Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Letter discussing a performance curve for a 1927 La Salle Sedan compared to the Phantom and 20 HP models. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. OY2.R.12.20.27 December 20th, 1927. Mr. E.W. Hives, Rolls Royce Ltd., Derby, England. Dear Mr. Hives: CONFIDENTIAL RE FOREIGN CARS 1927 LA SALLE… | ||
| Scan002 | Short memo requesting particulars for the purchase of a La Salle car, under the subject of private flying and small aero engines. | ||
| View original record | S/W Hs. Cl/C3.7.29 Private Flying - Small Aero Engine I understand R. want us to purchase a La Salle car and that you will let us have particulars. Will you please let me know what is required. C. | ||
| Scan003 | Purchase of a La Salle car to inspect its engine and transmission components. | ||
| View original record | HS. FROM R. C. to SG. LA SALLE ENGINE. An up-to-date La Salle car means one equipped with Synchro-mesh change gear. You should be able to purchase at about £700 or £800 a saloon car like the one shewn… | ||
| Scan004 | Obtaining a LaSalle car with a synchro mesh gearbox for a test drive in London. | ||
| View original record | To C. from Hs. We attach herewith illustration of the La Salle car which R. wishes us to obtain. The essential features are that it should have the latest type gearbox which has the synchro mesh type… | ||
| Scan005 | Arranging a trial for a green La Salle saloon car available through Messrs. Barker. | ||
| View original record | S/W Hs. Re LA SALLE CAR. We have an option on a La Salle car with saloon body, no division, painted green, through Messrs.Barker. al They have arranged for a provision/trial on Monday (15th). Will you… | ||
| Scan006 | Arranging a trial run for the La Salle car. | ||
| View original record | S/W Hs. C1/C13.7.29 RE THE LA SALLE CAR. With reference to the conversation on the telephone this morning, we have arranged for you to have a trial run on this car at 2.30 on Wednesday afternoon next.… | ||
| Scan007 | Rescheduling the trial of a La Salle car due to a conflicting Air Ministry meeting. | ||
| View original record | To C. from Hs. Hs.6/MJ.17.7.29. TRIAL OF LA SALLE. ----------------- I am very sorry that I shall not be able to try the above car on Thursday as arranged. The Air Ministry officials have altered… | ||
| Scan008 | Test report on a La Salle car's performance, handling, and engine characteristics. | ||
| View original record | To R. From Hs/Rm. c. to EG. c. to DA. c. to Wor. Filing Hs/Rm2/MJ. 22. 7. 28. X3531. LA SALLE. ---------- We tried this car round London. As a car it was most uncomfortable to handle. The steering was… | ||
| Scan009 | Comparative analysis and road test report on La Salle, Cadillac, and Lincoln vehicles. | ||
| View original record | -2- ratio given as 4.9 - 1. Very small wheels. Dia. given as 30.5". Engine power falls off very rapidly with speed. Engine appears to be woolley. Noise. The engine has a most obtrusive roar under… | ||
| Scan010 | Evaluation of a La Salle synchro-mesh gearbox, comparing its performance to Graham Paige and Mathis models. | ||
| View original record | reputation superior to the other two and shoul be further developed. LINCOLN ROLLS-ROYCE REPORT ON 22 JUL 1932 The La Salle was fitted with Synchro Mesh gearbox. While it was fairly easy to get from… | ||
| Scan011 | Horsepower diagram from tests on a 1927 La Salle Sedan, detailing engine performance and power requirements under various conditions. | ||
| View original record | HORSEPOWER DIAGRAM - 1927 LA SALLE SEDAN (L.E.C) FROM TESTS MADE AT MASON LAB. YALE UNIV. NEW HAVEN. CONN. Nov. 1927 SER No.373 8 CYL V-TYPE ENGINE, 3/8 x 4 15/16 DISPL. 303 CU-IN. GEAR RATIO 4.54.… | ||
| Scan012 | Requesting a trial of Cadillac and Lincoln chassis following a report on the La Salle. | ||
| View original record | Hs/RM. from E. C. to Sg. LA SALLE E1/M22.7.29. Further to your report on the La Salle R. says he would now like to try the Cadillac and Lincoln if possible, to see if these two chassis are superior,… | ||
| Scan013 | Purchase of a La Salle car to test its synchro-mesh gearbox, with comparisons to Cadillac, Lincoln and Graham-Paige. | ||
| View original record | S/W Hs To H. from Sg. c. to HS. c. to E. c. to G. Sg15/D23.7.29. Re: La Salle. Referring to E1/M22.7.29, I understand that although arrangements had been made for the La Salle Car to be purchased it… | ||
| Scan014 | La Salle car's engine and the development of a new engine for naval and aviation applications. | ||
| View original record | Sg. from E. c. Hs. R2/M26.7.29. RE . LA SALLE. We have decided that this car is not of any value to us for educational purposes except the engine, and it is hardly worth buying it for the engine only,… | ||
| Scan015 | Potential purchase of a Graham-Paige car in place of a La Salle. | ||
| View original record | S/W. To Hs. from Sg. Hs Sg2/D29.7.29. re La Salle Car. Referring to Sg15/D23.7.29, you will have received a copy of R2/M26.7.29, and whilst the information given in regard to aero engine is very… | ||
| Scan016 | Requesting a reply regarding the purchase of a replacement for the La Salle car and an inquiry about the Graham-Paige. | ||
| View original record | 13531 To Hs. from Sg. re La Salle Car. Sg1/E16.8.29 Would you kindly let me have a reply to my Sg2/D29.7.29 in regard to what car, if any, is to be purchased in place of the La Salle, and whether you… | ||
| Scan017 | Arranging a viewing of a new La Salle and a trial run of a new Daimler. | ||
| View original record | TO HS/RM FROM EV. EV8/3.5.34. RE THE NEW LA SALLE. I have just heard that the New La Salle will not be in London until the 14th. of this month. I have arranged to see it as soon as it arrives. If I… | ||
| Scan018 | Steering performance with controllable dampers and comparing a La Salle steering box to a worm and nut system. | ||
| View original record | COPY. 4708 To E. c. to Wor. c. to Da. Hs/Rm.7/KW.11.6.34. Rolls-Royce Steering. There is no doubt that with the controllable dampers in the lightest position the steering of 40/50 and 20/25 is… | ||
| Scan019 | The mechanical efficiency of a La Salle steering box under static conditions. | ||
| View original record | COPY. 11.6.34. Mechanical Efficiency of La Salle Steering Box. The table below shows the efficiency of the La Salle steering box measured in forward and reverse drive under static conditions. The… | ||
| Scan020 | Dimensions for an American straight-eight crankshaft, specifically a Pontiac model. | ||
| View original record | X6708 E. From Hs/Rm. Hs/Rm.9/MA.8.10.34. AMERICAN STRAIGHT-EIGHT CRANKSHAFT. Here is a blueprint of the Pontiac crankshaft. I should not take this as being a particularly good sample. A more… | ||
| Scan021 | Cable received with the helix angle for Cadillac steering and comparing it to the LaSalle steering on the Spectre model. | ||
| View original record | X4708 To E. c. to Wor. c. to Da. c. to Ry. Hs/Hm.4/KW.22.11.34. We have just received the following cable from Olley in response to our telegram asking him for details of the Helix angle on the… | ||
| Scan022 | List comparing the weights of different dynamo models. | ||
| View original record | 44708 DYNAMO WEIGHTS. Present standard Bentley 30 lbs. 8 ozs. Small 20/25 type with fan ventilation 23 lbs. 6 ozs. La Salle (same size as 20/25) 24 lbs.12 ozs. | ||
| Scan023 | Letter from Cadillac Motor Car Company discussing transmission gear design for silence. | ||
| View original record | X4708 COPY CADILLAC MOTOR CAR COMPANY, DETROIT, MICHIGAN. April 17th,1935. Mr. W.A. Robotham, Rolls-Royce Ltd., Derby, England. Dear Rn., In reply to your question about our transmission gears, here… | ||
| Scan024 | From Cadillac Motor Car Company detailing the processing of LaSalle transmission gears. | ||
| View original record | COPY. CADILLAC MOTOR CAR COMPANY. To: Mr. M. Olley. From: E.R. Nyland. Subject: Processing LaSalle Transmission Gears. All gears are hobbed in one cut except 15 tooth counter gear which is a double… | ||
| Scan025 | The effectiveness of the 'Inco Lapping System' and experiments with a 'Michigan Tool Co's Gear Lapping Machine' for LaSalle gears. | ||
| View original record | -2- The "Inco Lapping System" is not as satisfactory as hoped for when put in use on LaSalle gears. This, however, I believe is largely due to narrow tooth faces. Our Methods Engineers are now… | ||
| Scan026 | Letter from Cadillac Motor Car Company detailing their production methods for making transmission gears. | ||
| View original record | COPY. CADILLAC MOTOR CAR COMPANY, APRIL 2nd, 1935. To: Mr. E.W. Seaholm, From: E.R. Ryland, Subject: Mr. W.A. Robotham's letter to M.Olley, March 6, 1935. In order to fully answer Mr. Robotham's… | ||
| Scan027 | Gear tooth lapping operations, interference, and contact, with a comparison to Cadillac and LaSalle transmissions. | ||
| View original record | -2- This operation due to the greater sliding action above and below the pitch line of the gears causes the bearing of the teeth to come down on the driving teeth and up on the driven teeth. In other… | ||
| Scan028 | Exploded view diagram of a gearbox showing gear tooth contact specifications. | ||
| View original record | NOTE - ALL MAIN SHAFT HELICAL GEAR TEETH TO BE LEANED IN THE DIRECTION TO FAVOR CONTACT SHOWN REGARDLESS OF DRAWING SPECIFICATIONS. THE REVERSE IDLER ALSO TO HAVE MODIFIED PRESSURE ANGLES TO PRODUCE… | ||
| Scan029 | Official order for supercharger parts for a Graham-Paige vehicle. | ||
| View original record | To Roy. x1076 Hs/Smth.4/KW.21.5.35; Order No. 54322. Graham-Paige. Will you please pass an official order to Cleverleys Ltd, 32, St. Mary Abbot's Terrace, London, W.14, for the following supercharger… | ||
| Scan030 | Preliminary results of Joggle Tests on the 30-EX chassis. | ||
| View original record | FILE. X1076 18.11.35. Joggle Tests on 30-EX. results - Preliminary tests give the following At Kegworth. 40 m.p.h. by speedometer. Original R.R. Marles gear as previously fitted, 3.57 turns. LaSalle… | ||
| Scan031 | Report comparing a 15 HP Lorraine-Dietrich car to the Goshawk 11, detailing its omissions and faults. | ||
| View original record | X3588 CJ. from R. c. to Wor. c. to Hs. c. to EP. c. to Da. c. to BY. R6/G23.11.21. X.3588 - RE 15. H.P. LORRAINE-DIETRICH X.4219 This is a car comparable in size with our Goshawk 11. Though called 15… | ||
| Scan032 | Recommending the purchase of a 20 HP Lorraine car for competitive analysis and comparison. | ||
| View original record | X.3588 To B.J. from R. c. to Hs. R3/M13.8.26. 20 HP. LORRAINE. I think we ought to have one of these cars as they did so well in the recent Endurance Race in France. There are many things about it… | ||
| Scan033 | Ascertaining the price to obtain a 20 HP Lorraine car. | ||
| View original record | Hs. X3588 To R. from BJ. c. to Hs. My dear R., 20 HP. Lorraine. With reference to R3/M.13.8.26, we are immediately writing to Paris to ascertain at what price we can obtain one of these cars. I think… | ||
| Scan034 | Recommendation to test a special 20 HP Lorraine car before purchase. | ||
| View original record | X3588 To BJ. from Hs. c. to Wor. Hs3/LG19. 8. 26. 20 HP. LORRAINE CAR. We recommend that before this car is purchased it should be tried by someone from the Experimental Dept. Rm. will be in France… | ||
| Scan035 | Potential purchase and trial of a 20 HP Lorraine car. | ||
| View original record | To HK....from BJ. ->(c. to Hs.) X3588 BJ5/C23.8.26. Re 20 h.p. Lorraine Car. ------ Further to C7/C18.8.26, I have just received the following memo. from Hs:- "We recommend that before this car is… | ||
| Scan036 | Arranging a trial run for a 20 HP Lorraine car. | ||
| View original record | 13588 HK - Paris. from Hs/Rm. Hs/Rml/LG25.8.26. 20 HP. LORRAINE CAR. BJ5/C23.8.26. I shall be at the Hotel de France, Chateauroux from Friday next for about a week. If you are able to fix up a trial… | ||
| Scan037 | Arrangement of a chassis trial for a 20-HP Lorraine car. | ||
| View original record | "BJ" London copy "Hs" Derby V3588 Ps1/JP.31/8/26 RE 20-HP "LORRAINE" Car. Your C7/C16/8/26 and BJ5/C23/8/26 to hand. "Hs" has written asking us to arrange for "Rm" to try the chassis before we obtain… | ||
| Scan038 | The potential purchase of a 20 HP 'Lorraine' Car and temporary importation logistics. | ||
| View original record | V3588 S/W ✓ (Copy to Hs). Sc17/RM/2.9.26. Re: 20 HP. "Lorraine" Car. Thanks for Psl/JP/31.8.26. E.J. has asked us to reply and say that we presume it is clear that you would not buy the Lorraine Car… | ||
| Scan039 | From France about transporting parts back to Derby for tests and travel arrangements. | ||
| View original record | Chateauroux. Indre. France. Rm.I/Crn.5.9.26. X3588 To: "Hs" From: "Rm". Lytton & Greatorex will be crossing over on the Monday night boat from Le Havre. I am endeavouring to get the vertical pivot… | ||
| Scan040 | The decision on purchasing a 20 HP Lorraine car after testing. | ||
| View original record | To R. from Hs. c. to BJ. X 5588 Hs1/LG10.9.26. 20 HP. LORRAINE CAR. The purchase of this car was held over until after Hs/Rn. had tested one. Will R. please say whether it is still his wish that the… | ||
| Scan041 | Test report on the 6-cylinder Lorraine car that competed in the 24 Hours of Le Mans. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to E. DA. c. to BY. X3588 Hs/Rm2/LG10.9.26. 24 HRS. LE MANS - LORRAINE CAR. 6 cyl. Dual battery ignition. 75 X 130 (3447 c.c.) Canti-lever rear springs. The test of… | ||
| Scan042 | Road test report detailing the performance of a car's engine, clutch, brakes, steering, and suspension. | ||
| View original record | contd :- -2- There was no definite period up to 80 m.p.h., although as one would expect the engine was somewhat rough throughout the whole range. The main feature of the engine was its extraordinary… | ||
| Scan043 | Summary report on a single-purpose car, critiquing its high-speed control and praising its engine. | ||
| View original record | contd :- -3- when the brakes were applied. The whole suspension gave one the impression that it contributed to the poor steering of the car at high speeds. SUMMARY. This is more or less what one would… | ||
| Scan044 | The held-over purchase of a 20 HP Lorraine car. | ||
| View original record | To R. from Hs. c. to BJ. X3588 Hs1/LG10.9.26. 20 HP: LORRAINE CAR. The purchase of this car was held over until after Hs/Rn. had tested one. Will R. please say whether it is still his wish that the… | ||
| Scan045 | Interest in a 20 Hp. Lorraine Car. | ||
| View original record | X3588 To Hs. from BJ. 20 Hp. Lorraine Car. BJ2/E14/9/26 Referring to your Hs1/LG10/9/26, I enclose copy of memorandum received from Ps. on this subject, and should be glad of an early reply so that we… | ||
| Scan046 | Trial of a 'LORRAINE' 20-HP car and requesting further instructions. | ||
| View original record | COPY. 'BJ' LONDON. Ps10/JP.9/9/26 Re 'LORRAINE' Car. (20-HP) 'Rm' and myself tried one of the cars which actually took part in the 24 hours trial, and 'Rm' will probably report to you via 'Hs' his… | ||
| Scan047 | Pricing and specification for a 'Lorraine' chassis and 'Torpedo' seater. | ||
| View original record | "S" (crossed out) "Rm" Derby (Confidential Information.) X3588 Ps6/JP.24/9/26 RECEIVED 27 Sep 1926 "LORRAINE" Chassis. Herewith the Specification of the "Lorraine" as received this morning. The price… | ||
| Scan048 | Confidential memo detailing the specification and pricing for the 'Lorraine' chassis. | ||
| View original record | "Hs" "H" Derby X5588 Ps6/JP.24/9/26 (Confidential Information.) "LORRAINE" Chassis. Herewith the Specification of the "Lorraine" as received this morning. The price of the chassis is...........… | ||
| Scan049 | Letter from Société Lorraine providing a price quotation for their 15 CV Sport model chassis and car. | ||
| View original record | SOCIÉTÉ LORRAINE DES ANCIENS ÉTABLISSEMENTS DE DIETRICH & CIE DE LUNÉVILLE SOCIÉTÉ ANONYME AU CAPITAL DE 50.000.000 DE FRS ADRESSE TÉLÉGRAPHIQUE: LORDIET - PARIS TÉLÉPHONE WAGRAM 48-67 REGISTRE DU… | ||
| Scan050 | The second page of a formal letter written in French, ending with a salutation and a signature. | ||
| View original record | - 2 - 21 Septembre 1926. vous plairait de nous demander et, dans l'espoir que vous voudrez bien nous favoriser de votre ordre, à l'exécution duquel nous apporterions nos meilleurs soins, nous vous… | ||
| Scan051 | Specification sheet in French for the 15 RV 6-cylinder sports model chassis, '24-hour world road record' type. | ||
| View original record | CHASSIS 15 RV 6 CYLINDRES, MODELE SPORT Type " Record du Monde des 24 heures sur route ". Code Lorraine ZAERF. MOTEUR: Bloc moteur: 6 cylindres en ligne, monobloc, à grand rendement. Alésage 75 m/m;… | ||
| Scan052 | Specification sheet in French detailing vehicle dimensions, steering, and accessories. | ||
| View original record | - 2 - ressorts semi-elliptiques à l'avant et cantilever obliques à l'arrière; amortisseurs avant et arrière; DIRECTION : A gauche irréversible, modèle breveté du type à vis et écrou baignant dans… | ||
| Scan053 | Quotation received from the Paris Depot for a Lorraine chassis and a 4-seater Torpedo. | ||
| View original record | K3588 S/W Hs. C2/C27.9.26. We have received a quotation from the Paris Depot for a Lorraine chassis at............Fcs.80,000. Torpedo. 4-seater....................." 103,000. less 10%. Will you please… | ||
| Scan054 | Agreeing to obtain a Lorraine Dietrich car fitted with a body. | ||
| View original record | To C. from Hs. X3578 Hs1/LG30.9.26. LORRAINE DIETRICH CAR. It has been agreed by R. that we should obtain one of these cars. We recommend that you obtain one fitted with a body. Delivery should be… | ||
| Scan055 | Telegram regarding the acquisition of a 'winning Lorraine' car versus a new car. | ||
| View original record | POST OFFICE TELEGRAPHS CONFIRMATION X3588 No. LH Office Stamp: DERBY * OC < 26 SENT At 2.19 M To M1820 105. 11.40 LONDON R. 28 ROYCAR DERBY = HIVES PARSONS CAN SECURE ACTUAL WINNING LORRAINE DELIVERY… | ||
| Scan056 | Telegram received by telephone concerning engine and new car delivery times after a show. | ||
| View original record | RR 144A (50BKS.) (DB 214 6-25) MP 317354 Y3588 ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. F D OCT 7 1926 RECEIVED Time Received: 12-17 Date: 7-10-26 To: Rayman Shenley By: Woa from: London 11-40… | ||
| Scan057 | Purchase of a Sizaire car for research, front pivot design, and patenting a new suspension combination. | ||
| View original record | To Hs. from R. c. to BJ. 43588 R1/M8.10.26. RE. PURCHASE OF A CAR. X.3531 X.3588 X8470 X.3998 It has occurred to me that it may be preferable to have one of the Sizaire cars rather than a… | ||
| Scan058 | Outlining a planned visit to West Wittering to deliver a car and engine components. | ||
| View original record | To R. from Hs. c. BJ. Wor. c. E. Da. c. RG. X3588 Hs1/T19.10.26. RE VISIT TO WEST WITTERING. X1688 Rn. and myself propose coming to W.W. on Wednesday next unless we hear that this is inconvenient for… | ||
| Scan059 | Arrangements to collect a Lorraine Dietrich car in London and inspect another car at Barkers. | ||
| View original record | C. from Hs. X3588 Hs5/LG20.10.26. LORRAINE DIETRICH CAR. We have had a wire from Paris saying that Ps. left there with the Lorraine car on Wednesday afternoon. The arrangement made by Rm. and Ps. in… | ||
| Scan060 | Confirming an order for experimental work and testing on a Lorraine car. | ||
| View original record | X3588 To Hs from My/Rb. MY/Rb.5/FEB/55/BJ.25.10.26 c. to RHC c. to Sft c. to AHM c. to Ml (PF) c. to Ml (JI) c. to Gn c. to Mt RE: LORRAINE CAR. Hs/HP.1/BE.23.10.26. We have taken out order number… | ||
| Scan061 | Querying the performance characteristics and faults of a Lorraine Deitrich car. | ||
| View original record | X.3588 To Hs/Rn. from R. c. to BJ. E. DA. R1/M27.10.26 RE. LORRAINE DEITREICH X.3588 What are the agreed virtues and faults of this car i.e. :- (1) Is it powerful beyond what you would expect from… | ||
| Scan062 | Comparison of various competitor chassis designs and steering mechanisms following a conference. | ||
| View original record | To RG. HS. ) E. DA. ) FROM R. HS/RM. ) c. to BJ. X3588 R3/1427.10.26. CONFERENCE AT WW. ON 27.10.26 X.3588 X.2924 X.3531 RG. Hs. E. DA. & Hs/Rm. should consider my notes, and send E. to me for any… | ||
| Scan063 | Faults and performance of a competitor's 20 HP Lorraine Deitritch vehicle. | ||
| View original record | To BJ. To Hs/Rm. from R. c. to Wor. PN. Hm. c. to CWB. EP. c. to Mr. Minchin. X3588 R1/M2.11.26. 20 HP. LORRAINE DEITRITCH X.3588 X.634 I thought this might be a very definite competitor, and from… | ||
| Scan064 | Lorraine-Dietrich car and a suggestion for a Peto & Radford accumulator indicator. | ||
| View original record | To BJ. from R. c. Hs. X 3588 R2/M5.11.26. 20 HP. LORRAINE DIETRICH. Many thanks for your remarks regarding my notes on the Lorraine-Dietrich. I telephoned to Mr. Minchin and he has nowe sent his copy… | ||
| Scan065 | Preliminary test report on the 20 HP Lorraine car, focusing on its power unit and performance characteristics. | ||
| View original record | To R. from Hs/R m. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to PN. CWB. c. to PN. X3588 Hs/Rml/LG6.11.26. 20 HP. LORRAINE. With reference to Rl/M2.11.26. We have carried out some preliminary tests… | ||
| Scan066 | Analysis of engine shaft period, power curve, and a comparative acceleration test between cars. | ||
| View original record | contd :- -2- Our belief that the main shaft period is at 3800-3900 r.p.m. is strengthened by the fact that we can detect a definite, but very slight period at 1250-1300 r.p.m. or one third of the main… | ||
| Scan067 | Performance comparison between a 20 HP RR and a Lorraine car, analysing M.E.P., acceleration, and engine characteristics. | ||
| View original record | contd : - -3- CAR. WEIGHT CWTS. GEAR RATIO. ENGINE CAPACITY. 20 HP. RR. 31 4.20 3160 Lorraine. 33 3.60 3447 The M.E.P. of the high compression 20 HP. is about 8% better than standard. From the above… | ||
| Scan068 | Proposing a comparison by swapping the carburetter and induction systems between a Lorraine car and a 20 HP chassis. | ||
| View original record | To Hs. from R. c. to BJ. X3588 R8/M9.11.26. RE. LORRAINE CAR. X.3588 X.5080 X.5070 I think it would be worth while to rig up one of our 20 HP. carburetters on the Lorraine, and also the Lorraine… | ||
| Scan069 | From 'R' to 'Hs. E.' proposing to fit a Lorraine-style carburetter and induction system to the 40/50 lightweight engine. | ||
| View original record | To Hs. E. from R. X3588 R2/M11.11.26. LORRAINE AND 40/50. X.3588 X.8080 X.8230 Can we not put on our 40/50 lightweight engine a carburetter and induction system like the Lorraine - i.e. 2 triple… | ||
| Scan070 | Modifications to improve the speed and aerodynamics of the Sports Phantom model. | ||
| View original record | To D.A. From Hs/Rm. C. to Sir H.R. X35588 Hs/Rm2/LG11.11.26 SPORTS PHANTOM. X8830 X8770 With reference to R1/M9.11.26 (2). 100 M.P.H. CAR. We consider that there are a number of points on the Lorraine… | ||
| Scan071 | Competitor car design trends and features from Sunbeam, Lorraine, Lancia, and Panhard. | ||
| View original record | contd :- -2- Attached is a picture of the XX 3-litre Sunbeam shewing the importance they attach to this item. The Lorraine have also a very neat disappearing hood, and a useful type of windscreen on… | ||
| Scan072 | Distributing a blueprint sketch of a Lorraine car's combustion chamber. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X3588 Hs/Rml/LG15.11.26. LORRAINE CAR. Attached herewith is a sketch of the Combustion Chamber on the Lorraine car which we think may be of… | ||
| Scan073 | Wire from Royce to Hives arranging permission for Mr. Minchin to drive the Lorraine. | ||
| View original record | CONFIRMATION OF WIRE. X3558 HIVES. ROYCAR. DERBY. WW. 23.11.26. MR. MINCHIN VISITING DERBY TOMORROW HAVE PROMISED HIM PERMISSION TO DRIVE LORRAINE KINDLY ARRANGE THIS IF POSSIBLE. ROYCE. | ||
| Scan074 | Plan to return a Lorraine car to France for sale. | ||
| View original record | X.3588 To C. from Hs. Hsl/LG18.2.27. LORRAINE CAR. With reference to the attached letter from The Automobile Association dated the 9th.inst. We shall be returning this car to France to be sold in two… | ||
| Scan075 | The re-exportation of a Lorraine car and the required documentation for the A.A. | ||
| View original record | S/W Hs. X3588 C3/C18.2.27 Re Lorraine Car. ---- Thanks for your Hsl/LG18.2.27, contents of which we have duly noted, and conveyed to the A.A. You will note that when this car is re-exported it will be… | ||
| Scan076 | Letter from The Automobile Association regarding an International Circulation Permit and Registration Card for a motor car. | ||
| View original record | As Lorraine at works THE AUTOMOBILE ASSOCIATION, Fanum House, New Coventry Street, W.1. TA/MB/MM February 9th 1927. W.W.Parsons, Esq., C/o Messrs. The Rolls-Royce Motor Car Co.Ltd., Conduit Street,… | ||
| Scan077 | Examination of the Lorraine Dietrich crankshaft, focusing on its synchronous speed and vibration characteristics. | ||
| View original record | Y/3588 To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. Hs/ACL1/LG2.3.27. LORRAINE DIETRICH CRANKSHAFT AND SYNCHRONOUS SPEEDS. 4634 We have had the opportunity of examining the crankshaft of… | ||
| Scan078 | Experiments with the Goshawk engine's crankshaft, focusing on inertia, synchronous speed, and torsional vibrations. | ||
| View original record | contd :- -2- C.I.A No form of damper or balancer is fitted to this shaft and the camshaft and accessory drive is taken from the flywheel end, probably for that reason, although apart from the extra… | ||
| Scan079 | Graph comparing the crankshaft stiffness and torsional deflection of a 20 HP model against a Lorraine-Dietrich model. | ||
| View original record | CRANKSHAFT STIFFNESS COMPARISON. STANDARD R.R. 20 H.P. CRANKSHAFT. (SHOWN THUS: ——–) LORRAINE-DIETRICH CRANKSHAFT. (SHOWN THUS: – – – –). TORSIONAL DEFLECTION CURVES. MEASURED IN POSITION IN CRANKCASE… | ||
| Scan080 | Blank document page with a purple ink date stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 2 MAR 1927 DERBY. | ||
| Scan081 | Blueprint of a piston, connecting rod, and gudgeon pin assembly for a Lorraine Dietrich engine. | ||
| View original record | TITLE: PISTON CONN. ROD. GUDGEON PIN. ETC. LORRAINE DIETRICH X LABELS AND NOTES: LENGTH OF PISTON 2.560 SPIGOT PEENED IN POS. GUDGEON PIN RETAINERS NOT SHOWN 10 HOLES .080 DIA. ALSO 10 HOLES ABOVE… | ||
| Scan082 | Half-scale technical drawing of a Lorraine Dietrich crankshaft with various cross-sections and dimensions. | ||
| View original record | CRANK SHAFT - LORRAINE DIETRICH - SCALE 1/2 TIMING GEARS AT FLYWHEEL END CRANKSHAFT PINION SECTION AA SECTION BB SECTION CC SECTION DD SECTION EE LENGTH OF THROW - 6.5 CMS = 2.559 INS WEIGHT AS DRAWN… | ||
| Scan083 | Lorraine Dietrich car, forwarding a previous communication to France and anticipating a duty payment. | ||
| View original record | To BP. from Hs/Rn. X5588 Hs/Rn5/LG11.3.27. RE. LORRAINE DIETRICH CAR. We are sending your D/BP17/B10.3.27. to Hs. who is now in France. It will be a week before we can get a reply. We anticipate that… | ||
| Scan084 | Fitting a slipper wheel to a Lorraine Dietrich car to test torsional vibration damping. | ||
| View original record | X3588 To Hs. From Hs/Am. Hs/Am/LG11.3.27. LORRAINE DIETRICH CAR. X634 We attach a note re. the above. While we have recently been going over the question of torsional vibration dampers, we have come… | ||
| Scan085 | Lorraine Dietrich car, a Triptyque customs document, the French Automobile Club and British Customs. | ||
| View original record | Hs. X 3588 D/BP10/B28.3.27. Re; Lorraine Dietrich Car. -------- We have not received a reply to our Memo D/BP17/B10.3.27, and we are now advised that in connection with this car Ps. has discussed the… | ||
| Scan086 | Reassembly and sale of a left-hand drive Lorraine Dietrich car. | ||
| View original record | To BP. from Hs. X3588 Hsl/LG30.3.27. LORRAINE DIETRICH CAR. This car is now being put together - we have finished with it. In 3 or 4 days time it should be ready to be returned to France for sale. As… | ||
| Scan087 | The performance of a Lorraine-Dietrich engine on the test bench, with comparisons to the 20 HP and Goshawk engines. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X3588 Hs/ACL1/LG30.3.27. PERFORMANCE OF LORRAINE-DIETRICH ENGINE ON THE TEST BENCH. X5771 We have made a number of tests on the Lorraine… | ||
| Scan088 | Page 2 of a report detailing the specifications and performance characteristics of a six-cylinder engine. | ||
| View original record | contd :- -2- The engine - a six cylinder - has a bore X stroke of 2.95" X 5.125" the swept volume being 3.444 litres or 10% greater than the Goshawk. The compression ratio is rather high being 5.9 /1… | ||
| Scan089 | Analysis of the Zenith triple diffuser carburettor induction system and its performance, including a plan view diagram. | ||
| View original record | contd :- -3- but there is little reliable information available on the subject. Two horizontal Zenith triple diffuser carburetters each supplying three cylinders are used. The induction passages are… | ||
| Scan090 | Technical description of the engine's offset cylinder design and valve gear. | ||
| View original record | contd :- -4- This should result in good filling of the cylinders. OFFSET CYLINDERS. A rather unusual feature in the design of this engine is the 'off set' or 'desaxe' arrangement of the cylinders with… | ||
| Scan091 | Comparison of engine performance characteristics, including valve lift and gas velocity, between different engine models. | ||
| View original record | contd :- -5- The lift diagrams are given on prints Nos. 1 and 2 compared with the 20 HP., also another curve is inserted which shews the difference if the 20 HP. lift was as great as the Lorraine.… | ||
| Scan092 | Comparison of mechanical efficiency, friction losses, and ignition systems between Lorraine, Goshawk, and Phantom engines. | ||
| View original record | contd :- -6- mechanical efficiency curves. The overall mechanical efficiency of the Lorraine is higher than the Goshawk but actually there is little difference in the power absorbed in rotating the… | ||
| Scan093 | Engine testing, discussing ignition sensitivity, detonation, compression ratios, and combustion head design. | ||
| View original record | contd :- -7- flame travel from the points of propagation. We are not in possession of the corresponding ignition curves for the 20 HP. but are arranging to obtain these. The engine seems particularly… | ||
| Scan094 | 20 HP engine power curves, comparing compression ratios and induction pipe depression with a Lorraine engine. | ||
| View original record | contd :- -8- POWER CURVES FOR 20 HP. RR. COMPUTED FOR SAME COMPRESSION RATIO AND INDUCTION PIPE DEPRESSION AS LORRAINE. On blue print No.9. we have shewn curves calculated for the 20 HP. shewing the… | ||
| Scan095 | Engine performance analysis and summary of conclusions, comparing a Lorraine engine to a 20 HP model. | ||
| View original record | contd :- -9- crankshaft in place of the fan pulley and proved effective in damping out this vibration to the extent that it was not evident by 'feel' or sound when on the test bed. This half speed… | ||
| Scan096 | Report page discussing crankshaft performance, a comparison between Lorraine and 20 HP engines, and planned experiments. | ||
| View original record | contd :- -10- (7) The 'master period' of the crankshaft occurs at a high speed - 3800 r.p.m. - which is well outside the working speed range. It seems probable that such factors as compression ratio,… | ||
| Scan097 | Diagram comparing the exhaust valve lift of a Lorraine-Dietrich engine and a 20 HP R.R. engine. | ||
| View original record | ① LORRAINE-DIETRICH ENGINE. EXHAUST VALVE LIFT DIAGRAM. VALVE LIFT (INCHES). LORRAINE 20 H.P. R.R. THE LIGHTLY DOTTED CURVE REPRESENTS THE POSITION THE 20 H.P. R.R. WOULD ASSUME IF THE LIFT WERE AS… | ||
| Scan098 | Reverse side of a document showing a date stamp. | ||
| View original record | ROLLS-ROYCE., LIMITED PRINT ROOM, 31 MAR 1927 DERBY. | ||
| Scan099 | Blueprint diagram comparing the inlet valve lift of a Lorraine-Dietrich engine with a 20hp R.R. engine. | ||
| View original record | 2 LORRAINE-DIETRICH ENGINE INLET VALVE LIFT DIAGRAM. VALUE LIFT (INCHES) LORRAINE 20hp R.R. THE LIGHTLY DOTTED CURVE REPRESENTS THE POSITION THE 20hp R.R. WOULD ASSUME IF THE LIFT WERE AS HIGH AS THE… | ||
| Scan100 | Graph of Mechanical Efficiency and Compression Pressure curves for a Lorraine-Dietrich engine, compared with a 20 HP R.R. engine. | ||
| View original record | ③ LORRAINE - DIETRICH ENGINE. 21-3-27 MECHANICAL EFFICIENCY & COMPRESSION PRESSURE CURVES. (RATIO = 5.9 : 1). COMPRESSION PRESSURE (lbs / sq") PERCENTAGE MECHANICAL EFFICIENCY. R.P.M. OF ENGINE. COMP.… | ||
| Scan101 | Graph comparing the power per unit cubic capacity and petrol consumption of a Lorraine-Dietrich engine and a 20 HP engine. | ||
| View original record | 4 LORRAINE-DIETRICH & 20 HP R.R. COMPARISON OF POWER PER UNIT CUBIC CAPACITY & PETROL CONSUMPTION. COMPRESSION RATIOS:- LORRAINE = 5.9 to 1 20 HP R.R. = 4.75 to 1. BRAKE HORSE POWER PER LITRE R.P.M.… | ||
| Scan102 | Power curve graph for a Lorraine-Dietrich engine with comparative data for a 20 HP Rolls-Royce engine. | ||
| View original record | LORRAINE-DIETRICH POWER CURVE. Bore = 75 m/m. Stroke = 130 m/m. Cubic Capacity = 3444 c.c. Compression Ratio = 5.9 to 1. Standard Bed Exhaust System. Corrected to N.T.P. B.M.E.P. B.H.P. 20 H.P. R.R.… | ||
| Scan103 | Graph comparing the induction pipe depression of a Lorraine-Dietrich engine against a 20 HP R.R. engine. | ||
| View original record | 6 LORRAINE-DIETRICH ENGINE DEPRESSION IN INDUCTION PIPE 21-3-27 Y-Axis: DEPRESSION IN INDn. PIPE (INCHES OF MERCURY) X-Axis: R.P.M. OF ENGINE Data Line 1: 20 HP R.R. Data Line 2: LORRAINE. | ||
| Scan104 | Graph comparing the necessary ignition advance curves for a Lorraine-Dietrich engine against a Lighter Phantom engine. | ||
| View original record | 7 LIGHTER PHANTOM WITH CYL. HEAD TO L.C. 2229. ONE IGN. TWO IGNS. DEGREES ADVANCE BEFORE T.C. LORRAINE ONE IGN. TWO IGNS. LORRAINE-DIETRICH ENGINE. NECESSARY IGNITION ADVANCE. R.P.M. OF ENGINE. 50°… | ||
| Scan105 | Graph of performance curves showing gas velocity past valves for a Lorraine-Dietrich engine. | ||
| View original record | 8 INDICATED MEAN EFFECTIVE PRESSURE (LBS PER SQ IN) GAS VELOCITY. (FEET PER SEC) R.P.M. OF ENGINE. LORRAINE-DIETRICH ENGINE. CURVES SHEWING GAS VELOCITY PAST VALVES. (INLET AREA AT VALVES = 1.61 SQ… | ||
| Scan106 | Comparison graph of Indicated Horse Power and Indicated Mean Effective Pressure curves for Lorraine-Dietrich and 20 HP engines. | ||
| View original record | LORRAINE-DIETRICH & 20 H.P. R.R. COMPARISON. INDICATED HORSE POWER & INDICATED MEAN EFFECTIVE PRESSURE CURVES. LEFT Y-AXIS: INDICATED HORSE POWER RIGHT Y-AXIS: INDICATED MEAN EFFECTIVE PRESSURE (LBS… | ||
| Scan107 | Graph of the inlet valve lift and piston displacement curve for a Lorraine-Dietrich engine. | ||
| View original record | 10 LORRAINE-DIETRICH ENGINE. INLET VALVE LIFT & PISTON DISPLACEMENT CURVE. CYLINDERS OFFSET 10 m/m. (.394"). STROKE = 130 m/m (5.12"). (No Tappet Clearance). VALVE LIFT POSITION OF CRANKSHAFT… | ||
| Scan108 | Graph of the inlet valve lift and piston displacement curve for a 20 HP engine. | ||
| View original record | 11 20 H.P. ROLLS-ROYCE ENGINE. INLET VALVE LIFT & PISTON DISPLACEMENT CURVE. STROKE = 4.50" (NO TAPPET CLEARANCE) 28-3-27 VALVE LIFT (INCHES). .30 .20 .10 0 POSITION OF CRANKSHAFT. (DEGREES). 320°… | ||
| Scan109 | Graph plotting the power necessary to rotate a Lorraine-Dietrich engine against its RPM. | ||
| View original record | 12 LORRAINE-DIETRICH ENGINE. POWER NECESSARY TO ROTATE ENGINE. HORSE POWER 0, 5, 10, 15, 20, 25 R.P.M. OF ENGINE. 500, 1000, 1500, 2000, 2500, 3000 LORRAINE 20 HP R.R. LORRAINE 20 HP R.R. REQUIRED… | ||
| Scan110 | Valve spring rating chart for a Lorraine-Dietrich engine. | ||
| View original record | (13) LORRAINE-DIETRICH ENGINE. Valve Spring Rating Chart. LOAD (LBS) 50 40 30 20 10 0 RESULTANT. OUTER SPRING. INTERMEDIATE SPRING. INNER SPRING. VALVE LIFT (INCHES) .1 .2 .3 .4 VALVE CLOSED. VALVE… | ||
| Scan111 | Specification comparison between the Lorraine-Dietrich engine and the standard 20 HP R.R. engine. | ||
| View original record | GENERAL DESCRIPTION OF THE LORRAINE-DIETRICH ENGINE. (WITH STANDARD 20 H.P. R.R. FIGURES FOR COMPARISON) | | LORRAINE-DIETRICH. | 20 H.P. R.R. |---|---|---| | BORE. | 75 M/M (2.95 INS) | 3.00 INS. |… | ||
| Scan112 | Extremely faded and almost completely illegible document with a purple date stamp in the bottom right corner. | ||
| View original record | [Main body of text is illegible due to fading.] [Stamp in bottom right corner:] TEST ROOM. 31 MAR 1927 DERBY. | ||
| Scan113 | Power development experiments on a 20 HP engine by analysing the Lorraine Dietrich engine. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X3588 Hs/ACL1/LG1.4.27. 20 HP. RR. POWER DEVELOPMENT EXPERIMENTS. X790 X5771 When at analysing the results of tests made on the Lorraine… | ||
| Scan114 | Comparative bench tests between larger diameter valves and standard valves, using Zenith carburettors. | ||
| View original record | contd :- -2- ation in this direction. We considered that the larger diameter valves, in order to make a true comparison with those of the std. dimensions, should be tested in conjunction with carbs.… | ||
| Scan115 | Increasing power output by lowering induction pipe depression, comparing different carburetter configurations. | ||
| View original record | contd :- -3- INCREASED POWER WITH LOWER INDUCTION PIPE DEPRESSION. Referring to the first set of results taken which are given on Print No.1. we have the power output with the std. cyl. head for the… | ||
| Scan116 | Engine power increases achieved through the use of larger valves and different carburettor setups. | ||
| View original record | contd :- -4- We have observed that the power increase is just what would be expected from the reduction in depression. The maximum power - at 2750 r.p.m. - has been increased from 58 to 63 B.HP. or… | ||
| Scan117 | Engine performance improvements by modifying carburettors, valves, and compression ratios, with comparisons to a Lorraine engine. | ||
| View original record | contd :- -5- On Print No.4. is shewn the power output as obtained above with the two carburettors, large valves and the 5.45/1 comp: ratio compared with a standard Goshawk of 4.75 to 1 comp: ratio.… | ||
| Scan118 | Summary and conclusions from tests to increase the power of a 20 HP engine, referencing the Lorraine engine. | ||
| View original record | contd :- -6- SUMMARY AND CONCLUSIONS. The tests have proved particularly encouraging in shewing us that we can increase the power of the existing 20 HP. to the extent estimated from the Lorraine by :-… | ||
| Scan119 | Proposal to test a 6/1 compression ratio on the 20 HP engine to compare its specific output with that of the Lorraine. | ||
| View original record | contd :- -7- We also intend testing a 6/1 compression ratio in order to determine if the specific output of the 20 HP. RR. can be equal to that of the Lorraine. The results and information obtained… | ||
| Scan120 | Performance graph showing the Brake Horse Power and Brake Mean Effective Pressure increase on a 20 HP engine due to fitting larger valves. | ||
| View original record | 20 H.P. POWER INCREASE DUE TO LARGER VALVES. ENGINE No 11-GII. COMPRESSION RATIO = 5.45 TO 1 OPEN EXHAUST. TWO ZENITH TRIPLE VENTURI HORIZONTAL CARBURETTORS. CORRECTED TO N.T.P. 31-3-27. B.H.P. LARGE… | ||
| Scan121 | Blank page with a date stamp from the Derby office. | ||
| View original record | 1 APR 1927 DERBY. | ||
| Scan122 | Performance graph comparing an engine's BHP and BMEP using standard versus larger valves and different carburettors. | ||
| View original record | 20 H.P. POWER INCREASE DUE TO LARGER VALVES AND LOWER DEPRESSION IN THE INDUCTION PIPE. ENGINE No 11-GII COMPRESSION RATIO = 5.45 TO 1. OPEN EXHAUST. CORRECTED TO N.T.P. 31 - 3 - 27 B.H.P. B.M.E.P.… | ||
| Scan123 | Graph showing a 20HP power increase due to higher compression ratio, larger valves, and lower depression in the induction pipe. | ||
| View original record | 20HP POWER INCREASE DUE TO HIGHER COMPRESSION RATIO, LARGER VALVES AND LOWER DEPRESSION IN THE INDUCTION PIPE. ENGINE N° 11-GII. OPEN EXHAUST CORRECTED N.T.P. B.H.P. B.M.E.P. STANDARD 20 H.P. (OPEN… | ||
| Scan124 | Graph of gas velocity past standard and large valves relative to engine RPM for a 20 HP engine. | ||
| View original record | 5 20 H.P. GAS VELOCITY PAST VALVES. INLET AREA PAST VALVES:- STANDARD VALVES = 1.04 SQ. INS. LARGE VALVES (1.400 DIA) = 1.46 SQ. INS. STANDARD VALVES. LARGE VALVES. GAS VELOCITY (FEET PER SEC.) R.P.M.… | ||
| Scan125 | Blueprint detailing the arrangement of two Zenith carburetters on the 20HP model. | ||
| View original record | 6 SHORT EXH PIPES. HORIZONTAL ZENITH TRIPLE DIFFUSER CARB ARRANGEMENT OF THE TWO ZENITH CARBURETTERS ON THE 20.H.P. EXH PORTS INLET MANIFOLDS FLANGES FOR THE TWO ZENITH CARBS. | ||
| Scan126 | The reverse of a document or print, marked with a date and location stamp. | ||
| View original record | ROLLS-ROYCE LTD PRINT NO 1 APR 1927 DERBY | ||
| Scan127 | Experiments on crankshaft torsional vibrations and vibration dampers for the 20 HP engine. | ||
| View original record | To R. from Hs/ACL. c. to BJ. Wor. c. to RC. E. c. to DA. BY. c. to OY. X3588 Y634 X5010 Hs/ACLI/LG22.4.27. 20 HP. TORSIONAL VIBRATIONS AND VIBRATION DAMPERS. At various times we have conducted… | ||
| Scan128 | The application and effectiveness of friction dampers and harmonic balancers on engines. | ||
| View original record | contd :- -2- (1) The friction damper as already employed on RR. engines - and - (2) The Summers Harmonic Balancer as employed on the Buick, Oakland and other producers of the General Motors. (This… | ||
| Scan129 | Technical discussion on crankshaft vibration, dampers, and harmonic periods in relation to a specific engine model, 1-G-1. | ||
| View original record | contd :- -3- wheel of suitable proportions, is to split the 'master vibration' into two others, one at a higher and the other at a lower speed and therefore, if of such proportion to do this, would be… | ||
| Scan130 | Analysis of engine vibration, focusing on the factors of stiffness and inertia within the crankshaft assembly. | ||
| View original record | contd :- -4- If the master period of the std. engine could be avoided until this speed we should have little fear of encountering it, and the higher engine speeds would be expected to be less rough… | ||
| Scan131 | Page from an engine dynamics report comparing inertia and stiffness figures for two models, a standard 20 HP and a 1-G-1. | ||
| View original record | contd :- -5- strictly true - and replaced by a mass at the front end having one-third the inertia of these parts. A better approximation would be to treat each crank throw as an equivalent flywheel… | ||
| Scan132 | Page discussing crankshaft stiffness, inertia, and the free period of vibration. | ||
| View original record | contd :- -6- 1/3 [ .00799 + .00563 + .016823 ] + .00582 = .01597 lbs.ft2 and the crankshaft itself contributes .0168/3 or 35% which indicates that the inertia of the crankshaft is to a certain extent… | ||
| Scan133 | Comparison of crankshaft inertia and stiffness between the standard 20 HP engine and the Lorraine Dietrich engine. | ||
| View original record | contd :- -7- of benefit in raising the periodicity. As an example of this the stiffer shaft made for the std. 20 HP. which was 18% stiffer than std. raised the master period to 3500 r.p.m. We have not… | ||
| Scan134 | Analysis comparing the inertia and stiffness of four-bearing versus seven-bearing crankshafts, with reference to the Lorraine and Phantom engines. | ||
| View original record | contd :- -8- .04322 / 28350 X 16220 / .016823 = 1.47 or 47% greater than the 20 HP. RR. This relatively large increase in inertia to stiffness must be partly due to the longer stroke as we should… | ||
| Scan135 | Crankshaft stiffness, inertia, and vibration factors, concluding with a summary of damper types. | ||
| View original record | contd :- -9- Therefore the higher 'master period' on this engine is considered to be due to the following factors :- The crankshaft is considerably stiffer than that of the Goshawk and although this… | ||
| Scan136 | Page discussing engine design considerations for dampers, crankshaft stiffness, inertia, and timing gear drive. | ||
| View original record | contd :- -10- With the former we have had sufficient experience to shew that it is perfectly satisfactory below the master period but the latter type, although used on several American cars, would… | ||
| Scan137 | Analysis of engine vibrations and dampers for the 20 HP engine, including considerations for increasing the master period. | ||
| View original record | contd :- -11- the spring drive as pointed out by Mr. Royce in a memo. with regard to F.10. The 1-G-1 type of damper is a means of springing most of the forward mass and as this seems a promising… | ||
| Scan138 | Analysis of harmonic vibrations and their effect on the crankshaft in a six-cylinder inline engine. | ||
| View original record | contd :- -12- is considerably more severe than even the worst harmonic and gives us some idea of the difficulty we should have in providing an adequate damper to deal with it. We should not expect the… | ||
| Scan139 | Continuation page of a technical analysis on shaft frequency, harmonic vibrations, and engine speeds. | ||
| View original record | contd :- -13- The frequency of the shaft is 9900 oscillations/min. Therefore the frequency of the crankshaft will coincide with the frequency of the first harmonic of the gas pressure torque at 9900 ÷… | ||
| Scan140 | Calculation sheet for the periodicity and synchronous speed of a Lorraine-Dietrich crankshaft. | ||
| View original record | PERIODICITY OF LORRAINE DIETRICH CRANKSHAFT. [Diagram of a crankshaft with Flywheel, Fan Pulley, and Node] FLYWHEEL I₁ CRANKSHAFT I₃ FAN PULLEY I₂ Node l₂ l₃ L THE POSITION OF THE NODE IS GIVEN By l₂… | ||
| Scan141 | Blank document page with a 'Royce, Limited, Print Room, Derby' stamp. | ||
| View original record | ROYCE, LIMITED PRINT ROOM 25 APR 1927 DERBY. C.P. | ||
| Scan142 | Diagram showing the amplitude of torsional oscillation due to gas pressure harmonics at full throttle for a Standard 20 engine without a damper. | ||
| View original record | TORSIONAL VIBRATIONS:- STD 20 R.R. WITHOUT DAMPER DIAGRAM SHEWING AMPLITUDE OF OSCILLATION DUE TO HARMONICS OF GAS PRESSURE TORQUE AT FULL THROTTLE. THE STD DAMPER DEALS EFFECTIVELY WITH THESE EXCEPT… | ||
| Scan143 | Mostly blank document page with a purple company stamp in the bottom right corner. | ||
| View original record | [...ROYCE, LIMITED] PRINT ROOM 25 APR 1987 DERBY. | ||
| Scan144 | Graph plotting power increase and induction pipe depression against engine RPM for a 20HP engine. | ||
| View original record | 20HP POWER INCREASE DUE TO LOWER DEPRESSION IN INDUCTION PIPE. ENGINE No 11-GII COMPRESSION RATIO = 5·45 to 1. OPEN EXHAUST. CURVES CORRECTED TO N.T.P. B.H.P. STD. 20 HP CARB. ZENITH TRIPLE VENTURI… | ||
| Scan145 | The reverse side of a document page with a purple ink stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE LTD. PRINT REC'D 1 APR 1927 DERBY | ||
| Scan146 | Suggesting a modified valve timing for the Sports Phantom to improve high-speed output. | ||
| View original record | To Hs. from E. c. to BJ. BY. X3588 E1/M23.4.27. SPORTS PHANTOM. X.3588 X.5770 X.8060 X.5771 Referring to the report giving comparison of Lorraine output with output of 20 HP. engines under different… | ||
| Scan147 | Request for a 20 HP car for use and reference, preferably a Lorraine model with a crankshaft damper. | ||
| View original record | To Hs. from R. c. to DA/EV. X3588. re. 20 HP. X.5770 X.3588 R9/M3.5.27. We shall be wanting a 20 HP. car at WW. for use and reference. Any type will do, but I should like it with a smart covered body.… | ||
| Scan148 | The return of a Lorraine Dietrich car to France for sale, due to it having left-hand steering. | ||
| View original record | To R. from Hs. c. to DA/EV. X3588 Hs3/LG6.5.27. LORRAINE DIETRICH CAR. X5770 We have returned this car to France to be sold. When we purchased the Lorraine we did not pay duty on it because it was… | ||
| Scan149 | Internal memorandum about returning a left-hand steering Lorraine Dietrich car to Paris for sale, and the status of three other car bodies designated for scrap. | ||
| View original record | X3588 To G/WFH. from Hs. Hs3/LG30.11.27. X5830 Replying to G/WFH10/HO30.11.27. The Lorraine Dietrich car was return to Paris in the beginning of May in order to be sold. The reason it was sent back… | ||