Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Specification and usage list for 40/50 model springs, detailing part numbers, dimensions, materials, and vehicle series applicability. | ||
| View original record | 40/50 SPRINGS TABLE 1: PIECE N° | DESCRIPTION | CAMBER AT REST | TYPE OF EYE | MAKER (W=WOODHEAD F=FIRTH) | WHERE MAY BE USED & SERIES | RE-ORDER? | MINIMUM STOCK (DERBY)… | ||
| scan0002 | Specification and usage list for 40/50 model springs, detailing part numbers, dimensions, types, and stock levels. | ||
| View original record | TITLE: 40/50 SPRINGS TABLE HEADERS: PIECE N.º | DESCRIPTION | CAMBER AT REST | TYPE OF EYE | MAKER (W=WOODHEAD F=FIRTH) | WHERE MAY BE USED & SERIES | RE-ORDER? | MINIMUM STOCK (DERBY) TABLE DATA:… | ||
| scan0003 | List of eleven objectives for car improvements, prepared for a board meeting. | ||
| View original record | To B.J. FOR BOARD MEETING. FROM R. c. to Wor. BY. Hs. 48410 R3/M25.5.27. OUR CAR OBJECTIVES. X. 8770 X. 5770 X. 5420 X. 8410 X. 8430 (1) To increase the road clearance on the rear bump, rear tank,… | ||
| scan0004 | Testing chassis 12-EX with altered road springs and shock absorbers for Australian and Continental conditions. | ||
| View original record | To Hs. from Pt. C. to ~~EP~~ C. to ~~DY~~ 8410 Pt2/LG26.5.27. SPRINGING. 7410 This afternoon I tried chassis 12-EX with Rm. in connection with suggested alteration to road springs for Australian… | ||
| scan0005 | Continued report page discussing adjustable friction for vehicle springs in Australian conditions. | ||
| View original record | contd :- -2- should have some of the friction under control and adjustable, this because the varying conditions for which we have to spring in Australia cover a much wider range than is found in this… | ||
| scan0006 | Clarifying the spring specifications for a car destined for Australia, correcting a misunderstanding about its passenger capacity. | ||
| View original record | To BY. from Hs/Rm. X8410 Hs/Rm4/LG27.5.27. Pt's Springing for Australia. X8410 X8990 Confirming our conversation on the subject, we have gone into the question of the springing of Pt's car and… | ||
| scan0007 | Modifications to special springs for a car in Australia. | ||
| View original record | 48410 Order Office. w/s. OWB. F.G. Hs. BY/GWB. D/BP. Hm. Hs BY2/H. 30.5.27. RE 47-AU. - SPECIAL SPRINGS - PT'S CAR IN AUSTRALIA. Since writing BY11/H.20.5.27. further discussion has brought other… | ||
| scan0008 | Technical note on the necessary adjustment of axle buffer clearance for model 47-AU when modifying the springing. | ||
| View original record | X8240 Pt. c.Hs/Rm. ------------- BY3/H. 31.5.27. ------------- MODIFIED SPRINGING. ------------------ One point which of course will have to be attended to when the springs are modified is that the… | ||
| scan0009 | Advocating for fitting Hartford hydraulic shock absorbers to cars intended for the Australian market due to its harsher conditions. | ||
| View original record | X8440 To - B.J. from Pt. Copies to :- HH. EP. Hs. By. War. Ptl/CM31.5.27. dictated 30.5.27. Re - Springing for Australia. I have been going into this matter at Works lately with By., Hm. and EP., and… | ||
| scan0010 | Review of patent No.32913/25 for overcoming rattles in road springs using a threaded sleeve and bush, with Mr. Royce's recommendation for testing. | ||
| View original record | To Hs. from E. c. to BJ. DA. X840 E4/MO.6.27. RE. IMPROVEMENTS IN THE ATTACHMENT X.8410 OF MOTOR VEHICLE ROAD SPRINGS. X.433 We have had submitted to us patent No.32913/25 belonging to a Mr. Douglas… | ||
| scan0011 | Use of 20% stiffer chassis springs for cars in Australia. | ||
| View original record | To BY. from R. c. to BJ. Hs. X 8410 R4/M24.6.27. RE. CHASSIS SPRINGS FOR AUSTRALIA. X. 8990 X. 8410 X. 3900 In reply to your BYll/H22.6.27., I consider that 20% stiffer springs are the maximum… | ||
| scan0012 | Improvement of riding qualities through the optimal distribution of weight. | ||
| View original record | To Hs. from R. c. to BJ. Wor. c. to BY. LHS. c. to OY. X840 R3/M24. 6. 27. RIDING QUALITIES - X. 8410 X. 8400 DISTRIBUTION OF WEIGHT. X. 8840 X. 8600 X. 8300 We have spent considerable time studying… | ||
| scan0013 | Front springing and shock absorbers to improve ride comfort for a client. | ||
| View original record | S/W. Hs. Y8410 CWB1/GM/25-6-27. 103-MC. SPRINGING. The front springs of this car are at present 1156 and 1215 and the car is fitted with an early set of hydraulic shock absorbers which are presumably… | ||
| scan0014 | Specification of chassis springs for cars intended for Australia. | ||
| View original record | RECEIVED JUN 28 1927 Hs Per R.BJ. C.Hs. X-8410 BY14/H. 27.6.27. CHASSIS - SPRING FOR AUSTRALIA. ---------------------------- Referring to R4/M.24.6.27. it occurs to me that I did not make clear the… | ||
| scan0015 | Solution for suspension trouble on car 103-MC, involving fitting springs to hydraulic dampers. | ||
| View original record | x840 To CWB. from Hs/An. Hs/Rm2/LG.7.7.27. 103-MC CAR. x8950. With reference to your CWB1/GM25.6.27. We believe the most satisfactory way of over-coming the trouble on this car is to fit the attached… | ||
| scan0016 | Five key improvements for the riding qualities of 40/50 and 20 HP car models. | ||
| View original record | To Hs. from R. c. to BJ. LHS. c. to PN. Wor. c. to BY. CWB. X840 RL/M9.7.27. RIDING QUALITIES. X.8410 X.235 X.5410 X.8420 X.4565 X.8840 For improved riding qualities of our cars - both 40/50 and 20… | ||
| scan0017 | Performance, sales potential, and development of the 10-EX Blue Sports Phantom. | ||
| View original record | +840 To BJ. from R. c. to Hs. RA/M11.7.27. RE. THE BLUE SPORTS PHANTOM. 10-EX. X.8774 X.8770 My dear BJ., This will be available for Sales to test in about 10 days. I would like Dodd (our Works Expl:… | ||
| scan0018 | Internal report detailing performance, handling, and aesthetic issues of the 10-EX Blue Sports Car. | ||
| View original record | Hs. from R. c. to BJ. BY. 48410 RL/M18.8.27. BLUE SPORTS CAR - 10-EX. X.8774 X.8080 X.8430 X.8410 X.8380 I shall be glad if you will send the above car to WW., when you are satisfied that it is as… | ||
| scan0019 | 'pitching' problem in cars, comparing it to a ship's tipping centre and analysing spring and weight dynamics. | ||
| View original record | XF410 O.W.B. London. C. to Whr. London. L.H.S. " E.P. Derby Hm. " Hs. " You might remember, a few days before I left London for Australia, mentioning the problem of passengers, particularly those at… | ||
| scan0020 | Vehicle suspension dynamics, pitching, and ride comfort, using analogies of a ship and a see-saw. | ||
| View original record | - 2 - I think you will agree that a ship which is trimmed by the head is more uncomfortable than one which is trimmed by the stern in a sea way, that is to say, trimming by the stern is the lesser of… | ||
| scan0021 | Description of the mechanics and astonishingly fast oscillation of a conveyor system with flexible legs. | ||
| View original record | - 3 - legs were carried at their lower ends on the girder an inch or two further forward than their upper attachment to the sides of the conveyor trough giving a rearward angle of perhaps 8 or 10… | ||
| scan0022 | Comparison of rear spring specifications and 'nominal' load calculations between the EAC.7 and Phantom models. | ||
| View original record | Hs. BY. from DA. 18410. DA1/M3.9.27. EAC.7. REAR SPRINGING. X.7410 X.8410 With reference to the question, raised by Hs. while here, of the apparently heavy rear springs needed on EAC.7. compared with… | ||
| scan0023 | Two potential strategies for improving car performance and engines. | ||
| View original record | BJ. from R. c. to Hs. 18410 R7/M5.27. CARS IN GENERAL. X.8770 X.8410 X.5770 X.8771 X.5771 I am coming to London on Thursday the 8th.inst., but shall be employed at Mr. Claremont's office on Royce… | ||
| scan0024 | Modifications to the front springs and rubber buffers for a Sports Phantom. | ||
| View original record | ts8410. Hs. from Da. Dal/M15. 9. 27. SPORTS PHANTOM. X. 8774 X. 8410 This is to remind you that R. wishes the aluminium plate under the front springs approx. .450" thick to be removed altogether. In… | ||
| scan0025 | Suggesting modifications to shock absorber tests to include rear dampers to address vehicle pitching issues. | ||
| View original record | To CWB. from Hs/Rm. X8410 Hs/Rm2/LG27.9.27. HYDRAULIC FRONT SHOCK ABSORBERS. X235 With reference to CWB1/GM23.9.27. We suggest that any further tests you carry out on shock dampers should include the… | ||
| scan0026 | Customer's complaint about car pitching and proposing a solution. | ||
| View original record | X8410 To CWB. from Hs/Rm. Hs/Rml/LG27.9.27. X235 With reference to CWB10/GM23.9.27. We should be interested to know the conditions under which Sir John Latta for the most part uses his cars i.e. is he… | ||
| scan0027 | Clarifying a previous note regarding the necessity of damping to prevent vehicle pitching. | ||
| View original record | To CWB. from Hs/Rn. Y8410 Y235 Hs/Rn1/LG29.9.27. With reference to CWB6/GM27.9.27. My note was badly worded. Obviously to prevent pitching it is necessary to have damping. I meant to convey that a… | ||
| scan0028 | Calculations and method for springing sports cars with 25% stiffer springs. | ||
| View original record | Y8410 To BY. from Hs/Rm. c. to DA. c. to Hm. c. to Mx. Hs/Rm3/LG30.9.27. METHOD OF SPRINGING SPORTS CARS. These cars to be sprung with 25% stiffer springs (1) Definition of a 25% stiffer spring. A… | ||
| scan0029 | Front spring specifications for sports cars, including working stress and deflection. | ||
| View original record | contd :- -2- (6) Actual working stress. The total deflection of a spring used in this manner is 6.4" + 3.3" = 9.7" + .5" for buffer. In other words, the 25% stiffer spring will only be deflected… | ||
| scan0030 | Developments in suspension, steering, and engine heads. | ||
| View original record | Y8410 To OY. from Hs/Rm. Hs/Rml/LG30.9.27. FH+30 I am returning herewith your notes on Suspension which we have read with interest. Thank you very much for letting us have them. I am afraid we have… | ||
| scan0031 | Trial of 10-EX type springs on a closed car body. | ||
| View original record | To CWB. from Hs/Rm. X8410 Hs/Rm2/LE1.10.27. SPRINGING. X8410 X4117 With reference to CWB6/GM29.9.27. We have ordered some 10-EX type springs for 65-EF. Before fitting them to the car, however, we are… | ||
| scan0032 | Altered method of rear springing for four specific cars. | ||
| View original record | To BY. from Hs/Rn. Y5410 Hs/Rn1/LG1.10.27. ALTERED METHOD OF REAR SPRINGING. X4117 We have four cars which we wish to spring at the rear by the method outlined in our Hs/Rn3/LG30.9.27. For all except… | ||
| scan0033 | Test report comparing the lifespan of Silico Manganese and Chrome Vanadium front road springs. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to E. DA. c. to BY. OY. X8410 Hs/Rm1/LG3.10.27. FRONT ROAD SPRINGS. X1333 X4429 We have completed a test on four Silico Manganese front springs and two in Chrome… | ||
| scan0034 | Design, testing, and manufacture of suspension springs in collaboration with an external supplier. | ||
| View original record | Hs/Rm. from DA. 18410 DAL/M3.10.27. X.3900 X.8410 X.4429 SUSPENSION. In reply to Hs/Rm2/LG30.9.27., we return herewith Mr. Olley's notes on road springs. Mr. Royce wishes us to get some springs made… | ||
| scan0035 | Use of American blueprints for 'Phantom' road springs to avoid creating new designs. | ||
| View original record | X.8410 Ba. from By. c.to Hs. c.to Mr. Booth. By6/JS.10.27. "Phantom" Road Springs. Referring to Dal/M29.9.27, it appears to me that we shall adopt parallel control for the front axle on the next… | ||
| scan0036 | Request to obtain two 900 lbs, 25% stiffer springs to specification F.53048 for experimental purposes. | ||
| View original record | To B.Y. from Hs/Rm. X8410 X4429 Hs/Rm1/LG5.10.27. Will you please obtain for us for experimental purposes :- 2 900 lbs. 25% stiffer springs to F.53048 with an initial camber of 3.5". Hs/Rm. | ||
| scan0037 | Instructions for modifying rear road springs on a Phantom chassis, altering the free camber and specifying new piece numbers. | ||
| View original record | C. HS/Rm. x8410 BY/HEB12/M.6.10.27. PHANTOM CHASSIS. CHASSIS 82-LC. SIR JOHN LATTA. CHASSIS 8-EX. EXPERIMENTAL CAR. LONDON TRIALS CAR. STAMP: 20 OCT 1927 In accordance with Hq/Rm1/Lcl.10.27, will you… | ||
| scan0038 | Modification to the rear spring centre trunnion for hand brake rope clearance. | ||
| View original record | BY. from DA. c. to BJ. Hs. X8410 DAL/M13.10.27. EAC.14 REAR SPRING CENTRE TRUNNION. X. 8410 X. 8420 Herewith we send N.sch.2479 shewing the slight modification to the bolt through the centre of the… | ||
| scan0039 | On suspension testing of the 10-EX model, discussing ride comfort, pitching and recommending spring alterations. | ||
| View original record | To Pt. from Hs/Rm. X8440 Hs/Rm6/LG17.10.27. SUSPENSION. X8774 Further tests we have carried out here have shewn that 10-EX is definitely more comfortable at the rear than any of our other cars. The… | ||
| scan0040 | Altered method of rear springing for four specific vehicles. | ||
| View original record | C O P Y. To BY. from Hs/Rm. Hs/RmL/LG1.10.27. ALTERED METHOD OF REAR SPRINGING. We have four cars which we wish to spring at the rear by the method outlined in our Hs/Rm3/LG30.9.27. For all except… | ||
| scan0041 | The specifications for front and rear springs for EAC.14 sports cars. | ||
| View original record | X8410 To BY. from Hs/Rm. Hs/Rm2/LG19.10.27. SPRINGS FOR EAC.14. X8410 X.4429 We anticipate that the springs required for the sports cars will be :- Front. 1000 lbs. free camber 2.10 positive. Rear.… | ||
| scan0042 | Order for new and altered front and rear road springs for specifications SECS: 7020 & 7030. | ||
| View original record | C Hs/Rm X8410 BY/HEB2/M.24.10.27. E.A.C.14. FRONT AND REAR ROAD SPRINGS. SECS: 7020 & 7030. In accordance with Hs/Rm2/LG19.10.27, will you kindly order the following springs.- FRONT SPRINGS.- F77917 4… | ||
| scan0043 | New packing scheme for the front springs on Sports Phantom cars to achieve pivot lean. | ||
| View original record | To BY. from Hs/Rm. X8410 Hs/Rul/LG24.10.27. PACKING UNDER THE FRONT SPRINGS. X8410 X8420 We understand that a complete scheme has been got out for obtaining the pivot lean on the Sports Phantom cars… | ||
| scan0044 | The potential purchase of a second-hand Cottin Desgouttes car for suspension investigations. | ||
| View original record | To Ps. from Hs/Rm. X8210 Hs/Rm5/LG26.10.27. X4532 X8210 We are considering the purchase of a Cottin Desgouttes for suspension investigations. We do not want a new car, we do not mind how far it has… | ||
| scan0045 | Parts list for the Phantom Chassis front springs and fittings, based on American designs. | ||
| View original record | X8410 BY/HEB3/M.26.10.27. PHANTOM CHASSIS. FRONT SPRINGS AND FITTINGS SEC:7020. Further to BY10/G.25.10.27, explaining the position with regard to American Front Springs in Silico Manganese Steel,… | ||
| scan0046 | Steering and engine vibrations with a four-point rigid suspension. | ||
| View original record | X8410 X235 X1634 Hs/Rm3/LG28.10.27. FOUR-POINT SUSPENSION -> RIGID AT THE FRONT AND REAR. STEERING. We noticed a slight improvement in steering joggles with this suspension when the hydraulics were… | ||
| scan0047 | Issue of 'pitching' caused by American type front springs. | ||
| View original record | 48410 To OY. from Hs/Rn. Hs/Rn2/LG28.10.27. X3900 X8410 AMERICAN FRONT SPRINGS. We have now had a considerable amount of experience with the American type front springs on the road. We believe that… | ||
| scan0048 | Potential purchase of a Stutz car and requesting American impressions on its general merits. | ||
| View original record | contd :- -2- a more controlled car at high speeds by this means than with the present type of damping. We are at the present moment contemplating purchasing a Stutz car this being the best American… | ||
| scan0049 | Requested chassis modifications for the first two sports cars. | ||
| View original record | To BY. from Da/EV. c. to Hs. 48410 EV3/M31.10.27. EAC.14. X. 8774 X. 8830 X. 8420 X. 8530 X. 8410 Whilst making the detailed drg. of the coachwork for the fist two sports cars, we came across the… | ||
| scan0050 | Correct buffers and bolts for special rear road springs, replacing standard parts. | ||
| View original record | X8410 C. Hs/Rm. BY/HEB10/M.2.11.27. E.A.C. 14. REAR ROAD SPRINGS SEC:7030. FRAMES AND FITTINGS SEC:7000. With reference to our memo' BY/HEB2/M24.10.27, whereby we ordered up Special Rear Road Springs… | ||
| scan0051 | Comparative suspension tests between semi-elliptic and cantilever sprung 40/50 HP cars. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to BY. OY. X8410 Hs/Rn1/LG2.11.27. EAC.7. & 40/50 HP. SUSPENSION TESTS. X7410 We have been carrying out careful comparative tests of semi elliptic and… | ||
| scan0052 | Testing hydraulics with an increased viscosity factor for improved damping and ride quality. | ||
| View original record | contd :- -2- In order to get reasonable riding at low speeds together with adequate damping for fast touring, we are running hydraulics with an increased viscosity factor practically unaffected by… | ||
| scan0053 | Adjustments to the rear suspension and buffer clearance on the 10-EX sports car. | ||
| View original record | To DA/EV. from Hs/Rm. [Handwritten]: X8210 X8774 X8210 [Struck through] [Typed]: Hs/Rm2/LG5.11.27. In order to get the back of the sports car down, we have been running 10-EX with half an inch off the… | ||
| scan0054 | Test report on the performance of rear springs and hydraulic dampers on car 14-EX. | ||
| View original record | X8410 (crossed out) X235 X8040 (crossed out) Hs/Rm5/LG7.11.27. 14-EX CAR. This car was tested fitted with 1400 lbs. rear springs and hydraulic dampers with 60 lbs. up and down fixed loading and a… | ||
| scan0055 | Axle clearance and suggesting an increase in spring stiffness. | ||
| View original record | Hs/Rm. from DA. c. to DA. X8410 DAL/M11.11.27. EAC.14 SPRINGING. X.8410 X.8830 X.8840 With reference to Hs/Rm2/LG5.11.27., we do not think we can allow the axle to penetrate further into the frame… | ||
| scan0056 | Concerns about the weight of car road springs, comparing American and standard designs. | ||
| View original record | To BY. from Hs/Rm. c. to DA. c. to Wor. [Handwritten]: 48410 Hs/Rm2/LG14.11.27. ROAD SPRINGS. [Handwritten]: X3900 [crossed out] [Handwritten]: X88240 We are very concerned about the weights of our… | ||
| scan0057 | Spring design, weight reduction, and material choices for vehicle suspension. | ||
| View original record | contd :- -2- thick leaf cantilever was eliminated on the rear of the 40/50. Therefore the spring makers have gratuitously added 17 1/2 lbs. to the car weight with no justification because it is… | ||
| scan0058 | Continued discussion on the weight increase of stiffer springs compared to standard springs. | ||
| View original record | contd :- -3- Increase in weight of stiffer spring over standard spring 10.5% whereas we consider we ought to be able to decrease the weight quite 20%. As we are fighting for a few pounds off the axle… | ||
| scan0059 | Suspension springing and damping issues, particularly the problem of hitting the buffers. | ||
| View original record | To DA. from Hs/Rn Hs/Rn4/LG15.11.27. X8410 EAC.14. SPRINGING. X8410 X4426 X235 With reference to DAL/M11.11.27. We observe that you do not want the coachbuilding clearances altered from N.sch.2494 and… | ||
| scan0060 | Delivery and required modifications for fitting new road springs to the 10-EX car. | ||
| View original record | To RHC. from Hs/Rm. Handwritten: X8410 Hs/Rm2/LG16.11.27. 10-EX CAR - ROAD SPRINGS. Handwritten: X8410 (crossed out) Handwritten: X4429 The road springs for the above car have now been delivered. Will… | ||
| scan0061 | The required poundages for front and rear springs for the Phantom Chassis 12-EX. | ||
| View original record | Hs/Rm. X8410 BY/HEB5/M.29.11.27. PHANTOM CHASSIS 12-EX. (FOR 10,000 MILES TEST IN FRANCE). FRONT AND REAR ROAD SPRINGS SEC:7020/30. Kindly note we have been instructed by BY. to order up Front and… | ||
| scan0062 | Implementation of negative camber front springs for the Standard Phantom model. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. Da. c. to BY. OY. Xeritho STANDARD PHANTOM SPRINGING. X8420/X8425 We cannot adopt the front springs with 1" negative camber on the standard car until the… | ||
| scan0063 | Instruction on altering the 40/50 model rear springs to lower the car. | ||
| View original record | X8410 To BY. from Hs/Rm. Hs/Rm3/LG1.12. 27. 40/50 REAR SPRINGS. X8410 (crossed out) X7410 Simultaneously with the altered front spring camber, we wish to drop the rear of the car 1/2". To do this,… | ||
| scan0064 | Specifying the required poundage for the front springs on model 12-EX. | ||
| View original record | To BY/HEB. from Hs/Rm. X 8410 Hs/Rm2/LG2.12.27. The poundage for the front springs required for 12-EX is 1050 . Hs/Rm. | ||
| scan0065 | Instruction for fitting 1650 lbs rear springs and modifying the buffer depth for car 12-EX. | ||
| View original record | To RHC. from Hs/Rm. X8410 Hs/Rm4/LG2.12.27. 12-EX REAR SPRINGS. Will you please fit 2 1650 lbs. springs to this car and at the same time reduce the depth of the buffer to 1/4" less than standard.… | ||
| scan0066 | Request for the weight of the rear road springs for Phantom Chassis 12-EX. | ||
| View original record | Hs/Rm. X8410 BY/HEB8/M.2.12.27. PHANTOM CHASSIS 12-EX. (FOR 10,000 MILES TEST IN FRANCE). FRONT AND REAR ROAD SPRINGS SEC:7020/30. Thank you for the weight of the Front Springs required for Chassis… | ||
| scan0067 | Technical memorandum discussing suspension dynamics and the pitching characteristics of various car models. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. +840 Hs/Rm3/LG2.12.27. SUSPENSION. X3900 (crossed out) X5410 In OY13/E111026, a figure was given for the ratio k²/ab of the… | ||
| scan0068 | Suspension, the Lancia system, and a proposed modification to the Phantom's wheelbase. | ||
| View original record | contd :- -2- is on the Lancia transferred to the sprung weight in the optimum position for increasing K2. 4 Independent rear wheel suspension has the same advantages. Reducing the wheelbase of the… | ||
| scan0069 | Advantages and disadvantages of flexible front suspension springs. | ||
| View original record | To R. from Hs/Rm. c.c. to BJ. Wor. c.c. to E. BY. c.c. to DA. OY. L8410 Hs/Rml/LG9.12.27. SUSPENSION. Originally one advantage of the introduction of the front axle control was considered to be that… | ||
| scan0070 | The effects of stiffer rear springs on car handling, riding position, and control, specifically concerning the 10-EX model. | ||
| View original record | contd :- -2- Sir John Latta, Capt. Kruse and Mr. G. Summers being three. The fundamental attribute of these springs is that they permit of a lower riding position for a given immunity from buffer… | ||
| scan0071 | The performance and suitability of two new sets of stronger rear springs. | ||
| View original record | CWB To EH from Hs/Rm. x8410 x4117 Hs/Rm2/LG12.12.27. We have two sets of stronger rear springs with reduced initial camber in the Experimental Dept. suitable for Sir John Latta's car and the London… | ||
| scan0072 | Letter from Maurice Olley discussing vehicle riding quality, specifically pitching speed and the effect of mass distribution on the 20 HP and Phantom models. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. [Handwritten Number]: x8410 [Handwritten Initials]: Hs [Handwritten Initial]: W [Stamp]: RECEIVED DEC 23 1927 Hs [Stamp]: POST 28 XII 1927… | ||
| scan0073 | The fundamentals of car performance, focusing on suspension 'pitching' and weight distribution. | ||
| View original record | 48410 HS/Rml/LG20.12.27. FUNDAMENTALS OF CAR PERFORMANCE. 40/50 HP. SUSPENSION. We are aware that one of the most difficult problems encountered by outside inspectors at the moment is that of… | ||
| scan0074 | Comparison of vehicle weight distribution and suspension design to reduce pitching, mentioning Lancia, 20 HP, and 40/50 models. | ||
| View original record | Cont'd. HS/Rm/LG20.12.27 the wheel base and the maximum amount of weight each end. The car which conforms most nearly to these ideal conditions is the Lancia. The equivalent of the front axle is… | ||
| scan0075 | Improving ride comfort by adjusting weight distribution on the chassis. | ||
| View original record | -3- HS/RM/LG20.12.27. Actually, the fact that the 40/50 has a longer wheel base than the 20 HP. is a disadvantage for similar types of bodies. Briefly, as the wheel base of the modern car is more or… | ||
| scan0076 | Notes on suspension efficiency, vehicle balance, and managing pitching discomfort by adjusting rear spring damping. | ||
| View original record | -4- HS/Rm/LG20.12.27. wheels at the rear. Therefore, when making a test to show up the efficiency of the suspension always ensure that the petrol tank is full. While these notes may seem of rather a… | ||
| scan0077 | Requirements for springs and instruments for the proposed Alpine Phantom cars. | ||
| View original record | To BY. from Hs/Rm. X8410 Hs/Rm4/LG21.12.27. PHANTOM CHASSIS. X8410 ROAD SPRINGS, ETC. X4308 With reference to the proposed 6 Alpine Phantom cars (EAC.14.) We suggest that the following parts can be… | ||
| scan0078 | Specifications for speedometer and rev-counter calibration, performance, and required cable length. | ||
| View original record | contd :- -2- the above specification holds good. The speedometers required, as also the rev. counters, should be set to read correctly at 25°C, and for 16-tooth axles should read 88.5 m.p.h. at 1000… | ||
| scan0079 | Suspension problems, specifically 'pitching' in the 40/50 HP model, and the ideal weight distribution for minimizing it. | ||
| View original record | To Hm. from Hs/Rm. SUSPENSION 40/50. We are aware that one of the most difficult problems encountered by outside inspectors at the moment is that of suspension. We are continually working on this… | ||
| scan0080 | Circulation of information for the 40/50 HP suspension. | ||
| View original record | To Hm. from Hs/Rm. X8410 Hs/Rml/LG21.12. 27. TECHNICAL INFORMATION. 40/50 HP. SUSPENSION. X.4572 Will you please circulate the attached information to the people who have the original Technical… | ||
| scan0081 | Comparison of chassis design between the 20 HP and 40/50 models, focusing on factors affecting pitching. | ||
| View original record | -2- contd :- spare wheels are carried far out behind the rear axle. Therefore, quite apart from the unconventional front suspension, we should expect this car to ride well because we can see why it… | ||
| scan0082 | List of recommendations for improving car riding characteristics by adjusting weight distribution. | ||
| View original record | contd :- -3- (1) Carry spare wheel and luggage at back. (2) Avoid top heavy and short bodies which tend to concentrate the weight in the centre of the chassis. (3) Carry the petrol tank as far out at… | ||
| scan0083 | 40/50 suspension system, specifically rear spring alterations and buffer clearance. | ||
| View original record | To Hm. from Hs/Rm. X8440 Hs/RmL/LG23.12.27. 40/50 SUSPENSION. X8410 [crossed out] X4117 With reference to Hm/NRC9/MW19.12.27. We think the information given herein is exceptionally useful in that it… | ||
| scan0084 | Improvements for Phantom chassis to address issues with riding qualities, sea-sickness, and steering. | ||
| View original record | Hs. BY. from R. DA/EV. c. to BJ. Wor. LHS. c. to OY. CWB. C. " SG. PN. E. /8240 R2/M23.12.27. PRESENT PHANTOMS - RIDING X. 8770 QUALITIES, SEA-SICKNESS, & X. 8410 STEERING. X. 8430 +8830 It is… | ||
| scan0085 | Excellent suspension and handling of a Phantom sports car, noting its low centre of gravity. | ||
| View original record | 48410 X3900 X8774 OY. from Hs/Rm. Hs/Rm4/LG31.12.27. SUSPENSION. We have swung a Phantom sports car. We find that K²/AB for this car is .43. This sports car is agreed by everyone to be the best sprung… | ||
| scan0086 | Sketch and calculation of a vehicle's weight distribution and center of gravity. | ||
| View original record | PT OF SUPPORT 11.33' .550" C of G 27.6" ¢ OF WHEEL 6.83' 5.10' Axle weights - front 400 lbs. rear 576 lbs. Weight of car - front 19 cwts. 1 qr. = 2158 lbs. rear 24 cwts. 0 qr. = 2687 lbs. TOTAL : =… | ||
| scan0087 | Requesting an alteration to the poundage and negative camber of P.I. road springs. | ||
| View original record | 88410. To O.O. From Hs/Rm. Hs/Rm.5/KT.23.3.31. xet~9. P.I. ROAD SPRINGS. 110-DC. We want the poundage of the springs that we ordered in Hs/Rm.1/MJ.28.1.31. altering to 2250 lbs. at .5" negative camber… | ||
| scan0088 | Instructions for the temporary replacement of rear road springs on a Phantom 1 car, chassis 110-DC. | ||
| View original record | To Hd. From Hs/Lid. A8410 Hs/Lid.2/MJ.24.3.31. PHANTOM 1 REAR ROAD SPRINGS 110-DC. In confirmation of our telephone conversation we are sending 110-DC. to you for the rear road springs to be changed.… | ||
| scan0089 | Revised specifications for P.I. road springs, altering poundage and camber. | ||
| View original record | To O.O. From Hs/Rm. c.c. to Stores. J 8410. Hs/Rm.3/KT.25.3.31. P.I. ROAD SPRINGS 110-DC. We want the poundage of the rear springs that we ordered for this car in Hs/Rm.1/MJ.28.1.31. and have… | ||
| scan0090 | Road test of chassis 110-DC, focusing on its springing and handling characteristics. | ||
| View original record | X8410. X. 8410. X. 7960. Hs/Mr. Lidsey. Hd/WT7/KW30.4.31. Re Chassis No. 110-DC. We have tried the above car and find the springing very good for town work, and also ggod at moderate speeds. At speed… | ||
| scan0091 | Spring modifications for a Phantom I chassis (110-DC) to improve ride comfort. | ||
| View original record | X8410. To R. From Hs/Lid. c. to Sg. Wor. c. to E. Da. c. to Ey. Hd. Hs/Lid.2/KT. 30.4.31. PHANTOM I. SPRINGING. X.8410. X.7960. On chassis No. 110-DC, we have fitted road springs having greater… | ||
| scan0092 | Inquiring about the anticipated weight of road springs for EAC.14 cars and potential for weight reduction. | ||
| View original record | X82110 To BY. from Hs/Rm. Hs/Rm1/LG3.1.28. Will you please let us know what you anticipate the weight of the road springs for EAC.14 cars should be, and whether there is any possibility of further… | ||
| scan0093 | Specifications and ordering instructions for front and rear road springs. | ||
| View original record | C. Hs/Am. 78410 BY/HEBS/M.3.1.28. EAC. 14. FRONT & REAR ROAD SPRINGS SECS:7020/30. Further to our memo' BY/HEB2/M.24.10.27. by which we ordered special cambered springs for the above chassis, the… | ||
| scan0094 | The testing, suitability, and production of stiffer rear road springs. | ||
| View original record | To BY. from Hs/Rm. To Hm. from Hs/Rm. c. to RHC XP4W Hs/Rm5/LG3.1.28. ROAD SPRINGS. X8410 X8570 At the present time we have in the Expl: Dept: 2 sets of stiffer stronger rear springs which were… | ||
| scan0095 | Specifications and order instructions for front and rear road springs, cancelling a previous memo. | ||
| View original record | To Roy C. Hs/Rm. X840 BY/HEB4/M.4.1.28. E.A.C. 14. RECEIVED FRONT AND REAR ROAD SPRINGS SEC:7020/30. Further to our memo' BY/HEB3/M.3.1.28. by which we instructed that 2 pairs of 1550 lbs. Rear Road… | ||
| scan0096 | The ordering and weight specifications of front and rear road springs. | ||
| View original record | Roy C. Hs/Rm. X8410 BY/HEB12/M.4.1.28. E.A.C. 14. FRONT AND REAR ROAD SPRINGS SEC: 7020/30. Further to our memos BY/HEB3/M.3.1.28. and BY/HEB2/M.24.10.27, by which we have ordered the following… | ||
| scan0097 | Pros and cons of using chromium plating on various components and suggesting suitable parts for testing. | ||
| View original record | To Wor. from Hs. c. to BY. c. to H1. X8410 Hs2/LG5.1.28. CHROMIUM PLATING. X1360 We do not wish to have valve springs Chromium plated because we can see no advantage whatever in treating them this… | ||
| scan0098 | Springing experiments and pitching issues on chassis 115-MC. | ||
| View original record | Ps to HS/RM (Works) 48410 Ps10/IL.10.I.28 re: Springing - (Chassis 115-MC.) Your thesis on springing is very helpful. I do not know if I sent you a copy of my memo on the difficulty I am having with… | ||
| scan0099 | Scheme to reduce chassis height by reducing the camber of the springs. | ||
| View original record | S/W (Copy to Hs)! X82410 Sg10/M/10.1.28. In a conversation I had with Hs. yesterday evening, he mentioned that a scheme had been passed for reducing the height of our chassis by reducing the cambre of… | ||
| scan0100 | Technical note on vehicle springing, damping, and buffer clearance to address pitching issues. | ||
| View original record | To Ps. from Hs/Rm. [Handwritten] X8410 Hs/Rm2/LG13.1.28. SPRINGING. [Handwritten] X8410 [Handwritten, crossed out] X235 We are very interested in your note re. pitching difficulties with French cars.… | ||
| scan0101 | Instructions for experimental load testing on front and rear hydraulic shock absorbers, detailing specific load limits. | ||
| View original record | contd :- -2- By insertion of packing pieces under the springs of the hydraulic shock absorbers it is possible to obtain any loading to 140 lbs. on the front shock absorbers for an experimental test.… | ||
| scan0102 | Suspension design, weight distribution, and damping for 20 HP and 40/50 HP models. | ||
| View original record | Hs. BY. DA. E. from R. c. to BJ. RG. C. SG. R1/M14.1.28. 20 HP. and 40/50 HP. SUSPENSION. X. 8410 Referring to Hs/Rm 20.12.27. the points mentioned are now well agreed upon but we must be careful what… | ||
| scan0103 | Increasing front buffer clearance and improving damping systems for rough road performance. | ||
| View original record | contd : -2- (Our experinece on the rough roads here suggest that front buffer clearance must be increased by half at least). Having done all we can then we must have ample damping, as proved by the 20… | ||
| scan0104 | Urgent request to order an initial set of 1100 lbs front road springs for a Sports car type for 10,000-mile tests in France. | ||
| View original record | To BY/HEB. from Hs/Rm. X8410 Hs/Rm2/LG19.1.28. Will you please order initial set of front road springs of the Sports car type, 1100 lbs. strength. These are urgently required ax so that they can be… | ||
| scan0105 | Ordering of standby Front Road Springs for the 10,000 Miles Tests. | ||
| View original record | C. Hs/Hm. X 8410 BY/HEB1/M.30.1.28. E.A.C. 14. FRONT ROAD SPRINGS SEC:7020. Further to our memo' BY/HEB4/M.4.1.28, by which we ordered special cambered 1050 and 1100 lbs. Front Springs, and 1550 lbs.… | ||
| scan0106 | The ordering, storage, and fitting of experimental stronger rear road springs. | ||
| View original record | RHC c. Hs. c. G/Mt. c. D/BP. -------- X8410 BY/Cgh5/G.27.1.28. With reference to the three sets of Stiffer stronger rear road springs, which we ordered for experimental purposes, will you please… | ||
| scan0107 | Sending stiffer springs to Cricklewood for trials on Sir John Latta's car. | ||
| View original record | To BY. from Hs/Rm. X8410 Hs/Rm2/LG27.1.28. X4117 In our Hs/Rm5/LG3.1.28. we sent you to you three sets of stiffer stronger springs. Attached is a memo. from CWB. We think it would be a good idea to… | ||
| scan0108 | Specifications, weight, and rating of sports car rear springs compared to standard springs. | ||
| View original record | X8410 To EY. from Hs/Rm. c. to Da. c. to WcP. Hs/Rm1/LG28.1.28. SPORTS CAR REAR SPRINGS. X8410 X8774 We recommend that the following springs are ordered for the sports car :- Front 1000 lbs. to… | ||
| scan0109 | Weight reduction for sports car rear springs and communication with spring makers. | ||
| View original record | contd :- -2- has been pared down to the last ounce. Cannot we make a determined effort to save 40 lbs. on the rear springs; we are proposing to order all the sports car rear springs of the same… | ||
| scan0110 | Issue of a blueprint for the F.78403 Front Road Spring for the Phantom Chassis. | ||
| View original record | RHO c. Hs/Rm. X8410 BY/HEB20/M.30.1.28. PHANTOM CHASSIS. FRONT SPRINGS & FITTINGS SEC:7020. Please receive herewith one Blue Print of the following:- F.78403 Front Road Spring. 2 off. Kindly note the… | ||
| scan0111 | Letter discussing differing opinions on riding quality, sprung-mass calculations, shock absorbers, and aerodynamics between the US and UK branches. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X8410 OY8.R.2.9.28 February 9th, 1928. Mr. Robotham, Rolls Royce Ltd., Derby, England. Dear Mr. Robotham: RE RIDING QUALITY Many thanks for your note of… | ||
| scan0112 | Letter discussing vehicle riding comfort, suspension dynamics using the K²/ab formula, and cushion design. | ||
| View original record | - 2 - K²/ab It would be interesting to so "fake" a car that K²/ab was equal to unity and see what sort of riding resulted, and whether the independence of front and rear oscillations was noticeable,… | ||
| scan0113 | Hydraulic shock absorbers on the 14-EX model, proposing heavier front springs. | ||
| View original record | To R. from Hs/Rn c. to BJ. x840 Hs/Rn3/LG15.2.28. HYDRAULIC SHOCK ABSORBERS. x235. The front axle control dampers on 14-EX are not fitted with the velocity pressure increase. The rear shock absorbers… | ||
| scan0114 | Changes to the rear springs and fittings for the Phantom chassis. | ||
| View original record | c. As/Rm. XS410 BY/HEB5/M.17.2.28. PHANTOM CHASSIS. REAR SPRINGS & FITTINGS SEC:7030. Herewith one blue print of:- F.78536 Rear Road Spring. 2 off per chassis. Kindly note this drawing shows the new… | ||
| scan0115 | Amending a suggested order for special light type rear springs for the Continental Phantom. | ||
| View original record | To BY. from Hs/Rm. +S410 Hs/Rm1/LG22.2.28. With reference to the special light type rear springs for the Continental Phantom. On further consideration we think that the best plan would be to order one… | ||
| scan0116 | Spring ratings, calculation methods, and a request for data suitable for Australia. | ||
| View original record | To Pt. from Hs/Rm. Hs/Rm2/LG10.3.28. Thank you for Pt10/FM31.12.28. We agree that 'initial' is confusing, perhaps 'free camber' is the best. You mention you don't understand the spring rating shewn in… | ||
| scan0117 | Bumper tests conducted on American type front road springs. | ||
| View original record | +S&HD Hs/AJL/LG29.3.28. X 8772 X 3900 BUMPER TEST ON AMERICAN TYPE FRONT ROAD SPRINGS. Conditions of test as all previous tests i.e. 105 drum revs/min., tyre pressures 60 lbs/sq.in., weight of front… | ||
| scan0118 | Sending a schedule showing the application of centralised lubrication to the front spring shackle. | ||
| View original record | +8410. BY. from DA. c. to BJ. Hs. DA3/M18.4.28. X.3806 X.7410 X.8410 INDIA 3. CENTRALISED CHASSIS LUBRICATION. FRONT SPRING SHACKLE. Herewith we send N.sch.2587 shewing the application of the… | ||
| scan0119 | Notification of a blueprint for a lightened type of Rear Road Spring for the E.A.C.14 chassis. | ||
| View original record | c. Hs/Rm. 78410 RECEIVED APR 20 1928 BY/HEB4/M.20.4.28. E.A.C.14. REAR SPRINGS & FITTINGS SEC:7030. Herewith please receive one Blue Print of:- F.78615 Rear Road Spring. 2 off per chassis for your… | ||
| scan0120 | Correspondence regarding the springing issues and modifications for Sir John Latta's Phantom car, chassis 92-LC. | ||
| View original record | S/W. Copy to:- Hm. EP. Hs. Hs. 48410 CWB1/GM/23.4.28. Re: Chassis No. 92-LC. Sir John Latta. As you are aware, we have had considerable difficulty in satisfying Sir John Latta regarding the springing… | ||
| scan0121 | Seeking authority from Sir John for fitting rear hydraulic dampers and experimental springs. | ||
| View original record | (2) CWB1/GM/23.4.28. I have written to Sir John in order to obtain his authority for fitting rear hydraulic dampers and asking him whether he still wishes to try our experimental set of springs, or… | ||
| scan0122 | Springing history and ride comfort issues of chassis 82-LC and 44-EH. | ||
| View original record | W/S CWB c to HS. c to EP. Hm/NRC14/MW24.4.28. re CHASSIS 82.LC and 44-EH (Please note not 92.LC) SIR JOHN LATTA. In reply to your CWB1/GM23.4.28, the following shows the history of the springing of… | ||
| scan0123 | Modifications to a car's suspension, including identical springing and the addition of hydraulics. | ||
| View original record | This should make the springing of the two cars identical in relation to their weight. The grooved spring roller and plate could easily be fitted it is thought this might tend to please Owner. In view… | ||
| scan0124 | Photomicrographs showing the structures and decarburisation of road spring plates. | ||
| View original record | Y8410 By. c to Hs. H13/EA12.5.28. Laboratory. Road Spring Plates - Further to our memo. M612. We send you herewith photomicrographs nos.A590, A591,A592,illustrating the structures of springs… | ||
| scan0125 | Two photomicrographs, No. A589 at 100x magnification and No. A590 at 1000x magnification. | ||
| View original record | Card 1: RR 403 (2¼H) (DE 879 29-3-27) G3608 ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A589 MAGNIFICATION: 100 DIAMETERS. Card 2: RR 403 (2¼H) (DE 879 29-3-27) G3608 ROLLS-ROYCE LTD. LABORATORY.… | ||
| scan0126 | Two laboratory photomicrographs, numbers A591 and A592, at 1,000 diameters magnification. | ||
| View original record | RR 403 (2½H) (DE 879 29-3-27) G3608 ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A591 MAGNIFICATION: 1,000 DIAMETERS. RR 403 (2½H) (DE 879 29-3-27) G3608 ROLLS-ROYCE LTD. LABORATORY.… | ||
| scan0127 | Recommendations to improve the 40/50 model's suspension for high-speed performance. | ||
| View original record | To Hm. from Hs/Rm. Hs/Rm2/LG19.5.28. (Handwritten: X8410) 40/50 SUSPENSION. (For Depot sheet) (Handwritten, circled: X8410, X7410) Complaints come to our notice that the 40/50 suspension is not… | ||
| scan0128 | Recommendations for supplementing suspension damping with Hartfords and adjusting steering pivot lean. | ||
| View original record | contd :- -2- It is possible that even when these springs are fitted, the owner may still desire more damping. Should this occur, there is a scheme for supplementing the standard hydraulics with single… | ||
| scan0129 | Suspension spring deflection and buffer clearance modifications for EAC.7 and EAC.10 models. | ||
| View original record | BY. from Hs/Rm c. to BY/HEB. ~~78410~~ Hs/Rm1/LG21.5.28. SUSPENSION - STANDARD, EAC.7., & EAC.10. 7410 Thank you for the spring and frame details EAC.7. and 10. The deflection under normal load of… | ||
| scan0130 | Urgent internal memo requesting advice and recommendations on a matter received from Bombay. | ||
| View original record | URGENT. S/W. X8410 2994 X4565 X8430 Whr/GST2/AP. 21. 5. 28. We attach hereto an extract of memo we have received from Bombay, reference Fn13/G/6.2.28. As this matter has been standing in abeyance for… | ||
| scan0131 | Extract from a report detailing complaints about steering, balloon tyres, and front suspension issues on various car models. | ||
| View original record | Extract from Fn13/G6.2.28. "...Now I want to discuss with you what we have learnt. I have had complaint after complaint till I am sick of hearing it of the badness of the steering on the big cars. I… | ||
| scan0132 | Various vehicle issues including springs, air valves, tappets, wheels, and steering. | ||
| View original record | -2- We had this complaint pointed out to us also by Canty and I suggest that if the Works agree and if it is not too detrimental to the good springing of the car that we should have front springs at… | ||
| scan0133 | Requesting the preparation and cadmium plating of standard front road springs for a bump test. | ||
| View original record | To RHC. from Hs/Rn. +8410 Hs/Rm3/LG22.5.28. x1360. We want to try a pair of cadmium plated standard front road springs on the bump test. Will you therefore please prepare the springs, as necessary,… | ||
| scan0134 | Customer's complaint regarding rear springs and the intended effect of fitting stiffer ones. | ||
| View original record | To. Hm From Hs/Rm. C. to Wor. PN. C. to Sg. H. C. to CWB. BY C. to EP. MX. +8410 Hs/Rm1/LG31.5.28. C.E.A. Hartridge Esq. X4117 With reference to Hm/NRC2/ME30.5.28. From our own experience we are quite… | ||
| scan0135 | Fitting of continental type springs and Hartfords to a car. | ||
| View original record | To CWB. from Hs/Rm. Handwritten: X8410 Hs/Rml/LG16.6.28. 29-CL CAR. Handwritten: X8410 (crossed out) X8950 Y442.6 With reference to GWB14/GM15.6.28. We will arrange to have continental type kx springs… | ||
| scan0136 | The testing and performance of cadmium plated road springs. | ||
| View original record | 48410 To R. from Hs/Rm. c c to BJ. WOr. c. to DA. BY. c. to E. Hs/Rm3/LG26. 6. 28. CADMIUM PLATED ROAD SPRINGS. X.1360 X.7410 X.8410 We have run a pair of front springs cadmium plated 2000 miles in… | ||
| scan0137 | Request to arrange for cadmium plating of front and rear road springs with specific camber details. | ||
| View original record | RHC. from Hs/Rm. X8410 (X1360) Hs/Rnl/LG29.6.28. Will you please arrange for 3 pairs of 1150 lbs. front road springs to be cadmium plated, and one pair of 2000 lbs. rear springs to be treated in the… | ||
| scan0138 | The performance and failures of a centralised lubrication scheme and a cadmium plated road spring. | ||
| View original record | 48410 To R: from Hs/Rm. c. to BJ. Wor. c. to E. DA. c. to BY. Hs/Rm2/LG17.7.28 CENTRALISED LUBRICATION. Y3806 X1360 The centre point lubricating scheme has now run 70 hrs. on the pump. The only… | ||
| scan0139 | Actions to improve vehicle ride comfort by modifying springing and tyres. | ||
| View original record | BJ. Copy to:- R. Sg. PH. Cx. RP. Hs. By. Hs. 48410 CWB3/GH/20.7.28. SPRINGING. Following the use by R. yesterday morning of our Weymann London Trials car 20 h.p., a discussion was held on the general… | ||
| scan0140 | Query about the standardization date for the hydraulic shock damper and spring strengths. | ||
| View original record | (2) CWB3/GH/20.7.28. Also at what date is it possible to standardise and to supply the R.R. hydraulic shock damper with viscosity effect and the general bearing of this on the spring strengths, which… | ||
| scan0141 | Serious complaints about vehicle springing and the urgent need for improvement. | ||
| View original record | To Wor. From BJ. Springing. BJG/E25.7.28 Copy to Hs. Copy to C. Copy to Sg. +8-4-40 HS The following is extract from the Minutes of the Sales Conference of the 17th July:- "SPRINGING. No further… | ||
| scan0142 | Recommendation on fitting 25% stiffer springs for heavily sprung cars, discussing buffer clearances and alternatives. | ||
| View original record | BY: from Hs/Rm. Hs/Rm3/LG26.7.28. 25% STIFFER SPRINGS. Handwritten notes: X8410, X7410 We recommend that in every case where a car has, for any reason, to be very heavily sprung and normally a 25%… | ||
| scan0143 | Springing specifications for the Phantom car, focusing on buffer clearance and spring stiffness. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. CWB. c. to EP. 48410 X5410 X615 SPRINGING - (Written before receipt of R2/M20.7.28) If the Phantom car is sprung to the present specification which… | ||
| scan0144 | Page discussing numerous complaints and breakages of springs on Phantom, 40/50 HP, and early 20 HP cars. | ||
| View original record | contd :- -2- many hundreds of complaints of springing on Phantom and 40/50 HP. cars. In the case of the early 20 HP. cars we are having to replace an enormous number of springs owing to breakages. One… | ||
| scan0145 | Analysis of springing issues on 20 HP cars, comparing performance under Continental and British road conditions. | ||
| View original record | Hs/Rn1/LG23.7.28. SPRINGING. With reference to CWB3/GM20.7.28. The situation from our point of view is as follows :- 20 HP. CAR. Complaints of 20 HP. springing from customers are a rarity. We… | ||
| scan0146 | Technical discussion on suspension spring issues and potential improvements for the Phantom & 40/50 HP models. | ||
| View original record | contd :- -2- PHANTOM & 40/50 HP. We are always in difficulty with these cars. Our problem is flexibility V. controlability. Whatever we do to the cars within practical working limits we are haunted by… | ||
| scan0147 | Recommendation to purchase a Cottin Desgouttes car with separately sprung wheels for evaluation by the Experimental Department. | ||
| View original record | To R. from Hs. c. to BJ. c. to Wor. 48410 Hs3/LG27. 7. 28. OTHER MAKES OF CARS. 10332 At the present time we have no car of another make in the Experimental Dept. We recommend that we purchase a… | ||
| scan0148 | Letter to Lord Herbert Scott regarding the springing system of Cottin-Desgouttes cars. | ||
| View original record | COPY 4, Tavistock Street, Covent Garden, W.C.2. 25th. July 1928. Lord Herbert Scott, C/O Rolls-Royce Ltd., Conduit Street, W. Dear Lord Herbert, I have just returned from a trip to and three weeks in… | ||
| scan0149 | Recommending the purchase of a Cottin Desgouttes car to study its springing system for potential improvements. | ||
| View original record | To LHS. from Hs. +8410 Hs2/LG27.7.28. X4332 We were very pleased to receive from you a copy of the letter from Mr. Geo.Monro. It has just come at a time when we were on the point of recommending that… | ||
| scan0150 | Springing tests and complaints for the Phantom model, addressing issues like jolting at low speeds. | ||
| View original record | To BJ. from Hs. c. to Wor. c. to C. c. to Sg. c. to CWB. X8410 Hs5/LG27.7.28. SPRINGING. X8410 X7410 X5410 Replying to BJ6/E25.7.28. The question of tests on springing is receiving our urgent… | ||
| scan0151 | Springing complaints, comparing the 20 HP and 40/50 HP models and issues with 'Phantom' springing. | ||
| View original record | S/W Hs. X8410 C19/C31.7.28 SPRINGING. -------- With reference to your Hs5/LG27.7.28 - last paragraph. We agree that the proportion of 20 h.p. springing complaints as compared with 40/50 h.p. is 1 in… | ||
| scan0152 | Large discrepancy in poundage between the offside and nearside rear springs on the 40/50 HP chassis. | ||
| View original record | S/W. By. Copy to:- Hs. EP. X8410 CWB3/GM/31.7.28. REAR SPRINGS 40/50 H.P. In the recent particulars of chassis delivered from W. I notice that there is a very great discrepancy between the poundage of… | ||
| scan0153 | The weight allowance on the 40/50 HP main springs to counterbalance the battery and spare wheel. | ||
| View original record | CWB. c. Hs. c. EP. XS410 BY14/G.7.8.28. 40/50 HP. MAIN SPRINGS. -------------------- Referring to CWB3/GM/31.7.28. the facts of the case are that we are making an allowance of 50 lbs. heavier on the… | ||
| scan0154 | Incorrect buffer clearances and rear springs on a 29-CL car, suggesting a reversion to original parts. | ||
| View original record | W/S. JLE. from Hs/Rm. X8410 Hs/Rm2/LG13. 8.28. RE. 29-CL CAR. X8950 With reference to your JLEW/4.8.28. We cannot understand the buffer clearances that you give for this car. They are at least .5"… | ||
| scan0155 | Request to return suspected faulty Continental type thick leaf springs from a 29-CL car for investigation. | ||
| View original record | W/S. 48410 JLE. from Hs/Rm. Hs/Rm1/LG14. 8. 28. SPRINGS FOR 29-CL CAR. 48950 It is quite clear to us that there is something wrong with the Continental type thick leaf springs which you have taken off… | ||
| scan0156 | Test drive impression of a 'Phantom' with modified springs and shock absorbers. | ||
| View original record | Y8440 PN.1/WT17.8.28. S/W (Hs) [strikethrough]Copy to BG[/strikethrough] SPRINGING. My impression from driving the "Phantom" Trials Sedanca to Derby and back recently, having the modified springs in… | ||
| scan0157 | Springing, discussing low speed riding trouble and shock absorber loading tests. | ||
| View original record | X8410 To PN. from Hs/Rm. Hs/Rm4/LG20.8.28. SPRINGING. X8410 X235 (crossed out) With reference to PN1/WT17.8.28½ Your impressions confirm our results. We find that on the whole the low speed riding… | ||
| scan0158 | Gathering further impressions on the springing of a Sedanca, with and without special hydraulic damper springs. | ||
| View original record | S/W. (Hs) X8410 PN.3/WT21.8.28. SPRINGING. In reply to your Hs/Rm4/LG.20.8.28., as you suggest I will get further impressions sitting in the back of the Sedanca in London streets and parks, both with… | ||
| scan0159 | New design for 40/50 rear road springs and its effect on stock levels. | ||
| View original record | To DA. from Hs/Rm. c. to BY. X8410 Hs/Rm1/LG21. 8.28. 40/50 REAR ROAD SPRINGS. X8410 X7410 We are rather concerned about the new type main plate for the 40/50 rear road springs which is the only… | ||
| scan0160 | Revised pad for the 40/50 rear road springs to enable the use of current stock. | ||
| View original record | X. 8410 Hs. from DA. DA1/M24.8.28. 40/50 REAR ROAD SPRINGS. With reference to Hs/Rnl/LG21.8.28., we agree as to the desirability of keeping the stock of road springs as small as possible, so that we… | ||
| scan0161 | Polishing and cadmium plating of existing springs on the Trials Sedanca car 81.RF. | ||
| View original record | W/s.Pn. [struck through] c to EP. [struck through] c to Hs. [struck through] X8410 Hm/NRC5/MW27.8.28. re TRIALS SEDANCA - 81.RF. In reply to your PN6/WT24.8.28. we would say that when this car was… | ||
| scan0162 | Phantom springing complaints, focusing on leaf friction and ride comfort. | ||
| View original record | HS. c to Ey. c to Wor. Seents X8410 Hm/NRC9/MW27.8.28. re PHANTOM SPRINGING COMPLAINTS. We have realized for a long time past that one of the most important factors affecting comfort in riding is leaf… | ||
| scan0163 | Issues with Phantom model springing complaints and methods to reduce leaf spring friction. | ||
| View original record | -2- PHANTOM SPRINGING COMPLAINTS. We find that spring leaf friction can have at least as detrimental an effect on the comfort as that of the rear springs being several hundred lbs stronger than is… | ||
| scan0164 | Curves and qualifications for various car spring setups. | ||
| View original record | To Hwa. from Hs/Rn. _X8410_ Hs/Rn4/LG27.8.28. CAR SPRINGING _X8410 X5410 X7410_ Herewith curves of car springs as requested. They are only approximations to enable reasonable springs to be put on a… | ||
| scan0165 | Continued document discussing the use of light versus heavy front springs for British and Continental conditions. | ||
| View original record | contd :- -2- Light, gives about 3" clearance. Best riding for British conditions - slightly too flexible for Continental work but not impossibly so. FRONT SPRINGS. Again it pays to use heavy front… | ||
| scan0166 | Graphs comparing spring poundage against axle weight for 20 HP front and rear springs. | ||
| View original record | 20 HP REAR SPRINGS REAR SPRING POUNDAGE HEAVY LIGHT CAR SPRUNG FOR FOUR PASSENGERS ADD HALF LUGGAGE TO EACH SPRING REAR AXLE WT. CWT CAR EMPTY 20 HP FRONT SPRINGS FRONT SPRING POUNDAGE CONTINENTAL… | ||
| scan0167 | Spring chart for Phantom 'V' series to F2B models, correlating spring poundage to empty axle weight for front and rear axles. | ||
| View original record | PHANTOM SPRING CHART 'V' SERIES TO F2B Left Chart: Y-Axis: SPRING POUNDAGE X-Axis: REAR AXLE WT CAR EMPTY. Lines: CONTINENTAL, AVERAGE, LIGHT Text Box: SPRINGING CHART ALLOWING FOR FOUR PASSENGERS TO… | ||
| scan0168 | Procedural control over modifications related to Phantom springing complaints. | ||
| View original record | Hm/NRC9/MW27.8.28. X8410 To Hm/NRC from Wor. Wor2/T.29.8.28. c to By. c to Hs. --------------------- PHANTOM SPRINGING COMPLAINTS. I have read your note with interest and all that you say is certainly… | ||
| scan0169 | Standardisation of road spring plate clips to improve design and reduce cost. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. +82410 STANDARDISATION of CHASSIS PARTS. Date 7.9.27 Description of Parts. ROAD SPRING PLATE CLIPS. Origin. To improve design and reduce cost.… | ||
| scan0170 | Implementation plan and costs for new or modified chassis parts. | ||
| View original record | STANDARDISATION OF CHASSIS PARTS (1) The number of the first chassis on which the new part will be fitted. --- When existing stocks have been used up. (2) Date when the chassis will be handed to test.… | ||
| scan0171 | Discrepancy in 40/50 suspension test results related to shock dampers and tyre pressures. | ||
| View original record | Hs. from DA. /8410 DA1/M10.9.28. 40/50 SUSPENSION. X. 8410 X. 235 X. 8520 With reference to Hs/RnL/LG6.9.28., there seems something of a discrepancy between the result of test No.1. and test No.5. On… | ||
| scan0172 | Proposing a sliding pad for existing Phantom rear springs to avoid increasing the stock of springs. | ||
| View original record | BY. from DA. c. to BJ. Hs. +8410 DA5/M13.9.28. PHANTOM REAR SPRINGS. X. 7410 X. 8410 As requested by the Expl: Dept: we have gone again into the question of providing a sliding pad for use with… | ||
| scan0173 | Which vehicle units receive sufficient lubrication from drip plugs. | ||
| View original record | To Hs. from Hs/GWH. [strikethrough]C to RHC[/strikethrough] X8410 Hs/GWH1/LG13.9.28. [strikethrough]Y3806[/strikethrough] CENTRALISED LUBRICATION. We found that sufficient lubrication was got by using… | ||
| scan0174 | Amended print for the 40/50 suspension, advising the previous copy should be scrapped. | ||
| View original record | X8410 To CY. from Hs/Rm. c. Hm, PN. c. BY. Hs/RmE/T17.9.28. RE 40/50 SUSPENSION. Herewith we send you an amended print of the 40/50 suspension. The copy already in your possession is incomplete and… | ||
| scan0175 | Explaining discrepancies in suspension tests for the 40/50 model. | ||
| View original record | To DA. from Hs/Rm. X8410 Hs/Rml/T17.9.28. 40/50 SUSPENSION. X7410 We regret that we have not previously answered your DA1/M10.9.28 but we have been away from the Works. The apparent discrepancy… | ||
| scan0176 | Spring modifications for cars destined for Australia due to breakages and poor road conditions. | ||
| View original record | Hs/Rm C. BY/HEB 78410 BY4/G.17.9.28. SPRINGING FOR AUSTRALIA. ----------------------- Referring to Hs/Rm3/LG.26.7.28. which has only just come to my notice, the position in regard to Australia was as… | ||
| scan0177 | Low-pressure tyres and road spring characteristics for Phantom and 20 HP models. | ||
| View original record | HS. EF. from R. c. to BJ. BY. PN. CWB. 48410 R2/M20.7.23. PHANTOM AND 20 HP. X.7410 X.7820 RIDING QUALITIES. X.8410 X.5820 X.5410 X.235 TYRES. Naturally we must have low pressure tyres for both these… | ||
| scan0178 | Suspension settings, spring flexibility, and shock damper improvements. | ||
| View original record | contd :- -2- depart from flexible springing for the sake of high speed riding, but since we have got hydraulic dampers we must increase the effectiveness of these dampers, especially on the recoil… | ||
| scan0179 | Use of 'Sports type' springs for cars destined for Australia. | ||
| View original record | To BY. from Hs/Rm. c. to BY/HEB. X,8410 Hs/Rm6/LG1.8.9.28. SPRINGING FOR AUSTRALIA. We agree that Pt. ought to try the Sports type spring before Australian cars are so sprung. Will you please let him… | ||
| scan0180 | Proposal to change the material for front road springs from Chrome Vanadium to Silico Manganese steel to improve reliability and reduce cost. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. 78410 STANDARDISATION of CHASSIS PARTS. Date 3.10.27 Description of Parts. MATERIAL FOR FRONT ROAD SPRINGS. Origin. To improve reliability and reduce… | ||
| scan0181 | Cover memo regarding springing on the 40/50 HP Chassis. | ||
| View original record | HS X 8410 To Wor. From BJ. Copy to Hs. EY. PN. H. OWB. BJ8/E17.9.28 Springing - 40/50 HP Chassis. I enclose herewith for your information copy of memo. sent to R. to-day. BJ. Enc. Copy of BJ2/E17.9.28… | ||
| scan0182 | Customer complaints regarding 40/50 HP chassis springing and ongoing experiments to resolve the issues. | ||
| View original record | To R. from BJ. Springing. 40/50 HP BJR/E17.9.28 Chassis. I have just received from the Inspection Department an analysis of all outstanding 40/50 HP complaint cases registered in their department to… | ||
| scan0183 | Issues of friction and seizure in rear springs, particularly from Firth's manufacture, and proposing solutions. | ||
| View original record | Hs. c to EY. c to Wor. c to EP. 48410 Hm/NRC7/MW22.9.28. re SPRING FRICTION. We find that many rear springs, especially of Firth's manufacture, are badly and deeply seized at the ends of the plates;… | ||
| scan0184 | Suggestion to pre-treat new springs by 'bedding' the plates to prevent complaints of hard riding. | ||
| View original record | Spring Friction. -2- Hm/NRC7/MW22.9.28. suggest whether or not it would not pay is in the long run to do a certain amount of bedding on the plates of new springs before they are put on new chassis,… | ||
| scan0185 | Issues and potential improvements for the New Phantom's springing system, including friction, greasing, and damping. | ||
| View original record | Hs. c. BY. c. Wor. c. FN. c. CWB. c. BJ. Y8410 EP12/H27.9.28. re. NEW PHANTOM SPRINGING. I have noted the correspondence with regard to the above. In view of the points raised re importance of spring… | ||
| scan0186 | Issues and cost-effectiveness of cadmium plating for springs, noting Mr. Royce's reservations. | ||
| View original record | To PN. from Hs/Rm. +8410 x1360 Hs/Rm1/LG24. 9.28. With reference to PN3/WT22. 9.28. We see nothing in our memo. which indicates that plated springs have been standardised. Cadmium plating has not been… | ||
| scan0187 | Request for overnight maintenance to clean, polish, and grease the rear springs and disconnect the shock absorbers on car 98-NK. | ||
| View original record | X8410 To MLC. from Hs/Rm. Hs/Rm2/LG27.9.28. 98-NK CAR. X8410 X235 Will you please arrange for the rear springs of this car to be cleaned, polished and greased during the night, and the hydraulic shock… | ||
| scan0188 | Further tests into road spring friction, the phenomenon of 'digging-in' on used springs, and potential remedies. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to BY. OY. 48440 Hs/Rn2/LG29.9.28. ROAD SPRINGS. Y4429 X3854 In continuance of our report Hs/Rn1/LG8.9.28, we have been carrying out further tests on… | ||
| scan0189 | Spring design comparing cadmium-plated, Firths, and Woodheads springs to address issues with internal friction and digging-in. | ||
| View original record | contd :- -2- We have a number of cadmium plated springs in service so that we shall shortly get a test as to how their internal friction changes compared with standard. Any feature in spring design… | ||
| scan0190 | Issues of spring friction and seizure in Firths manufactured rear springs and proposed remedies. | ||
| View original record | Hs. BY. Wor. EP. C O P Y. Hm/NRC7/MW22.9.28. SPRING FRICTION. We find that many rear springs, especially of Firths manufacture, are badly and deeply seized at the ends of the plates; particularly is… | ||
| scan0191 | Tests to determine the internal friction of 40/50 road springs, comparing front and rear springs under various conditions. | ||
| View original record | Hs/Rm/LG29.9.28. FRONT ROAD SPRING FRICTION. We have carried out some tests to determine the internal friction of the 40/50 road springs. The outstanding points are, comparing the front and rear… | ||
| scan0192 | Test report with three graphs showing deflection vs. applied load for a rear road spring after a 5000-mile run. | ||
| View original record | E REAR ROAD SPRING 8 EX. N.S. - 1950 LB CHASSIS TYPE FULCRUM DRY RUN 5000 MILES IN 6 MONTHS. 10. 9. 28 Graph 1 (Top): TEST No 3 Y-Axis (DEFLECTION - INS): 12.0, 10.0, 8.0 X-Axis (APPLIED LOAD - LB-):… | ||
| scan0193 | Graph showing results of three load deflection tests on a lubricated rear road spring after a 5000-mile run. | ||
| View original record | F. REAR ROAD SPRING. 8 EX. N.S. - 1950 LB- CHASSIS TYPE FULCRUM LUBRICATED RUN 5000 MILES IN 6 MONTHS. TEST Nº 3 HYSTERISIS LBS. 94 96 98 100 TEST Nº 2 DEFLECTION - INS - 116 112 108 104 TEST Nº 1 92… | ||
| scan0194 | Series of three graphs showing deflection versus applied load for a lubricated standard front road spring. | ||
| View original record | G STANDARD FRONT ROAD SPRING - F.71975-1100 LB 13-9-28 LUBRICATED DEFLECTION - INS APPLIED LOAD - LB- HYSTERESIS LBS TEST No 3 78 78 78 78 TEST No 2 104 88 72 56 TEST No 1 48 46 44 42 Y-AXIS… | ||
| scan0195 | Road spring tests for a standard front spring after 3 1/2 years of service, tested dry. | ||
| View original record | H ROAD SPRING TESTS STANDARD FRONT F.71975 - 1150 LB - OFF 78 N.K. AFTER 3 1/2 YEARS SERVICE. DRY DEFLECTION - INS. APPLIED LOAD - LB. HYSTERISIS LBS. 18-8-28 5.0 4.0 3.0 1200 1400 1600 1800 2000 100… | ||
| scan0196 | Series of three graphs showing the results of road spring tests measuring deflection versus applied load. | ||
| View original record | J. 18-8-28 ROAD SPRING TESTS 1100 LB- STANDARD FRONT - F.71975 - OFF 78 N.K. AFTER 3½ YEARS SERVICE CLEANED AND LUBRICATED HYSTERISIS LBS. TEST Nº3 70 60 50 40 DEFLECTION - INS. 5.5 4.5 3.5 1200 1400… | ||
| scan0197 | Graphs showing load vs. deflection test results for a standard, lubricated, cadmium-plated front road spring. | ||
| View original record | FRONT ROAD SPRING - STANDARD - F.71975 - 1100 LB - CADIUM PLATED - LUBRICATED. K. DEFLECTION - INS - HYSTERESIS LBS. TEST No 3 5.5 4.5 3.5 1200 1400 1600 1800 2000 20 18 16 14 APPLIED LOAD - LB. TEST… | ||
| scan0198 | Series of three graphs showing the results of front spring tests, plotting deflection against applied load. | ||
| View original record | L FRONT SPRING TESTS - 12 EX. - CADMIUM PLATED F.78164 - 1050 LB. - AFTER ROAD TEST - 4000 MILES -DRY- THIS SPRING WAS PURPOSELY NOT LUBRICATED DURING ONE TEST. HYSTERISIS LBS DEFLECTION - INS APPLIED… | ||
| scan0199 | Comparison of two leaf spring designs from Firths and Woodhead, showing bedding and tip sections. | ||
| View original record | Left drawing: PART SECTION A.A, <--1.200-->, .300, ↓ .125, TYPICAL BEDDING, FIRTHS SPRING. Right drawing: PART SECTION A.A, <--2.500-->, .300, ↓ .156, TYPICAL BEDDING, WOODHEAD. ALL LEAVES SAME TIP… | ||
| scan0200 | Comparison of Woodheads and Firths rear road springs at 1700 lbs load. | ||
| View original record | COMPARISON OF WOODHEADS AND FIRTHS ROAD SPRINGS (REAR) 1700 LBS. Left Section - WOODHEADS: THESE DIM'S SHEW AMOUNT OF 'NIP' NOTE. VERY HEAVY BEDDING OCCURS ON EACH LEAF AT A PLACE COINCIDING WITH THE… | ||
| scan0201 | Car springing, ride comfort, weight distribution, and tyre choices. | ||
| View original record | BJ. BY HS. FROM R. 18210 RL/M1.10.28. c. to Wor. DA. E. C. SG. RE. SPRINGING. X. 7410 X. 507 X. 8410 X. 4050 X. 5410 X. 7830 Certain undesirable characteristics of the cars have been overcome by… | ||
| scan0202 | Design of road springs, comparing different end shapes and spring types. | ||
| View original record | BY. HS. from DA. X8410. DA3/M2.10.28. ROAD SPRINGS. X.3854 X.7410 X.8410 R. agrees to returning to the Woodhead clip in order to get the ends of the spring plates as flexible as possible. He thinks… | ||
| scan0203 | The standardisation of cadmium plating and the bedding of road spring leaves. | ||
| View original record | To B.J. from Hs. YS410 Hs4/LG8.10.28. ROAD SPRINGS. x2410 x1360 With reference to attached correspondence in connection with the above. We are working with the object of standardising cadmium plating… | ||
| scan0204 | Improvements to the manufacturing process and quality of road springs. | ||
| View original record | BY. from R. DA. HS. c. to BJ. Wor. PN. CWB. 48410 R1/M20.10.28. ROAD SPRINGS. X.7410 X.5410 X.8410 I quite agree that we must stop hollow rolling of spring plates. This is not our work, but is done to… | ||
| scan0205 | The objectives of a series of tests carried out on the 40/50 suspension system's axle movement. | ||
| View original record | 78410 To R. from Hs/Rm. c. to BJ. WCF. c. to RG. E. c. to DAJ BY. c. to OY. Hs/Rm2/LG29.10.28. 40/50 SUSPENSION. Attached are the results of a number of tests carried out on axle movement. The object… | ||
| scan0206 | Analysis of vehicle suspension performance, focusing on spring and axle movements in relation to speed, road conditions, and riding comfort. | ||
| View original record | contd :- -2- velocity increase up to 2 ft/sec, but from this point upwards a rapid rise in pressure would be desirable. The max. velocity we have to deal with is about 5 ft/sec. Even this, it appears,… | ||
| scan0207 | Test data on axle movement and car swaying under various road conditions and speeds. | ||
| View original record | contd :- -3- AMPLITUDE AXLE MOVEMENT. Undamped. Pot holes 23 m.p.h. 1.20" 35 m.p.h. 1.50" Damped. Pot holes. 23 m.p.h. .900" 35 m.p.h. 1.000" Main road. 23 m.p.h. .700" 35 m.p.h. .700" 45 m.p.h. .844"… | ||
| scan0208 | Car velocities and axle motion experiments, including details of the testing apparatus. | ||
| View original record | contd :- -4- CAR VELOCITIES IN EXCEPTIONAL CIRCUMSTANCES WHEN THE AXLE IS WELL DAMPED. ft/sec. Hump backed bridge 35 m.p.h. 1.4 40 m.p.h. 3.7 Level crossing. 35 m.p.h. 1.15 40 m.p.h. 1.75 Ditto - axle… | ||
| scan0209 | Analysis of axle velocity, damping settings, and the natural frequency of vehicle suspension and pitching. | ||
| View original record | contd :- -5- The small numerals indicate the axle velocity in ft/sec. at the point marked. This is obtained from the slope of the line at that point, taking into account the horizontal scale of time… | ||
| scan0210 | Blueprint showing graphs from rear axle motion experiments on a Phantom 98 N.K. vehicle. | ||
| View original record | SHEET 2 REAR AXLE MOTION EXPERIMENTS PHANTOM 98 N.K. BURTON ROAD RAILWAY LEVEL CROSSING COMING IN TOWARDS DERBY 23 M.P.H x 4-12 NO DAMPERS x 5-34 HARTFORDS ONLY SET AT 40 LBS 35 M.P.H x 8-88 NO… | ||
| scan0211 | Blueprint graph showing the results of rear axle motion experiments on a Phantom 98 N.K. | ||
| View original record | REAR AXLE MOTION EXPERIMENTS SHEET I PHANTOM 98 N.K. M.P.H. SURFACE:- AVERAGE MAIN ROAD SHARDLOW STRAIGHT. NO SHOCK ABSORBERS x 5.34 AXLE HEAVILY DAMPED x 2.68 SURFACE:- BAD POT-HOLES. BOLTON LANE. NO… | ||
| scan0212 | New method for protecting and lubricating springs using lanoline and an adhesive tape puttee. | ||
| View original record | Mr. Sft. (struck through) c. Hs. c. BY/HEB. c. BY/NW. c. ROY. X8410 BY14/G.2.11.28. SPRINGS. -------- Referring to the question of spring protection and lubrication arising out of the Test… | ||
| scan0213 | Note advising of a new method for spring protection and the resulting deletion of lubricators from gaiters. | ||
| View original record | - 2 - BY14/G.2.11.28. the series we are working upon fitted with lubricators, but when ordering more there should be no need for these fittings being required. A note should be supplied to owners to… | ||
| scan0214 | Correcting a previous note about the Enots lubricator on gaiters, agreeing to replace it with a plain plug. | ||
| View original record | Mx. Sft. Hs BY/HBB BY/NW. ROY. XS210 BY5/G.5.11.28. LUBRICATORS ON GAITERS. ---------- I was under the impression when writing my note BY14/G.2.11.28. that the Enots lubricator was solid with the… | ||
| scan0215 | Cancelling previous instructions on road spring lubrication due to lanoline lubricant failing to prevent squeaking. | ||
| View original record | Mx. Sft c. Hs. c. BY/HEB. c. BY/NWL. c. ROY. XS410 BY14/G.12.11.28. ROAD SPRINGS. Referring to By14/G.2.11.28. and BY5/G.5.11.28. carrying the test period further has demonstrated that the Lanoline… | ||
| scan0216 | Investigation into the cause and remedy for a squeaking front spring through various lubrication methods. | ||
| View original record | X8410 [Stamp: By Hs. ✓] [Stamp: Hs.] [Stamp on left margin: RECEIVED 16 NOV 1928] RE SPRING LUBRICATION Mx9/T15.11.28. One of the polished and lanolined front springs that had been covered with wax… | ||
| scan0217 | Methods and difficulties related to spring lubrication. | ||
| View original record | WOR. MX. Hs. Sft. ROY. F. Dept. 18410 BY5/G.20.11.28. RECEIVED 20 NOV SPRING LUBRICATION. -------------------- Referring to Mx9/T.15.11.28. it is not a simple matter to clear up the above issue. I… | ||
| scan0218 | Test procedure for road spring lubrication using felt inserts and copper oil pipes. | ||
| View original record | W. Bell. from Hs/Rm. X8410 Hs/Rm/LG21.11.28. TESTS ON SPRING LUBRICATION. X8410 X3745 Take a road spring and gaiter and cut out pieces of felt to fit inside the gaiter. (1) At the sides of the spring.… | ||
| scan0219 | Experiments on spring lubrication and the use of spring gaiters. | ||
| View original record | To Wor. from Hs/Rn. c. to Mx. c. to BY. X8410 Hs/Rm2/LG21.11.28. RE. SPRING LUBRICATION. X8410 X.3745 With reference to Mr9/T15.11.28. and in view of the interesting results obtained on spring… | ||
| scan0220 | Communication from Melbourne regarding complaints of harsh front springs on 40/50 HP models and a suggestion for improvement. | ||
| View original record | X8410 Pt.4/EP/29-11-28 MELBOURNE. - 29th November, 1928 By/Derby C/Hs/Derby ✓ C/EP/Derby C/Wmr/London C/CEB/London Re complaints of harshness of front springs of 40/50 H.P. front wheel brake models… | ||
| scan0221 | Persistent troubles with front road spring squeaks and potential design solutions. | ||
| View original record | To R. from Hs/Rn. c.c. to EJ. WOr. c.c. to DA. BY. c.c. to OY. Y8410 Hs/Rn7/LG4:12. 28. FRONT ROAD SPRINGS. X7410 print m One of our most persistent troubles is spring squeaks. The main source of this… | ||
| scan0222 | Diagram illustrating the lubrication of a flexible cable spring. | ||
| View original record | FLEXIBLE CABLE SPRING LUBRICATION. | ||
| scan0223 | Individual wheel weights of cars to investigate excess poundage on offside springs. | ||
| View original record | S/W. By. Copy to:- Hs. EP. Hs. X8410 CWBG/GM/5.12.28. EXCESS POUNDAGE OF OFFSIDE SPRINGS. At the recent Technical Conference held at W. on 21st November, after a discussion regarding the necessity for… | ||
| scan0224 | Vehicle weight distribution and proposing a change to the spring poundage. | ||
| View original record | CWB8/GM/5.12.28. (2) 3. 86-CL. Weight in running order with complete kit, 3 galls petrol, one spare wheel mounted at rear and driver (12 1/2 stone) at wheel. cwts. qrs. lbs. o.s.f. wheel 11 2 7 n.s.f.… | ||
| scan0225 | Short memo confirming the results of previous reports on car springing. | ||
| View original record | +S410 To Mx. from Hs/Rm. cc to BY. Hm. c. to EP. Wor. Hs/Rm3/LG6.12.28. SPRINGING. x7410 Re. Mx3/T6.12.28. As will be seen from our previous reports, we entirely confirmed the results obtained on this… | ||
| scan0226 | Instructing that all future cars should be fitted with similar springs on each side of the chassis. | ||
| View original record | W/S. (CWB) 7824W c. EB. c. Hs. c. Mx. BY12/G.7.12.28. RECEIVED ROAD SPRINGS. ----------- In view of your memo CWB8/GM.5.12.28. and the decision arrived at at the Conference on Novr. 21st. that if no… | ||
| scan0227 | Ineffectiveness of lubricating springs to improve poor riding quality at certain speeds. | ||
| View original record | W/s (c). c. HS. Y82/10 BY/3/G.27.12.28. LUBRICATION OF SPRINGS. -------------------- Referring to C15/C19.12.28. we think you are under a misapprehension in regard to the result of greasing the… | ||
| scan0228 | Evolution of a new effective scheme for front axle parallel control, known as Phantom Springing. | ||
| View original record | Pt. c. Hm. c. Hs. c. EP. c. Whr. c. CWB. X8410 BY8/G.17.1.29. PHANTOM SPRINGING. ---------------- Referring to Pt.4/EP/29.11.28. it has of course always been appreciated that parallel control for the… | ||
| scan0229 | Query from Melbourne regarding chassis springing specifications for Australian models versus English models. | ||
| View original record | Pt.3/EAP/17-5-29 MELBOURNE. - 17th May, 1929 Y8240 BY/Derby c.EP/Derby c.Hs/Derby c.Hm/Derby o.Whr./London In the last paragraph of Hm/NRC1/MW6-4-29, Captain Hallam mentions that he is under the… | ||
| scan0230 | Tests carried out on axle control loads and front spring ratings. | ||
| View original record | 48240 OY. from Hs/Rm. Hs/Rm8/LG26.6.29. 482420 With reference to your note of 13th.Inst. We carried out a test to ascertain what loads are thrown on the ball ends by quarreling of which you speak when… | ||
| scan0231 | Test report on the twist of an axle control, with a graph showing deflection versus load. | ||
| View original record | C O P Y. to DA. from Hs/Rn. c. to BY. AXLE CONTROL. Twist of axle control. [Graph Y-axis: Deflection in thous. J.] [Graph X-axis: lbs. load 'W'.] With reference to DA2/M25.S.27. We have carried out a… | ||
| scan0232 | Decision to standardize the spring chassis for Australia to match the English specification. | ||
| View original record | X8410 Pt. c. EP. c. Hs. c. Whr. BY/Cgh3/G.1.7.29. With reference to Pt3/EAP.17.5.29. it has now been decided to spring chassis for Australia the same as if they were for use in England. This… | ||
| scan0233 | Broken front springs for the Phantom model, comparing vehicles with and without front hydraulics. | ||
| View original record | X8410 Hs/Rn. 24.7.29. BROKEN FRONT SPRINGS - PHANTOM. -------------------------------- x8410 Cars not fitted with Front Hydraulics - -------------------- MC 4 years old. DC 2½ years old. Quarter… | ||
| scan0234 | Letter describing a test rig (SK-209) designed for testing road spring bedding. | ||
| View original record | x8410. OY-1 August 10th, 1929. Mr. R.W.H. Bailey, Mr. E. W. Hives, ✓ Rolls Royce Ltd., Derby, England. Gentlemen: ROAD SPRINGS - SECTION 7020/30 SK-209 shows the general idea of the rig we have made… | ||
| scan0235 | Procedure for bedding-in and testing leaf springs to eliminate squeaks. | ||
| View original record | - 2 - Procedure is as follows:- (1) Spring is built up without rebound clips, but with plates ground all over, polished etc. but not plated. (2) It is then put on the exercising rig and run for about… | ||
| scan0236 | Comparing American and English car springing, discussing spring stiffness, damping, and potential improvements. | ||
| View original record | HS.) FROM R. DA.) c. to SG. BY. 48410. R4/M26.10.29. T X.3900 X.7772 X.7410 X.8410 AMERICAN AND ENGLISH CAR SPRINGING. With reference to the difference in the American and English springing naturally… | ||
| scan0237 | Two schemes for lubricating the Phantom I cantilever spring. | ||
| View original record | X 8410 To R. from Hs/Rm. c. Sg. c. Wor. E. c. Da. Hy. Hs/RmA/AD11.11.29. PHANTOM I SPRINGING We have tried out two schemes of lubricating the cantilever spring in conjunction with the Repair Dept. one… | ||
| scan0238 | Continued note on spring lubrication, damper complaints, and shock absorber loading specifications. | ||
| View original record | Hs/Am4/ADL1.11.29 contd. -2- it is absolutely necessary for the spring to be lubricated to get good results. The complaints which the lubricated spring and the American type dampers sure demand the… | ||
| scan0239 | Drawing of a centrally lubricated cantilever spring. | ||
| View original record | No, OPERATION, MACHINE, TOOL, TOOL No RR771/SK(1) G.134.15.5.29 N & G LTD R2103 .625 .750 3.000 COUNTERSINK 3RD PLATE .750 DIA C BANJO TO BE SWUNG ROUND TO THE MOST CONVENIENT POSITION. 90° .750 .625… | ||
| scan0240 | Blueprint detailing modifications to lubricate the ends of cantilever spring leaves. | ||
| View original record | [ "R2058", "MODIFICATIONS TO CANTILEVER SPRING", "TO LUBRICATE ENDS OF LEAVES.", "SECTION THRO' SPRING EYE", "SCALE 1/1.", "DRILL .234 DIA.", "30°", "1.250 DIA. CUTTER", "SECTION THRO' END OF SPRING",… | ||
| scan0241 | Requesting an inspection car for work on the lubrication of Phantom I springs. | ||
| View original record | x.8410. To C. from Hs. c. H. Hs1/AD15.11.29. LUBRICATION OF PHANTOM I SPRINGS. With reference to the inspection car, which you say you can loan us for the job, we should require it at Derby for 3 or 4… | ||
| scan0242 | Modification to the cantilever spring lubrication to prevent leakage. | ||
| View original record | To Da. From Hs/Rn. X8410 Hs/Rn.1/AD15.11.29 & CANTILEVER SPRING LUBRICATION. We have made a small modification to the final arrangement of the lubrication at the front end of the spring to avoid… | ||
| scan0243 | Blueprint of a lubricated cantilever spring. | ||
| View original record | Top Table: No, OPERATION, MACHINE, TOOL, TOOL No Main Drawing Area: R2105 RR 77(15H) D.G. 134 15.S.'29 : N & C. LTD .750 .625 3.000 1.750 DIA CUTTER WEARING PLATE .187 .050 SECTION A.B. .050 WIDE Rx… | ||
| scan0244 | Adoption of drilled HP shock absorber valves and the lubrication of Phantom I springs with grooves. | ||
| View original record | *8410. x8410. x8520. x8980. Sg. from Hs/Sa. C. R. MOT. C. Rg. Ds. C. Ey. FD. C. C. TC. C. ILR. C. -------------------- Ha/Smi/AM.9.11.29. Adoption of drilled H.P. shock absorber valves and Lubrication… | ||
| scan0245 | Arrangements for an experiment on the lubrication of Phantom I springs. | ||
| View original record | X8410. S/W Hs. C9/C27.11.29 Lubrication of Phantom I Springs. Hsl/AD15.11.29 --------- Sg. would like this experiment carried out on his car. I am therefore arranging to send this to you on Monday… | ||
| scan0246 | Springing issues, weight distribution, and riding improvements for the Phantom I model. | ||
| View original record | Sg. MOT. CT. Hs. X 8410. HmW/W27.11.29. Springing - Phantom I. Our recent work on this subject has given us encouraging results. We find from experience that on the weight distribution depends the… | ||
| scan0247 | Ongoing tests on Phantom I suspension to address complaints of harsh low-speed riding and pitching. | ||
| View original record | X8410 To R. from Hs/Rm. c. Sg. Wor. c. Da. E. c. Hy. Hm. Hs/RM1/MJ10.12.29. X8770 X8005 X8840 X235 X8410 PHANTOM I SUSPENSION. In conjunction with the Repair Dept. we are carrying out tests… | ||
| scan0248 | Vehicle riding qualities, discussing pitching, springs, and hydraulic shock absorbers. | ||
| View original record | -2- pitching at the higher speeds is introduced. The light fabric body however, is most difficult to deal with as it has a tendency to pitch over the whole running range. Such cars also ride harshly… | ||
| scan0249 | Suspension improvements for light fabric-bodied cars and Phantom models. | ||
| View original record | -3- Hs/Rml/MJ10.12.29 contd. appears to be absolutely essential to get the full benefit from these weak springs. For light fabric bodied cars which we have so far failed to improve to any great… | ||
| scan0250 | Modifications for Phantom 1 special front springs. | ||
| View original record | x8410 To RIC. From Hs/Rn. Hs/Rn.5/MJ.10.12.29. PHANTOM 1 SPECIAL FRONT SPRINGS. We wish to modify a pair of special front springs A.8456 at present in the stores, to reduce their rating and increase… | ||
| scan0251 | Phantom I springing complaints and road tests of lower rated springs to reduce high-speed pitching. | ||
| View original record | X8410 X 8410 X 8005. Hs. C. to Wor. C. to C. C. to Da. Hm11/W31.1.30. Springing Complaints. Phantom I. We have now had an opportunity of testing the lower rated springs specially made with the object… | ||
| scan0252 | Request to modify a Phantom II bump chassis to test Phantom I front springs. | ||
| View original record | RHC. From Hs/Rn. x8410 Hs/Rn.1/MJ.1.2.30. PHANTOM II BUMP CHASSIS. x8410 We want to run a test on the bump of Phantom 1 front springs as soon as possible. We have no Phantom 1 bump chassis. We shall… | ||
| scan0253 | Improvements to the Phantom 1's ride by testing new front springs to reduce pitching. | ||
| View original record | To R. From Hs/Rn. c. to Wor. Sg. c. to E. Da. c. to Hm. By. x8410 Hs/Rn.1/MJ.3.2.30. X. 8410 X. 8770 - X8005. PHANTOM 1 RIDING. = It will be remembered that, although lubricating and plating the… | ||
| scan0254 | Query regarding a proposed 1.4 inch additional deflection in the front springs for the Phantom I and its effect on the vehicle's level. | ||
| View original record | Hs. X 8410 PN.4/WT11.2.30. "Phantom I" Riding. Referring to Hs/Rml/HAJ3.2.30. Will you state please whether it is proposed additional deflection in the front springs of 1.4" shall allow the car to… | ||
| scan0255 | Technical note on the Phantom 1 front spring deflection and camber. | ||
| View original record | PN. From Hs/Rn. X8410 Hs/Rn.3/MJ.11.2.30. PHANTOM 1 RIDING. With reference to PN4/WT11.2.30. The increased deflection of the front springs does not cause the car to ride out of level by that amount.… | ||
| scan0256 | The standardization of rolled eye chassis rear springs for the 40/50 HP model. | ||
| View original record | Y8410. [strikethrough]BM.[/strikethrough] c. to Hs. [strikethrough]C. to Wor.[/strikethrough] Roy/Dn5/EH18.2.30. [underline]40/50 HP. Chassis Rear Springs.[/underline] Further to our note of a… | ||
| scan0257 | The standardisation and performance of large deflection front springs for the Phantom 1. | ||
| View original record | To By. From Hs/Rn. c. to Da. Hn. 8410. Hs/Rn.1/MJ.10.3.30. LARGE DEFLECTION FRONT SPRINGS. PHANTOM 1. We have circulated a standardisation sheet for Phantom 1 front springs having 4.5" initial… | ||
| scan0258 | Letter requesting a special pair of Phantom I front springs with detailed specifications for urgent tests. | ||
| View original record | Experimental Department, December 17th.1929. RHC2/BE. J. Wortley Fawcett Esq., Messrs. Thomas Firth & Sons Ltd., Norfolk Works, SHEFFIELD. Dear Sir, We require for urgent tests, a special pair of… | ||
| scan0259 | Standardisation of chassis parts by adopting drilled HP shock absorber valves and lubricating Phantom I springs with grooves. | ||
| View original record | RR 755 REVISED (IGH) (DP.587 4-1-29) BM. 2/5943. x8410 COMPLETED 20.3.30. STANDARDISATION of CHASSIS PARTS. Date 20.11.29 Description of Parts. Adoption of drilled H.P. shock absorber valves and… | ||
| scan0260 | The experimental testing of rear road springs for the 40/50 HP chassis, detailing issues with clip positioning. | ||
| View original record | c. Hs. BY12/G. 21.3.30. 40/50 HP. CHASSIS - REAR ROAD SPRINGS. ---------------------------------------- With reference to rear road springs F.81737 with rolled eyes at the rear which Messrs. Firths… | ||
| scan0261 | Standardisation of chassis parts, specifically low-rating front road springs. | ||
| View original record | RR 785 REVISED (10H) (DF 687 4-1-29) BM. 2/5943. X8410 COMPLETED 27.3.30. STANDARDISATION of CHASSIS PARTS. Date 10.3.30. Description of Parts. 41/PL LOW RATING FRONT ROAD SPRINGS. Origin. To assist… | ||
| scan0262 | Road spring lubrication schemes and proposed improvements for 20 HP and 40/50 models. | ||
| View original record | BY. From Hs/Rm. Y8410 Hs/Rm. 2/MJ. 25.4.30. X5410 Y8410 + 20 HP. ROAD SPRING LUBRICATION. The scheme used on these springs was F.56844. The advantage of this scheme is that it allows the inside of the… | ||
| scan0263 | Comparing the car springing of American and English vehicles. | ||
| View original record | X8410 Sg. & Hs. from R. c. Wor. By. C. c. PN. EP. Hm. R5/M2.7.30. X.8410 X.7410 X.3900 CAR SPRINGING AMERICAN & ENGLISH COMPARED. Replying to Sgl7/El.7.30. with reference to the superiority of the… | ||
| scan0264 | Continued note discussing tyre complaints and a disagreement on modifying shock damper valves. | ||
| View original record | R5/M2.7.30 contd. 727 There are very few complaints when cars are so turned out unless the tyres are run unnecessarily hard, which can spoil any effort of ours. Finally, I do not agree to drilling… | ||
| scan0265 | Car springing with increased deflection to improve riding qualities. | ||
| View original record | SG. FROM R. X8410 R1/M27.11.30. C. to WOR. HS. SPRINGING - re. CAR RUNNING X.7410. C. to BY. EP. WITH INCREASED DEFLECTION. X.8410. X.7520. X.7350. We are all agreed that this is the only way we know… | ||
| scan0266 | Internal order for Phantom 1 front and rear road springs with specific technical requirements. | ||
| View original record | x8410 O.O. From Hs/Rm. Hs/Rm.1/MJ.28.1.31. X.4429. X.8410. Will you please order for us the following Phantom 1 road springs :- Rear. Unloaded Camber 3.75". Loaded Camber 1.5". Poundage at 1.5" Neg.… | ||