting with Mr. W. Parsons about manufacturing arrangements.
View original record 84484 Ps. from Hs/Rm. Hs/Rm.3/AD29.12.31. Dear Ps, I wrote to Burney as I said I would and he replied as follows :- "Many thanks for your letter of the 21st December. I should be very glad to see…

Scan070 Cover note for an enclosed report on the Burney car.
View original record X4484. Da. from Hs. Hs.3/AD31.12.31. Enclosed herewith is a report on the Burney car which we think will interest you. Please return it when you have finished with it. Hs.

Scan071 Trial of Sir Dennistoun Burney's car, detailing its performance and design features.
View original record c. Hs. Rg. Ev. From E. X4484. E.2/AD6.1.32. SIR DENNISTOUN BURNEY'S CAR. On Sunday last I had lunch with Sir Dennistoun Burney at Chichester and afterwards made a trial of his latest production which…

Scan072 Continued assessment of the Burney car's design features, comparing them to conventional car capabilities.
View original record E.2/ADS.1.32 contd. -2- The accessibility of the engine is an improvement over what we have now and there appears to be no objection to the transmission layout provided the clutch and flywheel be not…

Scan073 Returning a description and photographs of the Burney car, expressing interest in the design's future.
View original record HS. FROM DA. c/f 84 [handwritten] DA1/M19.1.32. re. BURNEY CAR. I return herewith description and photographs of the Burney car. Thank you very much for sending them to us. We are very interested, and…

Scan074 Treatise on independent springing and its potential benefits for chassis design.
View original record SG. FROM E. Copy to HS. x4484. E1/M23.1.32. X.4484 Referring to your memo SG29/E19132., please find attached the treatise in question. We are interested to note that the author expresses views which…

Scan075 From Sg. to Hs. requesting a report on the Burney Car for a meeting the next day.
View original record Y4484. To Hs. from Sg. re Burney Car. Sg13/E26.4.32 Copy to Wor Burney is back from America and has been on the telephone again wanting to see me. He still of course wants to get us interested in this…

Scan076 Magazine article detailing the history, design, and specifications of the unconventional Burney Streamline car.
View original record VETERAN TO CLASSIC The Burney Streamline in prototype form with its recessed headlamps and straight-eight Beverley-Barnes engine. Forgotten Makes: The Burney Streamline When it made its debut late in…

Scan077 Magazine article from 'Motor Sport' detailing the history of the Burney Streamline car.
View original record VETERAN TO CLASSIC very short prop-shaft and a differential to the road-wheel drive-shafts. Not only was the overall specification quite startling to those accustomed to normal front-engined cars but…

Scan078 Page from 'Motor Sport' magazine featuring articles on historical cars and motoring events.
View original record VETERAN TO CLASSIC axle. Although no shock-absorbers were fitted and Burney said no work had yet been done on the springing, the ride was "very good", with no pitching or rolling. The overall length,…

Scan081 The reverse side of a press photograph with an agency stamp and handwritten reference number.
View original record H7811 PHOTO BY THE "TOPICAL" PRESS AGENCY LTD. 10 & 11, RED LION COURT, FLEET STREET, LONDON, E.C.4.

Scan083 The reverse side of a photograph with a press agency stamp and handwritten reference number.
View original record RECEIVED DEC 13 1918 H7812 PHOTO BY THE "TOPICAL" PRESS AGENCY LTD, 10 & 11, RED LION COURT, FLEET STREET. LONDON, E.C. 4.

Scan084 Black and white photograph showing a profile view of a streamlined saloon car parked on a street.
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Scan085 Photograph of a streamlined saloon with a large rear boot, rear three-quarter view.
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