Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Trial of a 20/60 Vauxhall, detailing modifications to reduce radiator wobble and improve engine smoothness. | ||
| View original record | HS. FROM T. X459 E2/M27.1.30. C. to SG. R.(held up) re. RADIATOR WOBBLE X.7250 C. to WOR. BY. DA. AND ENGINE SMOOTHNESS. X.3995 X.457 Yesterday (Sunday) I made a short trial of the latest 20/60… | ||
| Scan002 | Report discussing the elimination of radiator movement by focusing on frame rigidity and suspension modifications. | ||
| View original record | (2) for the Marles steering box, the net result being quite a nice car, but still too much radiator movement, as when you tried my car. It is significant that this radiator movement has now been… | ||
| Scan003 | Experiments to solve 'radiator shimmy' by stiffening the frame, changing axles, and altering wheel sizes. | ||
| View original record | R. FROM DA. (held up.) X457 DA1/M29.1.30. C. to SG. WOR. C. to HS. BY. E. RADIATOR SHIMMY. X.457 X.7250 X.7380 The lines on which we are working on this problem are, stiffening the front end of the… | ||
| Scan004 | 'Radiator Jellying', discussing a new scheme involving single point body mounting and requesting sketches. | ||
| View original record | BY. From Hs/Rn. x457 Hs/Rn.3/AJ.15.2.30. RADIATOR JELLYING. x457 x7380 x7250 Of the various schemes which have been got out by Da. and Ev. curing this trouble, the one we are most anxious to try is… | ||
| Scan005 | Experiments to solve the 'Frame Jellying' problem, focusing on shock absorber mounting. | ||
| View original record | RHC. From Hs/Rn. X459. Hs/Rn.4/MJ.15.2.30. FRAME JELLYING. X.457 X.7380 X.7250 In reviewing our tests of this problem we find that the most promising experiment in hand appears to be that of mounting… | ||
| Scan006 | Technical memorandum discussing the causes and potential solutions for radiator shimmy. | ||
| View original record | Y457 TO HS/Rm. FROM EV. EV3/10.2.30. Y457. x7250 x7008 x7380. COPY TO EY. DA. SG. RADIATOR SHIMMY. With reference to your Hs/Rm.2/MJ.6.2.30. suggesting that we should change to harder rubber bushes… | ||
| Scan007 | Sketch and memo detailing a suggested experiment to cure radiator shimmy and address body torsional stiffness. | ||
| View original record | EV3/10.2.30. cont. Sketch of suggestion (2) PIVOT CUT AUTOVAC OFF FOR EXPERIMENT. RUBBER We wish you to go ahead with the testing of this as soon as possible as we believe that, if the removal of the… | ||
| Scan008 | Methods of observation used to study and reproduce the 'frame jellying' phenomenon. | ||
| View original record | To R. From Hs/Rm. (Held up). c. to Sg. Wor. c. to Rg. E. c. to BY. Da. c. to OY. EP. c. to Hm. Mx. c. to PN. y457 y457 x7380 x7250 FRAME JELLYING. METHODS OF OBSERVATION. To study this phenomenon on… | ||
| Scan009 | Analysis of the nature of 'Frame Jellying', its frequency, and its relation to high-speed wobble. | ||
| View original record | -2- and frequency of the mascot movement. NATURE OF FRAME JELLYING. By means of the apparatus above described, we obtained the following information :- (1) Frame Jellying is an embryo high speed… | ||
| Scan010 | Analysis of vehicle frame twisting, engine movement, and the phenomenon known as 'jellying' or wobbles. | ||
| View original record | -3- from side to side, or .187" in either direction from the central position. The greatest amplitude of movement that we have produced by our artificially excited test is .650". Therefore the angle… | ||
| Scan011 | Experiments to mitigate chassis 'Jellying' through shock damper loading and altering frame periodicity. | ||
| View original record | -4- to the axle. Thus a bare chassis is practically immune from "Jellying". When a body is fitted the periodicity of the frame is altered, in almost every case to the detriment of the steering and… | ||
| Scan012 | Experiments with spare wheel positioning, body attachments, and sub-frame mountings to improve vehicle damping. | ||
| View original record | -5- (c) As a further parallel experiment we tried with and without spare wheels in the side position. Carrying the spare wheels at the side made a definite improvement. Altering the Body Attachment.… | ||
| Scan013 | Experiments to improve front axle assembly and steering performance, detailing ten tests that yielded no improvement. | ||
| View original record | -6- . to that of a close coupled saloon like 1-WJ. It will be appreciated that this question is somewhat complicated and involved and we are still working on it. Altering the Front Axle Assembly. We… | ||
| Scan014 | Summary of investigations into chassis 'jellying' and potential remedies. | ||
| View original record | -7- SUMMARISING THE POSITION. We think we have explained the difference between different cars. While bodies vary, the most noticeable difference on cars in service will be as to whether the wheels… | ||
| Scan015 | Instructions for fitting spare wheels and using extra damping between the scuttle and the dash. | ||
| View original record | -3- fitting the spare wheels at the side and using extra damping between the scuttle and the dash. Hs/Rn. | ||
| Scan016 | Blueprint of a vehicle test rig and associated recording apparatus. | ||
| View original record | Hs 267, TEST RIG, RECORDING APPARATUS., 1/10 SECS, PAD MOVEMENT | ||
| Scan017 | Blank document page with a purple ink stamp from the print room. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 20 FEB 1930 DERBY | ||
| Scan018 | Tenth report of the design committee discussing frame jellying, rear axle failure, and battery recharging capacity. | ||
| View original record | X457. R.(Held up). Sg. Wor. By. E. Hs. Rg.1/LW.5.3.30. X.457 X.7380 X.7250 X.7535 TENTH REPORT OF DESIGN COMMITTEE. Frame Jellying. This problem was discussed again at some length, both as regards a… | ||
| Scan019 | Conclusions of tests aimed at resolving frame and radiator vibrations, or 'jellying'. | ||
| View original record | To R. From Hs/Rn. (Held up). c. to Sg. Wor. c. to Rg. E. c. to By. Da. c. to Oy. Ep. c. to Hn. MX. c. to PN. Hs/Rn. S/MJ.12.3.30. X.457 X.7250 X.7380 FRAME AND RADIATOR JELLYING. We have now concluded… | ||
| Scan020 | Hope of overcoming axle trouble through design improvements. | ||
| View original record | been able to do to the axle as yet, however, gives us much hope that the trouble can be overcome by design at this point. HS/Rn. | ||
| Scan021 | Explanation of measurements from various tests shown on an attached print, relating to vehicle frame, engine, and radiator movement. | ||
| View original record | EXPLAINING THE MEASUREMENTS SHEWN ON THE ATTACHED PRINT. CURVES A & B. Demonstrate that the rubber mounting allows the engine to float so that its amplitude of movement is not so great as that of the… | ||
| Scan022 | 'Jellyfing Experiment' related to a three-point engine suspension. | ||
| View original record | X457 By. from Da. c. Hs. Da8/G13.3.30. X. 457 X. 7005 JELLYING EXPERIMENT - THREE POINT ENGINE SUSPENSION. Herewith N. Sch. 3057 shewing a temporary front support for the engine in the above… | ||
| Scan023 | Frame and radiator 'jellying' issues observed in the 20-HP chassis, comparing them to the Phantom II. | ||
| View original record | Y457. EP3/H20.3.30. x 457. x 5380. x 5280. FRAME & RADIATOR JELLYING - 20-HP. With reference to your report on the above, Hs/Rm.6/MJ.12.3.30. and as discussed with you today I am of the opinion that… | ||
| Scan024 | Fifteenth design committee report discussing oil filters, jellying on the Phantom car, and a compression ignition unit. | ||
| View original record | COPY. X457 R. (Held up). Sg. Wor. By. E. Hs. Rg.3/LW.21.3.30. X.2924 X.4037 X.7250 X.457 X.4433 FIFTEENTH REPORT OF DESIGN COMMITTEE. Oil Filter on Phantom. The scheme for an Auto Klean filter in the… | ||
| Scan025 | Test report on radiator jellying, comparing steering performance with different spring and shock absorber configurations. | ||
| View original record | x457. RADIATOR JELLYING. Tests were carried out fitting 25% stiffer front springs to 22-EX and front springs having 4.45" initial deflection to 20-EX. With standard shock absorber loading 22-EX… | ||
| Scan026 | Body distortion caused by radiator 'jellying' and the effect of torque reaction dampers. | ||
| View original record | -2- body and the doors etc., distorted tremendously when the radiator was 'jellying'. We found that the torque reaction dampers had a slight affect on radiator 'jellying'. HS/Rm | ||
| Scan027 | Analysis of wheel wobble (shimmy) and steering reactions, detailing the causes and the adoption of an elastic shackle as a solution. | ||
| View original record | X457 WHEEL WOBBLE. FILE UNDER Considerations which Led to Adoption of Elastic Shackle [29598.]—It is necessary to distinguish between two different phenomena, both generally called “shimmy.” What we… | ||
| Scan028 | Modified radiator mounting scheme to resolve a 'jellying' complaint and requesting a car for testing. | ||
| View original record | Sg. From Hs. C. to C. WOR. X457 Hs.1/MJ.1.4.30. RADIATOR JELLYING. X457 Y7250 We expect to have this week, a modified scheme of radiator mounting which will overcome complaints of radiator 'jellying'.… | ||
| Scan029 | The road testing of four cars, detailing issues with radiator jellying, engine vibration, and brake groans. | ||
| View original record | To: Hs. N457. Rm1/RJ.1/4/30. Radiator Jellying We tried four cars in London yesterday. They have mended the Hendon road where we used to make our steering tests, but one could get a fair impression of… | ||
| Scan030 | Vehicle's performance, noting a sticky gear change and engine roughness at high speed. | ||
| View original record | -2- The only obvious defect was a sticky gear change, but this should not prevent the car going South. It should hold the road reasonably well when increased shock-damper loading has been fitted. I… | ||
| Scan031 | Short memo concerning a radiator welling issue and the arrangement to send a car. | ||
| View original record | S/W Hs. X457 Y457 x7250 C10/C2.4.30. RADIATOR WELLYING. ------- We shall want to use 1-WJ up to the end of this week; we shall then have another car in that we can use, I hope, so that we can send it… | ||
| Scan032 | Proposing solutions to a vehicle 'jellying' issue by adjusting damper loading and mounting points. | ||
| View original record | X457. To Rm. from Oy. Oyl/DM.5.4.30. Jellying. (1) Have you tried the effect of a high damper loading, say 120 lbs up and down, plus HP. valves with 1/32 hole, on jellying? (2) Have you tried the… | ||
| Scan033 | Proposed modifications to an experimental car to address frame jellying and improve engine smoothness. | ||
| View original record | From Hs/Rn. C.c. to Dr. 457 Hs/Rn.4/WJ.14.4.30. Y7380 Y457 FRAME JELLYING. We are about to build up an Experimental car as a model for the next 10,000 miles improvements on steering, frame jellying,… | ||
| Scan034 | Failure to cure 'radiator jellying' on car 1-WJ and requesting to retain the vehicle for further work. | ||
| View original record | 4457. Sg. From Hs/Rn. c. to Wor. c. to C. Hs/Rn.3/WJ.23.4.30. x7250 x4457 x7760 RADIATOR JELLYING. We failed to cure radiator 'Jellying' on 1-WJ with the single point mounting mentioned in… | ||
| Scan035 | Radiator 'jellying' on car 1-WJ and testing of EX cars. | ||
| View original record | To Sg. From Hs/Rn. c. to Wor. c. to PN. 8457 Hs/Rn.10./WJ.28.4.30. X7960 1-WJ. RADIATOR 'JELLYING'. We have now obtained some results on 1-WJ. We think that they are sufficiently good to put up to… | ||
| Scan036 | Scheduling of a car trial and the potential for delay due to parts removal. | ||
| View original record | X457 To C. From Hs/Rn. Hs/Rn.6/MJ.30.4.30. Y796. With reference to C.6/C29.4.30. We have written to ask if PN. can try this car with us on Friday. If Sg. agrees that we can leave the cure on the car… | ||
| Scan037 | Notes on 'Jellying' tests conducted on the first PII chassis (69 W.J.) at Springfield. | ||
| View original record | Rm. Jellying. x457.- Following notes on 69 W.J., first PII at Springfield may interest you. Chassis had side wheel carriers which were however not used, a spare wheel being always dumped in the rear.… | ||
| Scan038 | Standardisation of chassis parts for headlamps carried off the frame and stronger wing stays. | ||
| View original record | RR 785 REVISED (10H) (DG 348 19-7-29) 5M. 6/643. XU57 27.9.30. COMPLETED. STANDARDISATION of CHASSIS PARTS. Date 30.6.30. Description of Parts. HEADLAMPS CARRIED OFF THE FRAME AND STRONGER WING STAYS.… | ||
| Scan039 | Investigation into the phenomenon of radiator 'jellying', comparing it to 'high speed wobbles' and referencing the Phantom II. | ||
| View original record | CPX457 To R. (Held up). From He/sn. He/sn.2/MJ.29.4.30. c. to Sg. Wor. c. to Rg. E. c. to Ds. Hy. RADIATOR 'JELLYING'. As a result of a number of tests both on the road and on the Bumper we can now… | ||
| Scan040 | Modifications for existing cars and a summary of engine mounting trials to eliminate vibrations on the Phantom II. | ||
| View original record | -2- As this modification in no way alters the external appearance of the car it is what we propose to recommend for use on existing cars. Admittedly, as it has no effect on the frame movement, it does… | ||
| Scan041 | Analysis of flexible engine and body mountings concerning frame jellying and vibration issues. | ||
| View original record | -3- He/Ru.2/AL/26.4.30.Contd. (b) Flexible Engine Mounting Three points. Larger amplitude, lower frequency vibrations with less well defined periodicity. Require quite large pot holes to set them off… | ||
| Scan042 | Chassis and suspension development, focusing on subframe mounting, shock damper placement, and front spring stiffness. | ||
| View original record | -4- HS/RM.2/SJ.16.4.34. Contd. chassis as a whole and increased some of our front end problems. We have found no form of subframe mounting that gives sufficient improvement over standard with all… | ||
| Scan043 | Chassis dynamics, including torque reaction dampers, axle assembly, and engine mounting solutions. | ||
| View original record | -5- Hs/RL.2/LL.29.4.30Contd. (F) FRONT TORQUE REACTION DAMPERS. We found on the American Phantom I that we could detect a difference in the movement of the radiator when the torque reaction dampers… | ||
| Scan044 | Mitigating vehicle vibrations, specifically 'mascot jellying' and engine boom, through radiator design. | ||
| View original record | -6- HS/BN.2/BLG.16.4.30.Contd. radiator should then deal with any mascot jellying that may occur, and we should have less engine fuss and boom in the body without sacrificing the steering in any way.… | ||
| Scan045 | Test log documenting various modifications to a car to solve a 'jellyING' or vibration issue. | ||
| View original record | CONDITION OF CAR FOR TEST RESULTS OF TEST 1. 22.1.30 | 22 Ex. | STANDARD S.S. ENCLOSED LIMOUSINE | CONSIDERABLE AMOUNT OF JELLYING. ROAD SHOCKS EXCESSIVE. WINGS FLAP TOO MUCH. 2. 22.1.30 | 22 Ex. | 2… | ||
| Scan046 | Solutions for radiator jelly, body mounting, and chassis vibration. | ||
| View original record | X457. Hs/Bn. Da. } FROM R. E. By. } (At Le Canadel) C. to Sg. Wor. FN. C. to C. JHS. EP. RL/15.5.30. X.7380 X.457 X.5380 X.7250 X.7830 X.5250 X.5830 X.7005 X.5005. CAR WORK - RADIATOR JELLYING, BODY… | ||
| Scan047 | List of methods for insulating a vehicle from road vibrations and noise. | ||
| View original record | RL/MS.5.30 contd. -2- road vibrations that reach the body from the frame. We have then :- (1) The power unit and gearbox insulated from the frame (rubber) (2) The body insulated from the frame… | ||
| Scan048 | Dynamics of car riding and the three ways a car can oscillate: rear, front, and pitching. | ||
| View original record | X457. Hs. Da. } EP. } FROM R. C. Sg. Wor. C. PN. Hm. R2/112.6.30. Y457 CAR RIDING. We now all agree that there are 3 ways a car can oscillate:- (a) the rear. (b) the front. (c) the pitching. each… | ||
| Scan049 | Letter to A.G. Ionides at The Institution of Automobile Engineers regarding papers on 'Slow Speed Wobble' and 'High Speed Wobbles'. | ||
| View original record | (45) Expl. Dept. HS/Rn.4/MJ. June 3rd.1930. A.G. Ionides, Esq., c/o. The Institution of Automobile Engineers, Watergate House, Adelphi, LONDON. W.C.2. Dear Sir, Thank you very much for the copy of… | ||
| Scan050 | Test for a modified anti-jelly-ing scheme for engine mountings. | ||
| View original record | X 457 R. FROM E. E2/M28.2.31. C. to SG. WOR. C. to HS. DA/EV. re. ENGINE MOUNTINGS. X.457. X.7005. Referring to EV's anti-jelly-ing scheme described in DA/EV1/M27.2.31., we should like to make a test… | ||
| Scan051 | Proposal for engine mountings using a parallel motion linkage to add torsional rigidity and manage heat expansion. | ||
| View original record | R. FROM E. X4-57 E1/M17.3.31. C. to SG. WOR. C. to HS. BY. ENGINE MOUNTINGS. X.457. X.7005. In coupling the frame and engine together with parallel motion linkage for the purpose of adding torsion… | ||
| Scan052 | Test report on frame jellying and steering for the Phantom II model. | ||
| View original record | FOR FILES. 8457. Hs/Rm.1.4.31. X7380. FRAME JELLYING AND STEERING TESTS PHANTOM 11. Tests were carried out on the Ashbourne - Buxton Road with three cars - 27-EX. Four sandwich engine feet and std.… | ||
| Scan053 | Test report on engine booming and induction roar in car 27-EX compared to 26-EX. | ||
| View original record | -2- The booming of 27-EX. with all the four engine feet fitted was not excessive up to 65 m.p.h. At 70 m.p.h. there was a considerable roar from the induction system presumably due to the carburetter,… | ||
| Scan054 | Analysis of 'jellyfying' and road shock issues with proposed palliative measures. | ||
| View original record | X457. To R. From Hs/Rm. c. to Sg. Wor. c. to E. Da. c. to Hy. Fn. Hs/Rm.7/KT.2.4.31. x634. x457. BODY BOOMS P.II. With reference to R4/M25.3.31. (1) Proposed Palliative Measures. We note that on 18-EX… | ||
| Scan055 | Investigation into vehicle booming and radiator movement, summarising findings and proposing future permanent solutions. | ||
| View original record | (2) Hg/Rm.7/KT.2.4.31.cont. pressures, these two features may accentuate the jellying produced by removing the rear feet. One of the Bales cars that we treated for booming, 129.GN, was as bad for… | ||
| Scan056 | Investigations into frame vibration ('jellying'), comparing to Maybach and detailing experiments with engine mounts and frame stiffening. | ||
| View original record | (3) Hs/Rm.7/KT.2.4.31 cont. (b) with front rubber mounted engine feet to assist. That this can be accomplished we believe because at the Berlin Show we noticed that the Maybach was almost entirely… | ||
| Scan057 | Test report on an undamped frame stiffener for 'jellying' on car 25-EX. | ||
| View original record | Copy for files. UNDAMPED FRAME STIFFENER. X467 Gry. and Les. on the morning of 21.4.31. tested 25-EX for jellying. The car had low rating front springs, four sandwich front engine mounting, standard… | ||
| Scan058 | Assumptions about experimenting with stiffening side members. | ||
| View original record | HS. FROM DA. X457 DAL/M28.4.31. P. 2. JELLYING. X.457. X.7380. With reference to the question of stiffening the side members vertically we have assumed that you would be experimenting with this… | ||
| Scan059 | Frame distortion tests, specifically measuring torsional stiffness and front-end jellying. | ||
| View original record | To R. From Hs/Lid. c. to Sg. Wor. c. to E. Da. c. to Hy. J45 Hs/Lid.1/KT. 29.5.31. X.8380. X.7380. X.457. X.7005. X.8005. FRAME DISTORTION TESTS P.II. R.A.C.VII. AND P.I. We have carried out a series… | ||
| Scan060 | Vehicle frame jellying, comparing different engine mounting and chassis configurations on various car models. | ||
| View original record | (2) Hs/Lid.1/KT.29.5.31. The next test was carried out on a P.I. car with solid rear feet and sheet aluminium dashboard Fig.VI. The obvious difference is the increase of damping over P.II. in its… | ||
| Scan061 | Series of five graphs showing the results of frame deflection and distortion tests under various conditions. | ||
| View original record | Graph 1 (Fig I): Title: 20 Ex. FRAME DEFLECTION TESTS Legend: STANDARD, REAR ENGINE FEET OUT, STANDARD No BODY. Axis Labels: TORQUE LBS/FT, FRAME DEFLECTION ANGLE Figure: FIG I Graph 2 (Fig II):… | ||
| Scan062 | Stamped blank page from a document set. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 30 MAY 31 DERBY | ||
| Scan063 | Tests to investigate persistent steering jiggling on Phantom II cars. | ||
| View original record | To R. From Hs/Lid. c. Sg. Wor. C. E. Da. Ey. 8457 Hs/Lid3/ADL1.8.31. x457. x7430. P.II. STEERING. We have lately carried out a number of tests to find out more about the conditions which are necessary… | ||
| Scan064 | Comparative road tests investigating steering stability, suspension, tyre pressure, and track width. | ||
| View original record | Hs/lid3/AD31.8.31 contd. -2- The route chosen for the comparative tests was a straight road on which it was possible to maintain a speed of 50 M.P.H. over the majority of a twelve mile stretch. All… | ||
| Scan065 | Tests concerning steering column damping, spring effects, axle damping, and tyre performance. | ||
| View original record | -3- to damp it out almost entirely. Damping in the Column. This is of no use to us unless used in conjunction with the flexible shackle. Under these conditions the maximum permissible damping… | ||
| Scan066 | Spring eye movement during braking and joggle tests, and the development of a flexible shackle. | ||
| View original record | Hs/Lid3/ADS1.8.31 contd. -4- of the spring eye is always greater than forward movement, the difference being about 33% under main road conditions but becoming more equal on very bad potholed roads. We… | ||
| Scan067 | Diagram of a 'Snatchmeter' device for measuring steering movement. | ||
| View original record | STEERING 'SNATCHMETER'. THIS PORTION FIXED TO CAR. THIS 'PAWL' PERMITS ANTECLOCKWISE ROTATION OF RECORDING DISC & STOPS CLOCKWISE ROTATION. SPRING LOADED PAWLS. RECORDING DISC HAS VERY FINE KNURLING… | ||
| Scan068 | Blank page with a date and location stamp from Derby. | ||
| View original record | LIMITED A M, 21 AUG 31 DERBY. | ||
| Scan069 | Graphical analysis of the maximum movement of a flexible shackle spring eye under various driving conditions. | ||
| View original record | FLEXIBLE SHACKLE (HS 213) MAXIMUM MOVEMENT OF SPRING EYE HARD BRAKING TURNING ON FULL LOCK AS FAST AS POSSIBLE L.H. LOCK R.H. LOCK VERY BAD ROAD HITTING BUFFERS (20MPH) MAXIMUM RECORDED DURING AVERAGE… | ||
| Scan070 | Almost blank page with a purple archival date stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 31 AUG 31 | ||
| Scan071 | Table of steering tests using a snatchmeter to record joggling under various car conditions. | ||
| View original record | 20 EX. STEERING TESTS USING SNATCHMETER FOR RECORDING JOGGLING. TABLE DATA: COLUMN HEADERS: TEST NO | CONDITIONS OF DRIVING | CONDITION OF CAR AS TESTED | STEERING WHEEL MOVEMENT (TURNS) ROW 1: TEST… | ||
| Scan072 | Almost entirely blank or illegible document with a purple ink stamp. | ||
| View original record | ROLLS-ROYCE LIMITED 31 AUG 81 DERBY | ||
| Scan073 | Frame stiffness, body construction, and engine mounting strategies, with references to Packard and Lancia. | ||
| View original record | X457 SG. FROM R. re. FRAME STIFFNESS; BODIES, AND THE PACKARD. C. to PN. HS. R1/M19.9.31. Sent off 23.9.31. X.457. X.4085. X.4027. In most American motor cars the steel body constitutes a source of… | ||
| Scan074 | Query asking for an explanation for a severe steering wobble that develops after 10,000 miles. | ||
| View original record | RECEIVED 24 SEP S/W. Hs...from PN. Copy to Sg. X457. PN.10/WT24.9.31. 19-G4. After 10,000 miles the tendency to severe steering wobbles has developed between 20 and 12 m.p.h. Has there been any… | ||
| Scan075 | Complaints of steering joggles and shocks on Phantom II cars and proposed solutions. | ||
| View original record | 8457 R. From Hs/Lid. c. to Ss. Wor. c. to E. Da. c. to Hy. HS/Lid.2/HA.26. 2. 32. STEERING P.II. ------------------ We are constantly hearing of complaints of steering joggles and shocks on P.II cars;… | ||
| Scan076 | Steering irreversibility, flexible shackles, and a proposal for a 10,000-mile test on car 19-KX. | ||
| View original record | -2- Hs/Lid.2/AM.26.2.32.Contd. our own. It appears that a more nearly irreversible steering than ours is generally used, the flexible shackle in combination with quite flexible steering rods is… | ||
| Scan077 | Recurring issue of 'frame jellying' and tests on potential solutions. | ||
| View original record | 8457 To R. From Hs. c. to Sg. c. to WDr. c. to E. c. to By. c. to Da. RE. FRAME JELLYING. This complaint still crops up periodically. A very good example is 20-G4, which is running at Le Canadel. When… | ||
| Scan078 | Fitting of a spring shackle for steering joggles on models P.2., J.3., & J.1. | ||
| View original record | HS. E. } FROM R. DA. BY. } (At Le Canadel.) X457 R3/M573.32. Sent from WW. 7.3.32. Copy to - SG. WOR. X.457 X.433 STEERING JOGGLES - P.2., J.3., & J.1. It would seem quite definitely settled that a… | ||
| Scan079 | Severe 'jellying' issue with a demonstration car (60-JS) ahead of Continental trials and seeking a solution. | ||
| View original record | X457. S/W..Hs. c. to PN. C3/08.6.32. x7960. Re Continental Type Trials Cars. --------o-------- We are in a very difficult position in regard to one of our Demonstration cars, viz. 60-JS. This is the… | ||
| Scan080 | Radiator wobbling and fan knocking issues on cars 61-JS and 16-MS, and arranging for repairs. | ||
| View original record | S/W Hs. X457 C7/C20.6.32. X4013 When you sent Mr. Leslie out to Paris to go into the question of 61-JS and the bad "jellying" in the front, he also dealt with a new car, No. 16-MS, belonging to Mr.… | ||
| Scan081 | Need to increase initial radiator movement on P.2 and N.2 series cars. | ||
| View original record | 8457 To EV. From Hs/Les. c. to MX. H. c. to WGT. Hs/Les./WGT. 21.6.32. X7250. INCREASED INITIAL RADIATOR MOVEMENT ON P.2. N.2 SERIES ONWARDS. We find that the required initial movement of the radiator… | ||
| Scan082 | Suggestion to alter the radiator bottom tank to address movement complaints. | ||
| View original record | -2- Hs/Les.3/KT.21.6.32. to slightly reduce the radiator movement. We suggest that the radiator movement be increased by altering the bottom tank of the radiator. We are issuing a depot sheet so that… | ||
| Scan083 | Customer complaint about radiator movement on a Fairhurst 16-MS car. | ||
| View original record | W/S. C. X457 Hs/Les.1/MA.22.6.32. FAIRHURST 16-MS. X4013. With reference to your C.7/C20.6.32, referring to Fairhursts car 16-MS, it is most unfortunate that Paris are unable to deal with this… | ||
| Scan084 | Complaint of radiator movement on Fairhurst's car 16-MS, including a list of attached parts for the repair. | ||
| View original record | K457 x4013 Mr. Robinson at Berlin. From Hs/Les. Hs/Les.1/MA.23. 6. 32. FAIRHURST'S CAR 16-MS. We have heard from C. to say that Fairhurst's car 16-MS, has a complaint of radiator movement. C.… | ||
| Scan085 | The despatch of parts and information to resolve radiator movement complaints. | ||
| View original record | To D/BP. From Hs/Les. c. to O.O. c. to Stores. V457 Hs/Les.3/MJ.23.6.32. We are sending to you for despatch to Mr. Robinson of Berlin, information for dealing with complaints of radiator movement. The… | ||
| Scan086 | Proposed test to demonstrate improvements to 'frame jellying' by adding weight to the engine. | ||
| View original record | RHC. From Hs/Les. 8457. HS/Les.4/WA. 28.6.32. 25-EX. FRAME JELLYING. We want to be able to demonstrate the improvement made to frame jellying by increasing the inertia of the engine. The time… | ||
| Scan087 | Proposal to test a stiffened sub-frame to understand and overcome the 'jellying' phenomenon in a chassis. | ||
| View original record | X457. H10. From Hs/Les. Hs/Les.6/MA.6.7.32. JELLYING P.2. V7380. A bare chassis does not jelly. We think jellying is caused from the rigidity of the body. We should like a sub frame which is immensely… | ||
| Scan088 | Road tests conducted in France on chassis 60.JS, focusing on radiator and body movement. | ||
| View original record | To Hs/Rm. From G.W.H. X457 Hotel de France, Chateauroux, FRANCE. 14.7.32. EXPL. WORK CARRIED OUT IN FRANCE WITH RADIATOR MOUNTED ON ENGINE. CHASSIS 60.JS. We have carried out your tests with 60.JS.… | ||
| Scan089 | Results of road tests on vehicle component movement and vibration. | ||
| View original record | -2- (1) Test on a fairly good tarmac road up to speeds of 70 m.p.h. (2) Torque reaction dampers set at 10 lbs. (3) Bonnet given normal clearance at either end. (4) Speed 30 - 35 m.p.h. Result. (1) The… | ||
| Scan090 | Results of vehicle stability tests focusing on torque reaction dampers. | ||
| View original record | -3- The result was that the front of the car was more evenly balanced up and the N.S. front wing practically as steady as the O.S. ------- (Test 3). Conditions. Torque reaction dampers tightened up… | ||
| Scan091 | Test report detailing the results of vehicle dynamics and component movement under various damper settings. | ||
| View original record | (4) (1) The movement of the radiator sideways was 30% more rapid and devloped periods. (2) The bonnet definitely knocked to the same extent practically as with the first test. (3) Movement of the… | ||
| Scan092 | Test results comparing radiator movement, steering joggles, and torque reaction dampers, with observations on front wings. | ||
| View original record | (5) The results of these tests are :- (1) Compared with 19-EX taken over same road, No.3 test gives 10% steadier radiator movement. No appreciable difference in steering joggles. Wing movement 10%… | ||
| Scan093 | Conclusions of a report on radiator mounting, oscillation, and its effect on wing steadiness. | ||
| View original record | CONCLUSIONS OF 60.JS REPORT. We have placed the value of the radiator mounted on the engine at 30%, from observations of tests carried out with 60.JS, after building this car up with standard radiator… | ||
| Scan094 | Issue of radiator wing movement and frame 'jellying' on the Phantom II model and proposed solutions. | ||
| View original record | Y457 To R. from Hs. c. Sg. Wor. c. E. Da. c. By. Hdy. Hs.5/MA.18.8.32. Y750 Y780 P.II RADIATOR WING MOVEMENT AND FRAME JELLYING. This complaint is always with us, in fact some of the completed cars… | ||
| Scan095 | Test report on mounting the radiator on the engine for the Phantom II, including a basic sketch. | ||
| View original record | Re. MOUNTING OF RADIATOR ON ENGINE PHANTOM II. A number of tests were carried out on rough roads in France to find out the value of the radiator mounted on the engine. The tests proved that under the… | ||
| Scan096 | Requesting the urgent completion of a stiff subframe for frame jellying tests. | ||
| View original record | RHC. from Hs/Les. X 457. Hs/Les.11/KT.10.10.32. STIFF SUBFRAME FOR FRAME JELLYING TESTS. In view of future frame design the above has become rather urgent. Will you please, therefore, finish this… | ||
| Scan097 | 'frame jellying' issue on the 40/50 HP model 19-EX, discussing radiator movement and a proposed fix. | ||
| View original record | E. from Hs/Les. c. BY. c. Wor. X457 Hs/Les.5/KT.16.2.33. FRAME JELLYING - 40/50 HP. We have recently had a report from Hancock in France referring to 19-EX, in which he says - "On one of the rough… | ||
| Scan098 | Expressions for the determination of interference in involute teeth. | ||
| View original record | To E. from EFC. EFC/AT16.3.18. X.2044. RE INTERFERENCE IN INVOLUTE TEETH. As requested we are sending you expressions for the determination of interference in involute teeth, when this occurs,… | ||
| Scan099 | Determination of interference in involute teeth. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 28-4-17.) Bm. 2/158/13. -1- 16.3.18. X.2047 DETERMINATION OF INTERFERENCE IN INVOLUTE TEETH. Referring to diagram:- P1CP2 is the maximum possible (but not practical)… | ||
| Scan100 | Mathematical calculations for determining the conditions and extent of interference in pitch circles. | ||
| View original record | H.R. 235a (500 T) (S.D. 408. 28-4-17.) Bm. 2/156/13. -2- Contd. Let O1C = r, and O2C = s; be the radii of the pitch circles and a the addendum, then to express the condition of interference… | ||
| Scan101 | Calculations for determining gear interference, with an example for an Early Falcon epicyclic gear. | ||
| View original record | -3- Contd. and C F₁ = r sin θ Therefore extent of interference = C K₁ - C F₁ = √(s²sin²θ + a(2s + a)) - (r + s) sin θ Example. Early Falcon epicyclic gear. Sun wheel and planet pinion. Nos. of teeth… | ||
| Scan102 | Page 4 of a calculation, showing the steps to find a final dimension in mm and inches. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -4- Contd. = √(51 x .2504)² + 2 x 104 - 75 x .2504. = √163.07 + 208 - 18.78 = 19.26 - 18.78 = .48 mm. = .019" ═════════════════════ EFC. | ||
| Scan103 | Diagram for the determination of interference in involute teeth. | ||
| View original record | DIAGRAM FOR DETERMINATION OF INTERFERENCE IN INVOLUTE TEETH. ADDENDUM CIRCLE PITCH CIRCLE BASE CIRCLE ROOT CIRCLE LINE OF ACTION. O₁ O₂ r s x y θ Φ P₁ P₂ K₁ K₂ 26 JAN 1928 DERBY. E.F.C 15/3/18 | ||
| Scan104 | Request for four photostat prints of a diagram for the determination of the interference of involute teeth. | ||
| View original record | To EFC. from E. E2/G17/4/19. X.2044. RE DIAGRAM FOR INTERFERENCE OF INVOLUTE TEETH. We attach herewith a diagram that you made some-time ago for the determination of the interference of involute… | ||
| Scan105 | Confirming the dispatch of four photostat copies and an original diagram regarding the interference of involute teeth. | ||
| View original record | To E. from EFC. EFC2/T28.4.19. X.2044. RE INTERFERENCE OF INVOLUTE TEETH. As requested in your E2/G17.4.19., we are sending you herewith, four photostat copies of diagram, together with original. EFC. | ||
| Scan106 | Diagrams and calculations for interference in involute teeth for a sun wheel and planet pinion. | ||
| View original record | 190 H.P. Sun Wheel & Planet Pinion Interference in involute teeth .021" .020" .007" .0075" D .0025" 51 teeth. 102 mm dia. 2 module Addendum circle Addendum circle 24 teeth 48mm dia. 2 module OB = 6.01… | ||
| Scan107 | Diagram and calculations for a 250 HP Sun Wheel and Planet Pinion gear mesh. | ||
| View original record | 250 H.P. Sun Wheel & Planet Pinion. Scale 5/1 X 2044 45 teeth 12 D.P. 3.750 dia. P' = π/12 = .2618 P' cos 14 1/2° 1.875 + .083 = 1.958" Root Circle Base Circle Pitch circle Addendum Circle 14 1/2°… | ||
| Scan108 | Sternol Oil received from the Royal Aircraft Factory for experimental use. | ||
| View original record | EP to R. Copy to Wor. for E.H. J. EP/T23/F10316. Re Sternol Oil. ---------- With reference to your memo R18/B26216, this oil came direct from the Royal Aircraft Factory Stores. It has now been handed… | ||
| Scan109 | Chasing a report on the R.A.F. oil known as Sternol. | ||
| View original record | 27416 COPY. H.H. 836 A for EH from R. (text 'for EH' is struck through) C. to J. c. to Na. c. to By. R4/DB26416. April 26th 1916. Re Sternol. I have not seen any report either from you, Mr Nadin or… | ||
| Scan110 | Requesting the analysis results for a sample of Sternol oil for Mr. Royce. | ||
| View original record | [Typed text] S18/DB15516. X.2049. With reference to Mr Royce's memo R18/B26316, re the test of Sternal Oil, we have not at present received a report on the sample which we understand was sent away for… | ||
| Scan111 | Report on Sternol Oil, its use in aero engines, and a price comparison with Castrol. | ||
| View original record | X2049 To R. from Rd. Copy to J. BY. RH. MF. H. 27th May 1916. Na2/S27516. re Sternol Oil. We have now received Messrs. Prices' report on the sample of Sternol Oil which we submitted to them on April… | ||
| Scan112 | Letter from Prices' Company Ltd. regarding a delayed analysis of an Aero Engine Oil sample and potential substitutes. | ||
| View original record | COPY. Prices' Company Ltd., Battersea, LONDON. S.W. 25th May 1916. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Sirs, ref. Na1/S28416. We regret that in consequence of extreme pressure of… | ||
| Scan113 | Letter from Prices' Company Limited discussing oil viscosity tests and providing samples for trial. | ||
| View original record | -2- Messrs. Rolls-Royce Ltd., In this table we take the ascertained viscosity of each oil at 70°F. + 100 and we show percentage of viscosity at 120, 140, and 180°F. in relation to its initial… | ||
| Scan114 | Test report detailing the properties of various oil samples. | ||
| View original record | Particulars of Samples. Description Mark S.G. at 60F. Redwood Viscosity at Flash Pt. Open. Remarks. 70 F. 120.F 140F. 180F. Your sample. 899 1680 294 179 87 420 Pure Hydro-carbon Aero engine oil B… | ||
| Scan115 | Requesting a report and analysis results for Sternol oil. | ||
| View original record | To Na from St. SS/DB1616. June 1st, 1916. RE X.2049 -STERNOL OIL TEST. With reference to Mr Royce's memo R18/B26316, on the 15th ult., you wrote us saying that you would let us have Messrs Prices'… | ||