Rolls-Royce Archives
| Identifier | Entry | ||
| 03-page01 | Committee discussion regarding steering wobbles and returning out-of-balance tyres to the makers. | ||
| View original record | COPY. RE. STEERING WOBBLES. Mr. Nadin informed the Committee that he had written to 'S' asking for a reply to our letter asking whether we should be correct in returning to the makers any tyres… | ||
| 03-page02 | Steering wobbles caused by imbalances in the tyres and inner tubes. | ||
| View original record | COPY. Sept 7th.1911. To Mr. Wormald. RE. STEERING WOBBLES. When Mr. Hanbury was here on Monday he made some interesting statements in regard to steering wobbles and consequently have made some careful… | ||
| 03-page03 | Causes of steering wobbles and the results of tyre balancing tests. | ||
| View original record | G (West) 1M pd. 24. 9.10 E.P. God. Handwritten: TECHNICAL COMMITTEE 33rd meeting Handwritten: COPY Stamped: RECEIVED "P" SEP Sept. 7th 1911 Mr Wormald. Re Steering Wobbles. When Mr Hanbury was here on… | ||
| 03-page04 | Meeting minutes concerning a delay in response about returning unbalanced tires causing steering wobble. | ||
| View original record | th Meeting Re Steering Wobbles. v. 15. 11. Mr. Hadin informed the Committee that he had written to "U" asking for a reply to our letter asking whether we should be correct in returning to the makers… | ||
| 03-page05 | Minutes from the 93rd meeting discussing tyre balance issues with Dunlop, Michelin, and Continental tyre companies. | ||
| View original record | STEERING (Contd.) (8) Copy 93rd Meeting Dec 1st The balance of tyres. Mr. Hndin submitted a letter from the Dunlop Pneumatic Tyre Co. dated December 22nd, concerning the balance of tyres. The gist of… | ||
| 03-page06 | Issue of steering wobbles. | ||
| View original record | R.R. Form No. 4174 (O.P.S. 11953) 100,000 11-2-27 Lytton Section 3900. Description: Steering wobbles. X401 REPORT Test & pass, Cooke To suit Mr. [illegible] Mac - also having this. T.C.105. | ||
| 03-page07 | Query regarding the policy for returning out-of-balance tyres that cause steering wobbles. | ||
| View original record | NL/ L231011 REF. 33 (iv) October 23rd 1911 Re Steering Wobbles. W to S. 23-10-11 Will you kindly inform us whether we should be correct in returning to the makers any tyres delivered after a certain… | ||
| 03-page08 | Meeting notes concerning steering wobbles and the uniformity of tires from makers. | ||
| View original record | STEERING. Meeting 3rd.11. Re Steering Wobbles. Mr Nadin informed the Committee that "S" had written saying they would insist upon tires being uniform from the makers. Mr Nadin informed the Committee… | ||
| 03-page09 | Strategy of threatening to buy tyres from other makers to apply pressure on a supplier. | ||
| View original record | 2. cannot suggest any means of bringing pressure to bear, other than a threat that we shall [handwritten: buy] other makers tyres. Will you kindly advise us on this matter, as we do not consider this… | ||
| 03-page10 | Meeting minutes discussing the balance of tyres with Dunlop and Michelin. | ||
| View original record | Dec. 4th, 1911. STEERING. 93rd. Meeting. Re. balance of tyres. Mr. Nadin submitted a letter from the Dunlop Tyre Co. dated Dec. 22nd. concerning the balance of tyres. The gist of their letter was that… | ||
| 03-page11 | To Mr. Johnson discussing how to address tyre balance issues with suppliers. | ||
| View original record | H.R. type (D.M.G.) (W'kly. Ltr.Bk) G. M'g's Ref. 93 (x) X401 Mr Johnson. 6/12/11 T885/L61211. With reference to the minute 10 of the 93rd meeting attached, we have carried this matter of tyre balance… | ||
| 03-page12 | Requesting figures from tests on steering wobble, with a note on the advisability of paying other workers. | ||
| View original record | pressure & leave other than a threat that we shall pay other workers types. Will you kindly advise us on this matter as we do not consider this step to be advisable Mr Platford TBB 6/L11112 Re… | ||
| 03-page13 | Following up on a request for test figures on the balance of tyres and inner tubes in relation to steering wobble. | ||
| View original record | Ref. 107 (33-4) X401 Re Steering Wobble. Mr Platford. 11/1/12. TRB6/111112. At the 107th meeting you promised to carry out some tests in order to obtain figures with reference to the amount our tyres… | ||
| 03-page14 | Customer feedback on wheel balancing issues caused by security bolt placement on Rudge-Whitworth wheels. | ||
| View original record | COPY. Cx13/B7.6.12. To Mr. Johnson. Mr. L.F.Gjers of Middlesborough who has four 40/50 HP. Rolls-Royce cars, who called in the other day, while waiting for his wife, to have a chat with me as he often… | ||
| 03-page15 | Out of balance issues caused by different brands of tyres and inner tubes. | ||
| View original record | Sir Barrington X401 Cromwell [handwritten] REPORT ON OUT OF BALANCE CAUSED BY TYRES. [Stamped: Partially legible circular stamp reading RECEIVED MAR...] Mr Iadin. March 21st 1912. The outer covers I… | ||
| 03-page16 | Wheel balance issues caused by tubes and requesting the matter be taken up with the makers. | ||
| View original record | As this matter is important I shall be glad if you will take same up with the makers as if the tubes are always going to be out of balance the wheels themselves must be made out of balance to… | ||
| 03-page17 | Departmental memo regarding a customer's feedback on wheel balancing issues with Rudge-Whitworth wheels. | ||
| View original record | ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS: "ROLHEAD," LONDON. TELEPHONES: 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is for Name of Person addressed: Mr. Johnson… | ||
| 03-page18 | Departmental memo regarding a matter raised by Mr. Gjers to be brought to the attention of Rudge Whitworth. | ||
| View original record | ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS: "ROLHEAD," LONDON. TELEPHONES: 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is for Name of Person addressed. Mr.… | ||
| 03-page19 | Letter from an ironmaster concerning the balance of wheels. | ||
| View original record | ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. GJERS, MILLS & Cº LIMITED, IRONMASTERS. FOUNDRY & HEMATITE PIG IRON FERRO SILICON & SILICO SPIEGEL Brand, 'AYRESOME'. TELEGRAPHIC CYPHER:- 'AYRESOME,… | ||
| 03-page20 | Balancing Rudge-Whitworth wheels, citing unequally spaced securing bolts as the issue. | ||
| View original record | equidistant securing -bolts-. I never found it necessary to balance them, the reason was that I have four of your cars are with the Rudge-Whitworth wheels & I must get them balanced. In the first… | ||
| 03-page21 | Letter on Gjers, Mills & Co. Limited letterhead regarding the balance of a valve and tube. | ||
| View original record | ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. GJERS, MILLS & Cº LIMITED, IRONMASTERS. FOUNDRY & HEMATITE PIG IRON FERRO SILICON & SILICO SPIEGEL. Brand, 'AYRESOME' TELEGRAPHIC CYPHER, 'AYRESOME,… | ||
| 03-page22 | The difference in steering feel between Rudge Whitworth wire wheels and wooden wheels using Palmer Cord tyres. | ||
| View original record | W Platford Can you say something re Palmers? [Pencil Note Top Right]: W. Haden Had one on test. said tyres have had room to play once or twice otherwise behaved well LP it quite won't do - I notice… | ||
| 03-page23 | Departmental memo discussing the balance of front wheels and methods to overcome related difficulties. | ||
| View original record | ROLLS-ROYCE LIMITED. NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). DEPARTMENTAL MEMO. This column is for Name of Person addressed: Mr Johnson Date: 4.7.12. Re… | ||
| 03-page24 | Departmental memo regarding the rejection of a scheme proposed by Mr. Gjers. | ||
| View original record | 15-5m-15.11.12. B.& M. Ltd. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (Two Lines). DEPARTMENTAL MEMO. This column is for Name of Person addressed. Date.… | ||
| 03-page25 | Letter discussing the factors affecting the balance of front wheels. | ||
| View original record | X401 EBS/L4712. July 4th. 1912. L.P.Cjera sq., Woodlands Road, Middlesborough. Dear Sir, Re Balance of Front Wheels. With reference to your conversation with our Mr Cox at London some time ago… | ||
| 03-page26 | Letter discussing wheel balancing in relation to inner tubes, valves, and balance weights. | ||
| View original record | T.P.Gjers Esq., -2- July 4th.1912. be experienced in this respect as it is quite a reasonable proposition to fit balance weights to the felloe in order to bring this portion of the system in correct… | ||
| 03-page27 | Letter discussing the placement of security bolts for wheel balancing. | ||
| View original record | L. F. Gjers Esq., -3- July 4th.1912. in overcoming your difficulties by disposing the security bolts in such a way that they would balance to some extent the weight of the valve, but we do not think… | ||
| 03-page28 | Letter to L. F. Gjers Esq. discussing the disadvantages of using balance washers on security bolts. | ||
| View original record | L. F.Gjers Esq. -4- July 4th.1912. We have however, in some cases fitted balance washers carried by selected security bolts to form a correction for the lap joint and tyre irregularities, but the… | ||
| 03-page29 | Letter to L. F. Gjers regarding the balancing and security bolt spacing on Rudge Whitworth front wheels. | ||
| View original record | X401 TRH/L/2812. August 22nd 1912. L. F. Gjers Esq., Ayresome Iron Works, Middlesbrough. Road wheels Dear Sir, Re Balance of Rudge Whitworth Front Wheels. With reference to your letter of July 30th… | ||
| 03-page30 | The balancing of Rudge-Whitworth wheels and the steering effect of Palmer cord tyres. | ||
| View original record | L. F. Gjers Esq. -2- August 22nd1912. accessible positions will have in each case, with the exception of one, 3 "bundles" of spokes between each pair of security bolts and in the one case will have… | ||
| 03-page31 | Letter to L. P. Cjers Esq. regarding the effect of tyre weight on steering, with a handwritten note about filing. | ||
| View original record | L. P. Cjers Esq., -3- August 22nd 1912. contact with the road. We do not think that the extra weight of tyre has any appreciable effect on the steering, owing to the comparatively low speed at which… | ||
| 03-page32 | Expressing serious concern over out-of-balance tyres causing high-speed wobble. | ||
| View original record | x 401 c. Hs. BY3/H. 14.7.25. OUT-OF-BALANCE OF TYRES. ------------------------ He. and myself are most seriously alarmed about the question of the out-of-balance of the tyre, which I have raised on… | ||
| 03-page33 | Mr. Royce's disapproval of a proposed scheme for attaching balance weights to wire wheels. | ||
| View original record | To BY. from DA. c. to CJ. Hs. +401 DA3/2029. 8.25. BALANCE WEIGHTS ON WIRE WHEELS. X.401 X.457 Mr. Royce did not approve is of the scheme for holding on balance weights, of which the pieces were… | ||
| 03-page34 | Construction of a gyroscopic apparatus to investigate high-speed steering wobbles. | ||
| View original record | To Hs. from DA. +401 DA2/M2.9.25. HIGH SPEED STEERING WOBBLES. X.457 X.401 Thank you for your Hs/Rm2/LG31.8.25. Over the weekend we have constructed an apparatus rather similar to the sketch we sent… | ||
| 03-page35 | Letter from Dunlop regarding the dynamic balance of wheels and tyres. | ||
| View original record | Telegraphic Address: "DUNLOP'S, BIRMINGHAM" Telephone No. BIRMINGHAM CENTRAL 4108 PRIVATE BRANCH EXCHANGE (17 LINES) X401 BY APPOINTMENT Registered Offices, DUNLOP HOUSE, 1, ALBANY ST. LONDON, N.W.1.… | ||
| 03-page36 | Proposed improvements to steering and suspension for Phantom and India models to reduce wobbles and road shocks. | ||
| View original record | To BY. HS. from R. c. to CJ. BJ. c. to HS. Wor. c. to DA. E. c' to FN. CWB. Y401 RL/M10.9.25. NEW PHANTOM & INDIA. RE. STEERING, X.5430 X.401 SLOW SPEED WOBBLES & ROAD SHOCKS. X.5430 X.457 Regarding… | ||
| 03-page37 | Solutions for road shocks and high-speed wobble, involving a damped pendulum lever and other recommendations. | ||
| View original record | Contd :- o2o the same object we have sent a new box with larger dia. worm so as to further reduce the feeling of road shocks. A damped pendulum lever will be used for this also as soon as a simple… | ||
| 03-page38 | Causes of high-speed wheel wobble and proposed tests to resolve it. | ||
| View original record | To Hs: from R. c. to CJ. Wor. c. to SY. DA. c. to KFC. CWS. 401 STEERING. X.8430 X.458 X.401. R1/M14.9.25. Naturally you will still be pressing forward the tests to ascertain why the high speed… | ||
| 03-page39 | Wheel wobble, tramping speed, and potential design solutions for axles and pivots. | ||
| View original record | contd :- -2- parts of the wheels and axles, we shall get a tendency to wobble when the tramping speed sychronises with the road wheel speed, but we want to be sure of this. As you know we can lower… | ||
| 03-page40 | Decisions made to address high speed steering wobbles in the Phantom model. | ||
| View original record | to Hs. from DA. c. to CJ. BY. c. to EP. PN. f401 DA1/M23.9.25. PHANTOM STEERING. VISIT OF HS, EP, R4. ON THURSDAY 22ND. INST. X.8430 X.457 X.401 To deal immediately with the question of high speed… | ||
| 03-page41 | Notes on front axle modifications, weight reduction, and wheel design. | ||
| View original record | -2- wobbles. As soon as this .940 lead worm has been tested and agreed to, existing worms should be scrapped. (7) In order to take out weight, as an immediate move it is proposed to do more machining… | ||
| 03-page42 | Material and appearance of front wheel balancing washers, suggesting the use of stainless steel. | ||
| View original record | 7401 BJG/H24.9.25. BALANCING OF FRONT WHEELS. Copies to Hu. Will you kindly have the suggestions made in the following copy of CWB16/LH23.9.25 considered, and let me know the opinion of the technical… | ||
| 03-page43 | Material choice and plating finish for front wheel balancing components. | ||
| View original record | Y401 RH. C. Hs. C.H. C.W/S.O.W.B. BYS/H. 25.9.25. BALANCING FRONT WHEELS. -------------------------- BJ6/H. 24.9.25. I think the position outlined in CWB16/LH. 23.9.25. is the result of a… | ||
| 03-page44 | Steering wobble and balance issues associated with Rapson tyres, especially balloon types. | ||
| View original record | To Hs. from Da. 401 DAB/M7.10.25. RAPSON TYRES AND STEERING WOBBLES. X.1238 X.457 X.401 We know that you do not like Rapson tyres, and that you have found them to be considerably out of balance and… | ||
| 03-page45 | Procedures and limits for testing tyres for 'out of truth'. | ||
| View original record | BY. c. Hs. c. BJ. 4401 EP8/H7.10.25. re. Out of Truth of Tyres. With reference to BJ's memo BJ19/H30.9.25. the last paragraph - will you please issue technical instructions to the Works, and let us… | ||
| 03-page46 | How tyres running out of true cause steering wobbles, particularly with low-pressure balloon tyres. | ||
| View original record | R.R. AERO D/L CROMFORD 7-25-25 C.W. & S. EXPERIMENTAL REPORT Exptl. No. 4401 REF: He/Rm2/LG6.10.25 To R: from He/Rs. c. to CJ. BJ. c. to RH. S. c. to DA. BY. c. to EP. MX. c. to Wor. OUT-OF-TRUTH OF… | ||
| 03-page47 | Page on addressing car wobble by swapping front and rear tyres. | ||
| View original record | R.R.C. 400M 100 BKS. 1M 12-24.(2-3863). EXPERIMENTAL REPORT. -2- Expt. No. REF. Hm/Rm2/LG6.10.25 We suggest that the only feasible method of attacking the difficulty in practice is to change the front… | ||
| 03-page48 | Concepts of 'out-of-truth' and 'out-of-balance' in tyres and their effects. | ||
| View original record | X401 c. Hs. c. BJ. BY11/H. 9.10.25. "OUT-OF-TRUTH" OF TYRES. -------------------- Referring to EP8/H. 7.10.25. I am definitely of the opinion that you are reading into BJ19/H. 30.9.25. more than was… | ||
| 03-page49 | Tyre dimensional errors comparing dynamometer testing to real-world road conditions. | ||
| View original record | - 2 - BY11/H. 9.10.25. When running the tyre on the dynamometer, drum, one has a perfect running surface for the tyre to work upon, consequently the slightest dimensional error tends to produce some… | ||
| 03-page50 | Policy on 'out-of-truth' tyres and whether to issue warnings to customers. | ||
| View original record | To EP. from BJ. Copies to Hs. X401 BJ6/H12.10.25. OUT-OF-TRUTH TYRES. With reference to BY11/H9.10.25, addressed to EP., so far as we are concerned, the position is as follows:- DA1/H23.9.25 addressed… | ||
| 03-page51 | How to word instructions for the instruction book about tyres that are 'out of truth'. | ||
| View original record | To EP. from BJ. Copies to SY. and Hs. Handwritten: to within what limits ?? -2- ?? "are not out of truth, and W. should please "arrange for this before cars are delivered to "S. in future."… | ||
| 03-page52 | Issue of tyre out-of-truth and out-of-balance causing high-speed wobbles and the strategy for customer communication. | ||
| View original record | X401 BJ / EFH / Hs. BY7/H. 16.10.25. -------------------- OUT-OF-TRUTH OF TYRES. -------------------- Referring to BJ6/H. 12.10.25. my attitude towards this question agrees definitely with that put… | ||
| 03-page53 | Seeking clarification from Mr. Royce on whether to further instruct customers about using tyres that are 'out of truth'. | ||
| View original record | To EH. from BJ. Y401- Copies to EF. -> Hs. BJ1/H29.10.25. OUT OF TRUTH TYRES. I attach a copy of BJ6/H12.10.25 and BY7/H16.10.25, which deal with DA1/H23.9.25. Please ascertain from Mr. Royce whether… | ||
| 03-page54 | The ongoing issue of balancing Silver Ghost wheels and referencing past reports. | ||
| View original record | R.R. 20m. 28-1-24. J.T. 176-15 L.1011 EXPERIMENTAL REPORT. Expt. No. Handwritten top right: +401 Hs Classic *** To PH; from Hs. c.c to H. p. to BJ. BALANCE OF SILVER GHOST WHEELS. Handwritten next to… | ||
| 03-page55 | 'out-of-truth' tyres, wheel balancing, and the suitability of high-pressure tyres over balloon tyres. | ||
| View original record | Y401 To EH. -> Hs. WP. from BJ. BJ2/H14.11.25. Out-of-truth Tyres. The following is a copy of DA1/H12.11.25, for your information. B.J. COPY OF DA1/H12.11.25. In reply to your E/H/H291025, I have… | ||
| 03-page56 | Proposal to balance the wheels of 'Silver Ghost' cars. | ||
| View original record | a self contained story X401 HS PH8/DN16.11.25. TO ES c. to H., CWS. & Hs FROM PN Balancing wheels of "Silver Ghost" Cars. When at Derby last week I discussed with Es, as desired by you, the lines… | ||
| 03-page57 | Draft letter to 'Silver Ghost' owners regarding steering wheel vibration and the importance of wheel balancing. | ||
| View original record | No. K401 DRAFT. TO BJ. Ha. K. CWB. FROM PN Proposed letter to be sent to owners of "Silver Ghost" cars fitted with Front Wheel Brakes. We think it desirable to revert to a matter which was freely… | ||
| 03-page58 | Wheel balancing issues, the effect of unbalanced hubs, and steering wobble on demonstration cars. | ||
| View original record | H.S. V401 PNS/DH.1.12.25. TO AP c. to BJ., HE. & CWS FROM FH WHEEL BALANCING. When endeavouring to balance the wheels of our demonstration cars with practically no tolerance, it was found that two… | ||
| 03-page59 | Observations of steering wobble and wheel balancing during a high-speed trial run. | ||
| View original record | S/W. HS. from Bt. o. to PN. o. to BJ. o. to CWB. o. to R. Rf PN5/DN1-12-20 X2401 Bt1/HS/18.12.25. re:- Wheel Balancing. H/L.99-12-25. Referring to your comments on PN5/DN.1.12.25, I have noted that… | ||
| 03-page60 | Wheel balancing, addressing issues of hub bearing freeness and steering wobble. | ||
| View original record | R.R. 499 (b) 1M-11.23. M. & S. (11909) J. & S. EXPERIMENTAL REPORT +401 Exptl. No. _______ REF. Hs1/LG3.12.25. To PN. from Hs. c. to BJ. c. to CMB. c. to EP. _______ WHEEL BALANCING. 4401 457… | ||
| 03-page61 | Balancing of front wheels on Silver Ghost cars fitted with front wheel brakes. | ||
| View original record | To Hs. from BJ. Copy to Wor- By- X401 BJ7/H10.12.25. BALANCING FRONT WHEELS OF SILVER GHOST CARS. I understand the technical officials at the Works agree that we should communicate with all owners of… | ||
| 03-page62 | Draft letter to 'Silver Ghost' owners regarding steering vibration and offering a free wheel balancing service. | ||
| View original record | D R A F T. Proposed Letter to be sent to Owners of "SILVER GHOST" Cars fitted with F.W.B. Dear sir, We think it desirable to revert to a matter which was freely discussed about fifteen years ago,… | ||
| 03-page63 | Internal discussion on refining the wording for a letter to Silver Ghost owners about steering wheel vibration caused by out-of-balance wheels. | ||
| View original record | R.R. Ld. (illegible) D. 11/24. 1.M. EXPERIMENTAL REPORT Expt. No. 440 REF. H86/LG11.12.25 To E.J. from Hs. c. to Wor. BALANCING FRONT WHEELS ON SILVER GHOST CARS. V3465 With reference to the proposed… | ||
| 03-page64 | New wheel balancing scheme to avoid the appearance of three masses. | ||
| View original record | To EY. from DA. c. to Hs. X.401 DA4/M22.7.26. WHEEL BALANCING. This is to remind you that it is desired to try the wheel balancing scheme shown on N.sch.2048 the object being to avoid the appearance… | ||
| 03-page65 | The wheel balancing requirements for a joint in an inner tube. | ||
| View original record | - 2 - BY16/H. 25.11.26. The joint in the inner tube requires 7 ounces to balance it, on the inside of the rim on the opposite side of the centre of the wheel, and therefore it would be a serious… | ||
| 03-page66 | Impact of Dunlop's new inner tube joint position on wheel balancing schemes. | ||
| View original record | Hs X401 BY16/H. 25.11.26. NOV 26 1926 wd. C. Hs. WIRE WHEELS WITH WELL BASE RIMS. RECEIVED The Dunlop Company have changed the position of their joint in the inner tube relative to the valve. Our… | ||
| 03-page67 | Wheel balancing tests for 33 x 6.75' tyres, focusing on inner tube joint positioning. | ||
| View original record | To EY. from Hs/AJL. 4401 x401 x4565 4457 WHEEL BALANCING (33 X 6.75" tyres). We have carried out tests to investigate the advantages gained by using inner tubes in which the joint in the tube is… | ||
| 03-page68 | Wheel balancing issues related to the position of the inner tube joint. | ||
| View original record | contd :- -2- It is unfortunate that the alteration of the position of the joint in the tube has been made, for the following reasons :- (1) It is not conveniently possible to balance a wheel fitted… | ||
| 03-page69 | Requesting a test on the effect of an unbalanced force on lengthened stub axles for an 'SS' front axle. | ||
| View original record | Re. From DA. 4901 DA2/M22.6.28 'SS' FRONT AXLE. X.7420 X.401 X.487 With reference to hm/Sal/LC18.6.28., F. thinks that an objection to putting the wheel further from the plane of the pivot would be… | ||
| 03-page70 | The out-of-balance specification for tyres on the 20 HP chassis. | ||
| View original record | BY. From Hs/Rn. COPY. X401 Hs/Rn.2/MJ.14.2.30. X.401. X.5820. X.5810. OUT OF BALANCE OF 6" TYRES FOR 19" RIMS. 20 HP. CHASSIS. With reference to your By.23/N19.12.29. Please note that the Dunlop… | ||
| 03-page71 | Out-of-balance 6' tyres for 19' rims on a 20 HP chassis. | ||
| View original record | Ms. YUO 1 BY/t.W.S/N.18.2.30. yours. x 5820. x 5810. Re: Out of Balance of 6" tyres for 19" rims 20 HP. Chassis Referring to your memo Ms/Rm2/W.14.2.30. we have arranged for the extra out of balance… | ||
| 03-page72 | Increasing the number of balance weights on the 40/50 model car tyres. | ||
| View original record | BY. From Hs/Rn. Y401. Hs/Rn.2/WJ.22.2.30. 28820 Since we have been able to increase the number of balance weights on the 20HP. car, we think we should do the same thing on the 40/50 as this will… | ||
| 03-page73 | Recommending a new instrument for measuring the pivot lean of the front axle. | ||
| View original record | Hm. From Hs/Rn. For Depot Sheet. 8401. Hs/Rn.7/MJ.9.4.30. Since all Depots are likely to have to change front springs we think it is essential that they should be in a position to measure the pivot… | ||
| 03-page74 | Steering complaint from Sir Henry Segrave, detailing issues with an out-of-balance front wheel and incorrect pivot lean. | ||
| View original record | SIR HENRY SEGRAVE'S DE SOTO Y40Y EP. From Hs/Rn. c. to Ds. c. to E. STEERING COMPLAINT - SIR HENRY SEGRAVE.81-WJ. On going over the steering on this car, which was complained of by Sir Henry Segrave,… | ||
| 03-page75 | Request for an opinion on balancing a pair of wheels and tyres from Major Segrave's car. | ||
| View original record | y401. MX. From Hs/Rn. Hs/Rn.2/W.14.4.30. x7518 x401 We are sending over to you a pair of wheels and tyres off Major Segrave's car. We should like to have your opinion as to whether it is possible to… | ||
| 03-page76 | The balancing issues with 'India Tyres' and their effect on vehicle steering. | ||
| View original record | C. From HC/BM. C. To Mr. EV. C. To Mr. W. C. To Mr. R. C. To JP. H. Y401 X7518 X6262 Y401 X7810 INDIA TYRES. On Major Segrave's car we found that one of the front wheels was 1 lb. out of balance. We… | ||
| 03-page77 | Excessive out-of-balance condition of 'India' brand tyres from Major Segrave's car. | ||
| View original record | 1401 To C. From Hs/Bn. C. to Nor. By. C. to MX. Hn. Hs/Bn.2/SJ.23.4.30. 17050 18462 1401 17810 INDIA TYRES. We are forwarding to you one of the 'India' covers and tubes off Major Segrave's car. This… | ||
| 03-page78 | Defective 'India' 40/50 HP tyre being sent for replacement due to a manufacturing defect. | ||
| View original record | y401 Stores. From Ha/Rn. c. to O.O. S.O. Ha/Rn.1/MJ.24.4.30. We are sending into the Stores for despatch to London by chassis, for the attention of Mr. Cowan - One 'India' 40/50 HP. tyre. This tyre is… | ||
| 03-page79 | Unsuitability of balancing tyres by pairing imbalanced covers and tubes. | ||
| View original record | To C. From Hs/Rn. Y401 Hs/Rn.1/WJ.25.4.30. v4063 y401 v3310 'INDIA' TYRES. We thank you for your letter C16/C24.4.30 with enclosure from Capt. Bowman. We gather from his letter that the India Tyre… | ||
| 03-page80 | Proposing an increased limit for 20-inch wheels for discussion with the India Tyre Co. | ||
| View original record | -2- Hs/Rn.1/AL.25.4.30.Contd. though they have to go to great trouble to work to our limits. We are proposing to increase the limit to 80 ins. ozs. for the 20" wheel and should like you to put the… | ||
| 03-page81 | Recommending an instrument for depots to check the Phantom II pivot lean to prevent steering issues. | ||
| View original record | To Hm. From Hs/Rm. X401 Hs/Rm.8/W.3.5.30. We find that some Depots have no means of checking Phantom ll pivot lean. We think that it is most important for them to be provided with an instrument for… | ||
| 03-page82 | Results of Phantom II steering tests concerning pivot lean and toe-in. | ||
| View original record | To BY. From Hs/Rm. c. to MX. c. to EP. 401 Hs/Rn.1/W.12.5.30. X401. X7425 X7430 PHANTOM 11 STEERING. PIVOT LEAN & TOE-IN We carried out most careful tests on the first Phantom 11 car in France, to… | ||
| 03-page83 | Recommendations for resolving Phantom II steering complaints, focusing on wheel balance, tyre pressure, and pivot lean. | ||
| View original record | To Hs. For Depot Sheet. From Hs/sn. c. to WX. c. to BY. X401 Hs/sn.1/AJ.13.6.30. X.401 X.7320 X.7310 X.7420 X.7320. X.7430 X.7425 PHANTOM II STEERING. We have investigated one or two cases of Phantom… | ||
| 03-page84 | Technical notes on cross-steering tube adjustment, friction, and shock absorber loading. | ||
| View original record | -2- the measurement of pivot lean. (4) CROSS-STEERING TUBE. A very important feature in the functioning of the steering is the 'toe-in' of the front wheels, or front wheel 'gather' (Page 13 Steering… | ||
| 03-page85 | Potential causes of poor steering, including a diagram for testing a cross-steering tube. | ||
| View original record | -3- It is possible that when the shock absorbers are filled, all the air is not excluded from the system and consequently as the car is driven about this air is expelled and the oil level falls.… | ||
| 03-page86 | Blueprint detailing adjustments and poundage requirements for a cross steering tube. | ||
| View original record | GAP HERE. .005" TO .015" IF THIS GAP IS TOO GREAT WHEELS MAY TOE IN EXCESSIVELY A) PACKING WASHERS FITTED HERE TO INCREASE POUNDAGE B) STANDARD POUNDAGE REQUIRED TO TWIST THE CROSS STEERING TUBE BY… | ||
| 03-page87 | Specifications for the inclination of steering pivots and wheel 'towing in' for the Phantom II model. | ||
| View original record | X401 BY/G.13.5.30. PHANTOM II - INCLINATION OF PIVOTS (STEERING). Please note that we have been instructed to make the inclination of the pivot 2½° with a limit of plus or minus ¼°. At the same time… | ||
| 03-page88 | Balance weights and limits for 7' tyres on 20' rims. | ||
| View original record | BY. From Hs/Rn. X401. Hs/Rn.4/WJ.5.6.30. 7" TYRES FOR 20" RIMS.40/50. X.7820. X.4050. X.401. The new balance weights on the 20" rim give a mass equivalent of 14 1/2 ozs. at the rim radius 8". We… | ||
| 03-page89 | List of customer cars exhibiting excessive toe-in, with vehicle specifications and mileage. | ||
| View original record | x 401 ROLLS-ROYCE CARS SHOWING EXCESSIVE TOE-IN. X.401. X.320. X.7425. X.7810. Mileage Marquis of Anglesey. (Via Hoopers, Chelsea). Rolls-Royce Phantom 11. 1930. 33x6.75 Silent Fort. Toe in 1/4".… | ||
| 03-page90 | Excessive front tyre wear on Phantom II R.A. cars due to incorrect toe-in settings. | ||
| View original record | COPY. To Hm. From Hs/Rm. c. to Wor. c. to BY. c. to EF. c. to MX. X.401 X.7820. X.7425. X.7810. In Depot Sheet No.160 we pointed out the importance of the correct toe-in being obtained on the… | ||
| 03-page91 | Requesting a replacement bolt and plate for a spare wheel that was lost. | ||
| View original record | Printed Text: E.S. G.L. 3960 D/D. 18.2.30. W.P. B'ham. TELEPHONE NO. 1220 (5 LINES). TELEGRAMS "ROYCAR, DERBY". ROLLS-ROYCE LIMITED. H.M. THE KING. MOTOR CAR MANUFACTURERS. NIGHTINGALE ROAD, DERBY. To… | ||
| 03-page92 | Postcard addressed to the Experimental Department in Derby, England. | ||
| View original record | POST CARD THE ADDRESS TO BE WRITTEN ON THIS SIDE Postmark: PARIS R.P. 22 JUIN 26 Stamp: 30c Handwritten Address: Expt. Dept. Messrs. Rolls-Royce Ltd., Derby. England. | ||
| 03-page93 | Complaints of front wheel 'toeing-in' on the Phantom III model. | ||
| View original record | COPY. To Wor. from Sg. C. to C. Sg/D31.7.30. Re: Phantom III's. We seem to be experiencing a number of complaints of a new type in connection with the "toeing-in" of the front wheels. As one imagines… | ||
| 03-page94 | Request for a report regarding an attached memo concerning Phantom II's. | ||
| View original record | To Mr. S. Hives - from Mr. x401. HW/PG1.8.30. Re: Phantom II's. Will you please let me have your report regarding the attached copy of memo from Sg? Hn. 160 + amendment Hy. | ||