Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Request for instructions to alter a car's springing by fitting flexible inverted springs and old oil shock absorbers. | ||
| View original record | X235 N8/L261011 REF 62/24 (1) Oct.26th 1911 Re New Springing - Shock Absorbers Mr. Spinney 26-10-11 Will you please issue the necessary instructions for altering and fitting a car fitted with flexible… | ||
| Scan002 | Meeting notes on adapting old hydraulic shock absorbers with a long lever for testing with flexible springs. | ||
| View original record | 75th Meeting Nov. 15. 11. X235 With reference to the old type Hydraulic Shock Absorbers, Mr. Spinney reported that these had insufficient stroke to allow them to be used with the more flexible springs… | ||
| Scan003 | Minutes from a meeting discussing a design issue with a longer lever for hydraulic shock absorbers. | ||
| View original record | 123 2nd Meeting With respect to the Hydraulic Shock SHOCK ABSORBERS (Contd.) (G) absorbers which it was proposed to test with the new springing, Mr. Spinney has not yet designed the longer lever… | ||
| Scan004 | Meeting minute discussing new springing, casting delivery, and problems designing compatible hydraulic shock absorbers. | ||
| View original record | C o p y. (for original refer "Springs") REF. 75 - 24(1) Mr Spinney 8/12/11 Re New Springing. TBB13/DL81211. Minute 24 (1) of the 75th Meeting of the T.C. read at the 92nd Meeting December 4th. "Mr… | ||
| Scan005 | Index card detailing a modification to hydraulic shock absorbers, specifically altering the connecting links. | ||
| View original record | R.R. 148 (200m) (X 995. 5.6.12.) G 2627. X235 9/535. Hydraulic Shock Absorbers (2 Cards) lust'd Alter connecting links F2751. 4/9/12. to 8.500 centres. (2 Cards) Section 103. | ||
| Scan006 | Job card for the supply and fitting of hydraulic shock absorbers. | ||
| View original record | W.R. 148. 200 m (X 095. 5.6.10) G 2027. X235 F. 2211. G/535. Hydraulic Shock Absorbers. (4 Card) Instd. Supply + fit 11/9/12. Pair Shock absorbers 4 Card. as per instruction sheet N° 4839 Finished +… | ||
| Scan007 | Record card for a Hydraulic Shock Absorber, including supply and testing information. | ||
| View original record | O.R. 148 (200 H) (X 905, 5.6.12) G 2627. g. 535. Hydraulic Shock Absorber. X235 (Card) Inst'd. 21/11/12 (1 Card) Supply: 2-Dy 2963. Brackets. Finished & sent to Test. 19.12.12 | ||
| Scan008 | Confirming the delivery of hydraulic shock absorbers to the Experimental Department for testing. | ||
| View original record | Re Hydraulic Shock Absorbers. Mr Nadin 21-11-12 TBB3/L211112 With reference to the attached sheet, the hydraulic shock absorbers have now been delivered to the Experimental Dept. We will carry out… | ||
| Scan009 | Outlining a series of proposed tests for shock dampers, back axle strength, and chassis lateral movement. | ||
| View original record | -2- COPY. H.R. 285A (40/11) 12 PSS1. 9.1.13) G 4098 X2 35 The system of oil shock damper in which the rebound is checked hydraulically is, I still think, the best, and nearly 12 months ago I asked… | ||
| Scan010 | Testing of hydraulically checked shock absorbers. | ||
| View original record | R. R. 285A (1000) (FF351. 9.1.13) G 4988 AW/SM24/025213. SHOCK ABSORBERS - Hydraulically checked. X. 235. Mr. Hives. 25/2/13. In reference to the above, the following is an extract of Mr. Royce's memo… | ||
| Scan011 | Follow-up memo to Mr. Hives regarding an unanswered query from Mr. Royce about a shock absorber experiment. | ||
| View original record | AW/SM16/L12413 Re shock absorbers hydraulically checked. X.235 3rd application Mr Hives 12-4-13 Mr Royce wrote 12/2/13 asking some questions re the above experiment. Mr Royce's query was forwarded to… | ||
| Scan012 | Chasing progress on a delayed shock absorber experiment at the request of Mr Royce. | ||
| View original record | AW/SM27/L29413 Re Shock Absorbers hydraulically checked. X.235 Mr Haldenby 29/4/13 Mr Spinney informs us verbally that the above was issued to the works some time back. Will you kindly look the matter… | ||
| Scan013 | Departmental memo concerning a delay and incorrect fitment of hydraulically checked shock absorbers. | ||
| View original record | R.R. 646 (100 H) (PP. 883. 17-4-13) E.P 3986. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). DEPARTMENTAL MEMO. Wor/SM7/L14513 Re Shock… | ||
| Scan014 | Response to Mr Royce regarding shock absorbers that were incorrectly keyed and returned to the works for alteration. | ||
| View original record | Wor/SM4/L15513 Re Shock Absorbers hydraulically checked. X.235 R. 15/5/13 In reply to Mr Royce's memo dated 12/2/13, we wish to state that these shock absorbers have been fitted to a car but the body… | ||
| Scan015 | From F.H.R. discussing the development of hydraulic versus friction shock dampers. | ||
| View original record | C O P Y. July 12th. 1913. RL/C11713. J. from F.H.R. Copies sent to Wor. and Sp. Shock Dampers. Re Shock Absorbers hydraulically checked. X. 235. This piece of work has been an unreasonably long time… | ||
| Scan016 | Experimental Department 'A' weekly report on piston distortion, benzol tests, and shock absorbers. | ||
| View original record | Mr Johnson. Mr Royce. EXPERIMENTAL DEPT. "A" Weekly Report. Reports have been sent in on - X.117 - Piston distortion using rubber disc to represent gas pressure. X. 53 - Tests of Benzol. X.472 - Valve… | ||
| Scan017 | The ride comfort of a light car, specifically addressing axle jumping over potholes and the effects of shock absorbers. | ||
| View original record | Wor/Hill/L24713 (contd) (2) absorbers on a light car. The most uncomfortable thing that can be felt when riding in one of our present cars is the jumping of the axle over pot holes, this is worse on a… | ||
| Scan018 | Instruction sheet for modifications to hydraulic shock absorber levers on chassis 2704. | ||
| View original record | R.R. 300 (6 n) (XX. 564. 15.10.13) E.P. 5170. U.W. 17529 ROLLS-ROYCE LIMITED. F INSTRUCTIONS. 6-2-14 19 To A. Order No. Customer's No. Re Chassis 2704. Please receive Print F4729 - Ball end for… | ||
| Scan019 | Note on the fitting of rear hydraulic shock absorbers, detailing an installation issue due to a body building mistake. | ||
| View original record | X.235. HYDRAULIC SHOCK ABSORBERS. - R.R. design. fitted at rear only. Origin R12/B14213. For Experimental report see Wor/EH11/L24713. Supervision Sheet F3719. These have had to be fitted somewhat… | ||
| Scan020 | Standardisation of hydraulic shock absorbers for the rear of the car. | ||
| View original record | R.R. 235 A (150 M) (V.V. 985. 23.2.14) G. 0365. To Da. from R. Copy to J. Copy to Wor. for Hy. Copy to Mr Ionides. Copy to Na. Copy to E. - 233/4 R3/P 18. 3. 14. COPY. Our experience with Shock… | ||
| Scan021 | Modifications to shock absorbers concerning the oil filling hole and piston oil flow. | ||
| View original record | R.R. 235 A (150 M) (V.V. Sg. 23.2.14) G. 0363. COPY R6/P 18. 3. 14. To Da. from R. Copy to J. Copy to Wor. for HY. -> 233/4 Copy to Mr Ionides. Copy to Na. Copy to E. With reference to our own Shock… | ||
| Scan022 | Letter seeking clarification on different types of hydraulic shock absorbers and their associated part numbers for various chassis. | ||
| View original record | R.R. E25a (150 H) (V.V. 681 12-3-14) G. 0414. Wor/Mcrll/B23414. Re Hydraulic Shock Absorbers. X. 235. Da. 23.4.14. Na.c. You issued a supervision sheet, F 4743, showing list of experiments to be… | ||
| Scan023 | Clarifying which type of hydraulic shock absorber to use on model 58NA. | ||
| View original record | E.H. 535a. (150 H) (V.V. 782 27.3.14) G. 0442. Wor/Acr8/B1514. Re Hydraulic Shock Absorbers. X.235. Mr Matthews 1.5.14. In reply to your query as to whether Houdaille or R.R. hydraulic shock absorbers… | ||
| Scan024 | Instruction from Mr. Royce to cease production of hydraulic shock absorbers because they fail to retain oil. | ||
| View original record | H.R. 285a (150 H) (V.V. 574. 16-1-14) G. 9478. Extract from Da2/G16514. in X.1077 X.235 - Mr Royce says, "Our Hydraulic shock absorbers are no use because they will not retain oil. Do not make any… | ||
| Scan025 | Confirming the cancellation of an experiment on hydraulic shock absorbers. | ||
| View original record | Wor/Mcrl/L18514. Re R.R. Hydraulic Shock Absorbers. X.235 Mr Mills. 18-5-14. In accordance with your request we have cancelled the above experiment and placed the Shock Absorbers, which are… | ||
| Scan026 | Setup and testing of various shock dampers for Phantom and 20 HP models. | ||
| View original record | To Hs. from DA. c. to CJ. BY. c. to EP. PN. +235 DAS/M23. 9. 25. SHOCK DAMPERS. X.8520 X.4046 X.1152 X.235 Referring to your visit to WW. yesterday, as reported elsewhere the first move is to set up… | ||
| Scan027 | Original hydraulic shock damper, with a handwritten reply confirming it has been sent. | ||
| View original record | TO HS. FROM DA. X235 DA4/M3.10.25. This is to remind you that Mr. Royce would like you to send down to us one of the original R-R Hydraulic shock dampers as soon as possible. DA. [Handwritten Note] HS… | ||
| Scan028 | Confirming the dispatch of one hydraulic shock damper. | ||
| View original record | X.235 To DA. from Hs. Hs/LG7.10.25. R-R HYDRAULIC SHOCK ABSORBER. We have despatched to you today - one hydraulic shock damper as requested in your DA4/M3.10.25. Hs. | ||
| Scan029 | The performance testing of 'Lovejoy' hydraulic shock absorbers. | ||
| View original record | H.R. 493a (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. +235 REF Hs/Rm/LG231025 To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Wor. c. to Oy 'LOVEJOY' SHOCK… | ||
| Scan030 | Running experience of Phantom and India cars, potential chassis weight reduction, and hydraulic shock absorber design. | ||
| View original record | To C.J. from R. c. to Hs. EY. X235 R2/M27.10.25. RE: RUNNING OF PHANTOM AND INDIA. X.8770 X.235 X.5770 X.832 We had some running experience of the cars last weekend - i.e. 8-EX and India (which are… | ||
| Scan031 | Proposed new hydraulic shock dampers for the Phantom model. | ||
| View original record | 4235 To BY. from DA. c. to CJ. Hs. DA5/M7.11.25. NEW PHANTOM SHOCK DAMPERS. X.8520 X.235 We send herewith N.sch.2085 shewing the proposed new hydraulic shock damper. The position on the chassis is… | ||
| Scan032 | The mounting instructions and specifications for a 40/50 hydraulic shock absorber. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X235 DA3/M13.11.25. 40/50 HYDRAULIC SHOCK ABSORBER. X. 235 X. 8520 We send herewith N.sch.2089 shewing the mounting of the new hydraulic shock absorber on the frame. The… | ||
| Scan033 | Bump test of hydraulic shock absorbers, which failed due to distorted aluminium back plates. | ||
| View original record | R.H. 408a (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 4235 REF Hs/Rml/LG25.11.25. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. 78520 R-R HYDRAULIC SHOCK… | ||
| Scan034 | Cross-sectional diagram from a hydraulic shock damper endurance test, noting back plate distortion and a slight oil leak. | ||
| View original record | R.R. HYDRAULIC SHOCK DAMPER ENDURANCE TEST BACK PLATE DISTORTION SLIGHT OIL LEAK W-A-R. 25/11/24 [Stamp] ROLLS-ROYCE LTD PRINT-ROOM 25 NOV 1925 DERBY [Watermark] DICKINSON BOND MADE IN | ||
| Scan035 | New Phantom front axle design to address steering wobbles. | ||
| View original record | To BY. from R. c. to CJ. BJ. Hs. X235 R3/M16.11.25. RE. PHANTOM FRONT AXLE. (STEERING WOBBLES) X.235 X.457 X.8420 X.8430 DA. is sending a drawing of a new complete front axle, of a design we have made… | ||
| Scan036 | Particulars and unique design features of a hydraulic shock damper. | ||
| View original record | To DA.* from R. c. to CJ. BJ. c. to BN. Hs. Mr. Claremont. (handwritten) X235 RL/M20.11.25. RE. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 There are some particulars in connection with the above, which… | ||
| Scan037 | Modifications to a hydraulic shock absorber to prevent air locks when filling with oil. | ||
| View original record | Hs/Rm. X235 BY/HEB17/M.4.2.26. HYDRAULIC SHOCK ABSORBER. IN ACCORDANCE WITH "N" SCH:2085. A short time ago you stated that it was difficult to fill this Shock Absorber with Oil, owing to air locks… | ||
| Scan038 | The completion and testing of the first set of piston-type hydraulic shock absorbers, noting difficulties with trapped air. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. X235 Hs6/LG2. 2. 26. RR. HYDRAULIC SHOCK ABSORBERS. PISTON TYPE. X8520 The first set of these shock absorbers are completed and… | ||
| Scan039 | Preliminary tests of hydraulic shock absorbers, detailing high-frequency chatter caused by trapped air. | ||
| View original record | Expl: Report. Expl: No. 1235 Ref. Hs/Rml/LGS.2.26. To R. From Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. R-R HYDRAULIC SHOCK ABSORBERS. X235 18520 Wehave carried out a number of… | ||
| Scan040 | Issues with a shock absorber design, detailing air re-entry problems and current loading specifications. | ||
| View original record | contd :- -2- Unfortunately, if the shock absorber is inverted or run on the road, air seems to re-enter this chamber either from the filling chamber or from somewhere else in the system where it has… | ||
| Scan041 | Request to test piston-type hydraulic shock absorbers. | ||
| View original record | To Hs. from R.&E. c. to CJ. BY. X235 R2/M23.1.26. RE. HYDRAULIC SHOCK ABSORBERS. PISTON TYPE. X. 235 X. 8250 Kindly get these tested, and repert as soon as possible. R. | ||
| Scan042 | The rear springing and tyres of the 7-EX car, with recommendations for improvements using semi-balloon tyres and hydraulic shock dampers. | ||
| View original record | To Hs. } FROM R. To EX. } LE CANADEL. To DA. } c. to CJ. BJ. RG. #59 X235 RL/A4. 2. 26. RE. REAR SPRINGING - TYRES. X.8410 X.457 X.8992 X.8820 X.4117 X.235 7-EX R.R. CAR AT LE CANADEL. I find the… | ||
| Scan043 | Tests of hydraulic shock absorbers to prevent high-speed steering wobble. | ||
| View original record | Expl: Report. Expl: No. 4235 Ref. Hs/RmS/LG9. 2. 26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to OY. Wor. R-R HYDRAULIC SHOCK ABSORBERS. X235 X457 We have carried out a series of… | ||
| Scan044 | Tests conducted on hydraulic dampers and tyres to eliminate vehicle wobbles. | ||
| View original record | contd :- -2- hydraulic dampers would cope with the wobbles set up by these tyres. We then tried 7.25" tyres at 20 lbs/sq.in. We found that we were unable to eliminate the wobbles produced by these… | ||
| Scan045 | Potential design issues and solutions for a hydraulic shock absorber valve. | ||
| View original record | To us. from DA. +235 DA2/M10.2.26. RE. HYDRAULIC SHOCK ABSORBER. & X.8520 X.235 One suggestion is that the valve face may be too wide so that when the valve opens there is a sudden increase in its… | ||
| Scan046 | Air getting trapped in a valve piston and potential remedies. | ||
| View original record | contd :- -2- We shall send you this valve as soon as it is finished. We can see that air can be trapped in the valve chamber in the piston, and we propose to send you some suggestions as to how this… | ||
| Scan047 | Method to eliminate chatter in hydraulic shock absorbers, detailing initial test results and weight. | ||
| View original record | To R. from Hs/Rn. c. to CJ. BJ. c. to RG. E. c. to DA. EY. c. to Wor. 7235 Hs/RnB/LG12. 2. 26. HYDRAULIC SHOCK ABSORBERS 78520 We believe that by taking sufficient care in filling the shock absorber,… | ||
| Scan048 | Blueprint showing a suggested modification to a hydraulic shock absorber. | ||
| View original record | REMOVE PLUG & LOAD UP WITH OIL FOR THE PURPOSE OF EXPELLING THE AIR FROM BEHIND THE VALVE. SUGGESTED MODIFICATION TO HYDRAULIC SHOCK ABSORBER. ROLLS-ROYCE Limited. PRINT ROOM 12. FEB 1926 DERBY. | ||
| Scan049 | Novel patented combinations for hydraulic shock dampers to improve car suspension. | ||
| View original record | To DA. RG. E. HS. BY. FROM R. LE CANADEL. 4235 R1/M13.2.26. c. to CJ. BJ. Wor. MR. Claremont. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 I think these should have prompt attention as they are urgently… | ||
| Scan050 | List of features and proposed modifications for double acting shock absorbers. | ||
| View original record | contd :- -2- (1) These are the first double acting shock absorbers with unequal action, preferably 3 or 4 to 1. (2) They are reasonably independent of the viscosity of the fluid. (3) They are arranged… | ||
| Scan051 | Failure of rivets on Hartford shock absorbers on Lord Montagu's car. | ||
| View original record | To R. from Hs. c. to CJ. c. to DA. x235 Hsl/LG13.2.26. x4426 x8520 SHOCK ABSORBER FAILURE ON LORD MONTAGU'E CAR. The failure of the rivets on the Hartford shock absorbers is unusual. The usual failure… | ||
| Scan052 | Failure of rivets on Hartford shock absorbers on Lord Montagu's car and potential replacements. | ||
| View original record | To R. from Hs. c. to CJ. c. to DA. X235 Hal/LG13.2.26. SHOCK ABSORBER FAILURE ON LORD MONTAGU'S CAR. 44426 +8520 The failure of the rivets on the Hartford shock absorbers is unusual. The usual failure… | ||
| Scan053 | The failure and modification of hydraulic shock absorbers. | ||
| View original record | Expl: Report. Expl: No. 4235 Ref. Hs/Rm3/LG17.2.26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to BY. DA. c. to Wor. HYDRAULIC SHOCK ABSORBERS. t457 Image labels: FRACTURED LINKS. LINK HOLES WORN… | ||
| Scan054 | Improvements to Phantom car steering and the persistent issue of high-speed wobbles. | ||
| View original record | To Sa. from Hs. c. to CJ. 4235 Hs3/LG17.2.26. STEERING WOBBLES. +457 CJ. has passed on to us a letter in which you point out the faults with the steering fitted to your Phantom car. During the last… | ||
| Scan055 | High-speed steering wobble, the influence of low-pressure tyres, and planned improvements like hydraulic dampers. | ||
| View original record | contd :- -2- We have a Hispano car and on this we can produce high speed wobbles. We have recently tried a new Cadallic car which developed the high speed steering wobble during the trial run. We know… | ||
| Scan056 | The causes of and solutions for high speed steering wobbles. | ||
| View original record | contd :- -3- about to build up, leads us to believe that what you may be feeling is road shocks which are transmitted to the steering wheel. It is not necessary to travel over a rough road to produce… | ||
| Scan057 | Hydraulic shock dampers, their benefits, and considerations for low-pressure tyres. | ||
| View original record | Hs To DA. } FROM R. BY. } Le CANADEL. c. to CJ. BJ. Wor. c. to RG. E. PN. CWB. X235 R2/M19.2.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 X.457 I have already written to press these forward for both… | ||
| Scan058 | Tests to determine the minimum loading for hydraulic shock dampers to prevent high-speed steering wobbles. | ||
| View original record | Expl: Report. Expl: No. 4235 Ref. Hs/Rm3/LG20.2.26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to OY. Wor. HYDRAULIC SHOCK DAMPERS. X457 We carried out tests to ascertain what the… | ||
| Scan059 | Modifications to hydraulic shock dampers to address valve chatter and other issues. | ||
| View original record | X. 235 To BY. from DA. c. to CJ. Hs. DAL/M22. 2. 26. HYDRAULIC SHOCK DAMPERS. We send herewith A.Sch.2145 shewing the modifi- cations which R. has suggested to overcome the valve chattering and to… | ||
| Scan060 | Use of three different tyre sizes in wheel wobble tests and their characteristics. | ||
| View original record | To BJ. from Hs. c. to EY. c. to Wor. x235 Hs1/LGE2. 2. 26. Y3809 x235 WELL BASE WHEELS AND TYRES. With reference to BJ3/E17.2.26. We believe a certain amount of the confusion has arisen because we are… | ||
| Scan061 | The Experimental Department's views on well base tyres, rims, and hydraulic dampers to eliminate wheel wobble on the Phantom. | ||
| View original record | contd :- -2- differentiated between these different section tyres, but we realise it is difficult to follow unless one knows the whole history of the problem. The Expl: Dept's present views on well… | ||
| Scan062 | Proposal to send a pair of hydraulic shock absorbers to be fitted to the 7-EX experimental car. | ||
| View original record | To R. from Hs. c.c. to CJ. c.c. to Da. X235 Hs4/LG24. 2. 26. HYDRAULIC SHOCK ABSORBERS. We propose sending to you at the end of the week, a pair of these shock absorbers so that they can be fitted to… | ||
| Scan063 | The testing of hydraulic shock absorbers, noting a lever fracture and subsequent modifications. | ||
| View original record | Expl: Report. Expl: No. X235 Ref: Hs/Rm1/LG24. 2. 26. To R. from Hs/Rm. c. to CJ. BJ. c. to E. RG. c. to DA. BY. c. to Wor. HYDRAULIC SHOCK ABSORBERS. X235 X8570 These shock absorbers fitted with… | ||
| Scan064 | Failure and improvement of a hydraulic shock damper, including settings for different axles and a debate on terminology. | ||
| View original record | DA. To Hs/Rm. } FROM R. BY. c. to CJ. BJ. E. X235 R3/M25.2.26. HYDRAULIC SHOCK DAMPER. X.457 X.235 The failure of the link is not serious. It is possibly due to fracture in rivetting, and could easily… | ||
| Scan065 | Phantom's suspension, noting it rides worse than the Silver Ghost and proposing solutions involving springs, shock dampers, and tyre pressure. | ||
| View original record | DA } To BY. FROM R. HS. LE CADEL. c. to CJ. BJ. Wor. c. to RG. E. +235 R2/M25.2.26. PHANTOM SUSPENSION. X. 8410 X. 4565 X. 8520 X. 235 Mr. Johnson remarks that the Phantom rides worse than the Silver… | ||
| Scan066 | Report comparing the performance of the New Phantom and Silver Ghost models, focusing on ride quality, noise, and speed. | ||
| View original record | contd :- -2- but bad management of rear road spring stiffness and highly pumped tyres will ruin all, and spoil everything that can be done. Body noises of all kinds are reduced and the life of bodies… | ||
| Scan067 | Hydraulic shock absorbers, detailing concerns about significant oil leakage from the lever shaft gland. | ||
| View original record | Expl: Report Expl. No. X235 Ref. Hs/Rml/LG25. 2. 26. To R. from Hs/Rm. c. to C.J. BJ. c. to RG. E. c. to DA. BY. c. to Wor. HYDRAULIC SHOCK ABSORBERS. X 8520 While the mechanical features of the RR.… | ||
| Scan068 | The use of ordinary engine oil in shock absorbers following unsuccessful tests with packings and pressings. | ||
| View original record | contd :- -2- We have done the best we know of with different packings and strengthened pressings but with no appreciable result. We are using ordinary engine oil in the shock absorbers,we think it is… | ||
| Scan069 | The effectiveness of hydraulic shock dampers in reducing high-speed steering wobble and their implementation for testing. | ||
| View original record | To DA. BY. HS. FROM R. LE CANADEL. c. to CJ. E. BJ. RG. Wor. X235 R2/M26.2.26. HYDRAULIC SHOCK DAMPERS. X.235 X.457 X.4565 It is indeed good news that the above are so effective to reduce high speed… | ||
| Scan070 | Requesting modification to the shock damper mounting due to a new valve design. | ||
| View original record | To BY. Hs. } FROM DA. X235 DA3/M27.2.26. RE. RR. HSOCK DAMPERS. X. 235 X. 8520 Regarding N.sch.2145, we wish to point out that the new type of valve makes the rear bolt holding the shock damper body… | ||
| Scan071 | Pressing for the adoption of hydraulic shock dampers, semi-balloon tyres, and a lighter front axle for Phantom & Goshawk cars. | ||
| View original record | To Hs. FROM R. LE CANADEL. BY. DA. c. to CJ. BJ. Wor. /235 RL/M27.2.26. RE. PHANTOM & GOSHAWK LOW PRESSURE TYRES. X.4565 X.235 X.5410 (crossed out) X457 X.5410 (crossed out) X8420 I am pressing for… | ||
| Scan072 | Oil leakage from shock dampers and potential solutions. | ||
| View original record | To Hs. from Da. 1235 DA4/M27.2.26. RE. R-R SHOCK DAMPERS. X.235 X.8520 With reference to your report Hs/Rnl/LG25.2.26, we presume you will have tried a vent in the reservoir. It seems to us that this… | ||
| Scan073 | Telegram suggesting modifications for dampers, including a breather, different pistons, or a cavity with a return between the bearing and gland. | ||
| View original record | POST OFFICE TELEGRAPHS. X.235 Prefix: sc Handed in at: 10 16B M. Office of Origin and Service Instructions: Lavendon 12/ 1800 To: L Roycar Derby Angleterre Message: Dampers may require breather or… | ||
| Scan074 | Oil leakage issues and experiments on hydraulic shock absorbers. | ||
| View original record | To DA. from Hs/Rm. Hs/Rm1/LG1.3.26. RR. HYDRAULIC SHOCK ABSORBERS. With reference to DA4/M24.2.25. We have not tried the means of trapping oil as it comes out of the gland and running it back into the… | ||
| Scan075 | Hydraulic shock dampers, including analysis of a broken link, comparison with Lanchester's patent, and suggestions for design improvements. | ||
| View original record | To DA. Hs. } FROM R. BY. LE CANADEL. √235 R1/M.3.26. c. to Mr. Claremont. c. to CJ. BJ. Wor. c. to RG. E. HYDRAULIC SHOCK DAMPERS. X.235 X454/441 The Essex broken link was almost certainly either… | ||
| Scan076 | Continued page discussing improvements proven on the 20 HP model for steady riding with balloon tyres. | ||
| View original record | contd :- -2- we have lately proved on the 20 HP., which asked for still more effective ones for the steady riding of the car with balloon tyres.) R. [Watermark: JOHNSON BROS] | ||
| Scan077 | Suggestions to overcome oil escaping from hydraulic shock dampers. | ||
| View original record | To R. from DA. c. to CJ. BY. Hs. X235 DA3/M2.3.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 Referring to the oil escaping through the rocker shaft gland when it has been thoroughly heated up, we send… | ||
| Scan078 | Design improvements and considerations for hydraulic shock dampers. | ||
| View original record | To DA. BY. HS. } FROM R. c. to CJ. BJ. RG. c. to E. X235 R1/M2.3.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 The strengthening of the two parts that have failed is obvious and easy. The high… | ||
| Scan079 | Large gauze disc for filling to avoid using a smaller, easily lost filter. | ||
| View original record | contd :- -2- Could we afterwards try a large gauze disc under- neath, and fill from a stand pipe through it from the under side. Do not have a fussy little filter that would get left behind, or lost.… | ||
| Scan080 | Fitting of shock dampers, proposals for a 40/50 back axle, and a suggested test run. | ||
| View original record | To Hs. from DA. X235 (handwritten) DA5/M2.3.26. X.235 X.E770 Referring to R's suggestion that Mr. Hardy and I should visit Derby if necessary, we both think that for the moment, as far as getting… | ||
| Scan081 | Benefits of hydraulic shock absorbers, their effect on springing, steering, and wheel wobble. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Cy. Wor. 235 HS7/LG3.3.26. HYDRAULIC SHOCK ABSORBERS. x235 x457 Although we have made no remarks on the effect of these shock absorbers on… | ||
| Scan082 | Report discussing the effects of front-wheel brakes and hydraulic shock absorbers on steering wobble and road shocks. | ||
| View original record | contd :- -2- of the axle without it getting into a period. This is supported by the fact that whenever we have increased the tendency to wobble we have increased the road shocks felt on the steering… | ||
| Scan083 | Road test of hydraulic shock dampers to determine the amount of oil passing through the gland. | ||
| View original record | Expl: Report. Expl. No. 235. Hs/Rnl/LG3.3.26. To R. from Hs/Rm. c. to CJ. BJ. c. to DA. RG. c. to E. BY. c. to Wor. RR. HYDRAULIC SHOCK DAMPERS. X8570 We have carried out a road test to determine the… | ||
| Scan084 | Troubleshooting efforts for oil leaks and performance issues in a damper system. | ||
| View original record | contd :- -2- oil come out of the main chamber it would be just as likely to blow it out of this connection as drain it away. We are trying it however with reduced falling level to see if it overcomes… | ||
| Scan085 | Suggestions for improving hydraulic shock dampers to reduce oil leakage through the rocker shaft. | ||
| View original record | To BY. from DA. c. to CJ. hs. X235 DA3/M4.3.26. RR. HYDRAULIC SHOCK DAMPERS. X. 235 X. 8520 We send herewith N.sch.2153. This shews some suggestions which we have sent to R. for the object of reducing… | ||
| Scan086 | Temporary modifications to hydraulic shock absorbers for a car heading to Le Canadel. | ||
| View original record | To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. Handwritten: X235 Hs/Rm/LG4.3.26. HYDRAULIC SHOCK ABSORBERS. Handwritten: X235 V8520 In order to endeavour to get as many of the… | ||
| Scan087 | Proposing a test rig for hydraulic shock dampers to compare gland packing efficiency. | ||
| View original record | To RHC. from Hs/Rn. X235 [Text associated with sketch] LEVER SHAFT NOT CONNECTED INTERNALLY TO LEVER THEN CAN BE ROTATED TO REPRODUCE SHOCK ABSORBER MOVEMENTS PRESSURE GAUGE TYRE VALVE. PUMP UP TO… | ||
| Scan088 | Design sketch with annotations for a spring-loaded gland for a hydraulic damper. | ||
| View original record | SPRING LOADED GLAND, HYDRAULIC DAMPER. INCREASED SET IN LEVER TO ACCOMODATE LONGER SHAFT RING TURNED OUT OF M.S. PRESENT BUSH AND CASING COUNTERSUNK. TRY 45° ANGLE AND MAKE IT MORE ACUTE IF THIS IS… | ||
| Scan089 | Hydraulic shock-absorbers and their effect on steering-wheel shock and wobble when using lower pressure tyres. | ||
| View original record | X235 CWB21/DN5.3.26. TO CJ c. to BJ FROM CWB Hydraulic Shock-Absorbers. Reference Hs7/LC3.3.26, I consider we should obtain some further information from Hs regarding the effect of fitting lower… | ||
| Scan090 | Technical memorandum discussing oil loss in hydraulic shock dampers, with proposed solutions and design modifications. | ||
| View original record | DA. } To Hs. } FROM R. BY. } c. to CJ. BJ. c. to E. RG. Y235 R1/M5.3.26. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 Hs's memo. received re. oil loss. I wired Derby :- "DAMPERS MAY REQUIRE BREATHER OR MORE… | ||
| Scan091 | Piston fit, discharge vents, and potential design modifications compared to Houdaille. | ||
| View original record | contd :- -2- It may be better to make both pistons fit as closely as possible, and still use some discharge vent covered by valve. I hope something that will work satisfactorily can be made from what… | ||
| Scan092 | Hydraulic shock dampers, addressing 'chattering' and oil leakage issues. | ||
| View original record | X235 Expl: Report. Expl: No. 235 Ref. Hs/Rm1/LG6.3.26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to OY. Wor. HYDRAULIC SHOCK DAMPERS. Chattering. We have tried a temporary… | ||
| Scan093 | Test of oil thermal expansion, explaining why shock absorbers leaked during testing. | ||
| View original record | contd :- -2- at atmospheric temperature. We then placed a flat cap on the top (in place of the slightly domed cap at present fitted), carrying a thermometer and a fine bore copper pipe. The… | ||
| Scan094 | Shock damper working temperatures, oil expansion, and gland leakage, leading to the proposal of gland efficiency tests. | ||
| View original record | contd :- -3- to determine what working temperature the shock dampers are likely to attain. We find that on a bad English road the dampers take up a temperature between 5°C and 10°C above the… | ||
| Scan095 | Analysis of oil leakage from a shaft gland, comparing a standard felt-packed gland with a spring-loaded version. | ||
| View original record | contd :- -4- casing is regulated by burners. It is found that a really good shaft bearing at 10°C becomes quite slack at 50°C and that this rise in temperature in consequence greatly facilitates the… | ||
| Scan096 | Road tests for a spring-loaded gland and asbestos packing. | ||
| View original record | contd :- -5- We are carrying out tests on the road with the spring loaded gland. Also further tests with asbestos types of packing. Hs/W.,A. Robotham. | ||
| Scan097 | New asbestos and graphite packing material for shock dampers, which proved superior to felt under testing. | ||
| View original record | To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. XE35 Hs/Rm2/LG8.3.26. SHOCK DAMPERS. X8520 We have found a packing composed of asbestos and graphite which is very much better… | ||
| Scan098 | Requesting to fit a pair of tested hydraulic shock dampers to vehicle 4-YG. | ||
| View original record | To RHC. from Hs/Rm. X235 Hs/Rm1/LG9.3.26. HYDRAULIC SHOCK DAMPERS. We have one of the original pairs of these dampers with which we have been running tests on the bump. We should be obliged if you… | ||
| Scan099 | Implications of fitting hydraulic shock absorbers, particularly in relation to steering. | ||
| View original record | To C.J. from Hs. c. to B.J. c. to CWB. 4235 Hs3/LG10.3.26. HYDRAULIC SHOCK ABSORBERS. 4235 X8430 CWB21/INS.3.26. We will certainly let you have further information on this matter as soon as it is… | ||
| Scan100 | Modifications and testing procedures for hydraulic shock dampers. | ||
| View original record | To RHC. from Hs/Rm. Y235 Hs/Rm1/LG10.3.26. HYDRAULIC SHOCK DAMPERS. With reference to the dampers at present being fitted up for R. at Le Canadel and the pair to be run on the 20 HP. to be taken down… | ||
| Scan101 | Querying the provision of springs to adjust loading specifications. | ||
| View original record | contd :- -2- to enable him to go ± 10 lbs. on the higher loading and ± 5 lbs. on the lower loading. Can we provide him with springs to enable him to do this? Hs/Rn. | ||
| Scan102 | Development and production strategy for hydraulic shock dampers, referencing different design schemes. | ||
| View original record | 3-0 11/3/26 X238 Ds. c. Hs. G. BY/HSB. BY6/H. 11.3.26. HYDRAULIC SHOCK DAMPERS. -------------------- In order that you may understand the position as we view it at Derby at the moment, I am… | ||
| Scan103 | Pushing forward with an experimental scheme for new dampers pending formal sign-off. | ||
| View original record | - 3 - moment, and that therefore if and when you supply us with new dampers based on R1/M.b.3.25. we shall treat this as an improvement to be brought on later, but intend to push the scheme we are… | ||
| Scan104 | Experimental modifications to hydraulic shock dampers. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X235 DAL/ML.3.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 Herewith we send N.sch.2159 shewing further experimental modifications to the shock damper asked for by R. (1)… | ||
| Scan105 | Design improvements and issues for hydraulic shock dampers. | ||
| View original record | To DA. & BY. from R. c. to HS. E. Y235 RL/M12.3.26. RE. HYDRAULIC SHOCK DAMPERS: X.235 N.SCH. 2153. X.8520 We must try to get this right without altering the leading dimensions. (1) I cannot… | ||
| Scan106 | The effects of hydraulic shock dampers on riding comfort and steering, specifically addressing high-speed wobble. | ||
| View original record | Expl: Report: Expl: No. 235 Ref. Hs/Rm/LG12.3.26. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. HYDRAULIC SHOCK DAMPERS. +8430 As the main troubles with these dampers now… | ||
| Scan107 | Continuation page of a document discussing continental roads and speed conditions. | ||
| View original record | contd :- -2- Continental roads and speed conditions to form a true estimate of the benefit likely to be obtained in this direction. Hs/W.A.Robotham. | ||
| Scan108 | Outlining required tests and experiments for hydraulic shock dampers. | ||
| View original record | V235 To RHC. } To Hs. } FROM Hs/Rm. Hs/Rm/LG13.3.26. HYDRAULIC SHOCK DAMPERS. The chief details to be cleared up on this item at present are :- (1) To determine the minimum spring pressure required in… | ||
| Scan109 | Standardization of oil hydraulic shock dampers and the related supply of wheels from the Dunlop Company. | ||
| View original record | X235 1 HS. BYB/H. 15.3.26. OIL HYDRAULIC SHOCK DAMPERS. V3809 I am not wanting to worry you unnecessarily on the above matter, but I would just like to remind you that as soon as you see a way through… | ||
| Scan110 | Pause in development for the hydraulic shock absorber, N.Scheme 2159. | ||
| View original record | X235 [Text struck out] c. BY/HEB. c. Hs. BY3/H. 17.3.26. HYDRAULIC SHOCK ABSORBER. N.SCHEME 2159. ----------------------------------------- Before we attempt to put on test the alterations… | ||
| Scan111 | Design improvements for hydraulic shock dampers, specifically the filter and gland. | ||
| View original record | To DA. BY. HS. } FROM R. c. to CJ. BJ. X235 RL/M19.3.26. RE. RR. HYDRAULIC SHOCK DAMPERS. N. sch. 2159. X.235 X.8520 (1) I like much better the filter cast on the body - i.e. not the separate… | ||
| Scan112 | On unsatisfactory ride quality in the rear seats of a Phantom car and potential solutions. | ||
| View original record | Hs. To BY. BA. } FROM R. AT LE CANADEL. Handwritten: X235 R3/M19.3.26. PHANTOM. UNSATISFACTORY RIDING IN REAR SEATS. X.8410 X.235 X.8820 subject: today (14.3.26) I telegraphed :- "PHANTOM TEST ON… | ||
| Scan113 | Modifications to hydraulic shock dampers, including valve, filter, and gland changes. | ||
| View original record | X235 To BY. from DA. c. to CJ. Hs. DA2/M20.3.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 We send herewith N.sch.2162 shewing R's suggested modification incorporating both high and low pressure… | ||
| Scan114 | Alterations for hydraulic shock dampers on the rear of a Phantom chassis. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X235 DA3/M20.3.26. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 Herewith we send N.sch.2166 shewing the hydraulic shock damper mounted on the rear of the Phantom chassis.… | ||
| Scan115 | Letter from Rolls-Royce of America discussing trials of hydraulic shock absorbers, including details on glands, oil, and steering performance. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X235 Oy4-E-32826 March 28, 1926. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Hydraulic shock absorber Dear Hives: Many thanks for your… | ||
| Scan116 | Letter discussing steering and suspension issues, focusing on the gyroscopic action of front wheels and comparing different shock absorbers. | ||
| View original record | -2- They also stop "snatchy" steering at low speeds. For this reason, and the other tests on the Phantom, we had reached exactly the same conclusion as you have, namely that practically all discomfort… | ||
| Scan117 | Modifications to a hydraulic shock damper design based on external suggestions. | ||
| View original record | Y235 HS. BY6/H. 26.3.26. HYDRAULIC SHOCK DAMPER. I am returning herewith the original letter from Rm. on the Hydraulic Shock Damper, showing certain modifications R. wishes to incorporate. I am also… | ||
| Scan118 | List of nine modifications for a hydraulic shock damper design to go into production. | ||
| View original record | HYDRAULIC SHOCK DAMPER. This item can now go into production with the following modifications to the original design. (1) Inside lever to be of original length but of squarer section especially near… | ||
| Scan119 | New shock absorber design, proposing to replace the current pattern with it. | ||
| View original record | X235 HS. RHO. Mr.Booth has now completed the shock absorber similar to the one you recently instructed, to which we have added the improvements specified in Rm's note to Hs, defining R's views on the… | ||
| Scan120 | Issues with suspension, tyres, and shock dampers, with suggestions for improvement. | ||
| View original record | To Hs. FROM R. BY. LE CANADEL. c. to CJ. BJ. Wor. c. to E. RG. PN. c. to CY. NA. CWB. 4235 SUSPENSION AND TYRES OF RR. CARS. X.8410 X.5520 X.8820 X.235 X.8430 X.5410 My last memo. produced some… | ||
| Scan121 | Suspension, shock dampers, tyre pressures, and handling characteristics of various car models. | ||
| View original record | contd :- -2- (c) Such shock dampers as we tried to fit to the 20 HP. i.e. progressively increasing, small movement with no damping, and larger movement with increased effect. (6) One wonders whether… | ||
| Scan122 | Steering, suspension, and tyre performance issues. | ||
| View original record | contd :- -3- set and equal each way). (c) All the ball joints in the steering gear - i.e. 3 or 4 could have lignum vitae pads spring loaded so as to create friction (consistently) and be independent… | ||
| Scan123 | Fitting of hydraulic shock dampers from a 40/50 model to a 20 HP chassis. | ||
| View original record | To BY. from DA. c. to CJ. Hs. X235 DAL/1.4.26. RE. RR+ HYDRAULIC SHOCK DAMPERS ON 20 HP. CHASSIS. X.235 X.5520 Herewith we send N.sch.2173 shewing how we suggest the 40/50 shock dampers should be… | ||
| Scan124 | High-speed steering wobbles on car 7-EX with medium pressure tyres. | ||
| View original record | To Hs. & DA. from R. at Le Canadel. c.c. to CJ. BJ. X255 RE. HIGH SPEE D STEERING WOBBLES. X.457 X.235 7-EX MEDIUM PRESSURE TYRES. X.4565 X.8820 On car 7-EX we find we get these at the following… | ||
| Scan125 | Positioning and specifications for hydraulic shock dampers on a Phantom rear axle. | ||
| View original record | To HS. FROM R. BY LE CANADEL. c. to CJ. BJ. X235 R2/M4.4.26. PHANTOM - HYDRAULIC SHOCK DAMPERS ON X.235 REAR AXLE. N.SCH.2166 X.7520 X.8520 Hs/Rn. and myself tried various positions for the above with… | ||
| Scan126 | Outlining further suspension experiments on the 20 HP, Phantom, and Silver Ghost models. | ||
| View original record | To Hs. from DA. x235 DA3/1110.4.26. SUSPENSION EXPERIMENTS. X.8410 X.9410 X.5410 X.235 This is to confirm one or two points on which it was intended to make further experiments :- (1) To find out… | ||
| Scan127 | Issues with the front springing on the Phantom model compared to the Silver Ghost standard. | ||
| View original record | To DA. BY. Hs. from R. LE CANADEL. c. to BJ. RG. OY. CWB. c. to E. EF. PN. 4235 R2/M11.4.26. RE. PHANTOM SPRINGING. X.8410 X.235 Mr. Olley says Phantom front springing is considerably stiffer than… | ||
| Scan128 | Car centre of gravity and the damping differences between spring and tyre deflection. | ||
| View original record | contd :- -2- A car with the centre of gravity near the back axle, say by removing engine and radiator, and comparison with 20 HP. might prove or condemn this centre of gravity suggestion. Another… | ||
| Scan129 | Copy of a telegram with instructions on modifying a Phantom's suspension and brakes. | ||
| View original record | X235 COPY OF TELEGRAM RECEIVED FROM R. LECANADEL. 13. 4. 26. X. 8410 X. 235 ROYCAR DERBY ENGLAND. BAILEY HIVES NADIN PHANTOM SPRINGING NOTHING SIMPLER THAN REDUCE FRONT SPRINGS TO ORIGINAL STIFFNESS… | ||
| Scan130 | Suspension and springing setup for the Phantom model. | ||
| View original record | To NA. DA. Hs. BY. } FROM R. LE CANADEL. c. to BJ. Wor. ON. EP. CWB. 1235 RE. PHANTOM SPRINGING. X. 8410 X. 4429 X.235 I am not sure that we are adding this up correctly :- (1) I have received no… | ||
| Scan131 | Axle design, road clearance, and suspension components, with a comparison to competitor vehicles. | ||
| View original record | contd :- -2- from more and thinner plates, or of greater length, and fit the best axle control we can. The only good and passable one is that with radius rod under spring. I endeavoured to arrange… | ||
| Scan132 | Difficulties of measuring and comparing vehicle suspension performance, particularly distinguishing it from coachwork characteristics. | ||
| View original record | To R. from Hs/Rm. c. to BJ. RG. c. to E. DA. c. to BY. Na. c. to Wor. Handwritten: X832 X235 Hs/RmL/LG16.4.26. SUSPENSION. Handwritten: X840 74048 X235 We have now done a certain amount of work on… | ||
| Scan133 | Suspension tests, comparing damping, spring strength, and different vehicle models like the Phantom and Lancia. | ||
| View original record | contd :- -2- 20 and 30 m.p.h. All our tests so far go to shew that the factor of primary importance is the amount of damping employed on either the front or the rear of the car. As yet we have not… | ||
| Scan134 | Report comparing ride quality for Phantom and 20 HP models with different shock damper and spring setups on a wavy road. | ||
| View original record | PHANTOM 20 TO 30 M.P.H. ON A SLIGHTLY WAVY MAIN ROAD. Front shock dampers tightened from 25 to 100 lbs. Definitely worse riding in the back of the car. Rear shock dampers - ditto. Much the same result… | ||
| Scan135 | Difficulties and potential solutions for fitting hydraulic shock dampers to the 7-EX model. | ||
| View original record | To Hs.) FROM R. DA.) LE CANADEL. BY.) c. to BJ. Wor. K 235 RL/M17.4.26. RE. RR. HYDRAULIC SHOCK DAMPERS. X.235 X.8410 X.8520 X.8430 We could not fit these to 7-EX satisfactorily because of the second… | ||
| Scan136 | The difficulty met with front bolts and a radiator-engine support fitting. | ||
| View original record | contd :- -2- Unless I am entirely mistaken (but I looked at it for half an hour) those engaged upon this work should have seen the difficulty we have met, the worst thing being the confusion between… | ||
| Scan137 | Improvements and required actions for the Phantom's springing and suspension system. | ||
| View original record | To Hs. } FROM R. BY. Da. } LE CANADEL. c. to BJ. Wor. E. OY. c. to NA. Mr. Fuller. 4235 R2/1118.4.26. PHANTOM SPRINGING. X.8410 X.3900 X.235 X.4429 One or two things seem necessary to make us happy on… | ||
| Scan138 | Continued note on potential causes for poor vehicle ride quality, identifying tyres, 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… | ||
| Scan139 | Quoting a telegram regarding necessary design changes for shock dampers. | ||
| View original record | To DA. FROM Hs. x235 Hs4/LG19.4.26. SHOCK DAMPERS. x8520 The following is a copy of a telegram we have received from R. :- " CANNOT CHANGE SHOCK DAMPERS SATISFACTORILY UNLESS " BOLT CENTRES REDUCED… | ||
| Scan140 | The difficulty of fitting hydraulic shock dampers due to the presence of R-R wing stays. | ||
| View original record | To DA. from Hs. c. to BY. +235 Hs1/LG20.4.26. HYDRAULIC SHOCK DAMPERS. X832 / X899Z With reference to the wire received from R. as regards the difficulty of fitting hydraulic dampers to his car. We… | ||
| Scan141 | Crude method for comparing vehicle suspension riding qualities using water spillage. | ||
| View original record | To R. From Hs/Rm. c. to BJ. RG. c. to E. DA. c. to EY. Wor. c. to Ne. X235 Hs/Rm4/LG20.4.26. RR. 40/50 HP. SUSPENSION. X8410 X5410 We have now evolved a somewhat crude method of comparing the riding… | ||
| Scan142 | Report page comparing riding comfort based on modifications to spring friction, shock dampers, and tyre pressures. | ||
| View original record | contd :- -2- car with ball bearings between the spring leaves. While a little friction does not make it very much worse at this speed, actually the optimum riding condition is with no shock dampers.… | ||
| Scan143 | Test to improve riding comfort by altering the car's centre of gravity and suspension. | ||
| View original record | contd :- -3- advantage gained in the back seats from increasing the initial deflection of the front springs 20% can be more than annulled by exceeding the standard setting of the rear shock dampers by… | ||
| Scan144 | Test report comparing the ride quality of a 20 HP car and a New Phantom using a water spillage measuring device. | ||
| View original record | contd :- -4- chassis with more rigid support and spring deflections throughout arranged to correspond exactly with those on the 20 HP. which gives us such excellent riding. Our present test shewed us… | ||
| Scan145 | Front spring deflection, its effect on ride comfort, and ongoing tests to address high-speed wobbles. | ||
| View original record | contd :- -5- source of complaint. While weaker front springs do not shew up to great advantage under these circumstances, our impressions from driving cars on indifferent and bad road surfaces are… | ||
| Scan146 | Investigation and design for fitting hydraulic shock dampers to various chassis models. | ||
| View original record | To R. from EV. c. to BJ. BY. Hs. /235 EV1/21.4.26. EXEX7-EX - AND HYDRAULIC SHOCK DAMPERS. X.235 X.7520 X.3992 X.8520 Chassis 7-EX was erected and at the coachbuilders before the present work on… | ||
| Scan147 | Chassis suspension, including tyres, road springs, and dampers. | ||
| View original record | To HS. DA. )From R. OY. BY. )Le Canadel. c. to BJ. Wor. Rg. E. c. to C. NA. CWB. PN. c. to EP. Mr. Fuller. RL/M25.4.26. x235 CHASSIS SUSPENSION. X.8410. X8840 This is not intended to contain anything… | ||
| Scan148 | Technical discussion on vehicle suspension, focusing on spring length, stiffness, and the necessity of effective hydraulic dampers. | ||
| View original record | -2- Contd. these are now demanding to be longer, so that we are trying the new models EAC. 1 & 7 with 48" and 45" springs, and even should be find some distinct modification for the front axle system… | ||
| Scan149 | Improving vehicle ride comfort and handling through changes to springs, weight distribution, and braking. | ||
| View original record | -3- Contd. We shall be working to find a design of something more perfect for the front axle control, and have hopes of doing some good in this direction, but at the moment we must make the best of… | ||
| Scan150 | Continued discussion on vehicle suspension, handling characteristics, and potential issues caused by coachbuilders or owners. | ||
| View original record | -4- Contd. There are several other items not mentioned in the foregoing which are rather lengthy to discuss, such as the distance from the road ix of the road spring control causing lateral movements… | ||
| Scan151 | On the progressive development of hydraulic shock dampers, arguing in favour of a restricted vent with a back pressure valve. | ||
| View original record | Ds. To Hs. From R. BY. (Le Candel). X235 R4/M82.4.26. Rec'd at WW evening of 26.4.26. RE HYDRAULIC SHOCK DAMPERS PROGRESSIVE DEVELOPEMENT -X.235. I am rather inclined to favour restricted vent on both… | ||
| Scan152 | Suspension issues on a 20HP car, recommending stiffer springs and hydraulic shock dampers for French conditions. | ||
| View original record | HS. } To DA. } FROM R. BY. } (Le Canadel). X235 R1/M22.4.26. Rec'd at WW. evening of 26.4.26. C. to BJ.Wor. Rge. " CY. NA. " Mr.Claremont. " Mr. Fuller. X5240 X5840 SUSPENSION -10.G.III. 20HP. DOING… | ||
| Scan153 | Preliminary tests of hydraulic dampers for the Phantom suspension system, with a bar chart comparing performance. | ||
| View original record | To R. from Hs./Rm. c.c. to RU. c.c. to BJ. DA. c.c. to SY. Wor. c.c. to Na. Handwritten: V8410 Handwritten: X235 Hs/RmL/LG24.4.26. PHANTOM SUSPENSION! Handwritten: V8410 We have carried out some… | ||
| Scan154 | Requesting the fitting and testing of new hydraulic shock dampers and special brake linings. | ||
| View original record | To RHC. from Hs/Rm. X235 Hs/Rm/LG26.4.26. SHOCK DAMPERS. We are very anxious to obtain a pair of new type hydraulic shock dampers to be fitted on the 20 HP. at present on the bumping rig for test.… | ||
| Scan155 | Modified arrangement for hydraulic shock dampers on the rear of an E.A.C. 8s chassis. | ||
| View original record | TO BY. FROM DA. X235 DA1/M26.4.26. Copy to - BJ. HS. re. HYDRAULIC SHOCK DAMPERS ON REAR E.A.C. 8s. -X.7520. We send herewith N.Scheme 2182. shewing a modified arrangement of the shock damper on the… | ||
| Scan156 | Shock damper settings and weight distribution for the Phantom suspension system. | ||
| View original record | To Hs. ) DA. ) BY. } FROM R. X235 R1/M27.4.26. c.c. to B.J. E. OY. NA. PHANTOM SUSPENSION. X. 8410 DAMPERS AND DISTRIBUTION OF WEIGHT. X. 235 X. 8840 I notice two points that may be escaping notice :-… | ||
| Scan157 | Cabled message regarding hydraulic shock dampers on the front of a Phantom vehicle. | ||
| View original record | To Hs. } To BY. } FROM DA. X235 DA3/M29.4.26. RE. HYDRAULIC SHOCK DAMPERS ON FRONT OF PHANTOM. X.235 X.8520 We have received the following cable from R. " QUITE CONTENT WITH N.SCHEME 2089 DERBY… | ||
| Scan158 | Hydraulic shock damper lever failure on a 20 HP car and the proposed modifications. | ||
| View original record | To R. from Hs/Rm. c. to BJ. RG. c. to E. DA. c. to BY. Na. c. to Wor. V235 Hs/Rm2/LG4.5.26. HYDRAULIC SHOCK DAMPERS. Y58409 We have had a report from France this morning saying that the lever in one… | ||
| Scan159 | Comparing the performance and failure risks of hydraulic versus Hartford shock dampers. | ||
| View original record | To R. from Hs/Rm. c. to BJ. RG. c. to E. DA. c. to EY. Na. c. to Wor. X235 Hs/Rml/LG4.5.26. HYDRAULIC SHOCK DAMPERS. X235 XH476 We observe that the allowable movement of the rear axle from maximum… | ||
| Scan160 | Car controllability issues related to spring flexibility, viscosity effects, and shock damper testing. | ||
| View original record | contd :- -2- Due to the unrestrained flexibility of the springs on one side, the car became quite uncontrollable, and almost left the road. We are of the opinion that with Prices Motorine 'C' there is… | ||
| Scan161 | The required range of movement for hydraulic shock dampers on the rear axle. | ||
| View original record | X235 c. Hs. BY1/H. 8.5.26. HYDRAULIC SHOCK DAMPERS ON REAR AXLE. ------------------------------------- In order to make quite clear the need for large movements on the shock damper fitted to the rear… | ||
| Scan162 | Complaint about the springing of a Phantom Demonstration Landaulet, recommending a refit with the latest hydraulic dampers. | ||
| View original record | To EH. from Hs. c. to Wors. BJ. C. to EP. Handwritten: X235 Hs3/LG13.5.26. SPRINGING OF PHANTOM DEMONSTRATION LANDAULET. NO. 22-MC. Handwritten: X8950 Handwritten: X8410 Handwritten: X235 The… | ||
| Scan163 | Modifications and trials for engine pistons, auto advance, steering, axles, dampers, and magnetos. | ||
| View original record | To Hs. BY. } FROM R. To DA. E. } EFC. X235 RS/M14.5.26. PHANTOM. X.8770 X.8420 X.8820 X.8810 X.235 PISTONS. We have modified the engine pistons in 3 patterns to get over some of the troubles and make… | ||
| Scan164 | Internal report discussing vehicle component design, costs, and market requirements. | ||
| View original record | contd :- -2- the contact spring pressure sound, and altogether we should go very slowly before abandoning the Watford which has proved very reliable and has a better reputation. We must not forget… | ||
| Scan165 | Future hopes for manufacturing improvements and cost savings on specific chassis types. | ||
| View original record | contd :- -3- WHAT HOPES FOR THE FUTURE. Slight manufacturing improvements in design, considerable saving at the Works on cost of production, and thirdly probably considerable saving in the cost of the… | ||
| Scan166 | List of questions arising from a telephone conversation regarding an agreement for 200 sets of shock dampers. | ||
| View original record | K235 RS QUESTIONS ARISING IN BJ'S MIND AFTER READING WOR5/M.15.5.26. GIVEN ME OVER THE TELEPHONE WHEN I RANG HIM UP TO GET HIS AGREEMENT TO 200 SETS OF SHOCK DAMPERS BEING PUT IN HAND.… | ||
| Scan167 | Phantom steering issues, discussing slower pitch worms, lighter axles, and suspension improvements. | ||
| View original record | To Hs. from R. c. to BJ. Wor. c. to BY. RG. CWB. X235 R1/M17.5.26. PHANTOM STEERING. X.8430 X.235 X.8420 X.1052 We must have slower pitch worms on all cars going abroad. We must have large dia. worms… | ||
| Scan168 | The requirement for further piston castings for hydraulic shock absorbers and subsequent pattern alterations for the 40/50 HP chassis. | ||
| View original record | [Strikethrough text] C. Hg/Rm. X235 BY/HEB1/M.17.5.26. 40/50 HP. CHASSIS. FRONT HYDRAULIC SHOCK ABSORBER SEC:7160. REAR HYDRAULIC SHOCK ABSORBER SEC:7150. Kindly note the Experimental Dept. have… | ||
| Scan169 | Cablegram from Springfield to Derby enquiring about the testing of a new front axle and the dispatch of shock absorbers. | ||
| View original record | RRA 500 2m-12-22 40282 CABLEGRAM ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. Date May 17, 1926 Telegraph Company X235 x8420 Please transmit the following message: (NIGHT) To. ROLLS ROYCE DERBY… | ||
| Scan170 | Telegram from Springfield regarding a new front axle, potential design changes, and the dispatch of shock absorbers. | ||
| View original record | RR 144A (50BKS.) (DB 214 6-25) MF 317384 X235 FD ROLLS-ROYCE LTD. STAMP: MAY 18 1926 TELEGRAM RECEIVED BY TELEPHONE. Via commercial cable co 18420 Time Received: 9.36 Date: 19-5-26 To: Royce Derby… | ||
| Scan171 | Modifications to car 7-EX to cure steering wobble and vibration. | ||
| View original record | To Hs. from R. c. to BJ. Wor. c. to RG. BY. X235 R5/M18.5.26. RE. 7-EX ETC. X.8770 X.8430 X.235 X.457 (1) With reference to 7-EX, this car would be a suitable one to fit up with hydraulic shock… | ||
| Scan172 | Instructions for using .375 bolts with spherical seating in hydraulic shock damper levers. | ||
| View original record | BY/HEB. c. Hs. X235 BY4/H. 19.5.26. HYDRAULIC SHOCK DAMPERS. -------------------- R. has instructed us in R3/M. 14.5.26. to use .375 bolts in shock damper lever, and arrange nut and bolt head with a… | ||
| Scan173 | The successful testing of hydraulic shock dampers and a proposal to order 200 pairs. | ||
| View original record | X235 DJ. c. Wor. c. Hs. BY2/H. 19.5.26. SHOCK DAMPERS. (HYDRAULIC TYPE) -------------------------------- The Experimental Dept. have expressed themselves as satisfied with the above in the form tried… | ||
| Scan174 | Approving a new hydraulic shock damper design and requesting an immediate start on production. | ||
| View original record | X235 BYS/H. 19.5.26. O.E.C. [crossed out] c. F.R.H. [crossed out] c. Hs. c. B.J. [crossed out] SHOCK DAMPERS. ------------ P.74807.is now approved, and about to be standardized, the only modification… | ||
| Scan175 | Results of steering tests in Paris, focusing on reducing shocks and eliminating high-speed wobble. | ||
| View original record | To R. from Hs. c. to BJ. E. c. to DA. BY. c. to FH. Wor. X235 Hel/LG19.5.26. STEERING. X8450 X8430 We attach herewith report from GWH. of tests carried out at Paris in conjunction with Mr. Parsons of… | ||
| Scan176 | The use of weak versus strong steering tube springs on the first Phantom chassis to address low-speed wobbles and stiff steering. | ||
| View original record | contd :- -2- The weak steering tube springs were actually fitted as standard on the very first Phantom chassis, but owing to the tendency for low speed wobbles and also to the complaints of stiff… | ||
| Scan177 | Testing and resolving Phantom steering complaints in France. | ||
| View original record | COPY. To Hs. from GWH. RE. PHANTOM STEERING COMPLAINTS IN FRANCE. We tried the steering of the car complained of on a stretch of road, which with the present standard side steering tube springs, the… | ||
| Scan178 | N.Scheme 2186, concerning a strengthened and spherical headed bolt for hydraulic shock dampers. | ||
| View original record | X235 TO BY. FROM DA. C. to - BJ.HS. DA3/M19.5.26. HYDRAULIC SHOCK DAMPERS - X.235. Herewith we send N.Scheme 2186, shewing the strengthened and spherical headed bolt for clamping the internal lever.… | ||
| Scan179 | Letter confirming a cablegram sent to the American branch about a despatch delay. | ||
| View original record | X Copy for H/RM X X235 SEND TO THE U.S.A. IF APPROVED BY B.J X3900 D/BP/Bm4/B 20th. May 1926 Messrs. Rolls-Royce of America Inc. Springfield, Mass. Dear Sirs, We beg to confirm our Cablegram of even… | ||
| Scan180 | Confirming a cabled message about production delays for a new front axle and shock absorbers due to a strike. | ||
| View original record | To OY. from Hs/Rm. X235 Hs/Rm2/LG20.5.26. 78420 We have cabled you as follows :- "FORTNIGHT BEFORE NEW FRONT AXLE ON ROAD STOP SHOCK ABSORBERS DELAYED DESPATCH IN THREE DAYS - HIVES". We regret that… | ||
| Scan181 | Modifying hydraulic dampers to use 4 studs instead of 2 to fix a leakage issue. | ||
| View original record | To DA. from Hs/Rm. X235 Hs/Rml/LG26.5.26. HYDRAULIC DAMPERS. X8520 With reference to your N.sch.2186. While we are altering the pattern to accommodate the larger castellated nut on the bolt, we should… | ||
| Scan182 | Stress tests performed on hydraulic shock dampers, including a comparison with 'Hartford' shock absorbers. | ||
| View original record | Ex.1. Report. X235 Hs/Rm/T26.5.26. To R. from Hs/Rm. c. to BJ. Wor. c. to Rg. E. c. to Da. Ey. c. to Oy. HYDRAULIC SHOCK DAMPERS. X235 X4429 X967 Tests have been carried out to try and smash the rear… | ||
| Scan183 | The performance of hydraulic dampers, comparing different models and analysing oil viscosity effects. | ||
| View original record | Expt. Report (Contd) -2- Hs/Rml/T26.5.26. the friction shock absorber broke. Also by the condition of the spring stops the rebound was not so great with the R.R. dampers as with the Hartfords, in… | ||
| Scan184 | Fluid damping tests, comparing different oils and analysing road test data from a chronograph. | ||
| View original record | Expl. Report (Contd) -3- Hs/Rml/T26.5.26. damper compared with "Price's Motobrine C". The former does not cease to flow until -15°C. The latter at -6°C. approx. We do not think that with "Lovejoy" oil… | ||
| Scan185 | Continued, discussing a rear shock damper arrangement using a steel sleeve. | ||
| View original record | Expl. Report (Contd) -4- Hs/Rml/T26.5.26. at the ball end over the worst of the bumps on the record. We attach a print of a shock damper arrange- ment that we are trying out on the rear. We have… | ||
| Scan186 | Graph comparing the viscosity of Price's Motorine 'C' and Lovejoy Oil against temperature. | ||
| View original record | VISCOSITY COMPARISON PRICE'S MOTORINE 'C' AND LOVEJOY OIL. TEMPERATURE IN °C TIME OF EFFLUX, SECS. LOVEJOY OIL LIMITS OF WORKING TEMPr FOR BRITISH ISLES PRICE'S MOTORINE 'C' | ||
| Scan187 | Design principles and modifications for hydraulic shock dampers. | ||
| View original record | To HS/RM. from R. C.c. to BJ. OY. DA. WOR. C.c. to Mr.M.W. Claremonte. HYDRAULIC SHOCK DAMPERS - X.8410. I am pleased the hydraulic dampers appear to be shewing their superiority over the mechanical… | ||
| Scan188 | Adapting a cover with 4 studs for hydraulic shock dampers. | ||
| View original record | XZ35 TO B.Y. FROM DA. COPY to - HS. DA2/M31.5.26. HYDRAULIC SHOCK DAMPERS - X.235. With reference to Hs/Rm1/LG26526., we sent through a cover with 4 studs on the scheme with the smaller piston, and we… | ||
| Scan189 | On further improvements to hydraulic shock dampers, noting the new design is simpler and suggesting a patent. | ||
| View original record | To Hs/Rm. from R. c. to BJ. BY. Mr. Claremont. X.235. R5/M4.6.26. HYDRAULIC SHOCK DAMPERS. (FURTHER IMPROVEMENTS). We have pleasure in sending this week the improved arrangement of valves in the… | ||
| Scan190 | Modified hydraulic shock damper for an experimental trial. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X.235. DA3/M8.6.26. HYDRAULIC SHOCK DAMPERS. Herewith we send N.sch.2209 shewing a modified form of shock damper which Mr. Royce wishes tried experimentally. The features… | ||
| Scan191 | Cost-effectiveness and necessity of fitting hydraulic dampers to the 20 HP car. | ||
| View original record | X235 To Hs. from BJ. Hydraulic Dampers - 20 HP. BJ2/E8/6/26 With reference to the standardisation sheet concerning 20 HP, hydraulic dampers, as the increase in cost will be £11.4.2 a car - a loss to… | ||
| Scan192 | Letter from the American branch to the English branch regarding the necessity of reaction dampers on the Phantom Engine. | ||
| View original record | X235 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy2-E-6826 June 8th, 1926 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Hives: Reaction Dampers. Will you let me know whether in your… | ||
| Scan193 | Blueprints for a high-pressure valve spring for a front hydraulic shock absorber. | ||
| View original record | Hs/Rm. X235 BY/HEB6/M.9.6.26. 40/50 CHASSIS. FRONT HYDRAULIC SHOCK ABSORBER SEC:7160. Herewith please receive two Blue Prints of:- F.75148 High Pressure Valve Spring. 2 off per chassis. to be produced… | ||
| Scan194 | The comparative testing of hydraulic shock absorbers on a 20 HP chassis. | ||
| View original record | S/W. Hs. X235 CWB8/GM/9-6-26. HS 10 JUN 1926 RECEIVED Re: 20 h.p. Chassis 1644. 10,000 mile test. Hydraulic shock absorbers. A question has been raised by BJ. as to the necessity of our incurring the… | ||
| Scan195 | Further improvements and fitting proportions for hydraulic shock dampers. | ||
| View original record | X235 TO HS. FROM R. R14/M10.6.26. Copy to -BJ. " WOR. " BY. " DA. RR. PATTERN HYDRAULIC SHOCK DAMPERS - (FURTHER IMPROVEMENTS) - X.457. It will be realised that these should never be fitted single… | ||
| Scan196 | Essential nature of hydraulic dampers for preventing high-speed wobbles on the 20 HP car. | ||
| View original record | To BJ. from Hs. c. to Wor. HYDRAULIC DAMPERS. Replying to BJ2/E8.6.26 and BJ1/E9.6.26. In our opinion the hydraulic dampers are an essential improvement on the 20 HP. When we mentioned that the 20 HP.… | ||
| Scan197 | Page 2 of a memorandum regarding the signing of a standardisation sheet by engineers. | ||
| View original record | contd :- -2- engineers of the Company have signed the standardisation sheet without comment and they are the people who know all the reasons for their adoption, is sufficient proof that they are… | ||
| Scan198 | Cable be sent to Mr. Olley in Springfield, U.S.A. regarding front axle tests. | ||
| View original record | To BP. from Hs. +235 Hs1/LG14.6.26. x6420 Will you please send the following cable to Mr. Olley, Springfield - U.S.A. - at commercial rate :- "PRELIMINARY TESTS ON NEW FRONT AXLE ENTIRELY SATISFACTORY… | ||
| Scan199 | Necessity and cost of modifying the 20 HP model to address high-speed wobbles when using medium-pressure tyres. | ||
| View original record | To Hs. from BJ. Hydraulic Dampers. With reference to Hs2/LG11/6/26, it is of course difficult for me to gauge how far any alteration in design is absolutely essential and also how far that alteration… | ||
| Scan200 | Outlining the 10,000-mile test procedure for hydraulic shock dampers, focusing on breather function and oil loss. | ||
| View original record | /235 To GWH. from Hs/Rm. Hs/Rml/LG15. 6. 26. HYDRAULIC SHOCK DAMPERS. X235 10,000 MILES TEST. x7940 We are anxious to know whether a breather is necessary on these shock dampers. We have therefore… | ||
| Scan201 | Procedures for checking shock damper loads, leakage, and troubleshooting potential blockages. | ||
| View original record | contd :- -2- We are supplying you with spring balances so that you may check the load of these shock dampers. As long as the variation is not more than 10%, it should not be necessary to re-fill the… | ||
| Scan202 | Using hydraulic shock dampers to resolve high-speed wobbles on 20 HP and Phantom models. | ||
| View original record | To BJ. from Hs. 4235 Hs1/LG15.6.26. HYDRAULIC SHOCK DAMPERS. X235 X457 Answering your BJ3/E14.6.26. We had a case of high speed wobbles occurring on a car in customers hands on one of the original 20… | ||
| Scan203 | The performance and justification for the extra cost of hydraulic dampers on 20 HP cars. | ||
| View original record | contd :- -2- With the hydraulic dampers, once the setting has been made, there is no reason why it should alter. R. in his R3/M24.7.25 said :- "Many of the 20 HP. cars have given me a very… | ||
| Scan205 | Results and methodology of tests on hydraulic shock dampers. | ||
| View original record | To R. from Hs/Rm. c. to BJ. RG. c. to E. DA. c. to BY. Wdr. c. to OY. X235 Hs/Rm2/LG16.6.26. HYDRAULIC SHOCK DAMPERS. X235 X8410 We have carried out some tests to determine how the load on these shock… | ||
| Scan206 | The factors affecting oil flow resistance through orifices in hydraulic shock dampers. | ||
| View original record | contd :- -2- fixed loading equivalent to 25 lbs/sqin. pressure. From technical books on the subject it appears that the resistance to oil flowing through orifices should be (a) Directly proportional… | ||
| Scan207 | Graph showing hydraulic shock absorber test results, plotting oil flow against oil pressure. | ||
| View original record | RR HYDRAULIC SHOCK ABSORBER TESTS. CURVE SHOWING VARIATION OF OIL FLOW (THRO' HIGH PRESSURE END) WITH PRESSURE. CURVE CONVERTED TO CONSTANT TEMP. OF 20°C. PRICES' MOTORINE 'C' OIL. OIL PRESSURE (LBS… | ||
| Scan208 | Proposal to establish a simple bench test for the glands on hydraulic shock dampers. | ||
| View original record | To RHC. from Hs/Rn. X235 Hs/Rm1/LG18. 6. 26. HYDRAULIC SHOCK DAMPERS. In order to ensure that the gland is satisfactorily fitted up when the hydraulic shock damper leaves the fitters on production and… | ||
| Scan209 | Cover note regarding a document about front shock absorbers received from America. | ||
| View original record | [Illegible stamp] → Hs. X235 CS/C24.6.26. Front Shock Absorbers. ------ We enclose herewith copy of OY1/T-61226 of the 12th inst. received from America today. C. | ||
| Scan210 | Letter discussing the urgent need for effective front shock absorbers for New Phantom and Silver Ghost cars. | ||
| View original record | Oy1-E-61226 June 12, 1926. Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr.F.H.Royce " " " " Mr.E.W.Hives) Dear Sir: Re Front Shock Absorbers 1. We are still awaiting… | ||
| Scan211 | Issues and tests on Lovejoy and R.R. friction-type shock absorbers. | ||
| View original record | Oy1-E-61226 -2- June 12, 1926. 2. After trying every conceivable combination of valves in front and rear Lovejoys on four cars during a period of a month we are forced to conclude that they will not… | ||
| Scan212 | Shock absorber performance, noise, and the effect of changing components. | ||
| View original record | Oy1-E-81226 -3- 4. This gives increased movement of the leathers and less load on the leathers for a given load on the ball. While the shock absorbers can be made to grunt by rocking the car very… | ||
| Scan213 | Test results for various combinations of Lovejoy shock absorber springs and valves on models 39-JG and 69-JG. | ||
| View original record | Oy5-E-6126 June 1st, 1926 To: Mr. Beaver Mr. Nadin Mr. Hulley Mr. Caswell Mr. Southern Mr. Knapton From: Mr. Olley Lovejoy Shock Absorbers Over the weekend we have tried various combinations of… | ||
| Scan214 | Defects with Lovejoys front shock absorbers, detailing pitching and oil foaming issues. | ||
| View original record | -2- The chief defect with Lovejoys in front is an increased tendency to pitch on the wavy asphalt roads. This is very pronounced with 100 lb. springs in front. It is less so with 40 lb. springs, and… | ||
| Scan215 | From BJ discussing the justification for adding expensive hydraulic dampers to the 20 HP chassis. | ||
| View original record | X235 HS To. BY. [struck through] from BJ. Copy to W.r. Copy to Hs. Hydraulic Dampers on 20 HP. Whilst realising that these were necessary to prevent high speed wobbles on the Phantom, as it was such… | ||
| Scan216 | Procedure for pressure testing hydraulic shock dampers for the front and rear of a car. | ||
| View original record | To Sft. from Hs/Rm. c. to Mx. EP. c. to Wor. 4235 Hs/Rm2/LG25.6.26. HYDRAULIC SHOCK DAMPERS. 4235 The cases for the hydraulic shock dampers to be fitted to the front of the car should be tested to a… | ||
| Scan217 | Instructions for testing and servicing shock dampers. | ||
| View original record | contd :- -2- lever moved up and down several times under this pressure. If no leak occurs at the end of ten minutes, the gland may be considered satisfactory. The correct level for the oil in these… | ||
| Scan218 | The testing of hydraulic shock dampers in France using two different types of oil and adjusting settings. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X235 Hs/Rm3/LG28.6.26: HYDRAULIC SHOCK DAMPERS. x7520 x7940 We are sending these dampers to France for test filled with two types of oil.… | ||
| Scan219 | Outlining the test schedule and production status of experimental parts for the 12-EX car destined for France. | ||
| View original record | To BJ: from Hs. c. to Wor. BY. c. to CJ Sg. c. to PN. CMB. X.235 Hs2/LGSG.6:26. X7420 X8420 X7940 X235 12-EX CAR - FOR FRANCE. BJL/E28:6:26. (1) Referring to the list of experimental parts fitted to… | ||
| Scan220 | Adapting India Hydraulic Shock Dampers for 20HP frames. | ||
| View original record | X235 TO BY. FROM DA. C.c to - BJ. HS. Dal/M. 30.6.26. INDIA HYDRAULIC SHOCK DAMPERS. -X.5520. Herewith we send N.Scheme 2222, shewing the adaptation of the original 40/50 shock damper to the 20HP.… | ||
| Scan221 | Technical memorandum discussing the fitting of rear hydraulic shock dampers and associated modifications. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X235 DA4/M6.7.26. EAC.1. HYDRAULIC SHOCK DAMPERS ON REAR. X.7920 X.235 X.9520 We have looked into the question of fitting hydraulic shock dampers to the rear of the above… | ||
| Scan222 | Use of accelerometers to measure riding comfort and g-forces for the Phantom suspension. | ||
| View original record | To R. from Hs/Rm. X235 Ha/Rm/T15.7.26. c. to BJ. Wor. c. to E. Da. c. to RV. Cy. c. to PN. CWB. PHANTOM SUSPENSION. X8410 We have spent a certain amount of time trying to evolve a satisfactory… | ||
| Scan223 | 'water test' method for assessing vehicle riding comfort and comparing results between different models. | ||
| View original record | Contd. -2- on English roads at moderate speeds. Owing to the unreliability of comparisons with accelerometers, we have reverted to the water test which continues to confirm our physical sensations. We… | ||
| Scan224 | Report comparing ride quality with different dampers and suspension setups on various car models. | ||
| View original record | Contd. -3- Hs/Rml/T15.7.26. We are quite aware that this slow speed work makes shock dampers appear unnecessary, and in order to show up the relative merits of suspensions and dampers we are… | ||
| Scan225 | Series of graphs comparing riding comfort in front seats under various conditions at 23 M.P.H. | ||
| View original record | RIDING COMFORT TESTS IN THE FRONT SEATS OF R.R. CARS ROAD SPEED IN ALL TESTS 23 M.P.H. GRAPH I EFFECT OF SHOCK DAMPERS ON CAR RIDING AT FRONT 98 N.K. OPEN TOURING. TYRE PRESS. 40 & 45. HYDRAULIC… | ||
| Scan226 | To halt work on high and low-pressure valve springs for the 40/50 HP chassis hydraulic shock damper. | ||
| View original record | X235 BY/HEB1/M.5.7.26. [REDACTED] C^c Ha/Rm. STAMP: RECEIVED 8 JUL 1926 40/50 HP. CHASSIS. HYDRAULIC SHOCK DAMPER - SECTION 7160. With reference to our memo' BY/HEB2/M.12.6.26, whereby we instructed… | ||
| Scan227 | To cancel the order for one part and double the quantity of another for the 20-HP chassis front hydraulic shock damper. | ||
| View original record | V235 BY/HEB7/M.7.7.26. To Wd. C. Sfc. C. TB C. HE C. My/Mt C. Ms/Wb. C. Err:Dept. C. RHC C. Mr. Scott C. Mr. Gredwall STAMP: RECEIVED STAMP: HB 7 JUL 1926 20-HP. CHASSIS, FRONT HYDRAULIC SHOCK DAMPER.… | ||
| Scan228 | From 'BJ' requesting full information on the testing, design alterations, and production status of hydraulic shock dampers. | ||
| View original record | [Handwritten] HS x235 [Typed] To Wor. from BJ. Copy to Hs. Copy to BT. Hydraulic Shock Dampers. As I am not quite clear on the following points, I should be obliged if you could give me full… | ||
| Scan229 | The introduction of hydraulic shock dampers and ceasing work on friction type dampers. | ||
| View original record | X235 BY/HEB. c. Hs. c. BY/SS. c. MX. c. BY/TMD. BY2/H. 8.7.26. SHOCK DAMPERS. -------------- The Works anticipate being able to bring in the hydraulic shock damper at the end of August. This will mean… | ||
| Scan230 | Standardisation and testing of hydraulic shock dampers on 20 HP and Phantom models. | ||
| View original record | To W.O.R. from Hs. c. to E.Y. X235 Hsl/LG9.7.26. HYDRAULIC SHOCK DAMPERS. X235 Y8520 Y7940 Replying to BJ12/E8.7.26. The following is the Expl: Department's information on this matter :- (1) A… | ||
| Scan231 | Testing of hydraulic dampers on various car models to address ride quality complaints. | ||
| View original record | contd :- -2- out on a 'carriage' type of car as well as the open touring. This is because most of our complaints of springing come from passengers riding in the back of a closed car over the average… | ||
| Scan232 | Readiness of a car and a proposed demonstration of its hydraulic dampers. | ||
| View original record | contd :- -3- This car we epxect will be ready in about a week or 10 days. When we have our covered car ready, we suggest it would be helpful if we demonstrated to Sales how the riding can be affected… | ||
| Scan233 | Positioning and modification of rear hydraulic shock dampers for the New Phantom chassis. | ||
| View original record | c. to Hs. X235 BY/Cghll/G.12.7.26. EAC.1 HYDRAULIC SHOCK DAMPERS ON REAR. ------------------------------------- With reference to Da4/M6.7.26. although the position of the lever and connecting rod… | ||
| Scan234 | Bringing the EAC-1 car to WW to fit hydraulic dampers and a modified lightened axle forging. | ||
| View original record | To R. from HS. c. to BJ. Wor. [crossed out] c. to EG. [crossed out] c. to DH. [crossed out] x235 x8920 Hs3/LG13.7.26. EAC-1 CAR. Although we have not yet fitted the hydraulic dampers to the rear of… | ||
| Scan235 | Size and clearance of buffers for hydraulic shock dampers. | ||
| View original record | To DA. from Hs/Rm. X235 Hs/Rm1/LG13.7.26. HYDRAULIC SHOCK DAMPERS. X235 X8520 We observe that on N.sch.2222, a buffer [strikethrough] is shewn which reduces the clearance by .875". We calculate that… | ||
| Scan236 | Adaptation of a forward support bracket for rear hydraulic shock dampers. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X235 DA2/M16.7.26. EAC.1. HYDRAULIC SHOCK DAMPERS ON REAR. X.9520 X.235 With reference to BY/CGH11/G12.8.26., we enclose N.sch.2235 shewing a slight adaption of the… | ||
| Scan237 | Compression and dimensions of a rubber buffer in a hydraulic shock damper. | ||
| View original record | To Hs. from Da. X235 Da'2/M17.7.26. HYDRAULIC SHOCK DAMPERS. X.235 X.8520 With reference to Hs/Rml/LG13.7.26;, in shewing the clearance we did on N.sch.2222 we followed standard practice, namely, that… | ||
| Scan238 | Modifications to the hydraulic shock dampers on the rear of the EAC.7 chassis. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X235 DA2/M23.7.26. EAC-7 HYDRAULIC SHOCK DAMPERS ON REAR. X.7520 X.235. Herewith we send N.sch.2231 shewing the hydraulic dampers fitted to the rear of the EAC.7 chassis.… | ||
| Scan239 | Letter from Maurice Olley to E.W. Hives thanking him for a report on shock absorbers. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X235 Oy2-E-8326 August 3rd, 1926. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Hives: Many thanks for yours of July 19th Hs1/LG19.7.26 on… | ||
| Scan240 | The availability of a 20 HP car and modifications required for a Phantom car. | ||
| View original record | To Wor. from Hs. Y235 Hs3/LG7. 8. 26 HYDRAULIC SHOCK DAMPERS. Y235 X5410 BJ18/E5. 8. 26. We have already heard from C. asking for a 20 HP. car fitted with these features. We have told him that the car… | ||
| Scan241 | Telegram from Chateauroux requesting available springs for hydraulic dampers. | ||
| View original record | To: Hives Roycar Derby England. Message: Please send available springs to increase low pressure loading hydraulic dampers R. W. Office of Origin: Chateauroux. Time handed in: 1145. Date: 2-4. Words:… | ||
| Scan242 | Steering tests for the 12-EX car in France, investigating issues with Dunlop balloon tyres. | ||
| View original record | To Wor. from Hs/Rm. X235 X7430 X7940 Hs/Rm1/LG18.8.26. 12-EX CAR. Replying to BJ12/D16.8.26 attached. We have carried out a number of tests on the steering of 12-EX car in France. We find that the… | ||
| Scan243 | Phantom steering issues, attributing them to balloon tyres and suggesting hydraulic damping as a solution. | ||
| View original record | To Hs. from R. c.c. to BJ. Wor. c.c. to BY. DA. X235 RE. PHANTOM STEERING. X.8430 X.8420 X.7430 X.235 X.4565 I cannot see why the new axle can have any detrimental effect on the steering of the type… | ||
| Scan244 | Points of agreement regarding steering performance on the 12-EX model, covering a new lighter axle and hydraulic shock dampers. | ||
| View original record | To Hs. from R. c. to BJ Wor. c. to DA. CWB. c. to BY. FN. OY. X235 R1/M20.8.26. RE. STEERING ON 12-EX. X.7430 X.7420 X.235 I understand you agree to the following :- SUBJECT TO PROMPT CORRECTION IF… | ||
| Scan245 | Steering improvements for the 12-EX car, focusing on new front axles and hydraulic dampers to reduce wobbles. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to DA. SY. c. to FN. CMB. c. to CY. R. X235 Hal/LG23. 8.26! STEERING ON 12-EX CAR - RL/M20.8.26. X7430 X235 We are satisfied that the new front axle and the hydraulic… | ||
| Scan246 | Preference for 6.75 inch tyres over 5 inch tyres despite the increased risk of wobbles. | ||
| View original record | contd :- -2- free from the risk of wobbles. We are still keen on the use of 6.75" tyres. If we were owners of R-R cars, we would much prefer 6.75" with the slightly increased risk of wobbles, than the… | ||
| Scan247 | Standardisation of hydraulic dampers on an experimental 20 HP car. | ||
| View original record | To PN. from Hs. X235 Hs5/LG30.8.26. EXPERIMENTAL 20 HP. CAR. X5770 (struck through) X235 The 20 HP. car you tried in London the other day had the standard friction type dampers at the rear. At the… | ||
| Scan248 | Limited free movement of hydraulic dampers and the potential safety issues this could cause with balloon tyres. | ||
| View original record | To DA. from Hs/Rm. X235 Hs/Rm2/LG14.9.26. HYDRAULIC DAMPERS. We notice on N.sch.2262 that the hydraulic dampers only allow for 1/4" free movement of the spring below its normal rebound position when… | ||
| Scan249 | Safety concern with hydraulic dampers and their limited movement. | ||
| View original record | To DA. from Hs/Rm. X235 Hs/Rm2/LG14.9.26. HYDRAULIC DAMPERS. We notice on N.sch.2262 that the hydraulic dampers only allow for ¼" free movement of the spring below its normal rebound position when… | ||
| Scan250 | Updated settings and modifications for hydraulic shock dampers following tests in France. | ||
| View original record | To BY. from Hs/Rm. X235 Hs/Rm4/LG15.9.26. HYDRAULIC SHOCK DAMPERS. X235 X7520 As a result of our recent tests in France, we have decided that the best setting for the front shock dampers is 40 lbs.… | ||
| Scan251 | Confirming the use of compressor oil for new shock dampers and sending a sample for laboratory analysis. | ||
| View original record | To BY. from Hs/Rm. X235 Hs/Rm2/LG15.9.26. SHOCK DAMPERS. X235 X1588 In confirmation of our verbal conversation yesterday, we wish the new type shock dampers to be fitted with compressor oil. As we… | ||
| Scan252 | Responding to a query about the hydraulic shock damper arrangement. | ||
| View original record | TO HS/RM. FROM DA. FILE X235 DA2/M16.9.26. HYDRAULIC SHOCK DAMPERS. Referring to your HS/RM2/LG14926., we are sorry that we do not appreciate the point complained of. On N. sch. 2262., we have shewn… | ||
| Scan253 | Change in oil type and filling procedure for hydraulic shock dampers. | ||
| View original record | V235 aft/M.BROCK. e. Bft. c. Hs. c. RY/AW. c. RY/HSS. BYz/H. 15.9.26. 4-o 16/9/26 SHOCK DAMPERS. ---------------- The Experimental Dept. have informed me in a memo Hs/Rm2/LG. 15.9.26. that it is… | ||
| Scan254 | Proposal to omit the air vent on hydraulic shock dampers. | ||
| View original record | Handwritten: .5-o 19/9/20 Handwritten: X235 Initials: Hs/Rm. BY/HED BY14/H. 17.9.26. HYDRAULIC SHOCK DAMPERS. With reference to the proposal to omit the air vent, I find that we have practically… | ||
| Scan255 | Laboratory report on the properties of a compressor oil sample, including specific gravity, flash point, acidity, and viscosity. | ||
| View original record | PLEASE FILE UNDER SHOCK DAMPER X235 BH [crossed out] c c to Hs/Mr.Robotham. H12/EA22.9.26. Laboratory. Report No.1550. Re Sample of Compressor Oil submitted by Mr.Robotham 17.9.26. The above sample of… | ||
| Scan256 | Letter to the Vacuum Oil Co. Ltd. requesting a suitable oil for a hydraulic damper. | ||
| View original record | X235 Expl: Dept: Hs/Rm2/LG. 22nd. Sept. 1926. The Vacuum Oil Co. Ltd., Caxton House, Westminster, London S.W.1. Dear Sirs, X235 X1588 We wish to recommend one of your oils for filling a hydraulic… | ||
| Scan257 | Letter from the Vacuum Oil Company recommending Gargoyle Mobiloil 'E' for a hydraulic damper. | ||
| View original record | WE DO NOT HOLD OURSELVES RESPONSIBLE FOR LOSSES OR DAMAGE RESULTING FROM DELAY IN FILLING ORDERS CAUSED BY STORM, STRIKES, FIRE, DIFFERENCES WITH WORKMEN OR ANY CAUSE BEYOND OUR CONTROL. X233… | ||
| Scan258 | Fractured rear hydraulic damper bracket and the requirement for a protective shield. | ||
| View original record | To Hs. from Rm. X235 Hs/Rm/LG25.9.26. REAR HYDRAULIC DAMPERS+ With reference to the rear shock dampers. The bracket which broke is F.74768. This fractured as indicated in the attached sketch. Its… | ||
| Scan259 | Requesting viscosity figures for a sample of Mobiloil 'E' oil at various temperatures. | ||
| View original record | To H.L. Laboratory. From Hs/Rm. X235 Hs/Am5/LG27.9.26. X14324 We are sending you a sample of Mobiloil 'E' oil. We should be obliged if you could supply us with figures for the viscosity of this oil at… | ||
| Scan260 | Recommendation for Gargoyle Mobiloil 'E' for use in re-filling hydraulic shock dampers. | ||
| View original record | NW. from Hs/Rn. X235 Hs/Rm1/LG27.9.26. SHOCK DAMPER - OIL. X/588 With reference to your enquiry as to the oil which we shall recommend for customers use for re-filling their hydraulic shock dampers.… | ||
| Scan261 | Query regarding the lack of maintenance and upkeep instructions for hydraulic shock absorbers. | ||
| View original record | S/W. To Hs. Copy to EP. X235 PN5/EH.29.9.26. Hydraulic Shock Absorbers. I do not know whether you have yet issued any detailed instructions in connection with the general maintenance and upkeep of… | ||
| Scan262 | Responding to a report of oil leakage from front shock absorbers, discussing potential causes and solutions. | ||
| View original record | To GY. from Hs/Rm. X235 Hs/RmL/LG29.9.26. RE. FRONT SHOCK ABSORBERS. With reference to your note of the 17th.inst. on the front shock absorbers. We are very surprised to hear that you have had such… | ||
| Scan263 | Vehicle suspension performance, damper settings, and road testing methodologies. | ||
| View original record | contd :- -2- in our dampers in England. We attach a specification and viscosity curve. We should rather like you to try out an oil something like this and let us know what affect it has in very cold… | ||
| Scan264 | Vehicle wobbles, suspension qualities, tyre types, and hydraulic dampers. | ||
| View original record | contd :- -3- complaints are made. We have however detected the slightest improvement with the front spring shackle at the rear. We are in agreement that weight concentrated over the axles give better… | ||
| Scan265 | Standard test procedure for measuring rear riding comfort using water spillage from a container. | ||
| View original record | REAR RIDING COMFORT - STANDARD TEST. Ordinary good main road with a slightly wavy surface. Test stretch 3/4 mile long. Road speed 23 m.p.h. [Diagram annotations:] Final level 20 HP. .270" Initial… | ||
| Scan266 | The testing procedures for hydraulic shock dampers. | ||
| View original record | To Sft. from Hs/Rm. c. to Mx. EP. c. to Wor. COPY. HYDRAULIC SHOCK DAMPERS. The cases for the hydraulic shock dampers to be fitted to the front of the car should be tested to a pressure of 300… | ||
| Scan267 | Instructions for checking and dismantling leaking glands after a road test. | ||
| View original record | contd :- -2- made up if necessary to the correct level. If there are any signs of glands leaking at the end of the road test, these should be dismantled. Hs/Rn. | ||
| Scan268 | Laboratory report on the properties and viscosity of a compressor oil sample. | ||
| View original record | COPY. BY. c. to Hs/Rm. Laboratory. H12/EA22.9.26. Re. sample of Compressor Oil submitted by Mr. Robotham 17.9.26. The above sample of oil has been examined with the following results :- Specific… | ||
| Scan269 | Issuance of information and future notes on hydraulic shock absorbers. | ||
| View original record | W/S PN. c. Hs. X235 5-0 EP9/H30.9.26. re. Hydraulic Shock Absorbers. With reference to your memo PN5/EH29.9.26. the Experimental Department have already issued preliminary information relating to the… | ||
| Scan270 | Recommendation to send spare packings and caps for hydraulic shock dampers to depots for replacement and testing. | ||
| View original record | To BY. from Hs/Rm. c. to Hm. X235 Hs/Rm3/LG30.9.26. HYDRAULIC SHOCK DAMPERS. We recommend that spare packings for glands should be sent round to Depots so that in case of trouble they can replace this… | ||
| Scan271 | Issuing preliminary instructions for hydraulic shock dampers to the Depots. | ||
| View original record | To PN. From Hs/Rm. X235 Hs/Rm2/LG2.10.26. X235 HYDRAULIC SHOCK DAMPERS. With reference to PN5/EH29.9.26. We are issuing preliminary instructions to the Depots in connection with the hydraulic dampers.… | ||
| Scan272 | Recommendations for customers on the maintenance and refilling of hydraulic shock dampers. | ||
| View original record | To BY. From Hs/Rm. c. to BY/N.H.W. X235 Hs/Rm1/LG2.10.26. HYDRAULIC SHOCK DAMPERS. X235 X1528 As a result of further experience with hydraulic shock dampers, we now recommend that customers are… | ||
| Scan273 | The rigging of a front hydraulic steering damper. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to E. Da. c. to Ev. Rg. X235 Hs/RmL/T2.10.26. HYDRAULIC STEERING DAMPER. We have rigged up a front hydraulic shock damper on the steering, as indicated in the… | ||
| Scan274 | Circulating maintenance information on hydraulic shock dampers. | ||
| View original record | To Hm. from Hs. X235 Hs4/LG5.10.26 HYDRAULIC SHOCK DAMPERS. X4572 We attach herewith technical information on the Maintenance of R-R Hydraulic Shock Dampers. We recommend that this is circulated to… | ||
| Scan275 | Maintenance and pressure testing instructions for hydraulic shock dampers, focusing on gland re-packing. | ||
| View original record | MAINTENANCE OF HYDRAULIC SHOCK DAMPERS. Tests have shewn that the hydraulic dampers should not require re-filling in less than 10,000 miles running. We recommend that whenever a car comes into the… | ||
| Scan276 | Instructions and diagram for pressure testing shock dampers for oil leaks. | ||
| View original record | contd :- -2- TO TYRE PUMP PRESSURE GAUGE RUBBER WASHER OIL LEVEL FOR TEST UP TO CAP FACE. 150 lbs/sq.in. and the shock dampers lever moved up and down several times under this pressure. If no oil leak… | ||
| Scan277 | Instructions for shock damper maintenance, oil filling, and load specifications. | ||
| View original record | contd :- -3- from the caps or joints, and before despatch should be carefully cleaned down, the plug removed, and the oil level made up, if necessary, to the correct level. If there are any signs of… | ||
| Scan278 | Laboratory report detailing the specific gravity, flash point, acidity, and viscosity of a compressor oil sample. | ||
| View original record | Laboratory. H12/EA22. 9.26. RE. SAMPLE OF COMPRESSOR OIL SUBMITTED BY MR. ROBOTHAM 17.9.26. The above sample of oil has been examined with the following results :- Specific gravity at 60ºF --------… | ||
| Scan279 | Specifying shock damper loading settings for experimental 20 HP and Phantom cars. | ||
| View original record | To RHC. from EFC. X235 Hs/Rml/T6.10.26. We wish to run all experimental cars with standard shock dampers loading which has been agreed upon for production. Would you therefore please arrange that all… | ||
| Scan280 | Steering wobble issues, the conflict between self-righting and irreversibility, and a proposed patentable solution using a spring on the worm shaft. | ||
| View original record | X235 To DA. HS. } FROM R. c. to BJ. WOR. BY. PN. R2/M6.10.26. STEERING WOBBLES. X.235 X.457 X.8430 If we can eliminate low and high speed wobbles by the use of the new axle, and by the hydraulic shock… | ||
| Scan281 | Despatch of a broken rear hydraulic shock damper suspending bracket. | ||
| View original record | X235 To BP. from Hs. c. to Mt. Hs/Rm3/LG7.10.26. We are sending into the Stores for despatch to WW., for the attention of Mr. Day :- 1 broken rear hydraulic shock damper suspending bracket. No charge.… | ||
| Scan282 | Confirming a telephonic conversation about fitting a car with hydraulic dampers, well base wheels, and tyres. | ||
| View original record | To CWB. from Hs/Rm. X235 Hs/Rm5/LG8.10.26 X235 / X3509 This is xx to confirm our telephonic conversation that, if you have not a Sales covered car fitted with hydraulic dampers you will send one up to… | ||
| Scan283 | Testing of production glands and packing for hydraulic shock dampers, and proposing further tests with different spring and packing combinations. | ||
| View original record | To BY. from Hs/Rm. X8450 X235 Hs/Rm3/LGS.10.26. HYDRAULIC SHOCK DAMPERS. Y235 We have been examining some of the glands on the hydraulic dampers on production. These appear to be very well made and a… | ||
| Scan284 | Requesting an order of stronger springs for the front hydraulic shock damper for experimental purposes on 40/50 HP and 20 HP chassis. | ||
| View original record | X4520 X235 BY/HEB5/M.12/10.26. Hs C. Hs/Rm. RECEIVED OCT 12 1926 40/50 HP. AND 20.HP. CHASSIS. FRONT HYDRAULIC SHOCK DAMPER SEC:7160. X.8520, O/54700, RE STRONGER GLAND SPRINGS. Herewith please… | ||
| Scan285 | Audible knock caused by hydraulic shock dampers. | ||
| View original record | To R. from Hs/Rm. C. to BJ. Wor. C. to RG. E. c. to DA. BY. X235 Hs/Rm2/LG12.10.26. HYDRAULIC SHOCK DAMPERS. We have had a case of hydraulic shock dampers wearing sufficiently to cause an audible… | ||
| Scan286 | The procurement of softer packings for experimental hydraulic shock dampers. | ||
| View original record | Hs/Rm. X235 BY/HEB15/M.12.10.26. HYDRAULIC SHOCK DAMPERS. In your memo' Hs/Rm3/LGs.10.26. you ask us to let you have one or two softer packings, I have obtained 3 of these specially made up by… | ||
| Scan287 | Excessive wear on hydraulic shock damper bushes and proposing a material change to hardened steel. | ||
| View original record | To RHC. from Hs/Rm. X235 Hs/Rml/T19.10.26. HYDRAULIC SHOCK DAMPER - WEAR. Owing to trouble we are experiencing with loss occasioned by the fact that the phosphor bronze bushes supporting the lever of… | ||
| Scan288 | Standardisation of front hydraulic shock dampers. | ||
| View original record | RR 755 REVISED (10H) (DE 444 6-10-25) BM. x235. COMPLETED 20.10.26 STANDARDISATION of CHASSIS PARTS. Date 23.9.26 Description of Parts. FRONT HYDRAULIC SHOCK DAMPERS. Origin. To prevent high speed… | ||
| Scan289 | Cost difference for standardising front hydraulic shock dampers. | ||
| View original record | C O P Y. To Hs. from My/Rb. My/Rb8/N/139A/BJ4.10.26. Standardisation of Chassis Parts. Front hydraulic shock dampers - X.235/7520 Returned herewith above std. sheet with cost filled in. Please note… | ||
| Scan290 | Tests to ascertain the cause of knocks in hydraulic shock dampers, identifying end play in the lever shaft as the issue. | ||
| View original record | To BY. from Hs/Rm. Y235 Hs/Rm2/LG25.10.26. KNOCKS ON HYDRAULIC SHOCK DAMPERS. Y235 We have been carrying out tests to ascertain the cause of the knocks which have occurred on one or two shock dampers.… | ||
| Scan291 | Proposals for managing friction in a new front axle, steering pivots, and clutch. | ||
| View original record | To Hs/Rm, from DA. X/235 DA1/M5.11.26. FRICTION IN NEW FRONT AXLE. X.8300 X.8430 X.8420 X.8425 X.235 With reference to your proposal to increase the friction on the ball ends, increasing the dia. of… | ||
| Scan292 | Letter from America to Derby discussing front shock absorbers, comparing Lovejoy, R.R. hydraulics, and Houdaille types. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X235 Oy3-E-111226 November 12th, 1926 Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Re Front Shock Absorbers Many thanks for yours… | ||
| Scan293 | Vehicle riding characteristics, shock absorbers, and the stiffness testing of road springs. | ||
| View original record | Oy3-E-111226 -2- November 12th, 1926 Riding. Our trouble is to combine smooth riding at speeds below 25 m.p.h with reasonable freedom from pitching at speeds from 35 to 65 m.p.h. If the front shock… | ||
| Scan294 | The stiffness of front springs on a new axle pad and its effect on riding. | ||
| View original record | Oy3-E-111226 -3- November 12th, 1926 We found that our front springs on the new axle pad were in some cases stiffened 13%. We made a set of springs which actually had R.'s low limit of 30% stiffness… | ||
| Scan295 | Typed memo from 'R.' to 'Hs.' requesting vehicle modifications and asking technical questions. | ||
| View original record | To Hs. from R. X235 R1/M24.11.26. 7-EX. X. 8600 X.235 X. 8992 If possible will you fit one of the spare wheel carriers at the back, for when there is no luggage, correct auto advance, and possibly a… | ||
| Scan296 | Proposed front axle control system for the Phantom model, including modifications and suggestions for testing. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X235 DA3/M4.12.26. FRONT AXLE CONTROL. X.8005 X.235. X.8420 X.8230 X.8430 We send herewith N.schs. 2293/4 shewing the proposed front axle control, using the spring as one… | ||
| Scan297 | Three improvements for the Phantom steering system, concerning a pendulum lever, friction, and dampers. | ||
| View original record | To Hs. Da. BY, from R. c. to BJ. Wor. X235 RA/M6.12.26. PHANTOM STEERING. X.8430 X.8431 X.235 Naturally the pendulum lever which broke should be strengthened; although it was not broken by fair means… | ||
| Scan298 | Standardisation proposal for rear hydraulic shock dampers. | ||
| View original record | RR 755 REVISED (10H) (DE444 6-10-26) BM. A235 COMPLETED 6.12.26 STANDARDISATION of CHASSIS PARTS. Date 1.10.26 X No. 235 / 7520 / 8520 Drawing No SCH.2181 / No. N SCH.2166 Part List Description of… | ||
| Scan299 | Trial and disadvantages of certain hydraulic shock dampers. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. X235 Hs/Rml/LG10.12.26. HYDRAULIC SHOCK DAMPERS. XT570 We have tried several sets of hydraulic shock dampers having spring controlled… | ||
| Scan300 | Standardization and modification of hydraulic rear dampers for the Phantom model. | ||
| View original record | X235 Hs. BY4/H. 13.12.28. [Stamp: RECEIVED DEC 18 1928] HYDRAULIC DAMPERS FOR REAR. PHANTOM. ------------------------------------- The completed standardization sheet for the above involves… | ||
| Scan301 | Need for double shock absorbers on 40/50 & 20 HP cars prepared for speed. | ||
| View original record | To Hs. from R. c. to BJ. Wor. BY. c. to FN. CWB. OY. X235 R 2/M13.12.26. 40/50 & 20 HP. CARS FOR SPEED. X.469 X.235 X.4426 When you have to prepare cars for speed merchants, I believe we ought to fit… | ||
| Scan302 | Advantages and recommendation for implementing rear hydraulic dampers on the Phantom model. | ||
| View original record | To BY. from Hs. +235 Hs5/LG14.12.26. PHANTOM - REAR HYDRAULIC DAMPERS. +8520 With reference to BY4/H13.12.26. The more experience we have with the hydraulic dampers, the better we like them. We think… | ||
| Scan303 | The use of a shock damper arm as a second coupling for parallel motion on the front axle. | ||
| View original record | X235 RECEIVED Da. c. E. c. Hs. c. BY/HEB. BY15/H. 17.12.26. USE OF SHOCK DAMPER ARM AS SECOND COUPLING FOR PARALLEL MOTION ON FRONT AXLE. Referring to Hs/Rm's sheet and blueprint in which he… | ||
| Scan304 | Performance of hydraulic dampers and rear springs on car 9-G-111. | ||
| View original record | X235 To P.N. from Hs/Rm. Hs/RmL/LG20.12.26. 9-G-111 CAR. X5240 With reference to your telephone conversation this morning. We are surprised to hear that you consider the hydraulic dampers on the rear… | ||
| Scan305 | Authorizing the dispatch of urgent parts for an experimental car to Conduit Street, London. | ||
| View original record | To Wd/Ms. from Hs/Rn. c. Despatch Stores. X235 Hs/Rm1/T21.12.26. We are sending into the Stores for despatch to PN. at Conduit Street, London, 1 Cutout Spring E.54099. 2 Hydraulic Shock Damper Springs… | ||
| Scan306 | Ineffective rear shock absorbers causing road-holding and braking issues on a 20 HP Experimental car. | ||
| View original record | [Stamp: RECEIVED] [Stamp: HS S/W. DEC 22 1926] [Handwritten: X235] To Hs. Copy to OWB. PN1/EH. 22.12.26. 20 H.P. Experimental. Confirming our conversation with Rm. on Monday, I explained to him that I… | ||
| Scan307 | Modifications to the rear shock dampers for improved ground clearance. | ||
| View original record | To BY. from DA. c. to BJ. Hs. X235 DA7/M22.12.26. EAC.7. REAR SHOCK DAMPERS. X.7520 X.235 R. objected to the rear shock damper connecting rods on the car which came down here because of insufficient… | ||
| Scan308 | Experiments and proposed modifications to the Phantom's front axle control damper lever. | ||
| View original record | To BY. from DA. c. to BJ. HS. +235 DA4/M23.12.26. PHANTOM FRONT AXLE CONTROL. X.8240 X.8420 X.634 X.7420 X.235 With reference to the experiments which have been carried out at our request to determine… | ||
| Scan309 | Standardisation sheet regarding the battery box support and tie rod for the 20 HP model. | ||
| View original record | X235 To DAJ. from Hs. c. to BY. Hs2/LG29.12.26. STANDARDISATION SHEET X.5575. V5575 DA2/M24.12.26. The battery box support we wish to standardise is made to N.sch.2191. As at the moment the hydraulic… | ||
| Scan310 | Notice to stop work on damper schemes 2293/4 and 2323 due to the introduction of a new, modified design. | ||
| View original record | BY/AHD. H.C. Hs. BY/CS. X235 BY15/H. 29.12.26. [Stamp: RECEIVED 30 DEC 1926] DAMPER SCHEME WHEN USING R.R. DAMPER IN PARALLEL WITH SPRING FOR PARALLEL CONTROL ON FRONT AXLE. ----------------- The… | ||
| Scan311 | Request to arrange a rear hydraulic damper with specific springs and to check the resulting loading. | ||
| View original record | X235 To RHC. from Hs/Rn. Hs/Rm2/T30.12.26. We should be obliged if you could arrange a rear hydraulic damper with Springs F.74869 High Pressure, and F.75902 Low Pressure, and see what loading these… | ||