Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Minutes of a conference discussing proposed alterations for American cars, specifically Report B. | ||
| View original record | X.3900. COPY. REPORT B. December, 2nd. 1919. RE ALTERATIONS PROPOSED AS DESIRABLE ON AMERICAN ROLLS-ROYCE CARS. Minutes of morning conference held at 27 William Street, Saturday, November, 29th 1919.… | ||
| Scan002 | Suspension components, comparing grease cups to oilers and proposing design improvements. | ||
| View original record | contd. -2- December, 2nd. 1919. The only way to take up this side play at present is by inserting thin discs at either side of the eye. Mr. Caswell suggested that the eye should be bushed from either… | ||
| Scan003 | Report C from a conference detailing proposed alterations for American Rolls-Royce cars regarding steering and suspension. | ||
| View original record | X.390-0 COPY. Report C. December 2nd. 1919. RE ALTERATIONS PROPOSED AS DESIRABLE ON AMERICAN ROLLS-ROYCE CARS. Afternoon conference held at 27 William Street, Saturday, November 20th 1919. Present :… | ||
| Scan004 | Proposed alterations for American cars, covering luggage carriers, body mounting, and rear spring shackles. | ||
| View original record | X.39006 Alterations proposed for American R.R. Cars. -3- A/ 2nd. December, 1919. Contd. ventilator in the dashboard (6) A standardised Rolls-Royce Luggage carrier is most desirable, in view of the… | ||
| Scan005 | Chassis lubrication, battery placement, American market modifications, and starter/pump options. | ||
| View original record | Contd. -4- December, 2nd. 1919. would be filled up with oil periodically, from a syringe and the oil would pass through the hole drilled in the bottom of the shaft into the space between the two… | ||
| Scan006 | List of parts sent from the United States, detailing the experimental work required for each. | ||
| View original record | X.3900 Jan. 30th 1920. X.3893- PARTS SENT FROM THE STATES ON JAN. 30TH '20. WHICH EXPERIMENTAL WORK IS REQUIRED. Will be out in) (18) 3 Berling Magnetos. - shipped from Makers next week. } X.3702 Oct.… | ||
| Scan007 | Bump rig tests of split rear springs fitted with extra clips, detailing the results and various leaf breakage times. | ||
| View original record | X-3900 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to EP. c. to Cy. Hs3/LG12.4.20. X.2628. RE REAR SPRINGS. X.1331. X.1295. We have carried out tests on the bumping rig with split rear… | ||
| Scan008 | The unreliability of present rear springs compared to pre-War models, recommending a return to the old type. | ||
| View original record | Contd. -2- Hs3/LG12.4.20. The results of the bump test show conclusively that the present rear springs which we are fitting are very much less reliable than those we fitted previous to the War. Even… | ||
| Scan009 | Issues with rear spring plate breakages and the decision to revert to a pre-war design. | ||
| View original record | Na. from EY. c. to Stn. c. to Mr. Booth. c. to Hs. EFC x.3900 ! BY3/P13.4.20. X.2628 CHASSIS - REAR SPRINGS AND FITTINGS. X 3900 Owing to the fact that we are having considerable trouble due to plates… | ||
| Scan010 | Rear springs, confirming a cable has been sent to America as requested. | ||
| View original record | X3900 To R. from CJ. Copy to Hs. Re Rear Springs. CJ1/E.21.4.20 My dear R., Referring to your R4/G.20.4.20, I attach herewith copy of cable sent to America in accordance with your wishes. Yours ever,… | ||
| Scan011 | Cable sent to Springfield with instructions to halt production of rear springs. | ||
| View original record | Copy of Cable sent to Springfield. 21.4.20 ROLLSROYCE SPRINGFIELD MASS. ROGAMANTA EIGHTYONE CHAMBREAS PERCREPO DO NOT COMMENCE PRODUCTION OF REAR SPRINGS UNTIL YOU OF REAR SPRINGS UNTIL YOU RALEANDO… | ||
| Scan012 | Export of parts to America for the American-built chassis and a discussion about road springs. | ||
| View original record | Na. from BY. EFC c. to BHn. c. to Hs. X.3900 COPY. BY12/F18.5.20. X.3614. Re American built chassis. X.3702. X.3578 In two of my recent memos, reference BY/Btnl/W30420 and BY/Mtnl/W12520, I have… | ||
| Scan013 | Continued memorandum discussing a proposal to supply information and obtain a settlement. | ||
| View original record | H.B. 934 e 480 T. (S.G. 504. 8-1-20) G. 2585. Contd. -2- carried out could be reported upon. I therefore propose to keep closely in touch with Mr. Hives on this particular question and to supply you… | ||
| Scan014 | Recommendation to use pre-war rear springs for American chassis due to reliability and reduced squeaking. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. x3900b Hs2/LG30.7.20. X.3900b. RE SPRINGS FOR AMERICAN CHASSIS. X.2628b. We have, in another report, given the life of the modified… | ||
| Scan015 | Ordering road springs for Rolls-Royce of America, Inc. and potential delays due to supplier holidays and pattern changes. | ||
| View original record | X.3900 EWT. from Wd. c. to Wo. c. to H. c. to HS. c. to D/BP. c. to Ms. gife. Wd8/NJG.8.20. X.3900 ROAD SPRINGS FOR ROLLS-ROYCE OF AMERICA, INC. X.3981 In reply to yours EWT18/GS.8.20. we are today… | ||
| Scan016 | Cable detailing a complaint about 'American springing' and a recommendation on suspension setup. | ||
| View original record | R.R. 886a (100 T) (N.H. 150, 11-8-20) G. 2800 X3900 S.F.C To Wor. from Hs. c. to EY. c. to Wd. c. to Hm. c. to Mr. Maddocks Test Dept. Hs3/LGS.10.20. X.2628 X.3900 We have received the following cable… | ||
| Scan017 | Cover note for a cablegram received from Rolls-Royce of America Inc. and copies of other related cablegrams. | ||
| View original record | X.3900 Wor. (struck through) EWT. to EP. Hs. (struck through) BY. (struck through) Wd. (struck through) EWT/HJC9/G5.11.20. Attached hereto is copy of cablegram No.172 received from Rolls-Royce of… | ||
| Scan018 | Copy of a decoded cablegram from the Springfield, America office regarding production parts. | ||
| View original record | C O P Y. D/BP/RB/CW. November 5th. 1920. Below is cablegram received from R.R. of America Inc: Springfield to-day:- IVVEZSOBDU (IVVEZ - Number (SOBDU - 172 OSYMOSOBBI (OSYMO - Refer to our last but… | ||
| Scan019 | Copy of a cablegram to Springfield regarding a shipment of goods. | ||
| View original record | WHS Copy of our cablegram No. 275 to Springfield. ROLLSROYCE SPRINGFIELD MASS. Nov.3rd.1920. WITH REFERENCE TO YOUR TELEGRAM 167 THINS ON RIMOUSKI LEFT OCTOBER 27TH. AS FOLLOWS 6 - 2000 POUNDS 5 -… | ||
| Scan020 | Clarifying a mutilated telegram regarding the supply of springs for the American market. | ||
| View original record | Ah. C O P Y. To EWT. from BJ. c. to R. BJ(Py-5/DB29.10.20. RE SPRINGS FOR AMERICA Referring to my memo: BJ(Py)21/DB27.10.20 - we have now obtained repetition of the mutilated words and the cable now… | ||
| Scan021 | Copy of a cablegram to Claude Johnson in New York regarding shock dampers, springs, and an experimental car. | ||
| View original record | 14 C O P Y. CLAUDE JOHNSON 18/10/20. RITZCARLTON HOTEL NEWYORK. ALL AGREE WE ONLY SUGGEST USE OF SHOCK DAMPER IF DAMPING FRICTION THIN LEAF SPRING INSUFFICIENT EIGHTY MORE THINS READY END OF OCTOBER… | ||
| Scan022 | Fitting of thin leaf springs and a friction device to the steering pivots on all American cars. | ||
| View original record | BY. from EP. c. to Wor. c. to Hs. c. to D.for Rd. EP. √3900 Copy of R'S4 Cg's note m Cg's file EP20/F9.11.20. √3900 RE. FITTING OF THIN LEAF SPRINGS AND FRICTION DEVICE TO THE STEERING PIVOTS ON ALL… | ||
| Scan023 | Points for attention regarding post-war American cars, specifically rear springs, front steering pivots, and ignition. | ||
| View original record | Wor. from EP. c. By. c. Wd. c. Hs. c. CJ. X3900 EP6/F11.11.20. 11th Nov. 1920. X.3614. RE AMERICAN VISIT - POINTS FOR ATTENTION. (1) REAR SPRINGS. X.2628. X.3461. X.3900. It has now been agreed by R… | ||
| Scan024 | Technical memorandum discussing spring shackle clearance and the use of sheet nickel silver for radiators. | ||
| View original record | Contd. -5- In view of our experience with this system, however, also the fact that there was no serious trouble taking place with our present petrol system, I do not think that any change is… | ||
| Scan025 | The fitting of thin leaf springs and a friction device to the steering pivots on all American cars. | ||
| View original record | RN. from EP. c. to WCR. c. to HS. c. to D. for Rd. x 3900 A.T. EP16/F17.11.20. RE. FITTING OF THIN LEAF SPRINGS AND FRICTION DEVICE TO THE STEERING PIVOTS ON ALL AMERICAN CARS. Further to our memo.… | ||
| Scan026 | Strength of springs fitted to cars for the American market and the decision not to claim costs for changes. | ||
| View original record | CJ. from EP. EP11/F17.11.20. 17th. Nov..1920. SPRINGS FOR AMERICA. With reference to your CJ11/E12.11.20 attaching copy of telephone message from R. to CJ dated 12.11.20 attached, although I quite… | ||
| Scan027 | Outlining recommendations for replacing thick leaf rear springs with thin leaf springs on cars for the American market. | ||
| View original record | EP11/F7.11.20. Contd. 2. 17.11.20. complaint, and it was on these lines that I discussed the matter with the American Officials, and I am sure that this will meet their requirements. Our… | ||
| Scan028 | From CJ to EP asking for remarks on a proposal about 'Springs for America' following a telephone message from Mr. Royce. | ||
| View original record | COPY. To EP from CJ. SPRINGS FOR AMERICA. CJ11/E12.11.20. I attach herewith copy of telephone message received from Mr. Royce this morning. Please let me have your remarks as to how this proposal… | ||
| Scan029 | Telephone message about the decision to use thin leaf springs for American cars and the cost of rectifying a previous error. | ||
| View original record | COPY. Telephone message from R. to CJ. Taken down by JS. 12.11.20. Re springs for America, I have EP's decision that the thin leaf springs are definitely better for their road conditions because we… | ||
| Scan030 | Instructions for fitting thin leaf springs to American cars. | ||
| View original record | x3900 AT BY. C. to NOR. C. to MS. C. to D. for Rd EP4/F25.11.20. x3900 FITTING OF THIN LEAF SPRINGS TO AMERICAN CARS. With further reference to the above and our last memo. on this subject,… | ||
| Scan031 | Cablegram from Springfield, USA to London, UK with a coded message and its handwritten decoded translation about car parts. | ||
| View original record | CABLEGRAM Form 2B. (10/20.) Handwritten Annotations: X.3900, R.R.2 JTW/5. X5591 SPRINGFIELD MASS 18 To: ROLHEAD LONDON From: ROLLSROYCE Coded Message: IVVEVSLYIX HIVES IJIJU WEARING YOGKEIZGAR REAR… | ||
| Scan032 | The testing of two different 13-leaf bumper chassis springs. | ||
| View original record | HS X4558 (crossed out) X3900 REPORT ON BUMPER CHASSIS SPRINGS. F.4633 U.S.A. Spring consisting of 13 leaves with tapered ends, nibs and slots, tie clips. 1100 lbs. Fitted to N.S. Bump chassis 21.7.21.… | ||
| Scan033 | Comparing the durability of American-manufactured front springs against standard Woodhead springs via bump testing. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT. for R.R. Inc. X3900 COPY Hsl/LG10.8.21. X.2628 X.3764 PARTS FITTED TO 4.EX CAR IN U.S.A. X3900 The front springs fitted to 4.EX Car… | ||
| Scan034 | Laboratory analysis comparing the chemical composition and grain structure of an American spring and a Woodhead's spring. | ||
| View original record | COPY X3900 Hs. Hll/EB11.8.21 Laboratory. X3900 Re American Spring and Woodhead's Spring. X2628 Analysis. American. Woodheads. Carbon .42 .55 Manganese .85 .40 Nickel nil nil Phosphorus .017 .032… | ||
| Scan035 | Failure of American-made springs due to faulty heat-treatment. | ||
| View original record | X3900 RECEIVED Na2/S2.9.21 Sept. 2, 1921. C.C. Mr. Hives Mr. Olley Mr. Claude Johnson, Managing Director, Rolls-Royce, Limited, 15 Conduit Street, London, England. Attention Mr. Royce. Re: Springs… | ||
| Scan036 | The inspection process for heat-treating and testing springs. | ||
| View original record | C. J. - 2 - Na2/B2.9.21 Our Inspector, who is always present during the heat-treating of the Springs, makes a heat-treating, fracture and Brinell test on each heat of steel before it is placed in use.… | ||
| Scan037 | Material selection for Goshawk 11 frames. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to Wd. c. to BY. c. to Da. 3900 R7/G12.10.21. X.4260 - RE GOSHAWK 11.FRAMES. X.3900 These frames should be on order, but I am not clear yet that we have settled… | ||
| Scan038 | Laboratory analysis of 'Very good American Spring No. 2'. | ||
| View original record | R.R. 25m (100 T) (S.H. 798, 10-12-20) G. 2948 X3900 Hs. H12/GLT 7.9.21. Laboratory. Re Very good American Spring. No 2. Analysis:- Carbon. 0.44% Manganese 0.72% Nickel. Nil Chromium. Nil Silicon.… | ||
| Scan039 | On the superior test results of front springs supplied from the U.S.A compared to Woodhead Springs. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT. for R. R. Inc. X3900 Hs3/LG20.9.21. X.3900 X.2628. FRONT SPRINGS SUPPLIED FROM U.S.A. In our memo. Hs1/LG10.8.21 we reported that we… | ||
| Scan040 | Laboratory analysis of the chemical composition and hardness of an American spring. | ||
| View original record | Hs. Laboratory. H12/GLT/7.9.21. Re. Very good American Spring No. 2. Analysis:- Carbon. 0.44% Manganese. 0.72% Nickel. Nil. Chromium. Nil. Silicon. 1.83% Sulphur. 0.030% Phosphorus. 0.018% The brinell… | ||
| Scan041 | Inter-office correspondence discussing spring breakages and weight distribution, comparing American and English cars. | ||
| View original record | R.R.A.25 25m. 12-29-20 40849 Y262F X3900 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. Oyl - G 10622 June 10, 1922 CONFIDENTIAL Dear Hives: Re: Springs (Hs5/G 11.5.22) I… | ||
| Scan042 | Front and rear spring clearances, bumping issues, and the effects of spring lubrication. | ||
| View original record | Oyl - G 10622 -2- June 10, 1922 body weight (including wings, lamps, etc.) is on the front axle. This difference sometimes means a step up of 100 lbs. on each of the front springs, which is enough to… | ||
| Scan043 | Technical discussion on rear spring lubrication, bouncing frequency, and design comparison between pre-war and post-war models. | ||
| View original record | Oyl - G 10622 -3- June 10, 1922 Gaiters packed with grease are the worst possible thing for the rear springs, since they dry out and become so stiff that they throw you at the rear continually. When… | ||
| Scan044 | Spring specifications and performance characteristics for various vehicle body types. | ||
| View original record | Oyl - G 10622 -4- June 10, 1922 unloaded position of the springs and the springs are properly lubricated, it will have an actual frequency of 70 to 80 complete bounces a minute depending on the… | ||
| Scan045 | Breakdown of vehicle weight distribution between the front and rear wheels for springing calculations. | ||
| View original record | Cyl - G 10622 -5- June 10, 1922 This is founded on following distribution: Front Wheels Rear Wheels Chassis (full tanks & battery ) 1785 lbs. 1785 lbs. Less unsprung weight - counting 2/3 of front… | ||
| Scan046 | Cover note for an attached report concerning a Rear Spring Roller received from Springfield. | ||
| View original record | To H. from BJ. Copies to Hs. BJ/Py17/H10.8.23. X3900 Report Oyl/W72323. Rear Spring Roller. We attach a copy of Oyl/E72823 of July 28th, which has been received from Springfield this morning. BJ/Py. | ||
| Scan047 | Letter regarding a report on an hourglass-shaped rear spring roller to prevent noise, noting an omitted sketch is now attached. | ||
| View original record | Oyl-W-72823 July 28, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce) Mr. Platford Mr. Hives ✔ Dear Sir: In our report Oyl-W-72823, reference was made… | ||
| Scan048 | Design proposal for an 'Hour Glass' type of rear spring roller. | ||
| View original record | PROPOSAL FOR "HOUR GLASS" TYPE OF REAR SPRING ROLLER IN CASE OF HEAVY SIDE BLOWS SPRING EXPECTED TO RISE AGAINST STOP RADIUS OF PLATE ABOUT 95% OF RADIUS OF ROLLER by July 27 | ||
| Scan049 | Request to compare sample 40/50 HP front and rear axle springs from Springfield with current supplies from Messrs. Woodhead. | ||
| View original record | X3900 BY from ROY. c. to Hs. c. to Sft (Mr. Cox) ---------------- ROY12/MG10.8.23 ---------------- Springfield, at our request, have forwarded sample 40/50 HP. Front and Rear Axle Springs, Piece Nos.… | ||
| Scan050 | Letter received from Springfield concerning shackles. | ||
| View original record | To H. from BJ. Copies to Er. Hs. X.3900 Re SHACKLES. I attach a copy of a letter received from Springfield this morning (Oy7/W8823). BJ23/H20.8.23. V473 X.3900 B.J. | ||
| Scan051 | Letter addressing complaints of wear and rattle in shackle pins and proposing an alternative design. | ||
| View original record | Oy7-W-8823 August 8, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce) (Mr. Platford) (Mr. Hives) Dear Sir: Re Shackles X3900 One of our principal… | ||
| Scan052 | Page 2 of a memo proposing a modified device scheme to Mr. Royce for increased convenience and decreased service cost. | ||
| View original record | -2- Oy7-W-8823 Actually this device does not unscrew in practice, and since there are no split pins or tabbed washers, the adjustment is so simple that there is no excuse for neglecting it. The… | ||
| Scan053 | Design drawings and suggestions for adjustable shackles. | ||
| View original record | BUICK-TYPE SHACKLE ON REAR SPRINGS A LONGER SHACKLE IS USED WITH A CROSS BAR ON FRONT SHACKLES LEFT HAND ARM TAKES LATERAL BENDING STRESSES. PIN IS CLOSE SLIDING FIT IN R.H. ARM AND HAS AMPLE BEARING… | ||
| Scan054 | Cover note for an inspection report on sample axle springs from Springfield. | ||
| View original record | Hs. from ROY. ---------------- X3900 ROY5/MG14.12.23 ---------------- Following our recent conversation re sample Axle Springs ex Springfield, attached is copy of Inspection Department Report on same,… | ||
| Scan055 | Test report comparing two U.S.A. springs against drawing specifications. | ||
| View original record | REPORT SPRING F.4625 (U.S.A) Spring is stamped F.4632. Poundage 1050 lbs. Poundage given on test, 1103 lbs. The leaves are badly fitted leaving gaps of .015 between plates. Spring has 13 plates.… | ||
| Scan056 | Case 187 containing various spring insulators and bearing plates for Rolls-Royce of America Inc. | ||
| View original record | Y3900 Chat. c - Hs.✓ D/BP/Y87/MH.22.8.24. Re case 187 ex Rolls-Royce of America Inc Springfield. ----------------------- Please expect from the above via Claridge Holt & Co.Ltd., Liverpool by… | ||
| Scan057 | The distribution of chassis and body weights between the front and rear wheels. | ||
| View original record | Oy1-E-62625 June 28, 1925. Handwritten: File: "Car & Chassis Wts" DISTRIBUTION OF CHASSIS AND BODY WEIGHTS | | Total | Front Wheels | Rear Wheels |---|---|---|--- | Chassis with bumper and battery… | ||
| Scan058 | Table detailing the distribution of chassis and body weights for various car models. | ||
| View original record | Oy1-E-62625 -2- June 26, 1925. Distribution of Chassis and Body Weights (cont'd.) Total Front Wheels Rear Wheels Chassis etc. 4140 2145 1995 Roadster 4920 2360 2560 Body 780 215 565 Phaeton 4980 2360… | ||
| Scan059 | Table of riding complaints and their probable causes related to front and rear suspension. | ||
| View original record | Oy2-E-2826 February 8, 1926. Table of Riding Complaints and Probable Causes. Complaint 1. Pitching at speeds above 35 m.p.h. 2. Rear passengers thrown forward off seat backs at high speeds. 3.… | ||
| Scan060 | Analysis and comparison of American car springs with English springs. | ||
| View original record | To Hs. from DA. (3900 DAL/M13.7.25. SPRINGS ON AMERICAN CAR. X.3900 X.8410 We should very much like to take one of these springs off the chassis, take it to pieces, and thoroughly measure it up as… | ||
| Scan061 | Comparison of a front spring fitted to a Springfield chassis with a Woodhead spring. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. £3900 Hel/LG/21.7.25. SPRINGS FOR THE AMERICAN RR. CHASSIS. X2628 Attached is a comparison of a front spring fitted to the… | ||
| Scan062 | Specification and comparison sheet for the front springs of American Chassis S-107-MK. | ||
| View original record | W.12.S.17 FRONT SPRINGS OF AMERICAN CHASSIS No S-107-MK S OF RIGHT HAND SIDE FRONT SPRING. REFER TO SIMILAR SPRINGS MANUFACTURED BY FLETCHER-LADBROKE WASBRO'. First Table: | | AMERICAN. | FLETCHER-LAD… | ||
| Scan063 | Blank document page with a red 'Print Room' stamp from Derby. | ||
| View original record | ROLLS-ROYCE LIMITED. PRINT ROOM 20 JUL 1925 DERBY. | ||
| Scan064 | Query seeking further details on the manufacturing differences between American and Woodhead springs, particularly regarding plate accuracy and heat treatment. | ||
| View original record | To Hs. from DA. X3900 DAL/M24.7.25. AMERICAN SPRINGS. X.3900 X. 2628 The information you give in your Hs1/LG21.7.25. is what we were hoping to get, but in addition we should like to know whether the… | ||
| Scan065 | Requesting a reply to an attached document concerning Road Spring Bumping Tests. | ||
| View original record | V3900 BJ to Hs. BJ5/WES19.9.25. Re: Road Spring Bumping Tests We attach a copy of Oy8/E/9825, regarding the above. Will you please prepare a reply and send it through me. BJ. | ||
| Scan066 | Letter requesting information on road spring bumping tests and specifications for spring steel. | ||
| View original record | Oy8-E-9825 September 8, 1925. RECEIVED Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. For the attention of Mr. E. W. Hives. Dear Sir: Re Road Spring Bumping Tests We should appreciate… | ||
| Scan067 | Poor quality of front springs on the Phantom and 20 HP models and suggesting further investigation. | ||
| View original record | To Hs. from DA. c. to CJ. c. to EY. FRONT SPRINGS. X.5410 X.3803 X.8410 X.3900 Referring to the front springs for both the Phantom and the 20 HP. and to the possibility of improving their life, either… | ||
| Scan068 | Revised road spring schedule and weight calculations for various car models. | ||
| View original record | OyS-E-102025 October 28, 1925. [Handwritten note: Car + Chassis No.?] To: Mr. Nadin Mr. Bagnall Mr. Hulley Mr. Southern Mr. Caswell Mr. Steele - Mr. Spencer Mr. Ross Mr. Burton Mr. Beaver Mr.… | ||
| Scan069 | Table of frame clearance measurements for various car models with and without passengers. | ||
| View original record | OyS-E-102025 -2- October 20, 1925. Rdstr. Phae. Tour. Sal. E.D.Cab. Full Cab. Sedan Lim. Frame clearance to touch rubber With flat springs front clearance = 2.150 rear clearance = 7.000 Without… | ||
| Scan070 | Blueprint for a front shock absorber spring. | ||
| View original record | 5834 / A DRAWING NO A7352 SEE ALSO THE FOLLOWING OPERATION DRAWINGS ALLOWABLE VARIATIONS TO SUIT MAKER WORKING LENGTH: 2.200 NONE LOAD AT WORKING LENGTH: 700 LB. ±25 LB. LENGTH TO WHICH SPRING MUST… | ||
| Scan071 | Cover note attaching a copy of a letter from Mr. Fuller for information. | ||
| View original record | To R. From BJ. Copy to Wcr. BY. Hs. X3900 R.R. of America Inc. Road Springs. BJ1/E11/11/25 Referring to your K4/W15/10/25, I attach copy of Mr.Fuller's letter of 30th October 1925 for your… | ||
| Scan072 | Letter from the American branch to the UK branch regarding the in-house manufacturing of road springs. | ||
| View original record | COPY. Rolls-Royce of America Inc. 40, Wall Street, New York. October 30th 1925 Mr. Claude Johnson, Rolls-Royce Ltd., 15 Conduit Street, London, W.1., England. My dear Mr. Johnson:- Yours of October… | ||
| Scan073 | From Mr. Nadin to Mr. Beaver regarding the proposal to manufacture front springs in-house. | ||
| View original record | COPY. October 28, 1925. To: Mr. Beaver. From Mr. Nadin. With reference to Mr. Royce's comment on our proposal to make our own front springs, I think he would be interested to learn something more of… | ||
| Scan074 | Difficulties in sourcing high-quality springs from various suppliers, leading to the decision to manufacture them in-house. | ||
| View original record | -2- We had considerable trouble with these people but they continued to turn out the springs we required, until business became better, and their factory became full. Our work then became less… | ||
| Scan075 | The manufacturing process for vehicle springs. | ||
| View original record | -3- 3. Taper ends and trim to shape. (These two operations are performed hot, the tapering in a rolling mill, and the trimming in a press having two sets of discs, one for the larger plates and the… | ||
| Scan076 | Manufacturing process and equipment for vehicle springs. | ||
| View original record | -4- The rear spring back plate is much simpler and will merely require an eye rolling from stock of the finished size. This operation should be done in a hand machine as the quantity we require would… | ||
| Scan077 | List of machines and costs required for producing springs. | ||
| View original record | COPY. October 28, 1925. To Mr. Beaner From Mr. Nadin. LIST OF MACHINES REQUIRED FOR PRODUCING ROLLS-ROYCE SPRINGS. 1. Alligator Shear. $1,450.00. 2. Small Furnace. 500.00. 3. Taper Rolling Mill… | ||
| Scan078 | Results of riding tests, focusing on seat cushion damping and comfort. | ||
| View original record | Oy1-E-121425 December 14, 1925. To: Mr. Beaver cc Mr. Nadin Mr. Caswell Mr. Hulley From: Mr. Olley Mack Riding Tests Results of the tests made September 21st and 22nd are now received. The results of… | ||
| Scan079 | Ride quality experiments comparing balloon and cord tires, and discussing the psychology of riding comfort. | ||
| View original record | Oy1-E-121425 -2- December 14, 1925. ----------- "Former experiments have indicated that accelerations greater than 100 "Newts" per mile give poor riding, while 50 or less is very good. The majority of… | ||
| Scan080 | Improvements to vehicle ride comfort through adjustments to suspension, coachwork, and tires. | ||
| View original record | Oy-1-E-121425 -2- December 14, 1925. Meanwhile it would be well I think to have Mack repeat the tests at a time convenient to them and this time make real preparations for it (as we failed to do last… | ||
| Scan081 | Typed page discussing a working line and a limit that has been reached. | ||
| View original record | Oy1-E-121425 -4- December 14, 1925. (c) above is the line along which both England and we are working at the present time. We have however touched the limit beyond which we cannot go without (d). COPY… | ||
| Scan082 | Graph plotting the results of riding tests with Mack engineers, comparing different vehicle cushion and damping setups on a varied course. | ||
| View original record | For evaluating seats, operator held instrument in lap. RIDING TEST RESULTS WITH MACK ENGINEERS. SEP 21 & 22 1925. SHEET 1. RESULTS AT 30M.P.H ON VARIED COURSE Newton Accelerometer LEGEND: No 1… | ||
| Scan083 | Graph of riding test results at various speeds on concrete, comparing different vehicle cushion and floor setups. | ||
| View original record | RIDING TEST RESULTS WITH MACK ENGINEERS SEP 21 & 22 / '23 SHEET R. RESULTS AT VARIOUS SPEEDS ON CONCRETE NEWTON ACCELEROMETER [FOR CUSHION TESTS OPERATOR HELD INSTRUMENT IN LAP] Y-AXIS: NEWTOMETER… | ||
| Scan084 | Letter discussing vehicle riding qualities and the desire for more flexible front springs, with comparisons to competitor vehicles. | ||
| View original record | Oy4-E-121825 December 18, 1925. Mr. R. W. H. Bailey, Rolls-Royce, Ltd., Derby, England. Dear Mr. Bailey: Re Riding qualities We should be glad to know whether you have any developments coming through… | ||
| Scan085 | Study on spring suspension frequency related to deflection and passenger comfort. | ||
| View original record | Oy4-E-121825 -2- December 18, 1925. We have all along worked on the assumption that the frequency of the spring suspension depended on its deflection and was independent of the load or rating (i.e. a… | ||
| Scan086 | Comparison of spring weights and specifications for different sedan models. | ||
| View original record | Oy4-E-121825 -3- December 18, 1925. The average of the more expensive cars over here are therefore softening their front springs a lot and using more effective (but "gentler") shock absorbers in… | ||
| Scan087 | Procedures followed to improve the riding on model 12-MC. | ||
| View original record | Oy4-E-121825 -4- December 18, 1925. weigh 120 lbs. on the front and 480 lbs. on the rear axle. Thus front spring required = Sprung load rear spring required = 1 1/2 sprung load.) Procedure followed to… | ||
| Scan088 | Test report on front spring deflection, ratings, and ride quality modifications. | ||
| View original record | Oy4-E-121825 -5- December 18, 1925. 7. (cont'd.) Right front Stamped "1150" Left front Stamped "1100" Flat (App. 2.600 deflection) 910 lbs. 895 lbs. .5 negative (App. 3.100 deflection) 1090 " 1070 "… | ||
| Scan089 | The results of tests on a 1150 lb. spring with different axle clips. | ||
| View original record | Oy4-E-121825 -6- December 18, 1925. 9. The following are the results (averages of up and down) on a Springfield 1150 lb. spring. Deflection Plain Spring Narrow Clip Wide Clip 1" 340 345 375 2" 662 675… | ||
| Scan090 | Technical note on spring lubrication and the effect of brakes on road clearance. | ||
| View original record | Oy4-E-121825 -7- December 18, 1925. Note 2. (cont'd.) before, and so reducing the bending effect from the brakes. This reduces the road clearance, but the spring is so well shaped for a "skid" that it… | ||
| Scan091 | Letter from Maurice Olley to E.W. Hives discussing a Norton accelerometer record of riding on a rough road. | ||
| View original record | SPRINGFIELD, MASS. Oy4-E-2826 X3900 February 8, 1926. Mr. E. W. Hives, Mickleover, Near Derby, England. Dear Hives: I have cut out this sample to show you a typical Norton accelerometer record of… | ||
| Scan092 | Personal letter discussing tests and feedback on the riding quality of the Phantom model. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy3-E-2826 February 8, 1926 Mr. E. W. Hives, Mickleover, Near Derby, England. (Personal) Dear Hives: Re Riding quality of Phantom Many thanks for copy… | ||
| Scan093 | Phantom ride quality issues, comparing English and American road conditions and discussing spring modifications. | ||
| View original record | Oy3-E-2826 -2- February 8, 1926 Our impression was that it would be pretty good on English roads which do not have the "Marcel wave" (due to frost and heat) of our roads. Our experience on Phantoms… | ||
| Scan094 | Acceleration testing machines and various types of shock absorbers. | ||
| View original record | Oy3-E-2826 -3- February 8, 1926 which may either be set on the floor or carried on the knees of the passenger. The Newton machine measures total reversal of acceleration per mile, (the unit being a… | ||
| Scan095 | Car springing, weight distribution, and comparing specifications between Springfield and Derby plants. | ||
| View original record | Oy3-E-2826 -4- February 8, 1926 Springing complete cars. It is difficult to compare your formulae with ours because:- (a) We work back from the complete car weights (and are now making the custom… | ||
| Scan096 | Detailed analysis of vehicle weight distribution, including front, passenger, and coachwork weights for various car models. | ||
| View original record | Oy3-E-2826 -5- February 8, 1926 Front weight. I think you will find it interesting to note that there is less than 100 lbs. total difference in front weight between our lightest and heaviest car, all… | ||
| Scan097 | Letter discussing coachwork weight allowance and an attached diagnosis table for springing complaints. | ||
| View original record | Oy3-E-2826 -6- February 8, 1926 but your allowance of 11 cwt. (1130 lbs.) for a total coachwork weight seems to us low for anything but a roadster or 5 seater open job. The attached "diagnosis" table… | ||
| Scan098 | Personal letter from Maurice Olley to E. W. Hives regarding front spring design and its effect on ride and steering. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Y3950 Oy3-E-21026 February 10, 1928 Mr. E. W. Hives, Mickleover, Near Derby, England. (Personal) Dear Hives: Re Front Springs I would appreciate a… | ||
| Scan099 | Drawing of a front spring bush. | ||
| View original record | DRAWING NO A7030 SEE ALSO THE FOLLOWING OPERATION DRAWINGS 6062 A 6079 A BREAK CORNER .025R ±10 1.900 ±5 REAM .652 DIA. TAP .750 DIA. 12 T.P.I. R.H. U.S. FORM GRIND .853 DIA. TRUE WITH THD. BREAK… | ||
| Scan100 | American report on vehicle springing, focusing on axle weight distribution and axle-pad design. | ||
| View original record | X3900 CWB12/DN1.3.26. TO Hs FROM CWB I attach hereto the American report on springing which you kindly lent me. It really is most interesting. Perhaps you will let me know what results they find when… | ||
| Scan101 | Letter discussing methods for measuring vehicle ride quality and its importance for sales. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X3900 Oy3-E-31026 March 10th, 1926 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Riding Qualities Dear Hives: I have just received your letter… | ||
| Scan102 | Vehicle suspension, ride quality, testing instruments, and the impact of balloon tires. | ||
| View original record | Oy3-E-31026 -2- March 10, 1926 Am inclined to think from recent experiences that a Packard, for instance, rides better with Watson Stabilators, Gabriel Snubbers or some other rather "rough" device… | ||
| Scan103 | Riding quality issues with balloon tires, shock absorbers, and springs on Phantom and Silver Ghost models. | ||
| View original record | Oy3-E-31026 -3- March 10, 1926 In a recent report on the R.R.hydraulic you imply that the possibly rougher riding with the hydraulics might be offset by the ability to use balloon tires. Our… | ||
| Scan104 | Letter requesting a spare set of R.R. hydraulic shock absorbers for a trial. | ||
| View original record | Oy3-E-31026 -4- March 10, 1926 In case you have a spare set of R.R. hydraulic shock absorbers could you send them to us for a trial this summer? Yours very truly, Maurice Olley MO/E | ||
| Scan105 | Letter from the American branch discussing ride quality and suspension issues on the Phantom model. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Y3900 Oy4-E-4626 April 6th, 1926. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Phantom springing Dear Hives: Replying to your report… | ||
| Scan106 | Letter discussing the riding quality of the Phantom compared to the Silver Ghost, with a sketch. | ||
| View original record | Oy4-E-4626 -2- April 6th, 1926. Our source of complaint here (and we believe on analysis it would prove to be yours in England) is due to comparison of the Phantom with a good standard of Silver Ghost… | ||
| Scan107 | From CJ enclosing a copy of a cable from Mr. Olley regarding the New Phantom for RR of America Inc. | ||
| View original record | [Handwritten in blue ink, crossed out] HS [Handwritten in pencil] X3900 [Typed] To R. from CJ. c. to Na. c. to BY. c. to Hs. RR. of America Inc. New Phantom. I enclose herewith copy of cable I… | ||
| Scan108 | Copy of a cable discussing front spring stiffness and riding improvements on the Phantom model. | ||
| View original record | COPY OF CABLE RECEIVED IN LONDON 7th APRIL 1926 CLAUD JOHNSON ROLHEAD LONDON WE FIND RIDING A PHANTOM MAINLY AFFECTED BY THREE FEATURES TENDING TO STIFFEN FRONT SPRINGS AS COMPARED WITH OUR PRESENT… | ||
| Scan109 | Letter discussing National Advisory Committee reports on superchargers, accelerometers, and the effects of G-force on pilots. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X3900 Oy3-E-41526 April 15, 1926 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Reports of National Advisory Committee Dear Mr. Hives: You now… | ||
| Scan110 | Page 2 of a letter discussing riding comfort, the Bureau of Standards, and a report on semi-rigid airships. | ||
| View original record | Oy3-E-41526 -2- April 15, 1926 boat, or 6/10g on an automobile over a wavy road, are very disagreeable. The Bureau of Standards is hard at work on this subject, as applied to the Riding Comfort of… | ||
| Scan111 | Results of suspension tests comparing a pre 'U' series Silver Ghost to a New Phantom. | ||
| View original record | To Hs. from DA. X3900 DAL/M13.4.26. RE. SUSPENSION. X.3900 X.9410 X.8410 X.2628 Referring to Mr. Nadin's note of the 9th.inst., re. the suspension tests in Derby, I am not entirely in agreement with… | ||
| Scan112 | Improvements to the Phantom's springing system, focusing on lubrication, spring selection, and shock dampers. | ||
| View original record | To Hs. } FROM R. BY. } LE CANADEL. De. } 43900 R2/M18.4.26. c. to BJ. Wor. E. OY. c. to NA. Mr. Fuller. PHANTOM SPRINGING. X.8410 X.3900 X.235 X.4429 One or two things seem necessary to make us happy… | ||
| Scan113 | Continued note on potential causes for an issue, citing tyres, shock dampers, and springs. | ||
| View original record | contd :- -2- In nearly every case I have ever met it has been either (1) tyres too tightly pumped, (2) Hartford shock dampers, (3) unsuitable springs to the load. Any one of these can make all the… | ||
| Scan114 | Modifications to the front springs on a 12-MC chassis to improve ride comfort and reduce 'joggle'. | ||
| View original record | Oy1-E-42026 [Handwritten:] Mr Hives to note please and return [Stamped:] RECEIVED 28 APR April 20th, 1926 [Handwritten:] ap 29/26 To: Mr. Beaver Mr. Nadin (England) Mr. Bagnall Mr. Hulley Mr. Caswell… | ||
| Scan115 | Investigating frame sag, vibration, and booming issues in a long wheelbase vehicle. | ||
| View original record | Oy1-E-42026 -2- April 20, 1926. Thinking this might be an effect of frame sag due to the long wheelbase, we - (1) Disconnected the rear body bolts and removed the body shims, leaving the rear part of… | ||
| Scan116 | Test report on the effects of soft front springs on vehicle ride and steering wobble. | ||
| View original record | Oy1-E-42026 -3- April 20, 1926 J/S Test II. A pair of very soft front springs were made up. These have nothing but 3/16" plates below the main plate and an initial camber of 4-1/2" to 4-5/8". When… | ||
| Scan117 | Test report memo discussing low speed wobble, pivot-lean, and shackle arrangements. | ||
| View original record | Oy1-E-42026 -4- April 20th, 1926 We found a tendency to low speed wobble as we should expect with the great pivot-lean, but we consider from a short test (E.W.C., Knapton, and Oy.) that the riding… | ||
| Scan118 | To Mr. Nadin regarding correspondence from America about front springs. | ||
| View original record | Mr. Nadin. X3800 EP/Thn8/H21.4.26. re. Correspondence from America - Front Springs. We are instructed by BJ. to hand to you copies of the following memos:- Oy2/E/4526. Oy3/E/4526. With Blue Print… | ||
| Scan119 | Letter detailing test results on front springs, specifically the effect of the wide axle pad and front shackle inclination. | ||
| View original record | Oy2-E-4526 BJ M.H 18 APR REC'D April 5th, 1928 POST 16 APR RECEIVED Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.F.H.Royce " " " " Works Committee " " " "… | ||
| Scan120 | Effects of shackle inclination on suspension stiffness and potential modifications. | ||
| View original record | Oy2-E-4526 -2- April 5, 1926. (2) b. The shackle inclined at 21.1° (as on the Phantom) we find increases the stiffness in the first inch a further 10-1/2%. Of this we find 1-1/4% due to the drop in… | ||
| Scan121 | Letter supplement detailing the results of a spring test, including load and stiffness measurements. | ||
| View original record | Oy3-E-4526 April 5th, 1926 Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.F.H.Royce " " " " Works Committee " " " " Mr. Beaver " " " " Mr. Nadin (England) " " " "… | ||
| Scan122 | Test results for spring performance showing camber, load, and stiffness under various clipping and support configurations. | ||
| View original record | OyS-E-4526 -2- April 5, 1928 (2) As above but spring clipped to central plate representing wide axle pad. Camber Load Stiffness 2" 388 315 1" 703 332 0 1035 342 -1" 1377 395 -2" 1762 (3) Spring, not… | ||
| Scan123 | Test results and calculations for spring load, camber, and stiffness under various mounting conditions. | ||
| View original record | Oy3-E-4526 -3- April 5, 1926 (5) Spring not clipped. Supported on shackle one end. Shackle inclined approximately 20° outwards, i.e. as on Phantom (but greater angle). Camber Load Stiffness 2" 463 288… | ||
| Scan124 | Calculations confirming spring and shackle performance, including stiffness and load under different camber settings. | ||
| View original record | OyS-E-4526 -4- April 5th, 1928 (8) Confirmation of result 5 above by calculation. (30º and 21º shackles.) a. For 1" camber (assuming circular curve of spring) spring shortens by .060". b. For change… | ||
| Scan125 | Concluding page of a report comparing test results, marked as a copy. | ||
| View original record | OyS-E-4526 -5- April 5, 1925 Comparing the above results with test of item 5 above it will be seen that the agreement is fairly close. Yours very truly, COPY MO/E | ||
| Scan126 | Graph showing load and stiffness curves illustrating the stiffening effects on a front spring under various conditions. | ||
| View original record | STIFFENING EFFECTS ON FRONT SPRING DUE TO Ⓐ CLIPPING ON WIDE AXLE PAD (4.4" WIDE). Ⓑ INCLINED SHACKLE (INCLINED 21.1° TO VERTICAL). SPRING TESTED WITH ENDS FREE (No Cup) EFFECT OF WIDE AXLE PAD EFFECT… | ||
| Scan127 | The characteristics and improved riding quality of a new set of front springs for the Phantom car. | ||
| View original record | Oy10-E-4526 April 5th, 1926 Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr. F. H. Royce " " " " Works Committee " " " " Mr. Beaver " " " " Mr. Nadin (England) " " "… | ||
| Scan128 | Steering improvements and front spring stiffness for the Phantom model, including spring plate specifications. | ||
| View original record | Oy10-E-4526 -2- April 5, 1926 We have had no steering wobble with standard R.R.front shock absorbers set at 30 lbs. and 33x5-3/4 tires inflated to 33 lbs. The steering generally seems improved. We… | ||
| Scan129 | Development and use of accelerometers and seismographs for measuring car riding qualities. | ||
| View original record | To OY. From Hs/Rm. V3900 Hs/Aml/LG21.4.26. SUSPENSION. V3900 X8410 X4564 We were very interested in your remarks re. Suspension. We thank you for the sketch of the Accelerometer given in CY3/E31626.… | ||
| Scan130 | Front spring tests for the 12-MC model, detailing modifications and performance outcomes. | ||
| View original record | Oy2-E-42226 X3800 April 22nd, 1926 To: Mr. Beaver Mr. Nadin Mr. Bagnall Mr. Hulley Mr. Caswell Mr. Southern Mr. Burton Mr. Knapton From: Mr. Olley EXPERIMENTAL REPORT Front Springs on 12-MC… | ||
| Scan131 | Cabled message about improvements to car ride and steering, and the construction of experimental car MX-1. | ||
| View original record | Oy2-E-42226 -2- April 22, 1926. We have cabled Na.April 21st as follows:- "Referring my cable April Fifth further improvement making car ride like Silver Ghost achieved by shackling springs at rear… | ||
| Scan132 | Transcribed cable from Mr. Olley regarding testing of shackle springs and the necessity of a radius rod. | ||
| View original record | Hs. from Na. X3800 Na1/W22.4.26. Below I give a copy of a cable received from Mr. Olley yesterday :- "HAVE YOUR CABLE APRIL NINETEENTH WE FIND ON TWELVE MC SHACKLING SPRINGS AT REAR HAS NO… | ||
| Scan133 | Cable from Mr. Olley regarding car ride improvements by shackling the rear springs. | ||
| View original record | Hs. from Na. Y3900 Na3/W22.4.26. I give below a cable received from Mr. Olley:- "REFERRING MY CABLE APRIL 10th FURTHER IMPROVEMENT MAKING CAR RIDE LIKE SILVER GHOST ACHIEVED BY SHACKLING SPRINGS AT… | ||
| Scan134 | Comparing the suspension and ride quality of the Phantom and Silver Ghost models. | ||
| View original record | To R. from Hs. c. to BJ. RG. c. to E. DA. c. to BY. Wor. c. to Na. X3900 Hs2/LG24.4.26. PHANTOM SUSPENSION. X.9410 X.3900 X.8410 X.2628 We have obtained several pre front brake Silver Ghost cars from… | ||
| Scan135 | Conclusion from a test on the springing of the 20 HP model. | ||
| View original record | contd :- -2- various combinations of springing. This test shows up clearly that customers satisfaction with the 20 HP. springing is justified. Hs. | ||
| Scan136 | Effects of shackling the rear spring on vehicle riding quality. | ||
| View original record | Oy2-E-42826 X3900 April 28, 1926 To: Mr. Southern cc Mr. Hives Mr. Nadin Mr. Beaver Mr. Hulley Mr. Caswell From: Mr. Olley Re Springing Replying to yours of April 26th I cannot understand why… | ||
| Scan137 | Analysis of spring stiffness, horizontal tension, and twisting effects on vehicle ride comfort. | ||
| View original record | -2- The horizontal tension from the original inclined shackle is about 250 to 300 lbs. This produces an appreciable change in the spring stiffness, but it would seem that 20 lbs. horizontal thrust… | ||
| Scan138 | Clarifying a telegram about spring stiffness ratings and testing for the Phantom suspension. | ||
| View original record | To Hs. from DA. X3900 DA2/M29.4.26. PHANTOM SUSPENSION. X.8410 X.9410 X.3900 We understand that there was some doubt about the meaning of our telegram re. spring rating. We were going on R's telegram… | ||
| Scan139 | Letter containing a summary of topics related to spring suspension and shock absorbers. | ||
| View original record | HS X3900 E25-253 A7328/9 in safe BJ Oy1-E-5826 May 8th, 1926. POST RECEIVED 20 MAY 1926 Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (copy for attention of Mr.F.H.Royce " " " " Mr.E.W.Hives✓… | ||
| Scan140 | The stiffening effects of a wide axle pad and inclined shackle on springs. | ||
| View original record | Oy1-E-5826 -2- May 8th, 1926. I. Stiffening effect of wide axle pad, inclined shackle etc. a. Our note that the Phantom springs were 13% stiffer than our own referred to the fact that the Phantom like… | ||
| Scan141 | Technical report detailing adjustments and improvements to vehicle suspension springs. | ||
| View original record | Oy1-E-5826 -3- May 8th, 1926 I.c (cont'd.) This effect is illustrated on attached chart. d. Rear Springs. The rear springs we are making here have the original stiffness standardized after the war,… | ||
| Scan142 | Modifications to suspension shackles and seat cushions to improve vehicle ride quality. | ||
| View original record | Oy1-E-5826 -4- May 8th, 1928. II. (cont'd.) d. With these same front springs, standard pre-front-brake shackles were fitted at the rear end. The riding and steering are considered to be still further… | ||
| Scan143 | Spring stiffness, sprung loads, and stamping inconsistencies. | ||
| View original record | Oy1-E-5826 -5- May 8th, 1926 III. Very soft front springs. All the later results on the above car have been obtained with front springs mentioned above having a stiffness when clipped of 340 lbs./in.… | ||
| Scan144 | The performance of spring gaiters and hydraulic shock absorbers. | ||
| View original record | Oy1-E-5826 -6- May 8th, 1926 V. (cont'd.) We obtain the latter from the average of the up and down readings through a range of one inch either side of the normal loaded position. This gives a figure… | ||
| Scan145 | Valve spring settings, friction tests on a Silver Ghost, and spring leaf modifications. | ||
| View original record | Oy1-E-5826 -7- May 8, 1926 VII. (cont'd.) However we found that with the valve springs we have been using we get 450 lbs. maximum pull on the Lovejoy strap. We replaced the valve spring by the… | ||
| Scan146 | Graph showing the effect of a 20° inclination of a spring shackle on load and stiffness. | ||
| View original record | EFFECT OF 20° INCLINATION OF SPRING SHACKLE LOAD LBS 2000 1800 1600 1400 1200 1000 800 600 400 200 0 DEFLECTION INS. 0, 1", 2", 3", 4", 5", 6" STIFFNESS LBS/IN 400 300 200 100 Graph Lines: LOAD WITH… | ||
| Scan147 | Covering memo regarding spring suspension and re-distribution of weight, attaching a letter received from America. | ||
| View original record | EP A.H. Da. R. →EP (for Works Committee) RECEIVED 17 MAY 1926 X3900 CG/C14.5.26. Re Spring Suspension. Re-distribution of Weight. ------ I/We attach hereto copy of letter which we have this morning… | ||
| Scan148 | Letter discussing spring suspension and the re-distribution of weight in motor cars. | ||
| View original record | Oy1-E-5426 May 4th, 1926. To: Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.F.H.Royce " " " " Mr.Day " " " " Mr.Elliott " " " " Mr.Bailey) Dear Sir: Re Spring… | ||
| Scan149 | Vehicle dynamics, discussing moment of inertia, spring frequency, and the application of Rowell's formula. | ||
| View original record | Oy1-E-5426 -2- May 4th, 1926 I. (b) This car however (to judge by the spring cambers) was much heavier than the standard Packard sedan. II. Mock's paper in the S.A.E.Journal for July last, (page 37)… | ||
| Scan150 | Determining the moment of inertia for various car body types and the effects of weight distribution on spring suspension. | ||
| View original record | Oy1-L-5426 -3- May 4th, 1926 III. (b) We have been considering whether we ought not to take off the axles and swing cars with each of our 6 typical body types as a pendulum from a beam in the roof in… | ||
| Scan151 | Cablegram regarding the testing of a new front axle and the despatch of shock absorbers. | ||
| View original record | Form 2B. (7/25.) COMMERCIAL CABLES X3900 HS Office Stamp: THE COMMERCIAL CABLE CO. CENTRAL STN. 18 MAY. 1926 VIA EDINBURGH Stamp: 15, EDMUND ST. BIRMINGHAM. CENTRAL 2084 The following CABLEGRAM… | ||
| Scan152 | Delay to a new front axle and the despatch of shock absorbers. | ||
| View original record | NEW FRONT AXLE | ||
| Scan153 | Cable to be sent to the U.S.A. regarding a delay in the despatch of shock absorbers. | ||
| View original record | To D/BP. from Hs/Rm. X/3900 Hs/Rnl/LG19.5.26. We should be glad if you will cable the following information to OY. in the U.S.A. :- "FORTNIGHT BEFORE NEW FRONT AXLE ON ROAD STOP SHOCK ABSORBERS… | ||
| Scan154 | For the Works Committee regarding spring suspension, enclosing a letter and blueprints from America. | ||
| View original record | ->Hs. WE. (For Works Committee) X3900 09/020.5.26. Re Spring Suspension. Enclosed herewith is copy of letter (reference Oyl/Z5826) which we have this morning received from America. C. Enc. Letter &… | ||
| Scan155 | Results of front spring rating tests carried out to address suspension complaints. | ||
| View original record | V3900 Hs/RmL/T27.5.26. EXDL. BELULAX. To R. from Hs/Rs. c. to BJ. Wor. c. to Rg. E. c. to Da. By. c. to CV. FRONT SPRING RATING TESTS. V8410 V3900 We have carried out a number of front spring rating… | ||
| Scan156 | Spring testing methodology, comparing oscillation versus gradual loading and analyzing spring ratings. | ||
| View original record | Expt. Report. (Contd) -2- Hs/Hal/T27.5.26. the same as far as possible when pulled up by the same individual, is indicated in Graph 9. The majority of the tests were conducted by allowing the spring… | ||
| Scan157 | Analysis of shackle inclination and pad variations on spring performance and torsional resistance. | ||
| View original record | Contd. -3- Hs/RmL/T27.5.26. deflection as obtains with a narrow pad. Briefly, pad variations within the limit used by R.R. have no effect on the springs other than to increase their torsional… | ||
| Scan158 | The performance characteristics and testing of leaf springs, including the 'Woodhead' type. | ||
| View original record | Contd. -4- Hs/RmL/T27.5.26. We consider that the falling off in rating due to the inward inclination of the shackle can be completely accounted for by the horizontal compression set up in the spring.… | ||
| Scan159 | Test report on front spring ratings with various configurations and loading conditions. | ||
| View original record | Attached to :- Hs/RmL/T27.5.26. FRONT SPRING RATING TESTS. α Wide axle pad, 21° forward shackle. Bump loading. β Narrow axle pad, 21° forward shackle. Bump loading. δ Wide axle pad, Vertical shackle.… | ||
| Scan160 | Two graphs comparing spring rating tests, one showing the effect of shackle angle and the other comparing spring systems. | ||
| View original record | TOP GRAPH: (1) SPRING RATING TESTS (β) AND (α). EFFECT OF SHACKLE ANGLE. WIDE PADS. Y-AXIS: RATING LBS/IN. X-AXIS: TOTAL LOAD LBS. LEGEND: α - 21° FORWARD SHACKLE β - VERTICAL SHACKLE. ANNOTATIONS:… | ||
| Scan161 | Blank page with a red date stamp in the bottom right corner. | ||
| View original record | RECORD ROOM, 27. MAY 26 DERBY. | ||
| Scan162 | Two graphs illustrating spring rating tests, comparing shackle angle and pad width. | ||
| View original record | TOP GRAPH: (2) SPRING RATING TESTS (δ) AND (€) EFFECT OF SHACKLE ANGLE NARROW PADS Y-AXIS: RATING LBS/IN X-AXIS: TOTAL SPRING LOAD. LBS. LEGEND: δ = 21° FORWARD SHACKLE € = VERTICAL SHACKLE… | ||
| Scan163 | Two graphs comparing spring rating tests, one showing the effect of pad width and the other comparing different spring systems. | ||
| View original record | (5) SPRING RATING TESTS. (δ) AND (α) EFFECT OF PAD WIDTH 21° SHACKLE RATING LBS./IN. TOTAL LOAD. LBS. α = WIDE PAD δ = NARROW PAD WORKING RANGE 1100 LBS. (6) SPRING RATING TESTS. (α) AND (E)… | ||
| Scan164 | Two graphs showing results of spring rating tests, one for internal friction and one for independent test agreement. | ||
| View original record | (7) SPRING RATING TESTS (E) AND (E II) EFFECT OF INTERNAL FRICTION. WORKING RANGE RATING LBS/IN TOTAL SPRING LOAD. LBS. GRADUAL BUMP NARROW PADS VERTICAL SHACKLE E II E (a) SPRING RATING TESTS. (α)… | ||
| Scan165 | Graph of spring rating tests showing the effect of internal friction under different loading conditions. | ||
| View original record | (8) SPRING RATING TESTS (B) AND (B II). EFFECT OF INTERNAL FRICTION. WIDE PAD. VERTICAL SHACKLE. SPRING RATING LBS/IN. TOTAL SPRING LOAD LBS. B II = GRADUAL LOADING B = BUMP LOADING B II B | ||
| Scan166 | Graph from spring rating tests showing the effect of deflection due to shackle movement. | ||
| View original record | (10) SPRING RATING TESTS. Y I Effect of Deflection due to Shackle movement SPRING RATING LBS / IN TOTAL SPRING LOAD. LBS Corrected Bump Loading Narrow Pad Shackle 10° Inward. | ||
| Scan167 | Graph showing the variation of shackle angle against compression for a narrow pad. | ||
| View original record | (11P). VARIATION OF SHACKLE ANGLE. Narrow Pad. 10° Inward Shackle. YI SHACKLE ANGLE. COMPRESSION IN INCHES 40° 30° 20° 10° 0 0 1 2 3 4 5 6 | ||
| Scan168 | Graph plotting spring rating against total load to show the effect of deflection due to shackle movement. | ||
| View original record | (13) SPRING RATING TESTS. (E) Effect of Deflection due to Shackle movement SPRING RATING LBS/IN. TOTAL LOAD LBS 450 400 350 300 250 0 300 600 900 1200 1500 1800 Corrected Bump Loading Narrow Pad… | ||
| Scan169 | Graph from a spring rating test comparing a standard spring with Woodhead's special spring. | ||
| View original record | (13) SPRING RATING TESTS. (η & α) COMPARISON OF SPRINGS Wide Pads, 21" Shackles Mean Curve η = WOODHEAD'S SPECIAL SPRING α = 1st SS STANDARD SPRING AXIS LABELS: Vertical: SPRING RATING LBS/INS… | ||
| Scan170 | The reverse of a document showing a red ink stamp from the Print Room. | ||
| View original record | ROLLS-ROYCE LIMITED PRINT ROOM, 27. MAY 26 DERBY. | ||
| Scan171 | Letter from America to Derby discussing road trials and measurements of different front spring shackle configurations. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy10-E-6126 June 1st, 1926 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Front Springs Dear Mr. Hives: We should be interested to know whether… | ||
| Scan172 | Riding quality and an enclosed document received from America. | ||
| View original record | R. ->Hs. De. Y3900 C1/028.9.26. Re Riding Quality. ----- I enclose herewith copy of Oyl-B-91526 which we have received from America this morning. C. [Handwritten annotations] 3-30 28/9/26 | ||
| Scan173 | Letter discussing spring suspension, riding quality, and moment of inertia, referencing external research articles. | ||
| View original record | Oy1-E-91526 September 15, 1926 Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.F.H.Royce " " " Mr.E.W.Hives " " " Mr.B.I.Day) Dear Sir: Re Riding Quality May we refer… | ||
| Scan174 | Letter concerning vehicle riding quality, specifically front axle oscillations and tests with different shock absorbers. | ||
| View original record | X3900 Oy5-E-11826 RECEIVED NOV 15 1926 Hives November 8th, 1926 Mr. Haldenby, Rolls-Royce, Ltd., Derby, England. (Copy for attention of Mr. Hives) Dear Mr. Haldenby: Re Riding Quality Probably the… | ||
| Scan175 | Letter discussing issues with friction and hydraulic suspension systems and potential improvements. | ||
| View original record | Oy5-E-11826 -2- November 8th, 1926 The R.R. friction type is good until the car reaches its tramping speed (about 50 m.p.h. if the wheels are out of balance or out of truth) when a violent tramping is… | ||
| Scan176 | Comparing the riding quality and dynamics of a Silver Ghost Cabriolet and a Phantom Sedan. | ||
| View original record | E DA COPY: X3900 OY13-E-111026. X8410 X5410 To R. from OY. c. to Hs. RE. RIDING QUALITY. We have recently done some interesting work in comparing two cars at the Works with regard to their natural… | ||
| Scan177 | Comparison of suspension characteristics, oscillation, and pitching speed between different car models like the Silver Ghost and Phantom. | ||
| View original record | contd :- -2- and of the Silver Ghost 4080 lbs. this result surprised us at first. But if one draws a circle of 4 ft. radius from the c.g. on the outline drg. of the Silver Ghost car, one can see that… | ||
| Scan178 | Technical analysis of vehicle suspension characteristics, including pitching speeds, spring rates, and axle pad effects. | ||
| View original record | contd :- -3- (5) The ratio k²/ab (for the sprung weight only) on the two cars we were testing ran from .455 to .53, the latter when a 200 lbs. trunk was added at the back. Corresponding pitching… | ||
| Scan179 | Spring stiffness tests and their effect on vehicle ride quality. | ||
| View original record | contd :- -4- (12) This gave us a total spring stiffness of 32-1/2% of the normal load. We made a new pair of front springs in which the stiffness when clipped to the axle was 30% of the normal load.… | ||
| Scan180 | Letter to F.H. Royce comparing the riding quality and radius of gyration of a Silver Ghost and a Phantom. | ||
| View original record | X3900 C. to E. " " D.A. Oy13-E-111026 November 10, 1926. Mr. F. H. Royce, Rolls-Royce, Ltd., London, England. Dear Mr. Royce: Re Riding Quality We have recently done some interesting work in comparing… | ||
| Scan181 | Technical analysis comparing suspension characteristics and weight distribution of the Phantom and Silver Ghost models. | ||
| View original record | Oy13-E-111026 -2- November 10, 1926 (2) The C.G. (without passengers or spare wheels) was 5" above the frame on the Phantom and 4" above frame on Silver Ghost. (3) The radius of gyration squared of… | ||
| Scan182 | Analysis of vehicle pitching speeds and the factors that influence them, such as springs, weight distribution, and wheelbase. | ||
| View original record | Oy13-E-111026 -3- November 10, 1926 (4) We conclude that the larger car requires much softer springs than the smaller car, for a given pitching speed because its radius of gyration is less in… | ||
| Scan183 | Spring stiffness tests and their effect on vehicle ride characteristics. | ||
| View original record | Oy13-E-111026 -4- November 10, 1926 (11) Effect of wide axle pad. We inspected the springs off the l.h. drive Phantom referred to, with a heavy clip representing the wide axle pad on the new type… | ||
| Scan184 | Letter from the American to the British office regarding steering and front spring stiffness. | ||
| View original record | x3900 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy10-E-111126 November 11, 1926. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Re Steering We notice that you are doing a… | ||
| Scan185 | Front spring stiffness, negative camber, U-bolts, and load stresses. | ||
| View original record | Oy10-E-111126 -2- November 11, 1926. The variation in stiffening effect comes I think from (a) Relative flatness of the short leaf, (b) Degree of pull up on the U bolts (c) Position of spring when… | ||
| Scan186 | Front axle and wheel suspension issues like 'tossing', 'tramping', and 'wobble', and proposing potential remedies. | ||
| View original record | To OY. from Hs/Rn. c. to Hy. X3900 Hs/Rn3/LG16.11.26. X3900 X457 'tossing' and jouncing' of front axles on 4-wheel brake cars; we are not familiar with the terms used, however we conclude that the… | ||
| Scan187 | Letter from the American office to Derby discussing riding quality issues, specifically front axle tramping and shimmy. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X.3900 Oy2-E-12226 December 2nd, 1926. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. (Copy for attention of Mr. Haldenby) Dear Mr. Hives: re… | ||
| Scan188 | Letter analysing the moment of inertia (M.I.) of various wheel and tire combinations to investigate shimmy. | ||
| View original record | Oy2-E-12226 -2- December 2, 1926 Your note about the decrease in shimmy with a heavier inner tube made me think that it would be well to find the M.I. of our complete 33 x 6.75 wheel and tire, as we… | ||
| Scan189 | Front axle performance, particularly concerning braking, steering swerve, and diving. | ||
| View original record | X3900 To CY. From Hs/Rm. c. HY. Hs/Rm2/T21.12.26. X8410 X3861 Y8470 FRONT AXLE. With reference to yours ref. CY2-E-12826 of the 8th inst. :- (1) We have not found that cars swerve to the right… | ||
| Scan190 | Technical memorandum discussing steering and suspension issues like wheel wobble and shimmy, and proposing potential solutions. | ||
| View original record | Contd. -2- Hs/Rm2/T21.12.26. the cross steering tube, and that you do not try to fit front springs of the maximum flexibility. (2) We have never experienced a case of tramping that was not connected… | ||
| Scan191 | Solutions for steering wobble, tramping, and brake squeak issues. | ||
| View original record | Contd. -2- Ha/Rs2/T21.12.26. are very susceptible to variation in the carcass stiffness. You should have no spring controlled movement in the cross steering tube, just a few thousandths of an inch to… | ||
| Scan192 | Letter from the American office to Derby, England, offering comments on spring suspension, specifically regarding bouncing frequency. | ||
| View original record | 43900 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy1-E-12627 January 26th, 1927 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. (Copy for the attention of Mr. Haldenby.) Dear Mr. Hives: Re… | ||
| Scan193 | Vehicle suspension dynamics, including deflection, rebound leaves, and air springs. | ||
| View original record | Oy1-E-12627 -2- January 26th, 1927 (1) p.25. We explain the observed fact that the frequencies are always higher than those given by considering the deflection only, by the effect illustrated in the… | ||
| Scan194 | Suspension softness, spring ratings for the 40/50 model, and a request for information on Hofmann air springs. | ||
| View original record | Oy1-E-12627 -3- January 26, 1927. (3) softness in the suspension was the one thing that we could always have plenty of. But your article makes me think that they may have advantages. Shall we get you… | ||
| Scan195 | Calculation of spring stiffness and time of complete swing for two different mass-spring system configurations. | ||
| View original record | Case I DEFLECTION UNDER LOAD. SPRING STIFFNESS (RATING) = W/d TIME OF COMPLETE SWING = 2π * sqrt(disp / acc) = 2π * sqrt(x / ((W*x/d) / (W/g))) = 2π * sqrt(d/g) Case II DEFLECTION UNDER LOAD. SPRING… | ||
| Scan196 | The design and stress calculations for the main plate of a road spring. | ||
| View original record | H O from Gy ROAD SPRINGS. Y3900 Obviously, to get the best use from a strip of steel in bending, it should be bent equally throughout its length. In practice this implies circular bending. Therefore… | ||
| Scan197 | Calculations for stress, radii, and load on back plates for a spring assembly. | ||
| View original record | - 2 - Back Plates. Suppose we decide that 100,000 lbs/in² is a good max. stress for all plates and that the plates will be selected from three sizes of stock, .250", .218", and .187". Neglecting the… | ||
| Scan198 | Page of calculations for spring load, section moduli, and stiffness. | ||
| View original record | - 3 - W = W₁ + W₂ = M/L₁ + M/L₂ = (L₁+L₂)/(L₁ L₂) M If L₁ = 21" W = .092 M L₂ = 22¼" Or, for each plate W = .092 x f (bt²/6) Say b = 2". bt²/6 = for .285 plate - .027 } - Main Plate. .250 - .0208}… | ||
| Scan199 | Stress calculations, load characteristics, and manufacturing considerations for leaf springs. | ||
| View original record | - 4 - Stress = Et/2Rx = Et/2Ro Hence the load per plate can be found as before. Finally, the numbers of each thickness of plate are selected by trial as given below. Note (1). It is found that the… | ||
| Scan200 | Calculation sheet detailing stress, load, and deflection data for various plate thicknesses. | ||
| View original record | - 5 - Plate thickness. Bend to radius. Desired initial radius. Stress 1/2" neg. (lbs/in²) Load at cent. bolt. 1/2" neg. (lbs) Final stress. 3.1" neg. (lbs/in²) Increase in stress. 1/2" neg. to 3.1"… | ||
| Scan201 | The analysis and calculation of leaf spring plate lengths, stiffness, and stresses. | ||
| View original record | - 6 - Plate Lengths. Our first trouble was that the spring when supposed to be flat actually bent thus:- We were working on the old Sheldon Co. plate lengths. Also the stiffness was much higher than… | ||
| Scan202 | Calculations for loads, stresses, and bending moments on unclipped and clipped plates with associated diagrams. | ||
| View original record | - 7 - Or, more conveniently one can take loads and stresses at ½" neg. given in above table and increase the load in the required proportion, thus:- Unclipped. [Diagram shows a beam with a central… | ||
| Scan203 | Page of calculations and design considerations for vehicle leaf springs. | ||
| View original record | - 8 - .218 plates. stress - 81,420 lbs/in² Modulus - .0158 Bending Moment - 970 lbs.ins. Overhang - 970/615 = 1.580" .187 plates. stress - 63,030 lbs/in² Modulus - .0117 Bending moment - 738 lbs.ins.… | ||
| Scan204 | The design and manufacturing process for leaf springs, including diagrams of the leaf ends. | ||
| View original record | - 9 - APPROX .010" The tapered portion at the end has been made tangential to the curve in forming the leaf thus:- [Diagram 1 Labels] TAPER RADIUS TANGENT About 2" RAD. CURVE ON END [Diagram 2 Labels]… | ||
| Scan205 | Spring rust-proofing, quenching plates, and stiffness measurement. | ||
| View original record | - 10 - If the gaiters receive attention with a syringe every 2000M. or so, the springs stay clean, but when neglected, as they often are, springs appear to rust worse with gaiters than without. We… | ||
| Scan206 | Test results and stiffness calculations for an 1100 lb. front spring. | ||
| View original record | - 11 - The three loads for 1" above normal position. normal position. 1" below normal position. are first taken, moving continuously downwards. Then the spring is taken about 1" to 2" below the lowest… | ||
| Scan207 | Specification for Front Spring No. A-9809. | ||
| View original record | SPRING SPECIFICATION A9809 New Particulars for 1150 lb. Front Spring (1701 Series). Front Spring No. A-9809 - Revised Oct. 9/25. Approx. Free Camber (unclipped) - 3.250 Flat load (unclipped) - 920… | ||
| Scan208 | Spring specification for an 1100 lb. Front Spring (1701 Series), No. A-8546. | ||
| View original record | 7139 A SPRING SPECIFICATION A8546 Particulars for 1100 lb. Front Spring - (1701 Series). Front Spring No. A-8546 Approx. Free Camber (unclipped) 3.250" Flat Load (unclipped) - 945 lbs. Stiffness… | ||
| Scan209 | Page of faint handwritten numerical calculations with a library stamp. | ||
| View original record | 575 3750 4125 3720 405 4125 31 1200 3720 ROLLS-ROYCE. LIMITED PRINT ROOM 7 JUL 1927 | ||
| Scan210 | Letter to Mr. Royce regarding riding quality, comparing oscillation frequencies and the center of gravity of two different car models. | ||
| View original record | Oy13-E-111026 November 10, 1926. extra Mr. F. H. Royce, Rolls-Royce, Ltd., London, England. Dear Mr. Royce: Re Riding Quality We have recently done some interesting work in comparing two cars at the… | ||
| Scan211 | Comparison of weight distribution and suspension dynamics between the Phantom and Silver Ghost models. | ||
| View original record | Oy13-E-111026 -2- November 10, 1926 (2) The C.G. (without passengers or spare wheels) was 5" above the frame on the Phantom and 4" above frame on Silver Ghost. (3) The radius of gyration squared of… | ||
| Scan212 | Analysis of car pitching speeds and the effects of spring softness, weight distribution, and wheelbase on vehicle dynamics. | ||
| View original record | Oy13-E-111026 -3- November 10, 1926 (4) We conclude that the larger car requires much softer springs than the smaller car, for a given pitching speed because its radius of gyration is less in… | ||
| Scan213 | The effects of wide axle pads and spring stiffness on vehicle suspension and riding comfort. | ||
| View original record | Oy13-E-111026 -4- November 10, 1926 (11) Effect of wide axle pad. We inspected the springs off the l.h. drive Phantom referred to, with a heavy clip representing the wide axle pad on the new type… | ||
| Scan214 | Letter from The Stevens Products Co. offering a complimentary set of Hofmann Air Springs for experimentation. | ||
| View original record | HOFMANN AIR SPRING RIDE ON AIR FOR AUTOMOBILES, TRUCKS, AEROPLANES, MOTOR CYCLES, AND MANY OTHER APPLICATIONS. THE PRODUCT OF TEN YEARS RESEARCH TO DEVELOP A FRICTIONLESS AIR SPRING. THE STEVENS… | ||
| Scan215 | Responding to a letter about spring suspension, discussing 'pitching', the Phantom model, and the rating of different spring types. | ||
| View original record | To OY. from Hs/Rm. X 3900 Hs/Rm3/LG7.2.27. √3900 x4000 x8+10 RE. SPRING SUSPENSION. With reference to your letter of the 26th.ult. (a) We were very interested in your remarks on suspension,… | ||
| Scan216 | Maximum stiffness and buffer options for chassis springs destined for Australia. | ||
| View original record | To EY. from R. c. to BJ. Hs. X3900 R4/M24.6.27. RE. CHASSIS SPRINGS FOR AUSTRALIA. X.8990 X.8410 X.3900 In reply to your EY11/H22.6.27., I consider that 20% stiffer springs are the maximum stiffness… | ||
| Scan217 | Notes on riding quality, focusing on the distribution of mass and oscillation frequencies. | ||
| View original record | Oy9-E-92327 V3900 August 28, 1927. NOTES ON RIDING QUALITY Distribution of Mass. The classical assumption that all bodies supported on springs having the same deflection, oscillate at equal… | ||
| Scan218 | Assumptions on tire deflection and its effect on oscillation frequencies and riding quality, with a comparison to the Lancia Lambda. | ||
| View original record | Oy9-E-82327 -3- August 25, 1927. The particular example of this is the Lancia Lambda, which has 9" deflection of the front springs, compared with our 5-3/4", and stiffer shock absorber action than we… | ||
| Scan219 | Technical analysis of vehicle oscillation, focusing on improving riding quality by addressing bouncing and pitching. | ||
| View original record | Oy9-E-S2327 -2- August 23, 1927. Meanwhile, on the 40/50 K² is equal to about .45 a b to .55 a b, depending on the body and the loading, and being lower (and therefore worse) for the longer wheelbase.… | ||
| Scan220 | Notes and calculations on riding quality, showing various cases of oscillation and spring dynamics. | ||
| View original record | RIDING QUALITY DRAWING NO. A10949 SEE ALSO THE FOLLOWING OPERATION DRAWINGS Case I DEFLECTION d SPRING STIFFNESS S M TIME OF SWING = 2π√(M/S) Case II DEFLECTION d 2M x SPRING STIFFNESS S TIME OF SWING… | ||
| Scan221 | Letter regarding notes on inertia testing and results from swinging a 20 hp closed car. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X3900 Oy8-E-B2327 August 25, 1927. Mr. E. W. Hives, Rolls-Royce Ltd., Derby, England. Re Riding Quality Dear Mr. Hives: I left with Mr. Robotham my… | ||
| Scan222 | Comparison and bumper test of American front road springs versus standard Firths springs for the Phantom model. | ||
| View original record | To R. from Hs/AJL. c. to BJ. Wor. c. to E. DA. c. to OY. BY. X3900 Hs/AJL1/LG13.9.27. PHANTOM. AMERICAN FRONT ROAD SPRINGS. X4429 We have received a pair of American front road springs as fitted to… | ||
| Scan223 | Failure test results of Firths Silco Manganese springs and comparing them to American springs. | ||
| View original record | contd :- -2- In conjunction with these tests we have tested a pair of Firths Silco Manganese springs of the same loading : these failed after running as follows :- O.S. spring (1150 lbs.) after 21… | ||
| Scan224 | Making American-style front road springs for the Phantom model. | ||
| View original record | From Wor. Hs. X3900 Wor4/T.24-9-27. Phantom. American Front Road Springs. BJ. is anxious to settle the question of making springs similar to RR. of America. Hs. informed us the other day that R. had… | ||
| Scan225 | Requesting the return of notes on Spring Manufacture for submission to Firths. | ||
| View original record | To DA. from Hs/Rm. /3900 Hs/Rm2/LG30.9.27. SUSPENSION. X4429 Will you please return OY's notes on Spring Manufacture which I left with you on our last visit to WW. We should also like to have any… | ||
| Scan226 | Proposal to change the material for front road springs from Chrome Vanadium to Silico Manganese steel. | ||
| View original record | RR 755 REVISED (10H) (DE 648 9-12-26) BM. 2/1187. X3900. STANDARDISATION of CHASSIS PARTS. Description of Parts. MATERIAL FOR FRONT ROAD SPRINGS. Origin. To improve reliability and reduce cost.… | ||
| Scan227 | Manufacture of road springs by an external company, Firth's, for testing and comparison. | ||
| View original record | Hs/Rn. from DA. X3900 DA1/M3.10.27. SUSPENSION. X.3900 X.8410 X.4429 In reply to Hs/Rn2/LG30.9.27., we return herewith Mr. Olley's notes on road springs. Mr. Royce wishes us to get some springs made… | ||
| Scan228 | Increased 'pitching' caused by American type front springs and potential solutions. | ||
| View original record | To OY. from Hs/Rm. Y3900 Hs/Rm2/LG28.10.27. AMERICAN FRONT SPRINGS. X 840 We have now had a considerable amount of experience with the American type frent springs on the road. We believe that our… | ||
| Scan229 | Continued memo discussing car damping and seeking feedback on the Stutz car. | ||
| View original record | contd :- -2- a more controlled car at high speeds by this means than with the present type of damping. We are at the present moment contemplating purchasing a Stutz car this being the best American… | ||
| Scan230 | Concerns about the weight and performance of car road springs. | ||
| View original record | To BY. from Hs/Rm. c. to DA. c. to Wor. Y3900 Hs/Rm2/LG14.11.27. ROAD SPRINGS. Y3900 X8410 X8540 We are very concerned about the weights of our car road springs. The first test which brought the… | ||
| Scan231 | Spring design, discussing weight reduction, material choices, and discrepancies with spring suppliers. | ||
| View original record | contd :- -2- thick leaf cantilever was eliminated on the rear of the 40/50. Therefore the spring makers have gratuitously added 17 1/4 lbs. to the car weight with no justification because it is… | ||
| Scan232 | Weight of springs and the goal of reducing axle weight. | ||
| View original record | contd :- -3- Increase in weight of stiffer spring over standard spring 10.5% whereas we consider we ought to be able to decrease the weight quite 20%. As we are fighting for a few pounds off the axle… | ||
| Scan233 | Letter discussing issues and solutions for improving vehicle riding quality. | ||
| View original record | X2900 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. POST RECEIVED 28 NOV 1927 RECEIVED NOV 1927 OY9.R.11.15.27 November 15th, 1927. Mr. Robotham, Rolls Royce Ltd., Derby, England. Dear "RM": RE:… | ||
| Scan234 | Letter from Maurice Olley comparing design figures (K2/AB ratio) for the 20 horse and Phantom models. | ||
| View original record | - 2 - I feel sure you will find that the average 20 horse is K2/AB = to about .65 to .75, whereas the Phantom particularly 150" wheelbase is K2/AB = to about .45 to .5 and I believe if you establish… | ||
| Scan235 | Pushing forward an order for an extra pair of American type front springs for a Sports Car. | ||
| View original record | Hs. Y30.00 BY6/G.22.11.27. SPORTS CAR. AMERICAN TYPE FRONT SPRINGS. Messrs. Firth & Sons inform me that they are pushing forward an extra pair of springs to enable us to fit an extra pair of American… | ||
| Scan236 | Technical memorandum discussing vehicle suspension dynamics, specifically the ratio K²/ab, to minimize pitching in various car models. | ||
| View original record | To R. From Hs/Rn. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X3900 Hs/Rn3/LG2.12.27. SUSPENSION. X5440 X8410 X3900 In OY13/E111026, a figure was given for the ratio K²/ab of the Phantom and… | ||
| Scan237 | Potential improvements to vehicle suspension, wheelbase, and engine size. | ||
| View original record | contd :- -2- is on the Lancia transferred to the sprung weight in the optimum position for increasing K². 4 Independent rear wheel suspension has the same advantages. Reducing the wheelbase of the… | ||
| Scan238 | Differences between blueprint specifications and a supplied sample of American main springs. | ||
| View original record | RECEIVED DEC 29 1927 Hs. C. Wcr. X3900 BY2/G.28.12.27. AMERICAN MAIN SPRINGS. Referring to my recent visit to Messrs. Firths to discuss with Mr. Wortley Fawcett and Mr. Stansfield the question of the… | ||
| Scan239 | Instructions for modifying three pairs of springs and observations on their stiffness, camber and hardness. | ||
| View original record | - 2 - BY2/G.28.12.27. In addition, as pointed out, the stiffness of the spring was altogether wrong, and the initial camber was not to drawing. In view therefore of the fact that these differences… | ||
| Scan240 | Exceptional suspension and handling characteristics of a Phantom sports car. | ||
| View original record | X3900 OY. from Hs/Rm. Hs/Rm4/LG31.12.27. SUSPENSION. X3900 X8440 7877-4 We have swung a Phantom sports car. We find that k²/AB for this car is .43. This sports car is agreed by everyone to be the best… | ||
| Scan241 | Diagram and calculation of a vehicle's weight distribution, center of gravity, and periodic swing time. | ||
| View original record | PT OF SUPPORT 11.33' .950" C of G 27.6" OF WHEEL 6.83' 5.10' Axle weights - front 400 lbs. rear 576 lbs. Weight of car - front 19 cwts. 1 qr. = 2158 lbs. rear 24 cwts. 0 qr. = 2687 lbs. TOTAL : = 4845… | ||
| Scan242 | The failure of Firths' copy of American type front road springs. | ||
| View original record | To BY. from Hs/Rn. X3900 Hs/Rm2/LG29.3.28. AMERICAN TYPE FRONT ROAD SPRINGS. X3900 Herewith a report on Firths copy of the American springs. You will observe that all these springs broke in the front… | ||
| Scan243 | Bumper tests conducted on American type front road springs. | ||
| View original record | BUMPER TEST ON AMERICAN TYPE FRONT ROAD SPRINGS. Conditions of test as all previous tests i.e. 105 drum revs/min., tyre pressures 60 lbs/sq.in., weight of front of chassis 15 cwts. 1 qr. 24 lbs.… | ||
| Scan244 | Comparison table of different front road spring types and their test specifications. | ||
| View original record | FRONT ROAD SPRINGS. TYPE. | Loaded lbs. | Loaded camber. | Initial camber after test. | Centres. | No.of leaves. | Type of clips. | lbs. Bulk weight ---|---|---|---|---|---|---|--- Actual American… | ||
| Scan245 | Bumper test report on American type front road springs. | ||
| View original record | 43980 Hs/AJL/LG29.3.28. BUMPER TEST ON AMERICAN TYPE FRONT ROAD SPRINGS. X3900 X.8772 X840 Conditions of test as all previous tests i.e. 105 drum revs/min., tyre pressures 60 lbs/sq.in., weight of… | ||
| Scan246 | The testing and return of special American-made road springs for investigation by Messrs. Firths. | ||
| View original record | Hs. +3980 BY/Cgh1/G.17.4.28. THREE PAIRS OF SPECIAL ROAD SPRINGS. ----------------------------------- Further to BY/Cgh14/G.16.4.28. we have just received a letter from Messrs. Firths in which they… | ||
| Scan247 | Requesting the creation of new forged spring plates by Firths and the analysis of broken spring plates. | ||
| View original record | Hs. C. H. BY/Cghl4/G.16.4.28. With reference to the three pairs of special springs of the American type, BY. has suggested that in view of the fact that the American made spring has come out so well… | ||
| Scan248 | Results of a bumper test conducted on four different pairs of front road springs. | ||
| View original record | X3900 To BY/Cgh. from Hs/AJL. Hs/AJL1/LG21.4.28. X3900 X4429 X.8772 ROAD SPRINGS - BUMPER TEST. With reference to your BY/Cgh1/G17.4.28 and BY/Cgh14/G16.4.28 , we have sent into the despatch Stores to… | ||
| Scan249 | Comparing the performance of Firths' road springs against American springs and discussing spring failures on car 14-EX. | ||
| View original record | To R. from Hs/an. c. to SJ. Wor. c. to E. DA. c. to BY. CY. +3900 Hs/RM/LG2. 5. 28. √4429 √3900 √7+10 ROAD SPRINGS. We have been testing on the bumping rig some front road springs made by Firths which… | ||
| Scan250 | The testing and performance of lighter and stiffer rear springs compared to standard models. | ||
| View original record | contd :- -2- amplitude rear spring movements had something to do with this. With reference to the lighter type of rear spring fitted to 12-EX for test. This type of spring is illustrated in F.78615.… | ||
| Scan251 | Laboratory report detailing the results of fracture, bend, and chemical analysis tests on road spring plates. | ||
| View original record | H16/EA9.5.28. Laboratory. c to Hs. Re Road Spring Plates - Your Ref. BY/Cgh14/G.16.4.28. We give below the results of our Fracture, Bend and Brinell tests and also our analyses :- Lab. Reference… | ||
| Scan252 | Revised standard cost sheet for allowed time and burden on an assembly process. | ||
| View original record | ALLOWED TIME & BURDEN 49/50 TYPE REVISED STANDARD SHEET NO. G. 2158.A ASSEMBLY NO. G. 2158.A K48.0. G.2131. G.2158. ASSEMBLING B. 2CR 1CX LABOUR. R Column Headers: TOTAL OPERATING ALLOWED TIME, TOTAL… | ||
| Scan253 | Manufacturing specifications for four pairs of American type springs, designated (a), (b), (c), and (d). | ||
| View original record | Hs. X3900 BY7/G.25.8.28. FOUR PAIRS OF AMERICAN TYPE SPRINGS. The Order Office are handing to you today . the four pairs of springs referred to above. They are stamped in pairs, (a), (b), (c) and (d).… | ||
| Scan254 | Life and performance summary of different American type springs. | ||
| View original record | To BY. from Hs/Rn. X3900 Hs/Rm5/LG16.10.28. c.c. to DA. Wor. FOUR PAIRS OF AMERICAN TYPE SPRINGS. X4429 We attach a summary of the life of three pairs of these springs. It will be noted that though… | ||
| Scan255 | Summary table of bump test results for six different springs. | ||
| View original record | SUMMARY OF LAST SIX SPRINGS ON BUMP TEST. No. | Make. | Wt. lbs. | Material. | Type. lbs. | Length. | Initial camber after test. | Loaded on lbs. | Position on bump. | Drg. No. | Total Hrs. run.… | ||
| Scan256 | Summary comparing the life and performance of four pairs of American type springs. | ||
| View original record | To BY. from Hs/Rn. c. to DA. Wor. feleny X3900 Hs/Rn5/LG16.10.28. X3900. X248. FOUR PAIRS OF AMERICAN TYPE SPRINGS. We attach a summary of the life of three pairs of these springs. It will be noted… | ||
| Scan257 | Questioning the high cost of the current method for manufacturing road springs based on performance test results. | ||
| View original record | To Wor. from Hs. C. to By. X3900 Hs.1/MJ. 23.7.29. X7941 Y 5410 X3900 ROAD SPRINGS: ============== We feel that the present method of manu- facturing road springs is likely to be very expensive and… | ||
| Scan258 | Comparing American and English car springing, discussing spring stiffness, damping, and lubrication. | ||
| View original record | HS.) FROM R. DA.) X3900. c. to SG. BY. R4/M26.10.29. X.3900 X.7772 X.7410 X.8410 AMERICAN AND ENGLISH CAR SPRINGING With reference to the difference in the American and English springing naturally… | ||
| Scan259 | Dual-rating front spring design for the Phantom II model, referencing past experience. | ||
| View original record | X3900. To: Rm. from Oy. c. Es. c. Ey. Oy3/DM.15.5.30. X5410. X7410. V3900: Front Springs. Sec.7020. Your suggestion in Hs/RM1/EJ.14.5.30 of a spring of two ratings is done in leaf spring construction… | ||
| Scan260 | Comparison of American and English car springing and suspension characteristics. | ||
| View original record | Sg. & Hs. from R. c. Wor. By. C. c. PN. EP. Hm. X3900 R5/M2.7.30. X.8410 X.7410 X.3900 CAR SPRINGING AMERICAN & ENGLISH COMPARED. Replying to Sg17/E1.7.30, with reference to the superiority of the… | ||
| Scan261 | Tyre hardness and the practice of drilling shock damper valves. | ||
| View original record | R5/M2.7.30 contd. +2+ There are very few complaints when cars are so turned out unless the tyres are run unnecessarily hard, which can spoil any effort of ours. Finally, I do not agree to drilling… | ||
| Scan262 | Telegram proposing that the American branch supply its own springs for the left-handed Phantom II model. | ||
| View original record | 839001 In the following countries route and hand in your Telegrams as indicated below :- ROUTING INSTRUCTIONS ARE BEST FREE OF CHARGE. UNITED STATES OF AMERICA—R.C.A. Communications Inc.—New York—233,… | ||
| Scan263 | Car springing, flexibility, and the supply of springs for cars destined for America. | ||
| View original record | SG. FROM R. X3900 R2/M26.11.30. C. to WOR. HS. C. to BY. EP. SPRINGING. X.7410. X.7772. X.3900. You can rest assured that there is no difference in the steel used in the American and British springs… | ||
| Scan264 | Letter from the Springfield, Mass. factory detailing the standard of springing, including front and rear spring stiffness and weight calculations. | ||
| View original record | x3900 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. [Stamp: POST RECEIVED 22 DEC 1930] [Stamp: RECEIVED DEC 16 1930] [Handwritten: W] Btn- 1 December 12, 1930. Rolls Royce, Ltd., Derby, England.… | ||
| Scan265 | Calculations and specifications for vehicle road spring stiffness, deflection, and stress. | ||
| View original record | - 2 - We started by making these springs 3¾" deflection (½ negative camber). Stiffness = 1150 / 3.75 = 305 and this has since been specified as 315 ± 20 lbs./in. 2. Rear Springs (a) Length at front… | ||
| Scan266 | The formulas and considerations for designing leaf springs, including stiffness and plate overlap. | ||
| View original record | - 3 - This is not strictly accurate as it takes no account of the stress in the individual plates when the spring is unloaded. An allowance should be made for this. 2. For an unequal spring, we have a… | ||
| Scan267 | Procedural note on the manufacturing custom for spring plates to ensure consistent curvature. | ||
| View original record | - 4 - It is our custom to make all plates of one thickness to the same initial curvature (i.e. for one particular type of spring) so that the same former can be used for all plates of that thickness.… | ||
| Scan268 | Chart detailing rear spring specifications for various body types and chassis. | ||
| View original record | DRAWING NO. A 14835. SEE ALSO THE FOLLOWING OPERATION DRAWINGS CHART of REAR SPRINGS. 1. ORIGINAL ERECTION - CHASSIS TO BE SPRUNG IN ACCORDANCE WITH BODY TYPES. SPRINGS. BODY TYPE, STD. REAR WEIGHT,… | ||
| Scan269 | Appropriate type of springing for chassis being supplied to the American market, including feedback on different suspension setups. | ||
| View original record | X3900. Hs RECEIVED 1931 JAN 12 To Hs. from Sg. re Springing and RRAI. Sg8/E20.1.31 Copy to Worr Now that we have definitely told America that we are going to supply the springs and as the time is… | ||
| Scan270 | Specifications for road springs and buffer clearances on Left Hand Drive Phantom II cars for the American market. | ||
| View original record | To. By. From Hs/Lid. C. to EP. 85900. Hs/Lid.5/KT.23.1.31. ROAD SPRINGS FOR L.H. P.II CARS. Left hand P.II cars for America, fitted with 4.50" initial camber front springs and 10.25" initial camber… | ||
| Scan271 | Road spring specifications for the 25-EX American chassis. | ||
| View original record | To BY. From Hs/Rm. 83900 Hs/Rm.1/MJ. 24.1.31. ROAD SPRINGS FOR AMERICAN CHASSIS. We consider that the road springs fitted to 25-EX. at the present time are a very reasonable compromise. They are as… | ||
| Scan272 | Selection and modification of springs and shock absorbers for a left-hand drive chassis. | ||
| View original record | To Sg. From Hs. c. to WoF. Hs.1/MJ.24.1.31. RE. SPRINGING FOR R.R.A.I. Replying to Sg8/E20.1.31. We have decided from all our knowledge so far that the most satisfactory springs to fit on to the… | ||
| Scan273 | Cablegram detailing a revised schedule of spring stiffnesses for the LHP Two Chassis. | ||
| View original record | FORM No. 6. X3909 1320 WESTERN UNION CABLEGRAM THE WESTERN UNION TELEGRAPH COMPANY. ANGLO-AMERICAN TELEGRAPH Co., Ltd. BBM49 SPRINGFIELD MASS 17 16TH STAMP: RECEIVED 1931 MAR 18 STAMP: 1931 MAR 17 AM… | ||
| Scan274 | Night letter cable detailing rear and front spring stiffness values. | ||
| View original record | X3900. NIGHT LETTER CABLE. Hives 23.3.31. Rolls-Royce. Springfield. Mass. U.S.A. BURTON REAR SPRING STIFFNESS 130 POUNDS PER INCH FRONT 250 POUNDS PER INCH. HIVES. | ||
| Scan275 | Letter from the American to the English office regarding PII spring stiffness. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Btn-5 March 26, 1931. Rolls Royce, Ltd., Derby, England. Attention of Mr. Hives. Dear Mr. Hives: Re: PII Spring Stiffness. We acknowledge receipt of… | ||
| Scan276 | Letter regarding procedures for checking the springing on L.H. PII cars and measuring spring frequencies. | ||
| View original record | 83900 BY 15 APR 1931 RECEIVED POST 15 APR 1931 RECEIVED Btn-11 April 6, 1931. Cc- Mr. Hives Rolls Royce, Ltd., Derby, England. Attention of Mr. Bailey. Gentlemen: Re: L.H. PII Springing. For your… | ||
| Scan277 | New system for checking the springing of PII chassis based on average loading for different body types. | ||
| View original record | COPY Btn-1 April 3, 1931. To: Mr. Ross Cc- Mr. Caswell Mr. Spencer Mr. Beck From: Mr. Burton Re: Springing of PII Chassis. The springing of PII chassis will necessarily have to be checked in a rather… | ||
| Scan278 | Specification sheet detailing vehicle clearance measurements for different passenger configurations and load conditions. | ||
| View original record | - 2 - With a car empty, but complete as defined above: 7 Pass. 5 Pass. Couplet Front 1.900 1.900 2.000 Rear 7.250 7.187 5.950 Under maximum load this will give rubber clearances: Front 1.687 1.650… | ||