Rolls-Royce Archives
| Identifier | Entry | ||
| 06-page001 | The moment of inertia for the Goshawk flywheel and clutch. | ||
| View original record | R.R. 492a. (500) (D.B. 17) 2-9-24) J.R.S. √5300 EXPERIMENTAL REPORT Expt. No. REF: Hs/ACL/LG19.12.24 MOMENT OF INERTIA OF GOSHAWK FLYWHEEL AND CLUTCH. 44244 The moment of inertia of the Goshawk… | ||
| 06-page002 | Authorisation sheet for a modification to the clutch coupling rod for model 'India'. | ||
| View original record | V5300 Secret. GG. C. Hs. HYS/H. 24.4.25. "INDIA". AUTHORISATION SHEET NUMBER 7. We find that a coupling rod between the clutch pedal and the clutch operating lever, which is instructed for "India", is… | ||
| 06-page003 | 'India' authorisation sheet to modify the coupling rod and clutch operating lever. | ||
| View original record | 45300 Works Synd. No. ----- BY4/H. 27.4.25. "INDIA" AUTHORISATION SHEET NO.7. I have received CJ's authorisation to modify the coupling rod as agreed to by Wor. on the Clutch Pedal and the angle of… | ||
| 06-page004 | Modifications to the 20 HP slipper flywheel to prevent spring bolt breakage, referencing drawing LeC.2126. | ||
| View original record | X. 5300 To EY. from E. c. to CJ. Hs. E2/M24.8.25. 20 HP. SLIPPER FLYWHEEL. X.5300 We send you herewith drawing LeC.2126., shewing the 20 HP. slipper flywheel made with 4 strong dowel pins dowelling… | ||
| 06-page005 | 20 HP slipper flywheel failure in France, detailing the probable cause and proposed solution. | ||
| View original record | To Hs. from R. c. to CJ. EY. X.5300 R2/M25. 8. 25. 20 HP. SLIPPER FLYWHEEL. FAILURE IN FRANCE. Regarding the broken bolt on the 20 HP., this was probably caused through difference of friction, or… | ||
| 06-page006 | Drawing for a Slipper Flywheel, clarifying that the dowels do not need to be hollow. | ||
| View original record | To BY. from E. c. to CJ. Hs. +5300 E1/M31. 8. 25. RE. EAC. SLIPPER FLYWHEEL. X. 8300 X. 5300 We send herewith drawing Lec. 2131, shewing the above fitted with dowels as per our alteration to Goshawk.… | ||
| 06-page007 | Standardisation proposal for slipper wheels fitted with dowel pegs to improve reliability. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. Description of Parts: SLIPPER WHEELS FITTED WITH DOWEL PEGS. Origin: To improve reliability. Experimental Test Report: This is a similar modification to that proposed… | ||
| 06-page008 | Clutch failure issue on the 20-HP chassis where the clutch sticks when hot. | ||
| View original record | X5300 Hs. EP12/Hl1.1.26. re. 20-HP. Chassis Clutch Failure. A customer has raised the point that after using his clutch rather vigourously he found that the clutch actually stuck in, and would not… | ||
| 06-page009 | Modification to the 20HP undershield to prevent it fouling the flywheel and brake levers. | ||
| View original record | To HS. FROM R. X5300 R10/H10.6.28. Copy - BJ. " - WOR. " - BY. " - DA. re 20HP. UNDERSHIELD. - X.5290. It was noticed while inspecting the cars here on Tuesday last that the 20HP. undershield is still… | ||
| 06-page010 | Recurring issues with the Slipper Drive on 40/50HP and 20-HP models, particularly after a chassis has stood idle. | ||
| View original record | [Handwritten top] E from HS [Handwritten header] From Mr: Hx. X5300 [Stamp] RECEIVED NOV 18 1926 Slipper Drive - 40/50HP. and 20-HP. Although we have done very useful work in improving the above with… | ||
| 06-page011 | Recurring issues with the slipper drive and friction damper on 40/50 and 20 HP models, particularly after standing for a period. | ||
| View original record | To E. from Hs. X5300 Hsl/T22.11.26. SLIPPER DRIVE. 40/50 AND 20 HP. X5300 Below is memo we have received from Mx. in the Test Dept. This is to remind you that our friction damper does need… | ||
| 06-page012 | Inconsistent working and known weakness of the slipper wheel drive on the 20 HP and Phantom models. | ||
| View original record | To P.N. from Hs. c. to B.J. c. to C. c. to CWB. c. to EP. X5300 HS5/LG29.11.26. 20 HP. TRIALS SALOON - GYK-10. X5950 Rx300 When I drove this chassis to the Station, I could not appreciate that there… | ||
| 06-page013 | Request for particulars on lubricating the 20 HP chassis clutch for inclusion in a leaflet for owners. | ||
| View original record | To HS/Ru. From BY/NW. X 5300 BY/NWL/H4.5.27. LUBRICATING CLUTCH - 20 H.P. CHASSIS. Can you please let us have as early as possible the promised particulars regarding the method of applying a 50%… | ||
| 06-page014 | Outlining suggestions for reliability modifications to the 20 HP Starter and improved Bijur system. | ||
| View original record | X5300 Hs. BY. from R. c. to BJ. Wor. E. 20 HP. STARTER. X.3650 RR. IMPROVED BIJUR. X.3587 X.5300 Since Mr. Hancock has found some defects and cures, we ought to push on with proving these first… | ||
| 06-page015 | Proposal to modify the 20 HP slipper flywheel to match the Phantom design and an instruction for testing new friction materials. | ||
| View original record | BY. from E. c. to BJ. Hs. VS300 E2/M29.9.27. SLIPPER FLYWHEELS. 20 HP. & PHANTOM. X.5300 X.8300 With reference to the recent designs of slipper flywheels, we propose to modify the 20 HP. to make it… | ||
| 06-page016 | Materials for Slipper Flywheel friction discs, comparing fibre with woven cotton and cork for the 20 HP and Phantom models. | ||
| View original record | E. from By. c.to Hs. Y5300 By9/J4.10.27. Slipper Flywheel. V5300 F8300 X356 20 HP. and Phantom. Referring to E2/M29.9.27, we are of course employing fibre for the Friction Discs on the new Phantom… | ||
| 06-page017 | Potential materials, specifically plain cotton duck and cork, for use in slipper flywheel friction discs. | ||
| View original record | E. Dept. from BY. c. to Hs. c. to Roy. X 5300 BY/IO/J4.10.27. Slipper Flywheels - Friction Discs. X.356 X.5300 X.8300 R. has suggested that as a result of American experience we should try some plain… | ||
| 06-page018 | Proposing a modification to the 20 HP clutch flywheel to facilitate lubrication. | ||
| View original record | K5300 By. C. to Hs. Hm/NRC4/KW11.10.27. Re 20 HP. Clutches. In view of the fact that under certain conditions occasional doping of the 20 HP Clutch Plate with paraffin and oil is recommended, we feel… | ||
| 06-page019 | Short internal memo agreeing to a suggestion regarding 20 HP clutches. | ||
| View original record | To Hm/NRC. from Hs/Rn. c. to EY. /5300 Hs/Rn1/L/G13.10.27. Re. 20 HP. CLUTCHES. With reference to the last para. in Hm/NRC4/KW11.10.27. We consider that this would be a very good idea. Hs/Rn. | ||
| 06-page020 | Bench test results for slipper wheels with cotton duck friction rings and placing an order for parts. | ||
| View original record | To BY. from Hs/GWH. V5300 GWH1/LG7.11.27. SLIPPER WHEELS. X5300 Y356 The results of the bench tests taken with a slipper wheel fitted with cotton duck friction rings are very promising. We do not get… | ||
| 06-page021 | Investigation into a multiple clutch design for the LdC. 2442, detailing tests with different materials and spring configurations. | ||
| View original record | To R. From Hs/GSL. P.P.CS. S.S. B.J. HOF. T.S. H. E. U BY. DA. (X5300) Ha/GHS/LGS.11.27. 20 HP. STANDR. (X5650) INVESTIGATIONS WITH MULTIPLE CLUTCH TO LdC. 2442. We have had this clutch built up and… | ||
| 06-page022 | The performance of a lubricating scheme and the results of using a specific brand of oil. | ||
| View original record | contd :- -2- The lubricating scheme is quite satisfactory and during our tests this has been made full use of. We find that Prices Motorine 'C' oil gives us the best results, heavier oils are inclined… | ||
| 06-page023 | Exhaustive tests of two schemes for a 20 HP starter motor, detailing failures related to cork washers and buffer springs. | ||
| View original record | To R. From He/GWH. c. to S.J. Wor. c. to E. DA. c. to HY. X5300 Hg/RHCL/L623.11.27. 20 HP. STARTER MOTOR TO LeC. 2441. SCHS. 1 & 2. X5300 X5650 We have given these schemes exhaustive tests fitted to a… | ||
| 06-page024 | Report page detailing findings on a clutch slipping issue, including test rig reproduction and clutch spring specifications. | ||
| View original record | contd :- -2- slipping occurred. We found this could be reproduced on the test rig by applying an extra load on the brake, the slipping occurring as stated previously. The clutch spring D.51611 giving… | ||
| 06-page025 | Recommendation to standardise the 20 HP starter motor to the multiple clutch type. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. DA. c. to BY. X5300 HsS/LG23.11.27. 20 HP. STARTER MOTOR. X5650 After testing all the alternative schemes for the 20 HP. starter motor, we recommend that we… | ||
| 06-page026 | Achieving satisfactory results for a 20 HP Starter Motor with a multiple clutch. | ||
| View original record | To R. from Ha/GWH. c. to BJ. WOT. c. to E. DA. c. to BY. Y5300 Y5650 20 HP. STARTER MOTOR TO LeC.2442. (MULTIPLE CLUTCH). We have now got this scheme to give very satisfactory results. There is no… | ||
| 06-page027 | Clutch material tests, comparing cork and Ferobestos discs under different oily and wear conditions. | ||
| View original record | contd :- -2- The unit was wound up as when starting the engine. We give the following loads obtained in the tests :- Conditions. Load at lever,lbs. Torque at pinion. lbs.ins. Torque at engine shaft.… | ||
| 06-page028 | Test results and modifications for clutch and starter motor components. | ||
| View original record | contd :- -3- loads will occur. We find that to ensure a free and smooth action of the drive it is necessary that the brass plunger D.51580 is free in the housing of D.51577 otherwise a grabbing action… | ||
| 06-page029 | Weight reduction on a 20 HP chassis by modifying the flywheel, clutch, and engine head. | ||
| View original record | To Hs. from R. c. to BJ. Y/5300 R2/M28.11.27. 20 HP. X.5300 X.4538 Will you try the effect of reducing the weight of the flywheel and clutch. This appears to be about the only part on this chassis… | ||
| 06-page030 | The disappointing ride quality, slipper drive, and engine vibration of a GAK-52 Barkerlite Limousine. | ||
| View original record | X5300 To FH Capt. Hon. [Crossed out: To Mr. Hives] [Crossed out: Mr. Rowledge] HC. MM. RR. Wor1/T.12.12.27. GAK-52. Barkerlite Limousine. PH1/HNT.12.27. Hs., HP. and Hx. have tried this car, and the… | ||
| 06-page031 | Blueprint for a proposed lightened flywheel. | ||
| View original record | OPERATION MACHINE TOOL TOOL Nº WEIGHT LBS.: A 40.51, B 9.837, C 15.36 PRINCIPAL AXIS OF GYRATION INS: A 6.656, B 4.094, C 5.59 POLAR MOMENT OF INERTIA LB.IN.S²: A 179.4, B 36.84, C 47.88 Exp^t OMLT.… | ||
| 06-page032 | Recommendation to delete a lubricating scheme for the 20 HP multiple clutch due to oil congealing in cold weather. | ||
| View original record | To BY. from Ha/GWH. c. to E. X5300 Ha/GWH1/LG21.3.28. RE. 20 HP. MULTIPLE CLUTCH. STARTER MOTOR D.51578. X5626 In view of this scheme becoming standard, it should be noted that the lubricating scheme… | ||
| 06-page033 | Tests carried out on a lightened 20 HP clutch, detailing weight reduction and performance. | ||
| View original record | To R. from Hs/Rn. c. to BJ. Wor. c. to E. DA. c. to EY. CY. X. 5300 Hs/Rn2/LG14.4.28 20 HP. LIGHTER CLUTCH. We have carried out tests on a lighter 20 HP. clutch. The weight of the std. clutch is… | ||
| 06-page034 | Blueprint for a proposed lightened flywheel design. | ||
| View original record | RR PHONE 362 363.364. DERBY & R.R.LTD. 2 prints to Engine Dept 13.12.27. OPERATION MACHINE TOOL TOOL N° TABLE: A | B | C WEIGHT | 40.51 | 9.937 | 15.36 RADIUS OF GYRATION INS. | 6.656 | 6.084 | 5.59… | ||
| 06-page035 | Over-run vibration issues with a lighter 20 HP flywheel and potential solutions based on a Chrysler model. | ||
| View original record | Hs. from E. c. to BJ. V5300 E1/M3.5.28. RE. LIGHTER 20 HP. FLYWHEEL. X.5300 X.5005 X.4012 AXHIER Are we sure that the over-run vibration is not intensified by the use of a lighter flywheel? This… | ||
| 06-page036 | Modification to the India 3 clutch thrust for improved oil retention. | ||
| View original record | X.5300 BY. from DA. c. to BJ. Hs. DAL/1631.5.28. INDIA 3. CLUTCH THRUST. Herewith we send N.sch.2616 shewing the modification to the clutch thrust to make it more oil retaining, on the lines of… | ||
| 06-page037 | Valve oil supply and clutch shudder issues on Phantom and 20 HP cars. | ||
| View original record | Hs. from R. c. to BJ. Wor. BY. X5300 R4/119.10.28. PHANTOM AND 20 HP. CARS. 12-G.4. X.5770 X.5080 X.5300 I am convinced that it is necessary to give all the valves ample oil supply. I find it… | ||
| 06-page038 | Clutch 'jagger' issue and special valve guide clearances on a 20 HP car. | ||
| View original record | To R. From Hs. c. to BJ. Wor: c. to E. DA. c. to BY. X5300 He4/LG22.10.28. 20 HP. 12G-4. X5300 X5060 The clutch on this car was inclined to jagger before the car was sent to WW. but we thought there… | ||
| 06-page039 | The limitations of a one-stage relief valve and the proposal for a 3-stage valve for the 20 HP model. | ||
| View original record | contd :- -2- that car is that we only have a one-stage relief valve. The feed to the rockers is simply the over-flow oil and is under no definite pressure. The new type relief valve which was made for… | ||
| 06-page040 | Arranging to test a freewheel with a cancelling clutch on a 20 HP and an epicyclic 3rd gear on EAC.7. | ||
| View original record | X5300. Hs. from R. c. to BJ. DA. c. to SG. HL/M20.11.28. EASY THIRD GEAR. AND GEAR CHANGING. X.5310 X.523 X.5300 X.7640 I have arranged with DA. that we will try the freewheel with the cancelling… | ||
| 06-page041 | Technical diagram and notes on the 25 HP clutch pedal movement and lever adjustments. | ||
| View original record | A. 4/4/8 25 HP CLUTCH MOVEMENT OF CLUTCH PEDAL INCREASED BY 25% TRUNNION LEVER TILTED BACK 21° PEDAL LEVER (SHORTENED) TO 2.300 TRUNNION " (LENGTHENED) TO 3.750 CLUTCH PEDAL 15° CLUTCH TRUNNION 15° | ||
| 06-page042 | Blueprint for a Clutch Intermediate Lever. | ||
| View original record | OPERATION TABLE: No 1: USE FORGING F50026F No 1A: HEAT TREAT No 2: SAND BLAST No 2A: LIGHTLY GLAZE PLAIN SIDE No 3: SURFACE GRIND BOTH SIDES TO THICKNESS No 4: DRILL & REAM LARGE BOSS No 5: DRILL &… | ||
| 06-page043 | Engineering drawing for a clutch lever. | ||
| View original record | OPERATION No. 1 USE FORGING (G50230F) (OR G50230) No. 1A FORGE No. 1B HEAT TREAT No. 2 SANDBLAST No. 2A LIGHTLY GLAZE ONE SIDE No. 3 SURFACE GRIND BOTH SIDES TO THICKNESS No. 4 DRILL, MACHINE: M… | ||
| 06-page044 | Blueprint for a bush component with drilling and chamfer specifications. | ||
| View original record | OPERATION MACHINE TOOL TOOL Nº WOODRUFF KEYWAY AUTO FLAT FORM A45217 CENTRELESS GRIND C.G. M/C WHEEL SEE NOTE A45218 CENTRELESS FINISH GRIND C.G. M/C WHEEL SEE NOTE A45218 (G.L. 38487) C5345S CHAMFER… | ||
| 06-page045 | Blueprint of a clutch operating lever. | ||
| View original record | O.R. 5802/SH/DF. 80.R-10-28) N & C L'TD. 12328 G 14782 C4 G51037 G 51605 REPLACE ALL COPIES TO: EXP. PATT WORKS FORGE T.O. B.R. D.O. AMERICA R.A. COST DRAWN TRACED: H.L. CHECKED APPROVED: H.E.C. DATE:… | ||
| 06-page046 | Blueprint for a Hardy coupling for a clutch. | ||
| View original record | Hs 374 No 7/11/30 S.L. FRICTION PLATE & RATIO ALTERED TO NEW DRAWING 28/11/30 S.L. HARDY COUPLING FOR CLUTCH L.S. 2830 HARDY FABRIC HS 52 SIMILAR DIMENSIONS & SPLINES TO GS 2834 SECTION H.S.C. 4.900… | ||
| 06-page047 | Damaged flywheels on the 20 HP model and the colour of the oil pressure gauge finger. | ||
| View original record | Pt. c. Hs. c. Whr. c. E. X5300 BY9/G.24.5.29. 20 HP. - re DAMAGED FLYWHEELS. Referring to Pt9/EAP/15.4.29. we are sending a copy of your memo dealing with this matter to WW. We are inclined, however,… | ||
| 06-page048 | Note on the 20 HP chassis regarding not reducing the weight of the flywheel and clutch. | ||
| View original record | X5300 BY/THE c. Hs. BY1Q/G.15.5.29. 20 HP. CHASSIS. ----------- Please note that it is important in view of the heavier pistons we are likely to fit owing to the increased bore that we should not… | ||
| 06-page049 | Letter discussing the design and placement of a slipper flywheel, comparing wet versus dry friction faces. | ||
| View original record | OY-2 June 19th, 1929. Mr. A. F. Sidgreaves, Rolls Royce Ltd., London, England. cc - Mr. Bailey Mr. Hives Dear Mr. Sidgreaves: Slipper Flywheel & Section 5020 We have in mind with regard to slipper… | ||
| 06-page050 | Page 2 of a letter regarding the time required for the examination of a slipper component. | ||
| View original record | - 2 - At present an examination of the slipper requires several hours of work in order to get at a job which takes only a few minutes to accomplish. Very truly yours, ROLLS ROYCE OF AMERICA, INC.… | ||
| 06-page051 | Design and experimental trial of a new 20HP auto friction damper flywheel. | ||
| View original record | X5300 By. from R. SECRET. K2/HS/22.6.29. Copy to Sg. Hs. X 5300 X 1109 X 614 20HP. AUTO FRICTION DAMPER FLYWHEEL. We send you herewith drawing Lec. 2719. giving particulars of the above. This flywheel… | ||
| 06-page052 | Cover note forwarding a letter about a RRAI Slipper Flywheel for comments. | ||
| View original record | HS X5300 To EV from Sg. To Hs. from Sg. ZLL/ RRAI. Slipper Flywheel. Section 5020. I enclose herewith letter received from OY. in regard to the above and should be glad of your comments to enable me… | ||
| 06-page053 | Suggestion to connect the 20 HP car's clutch trunnion to the Bijur pump for lubrication to prevent squeaks and rattles. | ||
| View original record | To Da. From Hs/Rn. X5300 Hs/Rn. 2/AJ.17.8.29. X5300 K3806. The clutch trunnion on the 20 HP. car is not included in the centre point lubrication system, as this requires attention over 500 miles or so… | ||
| 06-page054 | Unsuccessful modification to the clutch trunnion lubrication on a 20 HP model. | ||
| View original record | X5200 Hs/Rs. from DA. DAL/M20.8.29. X7400 X5300 With reference to Hs/as2/MJ17.8.29. the idea of leaving the clutch trunnion out of the central lubrication was that the thrust bearing was made oil… | ||
| 06-page055 | Future policy for the 20 HP transmission, focusing on the freewheel and a new clutch design. | ||
| View original record | X5300 Hs. FROM R. & DA. R/DAL/M24.8.29. C. to Hy. 20 HP+ TRANSMISSION. X5310 X5200 X9300 We should like a report on the position of the freewheel in the sideshaft on the 20 HP. gearbox, (N.schemes… | ||
| 06-page056 | 'Japan' improvements to the 20 HP clutch, including a new damping plate and washer adjustment. | ||
| View original record | COPY. X5300 BY. From OA. M.1/1.10.29. c. to Sz. Hs. 20 HP. CLUTCH. X.5300 X.3409 We send herewith M.Sch.2957, shewing some of the present 'Japan' improvements in the clutch applied to the present… | ||
| 06-page057 | Modifications to the 20/25 HP clutch, including the use of Ferodo and changes to the damper plate and starter ring attachment. | ||
| View original record | Copy. Ex. From DA. c. to SS. c. to Hs. V5300 DA.3/MS.11.29. X.5300 X.3409 20/25 HP. With reference to the suggestions to use Ferodo on the driven member of the existing 20/25 HP. clutch, we send you… | ||
| 06-page058 | Proposed modifications for the 'Japan' clutch, focusing on automatic lubrication for the spigot bearing. | ||
| View original record | BY. From DA. c.c. to Sg. c. to Hs. COPY. Y 5300 DA.4/M6.11.29. X. 5300 X. 5480 X. 872 'JAPAN' CLUTCH:LUBRICATION OF CLUTCH SPIGOT BEARING. We send herewith N. sch. 2977, shewing modifications to the… | ||
| 06-page059 | Clutch plate shuddering and potential lubrication issues in 20-HP cars. | ||
| View original record | Sèvres P/H. copy "S" "H" X5300 PsG/RJ.30/11/29. Re: 20-HP Clutches Two 20-HP cars I have finally tested to-day suffered rather badly from clutch plate shuddering. It can be temporarily overcome by… | ||
| 06-page060 | Modification to 20 HP clutches to resolve an issue with non-case-hardened pins. | ||
| View original record | X53001 W/Ps. c. Hs. c. HP. BY/Cgh20/G.23.12.29. re 20 HP. CLUTCHES. With reference to P4/RJ.30.11.29. we are of the opinion that the cause of the trouble is due to the fact that the pins carrying the… | ||
| 06-page061 | Change in specification for 20 HP clutch friction material due to rapid wear. | ||
| View original record | To ROY. From Hs/Tan. X5300 Hs/Tan.3/MJ.31.12.29. 20 HP. CLUTCH FRICTION MATERIAL -G.54043. Two of the above are on order from Messrs. Ferodo, for Expl. purposes, we believe. The specification calls… | ||
| 06-page062 | Letter to Ferodo Ltd. confirming the fitting of rivetted fabric rings to clutch plates. | ||
| View original record | X5300 Expl. Dept. Ha/Tsn,2/WJ. Dec.31st.1929. Messrs. Ferodo Ltd., Sovereign Mills, Chapel-en-le-Frith. X5500 Y3409 Dear Sirs, For the attention of MR. Field. Yesterday we wrote you asking you to fit… | ||
| 06-page063 | Clutch slipping issues on high compression 25 HP cars, attributing the problem to using springs from the 20 HP engine and outlining the torque increase that necessitates stronger springs. | ||
| View original record | To Oa. From Hs/AJL. c. to Sy. X 5300 Hs/AJL.1/M. 6.2.30. X.5300 X.5770 X.5771 CLUTCH SPRINGS ON HIGH COMPRESSION 25 HP. CAR. We are experiencing considerable trouble with clutches slipping on the… | ||
| 06-page064 | Suggesting an increase in clutch spring load and pedal stroke for the 20 HP 10,000-mile test. | ||
| View original record | BY. From Da. c. to Hs. 5300 Da.1/W.6.2.30. X5840 X5300 20 HP. for 10,000 Mile Test. CLUTCH. We wish to increase the load of the clutch springs to compensate for the increase of torque with the larger… | ||
| 06-page065 | Request to issue a standardisation sheet for the increased load on the friction clutch for the 20/25 HP chassis. | ||
| View original record | RECEIVED 9 APR 1930 Hs. x5700 BY/7/G.8.4.30. 20/25 HP. CHASSIS - CLUTCH. We wish you to issue a standardisation sheet for the increased load on the friction clutch in the method by which it is… | ||
| 06-page066 | The availability and implementation of increased clutch springs for the 20/25 HP chassis. | ||
| View original record | N S 300. BT19/C.24.4.30. RSt HJC C. Hs. 20/25 HP. CHASSIS - CLUTCHES. With reference to the suggestion that we should fit the increased springs in the clutch, we have no springs available at the… | ||
| 06-page067 | Modification to prevent clutch slipping on high compression 20/25 HP cars. | ||
| View original record | BY. From Hs/AJL. c. to EP. c. to MX. 15300 Hs/AJL.1/W.30.4.30. CLUTCH SPRINGS FOR HIGH COMPRESSION 20/25 HP. CARS. It is evident, from our own experimental experience, that the high compression 20/25… | ||
| 06-page068 | Standardisation of chassis parts by fitting 20% stiffer springs in the clutch to prevent slipping, including modifications to the clutch leverage. | ||
| View original record | A.M. 709 REVISED (10M) (DF 607 10.29) Sc. R/5243. Y5300. COMPLETED 20.5.30. STANDARDISATION of CHASSIS PARTS. Date 16.4.30. S.C. No. 5300 Drawing No. S.3030 Part List E.1484. Description of Parts: 20%… | ||
| 06-page069 | Alterations to friction clutches for 45 HP and 25 HP cars. | ||
| View original record | X5480. Hs. from R. c. Sg. By. c. Da. R1/M10.7.30. X.7772 X.7480 X.5480 45 HP & 25 HP. CARS FRICTION CLUTCHES. I have agreed to the fabric being carried on the disc, but I am not sure that we have the… | ||
| 06-page070 | Experiments investigating flywheel vibrations on a 25 HP engine. | ||
| View original record | To R. From Hs/GR. c.c. to Sc. Wor. c.c. to Ss. Z. c.c. to Da. Ey. COPY. YS309 Hs/GR.1/WJ.2.10.30. X.634. X.S300. FLYWHEEL VIBRATIONS ON 25 HP. Experiments on 12-G4. shewed that - (1) With Std.… | ||
| 06-page071 | Flywheel vibration experiments, detailing measurements of runout parallel and at right angles to the axis. | ||
| View original record | (1) Experiments on 12-G4 have shewn that flywheel vibration existed at 3100 R.P.M. (43 M.P.H. in 3rd). At 3450 R.P.M. it had entirely vanished, the engine being quite smooth up to 3610 R.P.M. when the… | ||
| 06-page072 | Engine experiments investigating crankshaft alignment, flywheel inertia, vibrations, and noise. | ||
| View original record | (2) lag 90° on No.6 crank. Experiments were also carried out on engine 1V-G8 giving an out of truth at right angles to axis = .020"/2 } At " " parallel to axis = .012"/2 } 3100 R.P.M. Arrangements are… | ||
| 06-page073 | Analysis of engine vibrations related to modifications of the clutch and flywheel assembly. | ||
| View original record | (3) For Standard clutch less flywheel/M² = 134 = decrease of 58%. Causing & for tightened flywheel to be at 2960 r.p.m. (i.e. more or less unchanged) * clutch less * * * 3970 r.p.m. The removal of the… | ||
| 06-page074 | Cover note regarding an enclosed print for a 25 HP Clutch. | ||
| View original record | BY. FROM E. Copy to HS. X5480 E1/M11.10.30. 25H.P. CLUTCH. Enclosed is print of Lec. 2831.. showing the above. E. | ||
| 06-page075 | Internal instruction to stop a 25HP flywheel and clutch job and to modify the design of the bonnet louvres. | ||
| View original record | HS. FROM R. X5300 RL/111.10.30. X.634. X.5300. X.7260. Kindly note the following:- (1) The 25HP. flywheel and clutch job should be stopped. (2) The horizontal louvres on the bonnet should be… | ||
| 06-page076 | Cover note regarding sending a document about a 25HP clutch. | ||
| View original record | X8280 BY. FROM E. C. to SG, MS E2/103.10.30. 25HP. CLUTCH. Herewith we send Lecs. 2830/1., shewing above. E. | ||
| 06-page077 | The conclusion on the cause and potential reduction of flywheel vibration for the 25HP model. | ||
| View original record | HS. FROM R. HL/M20.10.30. X 5300 Copy to SG. NOR. BY. 25HP. FLYWHEEL VIBRATION. X.634. X.5300. We have concluded that this vibration will not vary directly with the overhang, but the energy of the… | ||
| 06-page078 | Experiments conducted to investigate flywheel vibrations on a 25 HP engine. | ||
| View original record | To R. From He/GR. c. to Sg. WH. c. to E. Da. c. to RV. X5300 He/GR.1/AJ.2.10.30. x634 x5300 FLYWHEEL VIBRATIONS ON 25 HP. Continuing our report He/GR/AJ.2.10.30. on flywheel vibrations, we have made… | ||
| 06-page079 | Investigation into flywheel and crankshaft vibrations, detailing experiments to isolate their source. | ||
| View original record | (1) He/22.1/41.A.L.S.L.F.M.H.Smith. Having previously found that the flywheel vibrations could be extricated by a straight through drive from crankshaft to gearbox we tried to remove its constraining… | ||
| 06-page080 | Experiments to diagnose the source of flywheel vibrations. | ||
| View original record | (3) Re/DR.1/31.3.15. to 30.Contd. To make sure that the flywheel vibrations are not due to proximity of the master torsional period we towed the car with the valve gear missing. The engine was quite… | ||
| 06-page081 | Instruction to fit a standard flywheel and clutch to part 12-G4, while retaining the plain parallel shaft. | ||
| View original record | XX350 To EHC. From Hs/GR. Hs/GR.1/MJ.31.10.30. X.634. X.5300. Will you please fit standard flywheel and clutch to 12-G4. retaining the plain parallel shaft. Hs/H.Grylls. | ||
| 06-page082 | Test to ascertain the amount of deflection in the flywheel and crankshaft for a 25 HP engine. | ||
| View original record | To R. From Hs/Rn. c. to SS. R. c. to E. DA. c. to RV. X53.00 Hs/Sa.3/H.31.10.30. FLYWHEEL VIBRATIONS. 25 HP. X.5300. X.634. The attached test has been carried out to ascertain the amount of deflection… | ||
| 06-page083 | Test results and diagram for 20 HP flywheel deflection tests. | ||
| View original record | 20 HP FLYWHEEL DEFLECTION TESTS LOAD APPLIED TO LEVER 3 FT LONG ATTACHED TO FLYWHEEL BY SPRING CARTRIDGES THE EFFECTIVE WT. OF LEVER = 4 LB. THE CLOCKS WERE SET AT ZERO WITH THE LEVER IN POSITION, &… | ||
| 06-page084 | Potential solutions for 25 HP engine vibrations, such as using counter-weights or a one-piece crankcase and block. | ||
| View original record | To E. From Hs/Ra. C. to H. Mr. C. to L. Dr. C. to EV. x5300 Hs/Ra./H/A.H.5.11.30. x.834. x.5300. 25 HP. VIBRATIONS. The difference between a normal crankshaft and a plain bar is so great that we feel… | ||
| 06-page085 | Experiments to investigate vibrations in a 25 HP engine. | ||
| View original record | To R. From Hs/GR. c. to Sg. Sor. c. to H. DA. c. to RY. Hs/GR.1/W.5.11.30. 25 HP. VIBRATIONS. Continuing our report Hs/GR.1/W.20.10.30.. we have made the following further experiments- (1) Stiffening… | ||
| 06-page086 | Investigation into engine and flywheel vibrations by testing different crankshaft and flywheel configurations. | ||
| View original record | -2- He/Gs.1/al.5.11.30.Contd. finished at 5200 R.P.M. At 4200 R.P.M. a very considerable noise was experienced which shook the engine mountings. We therefore consider that the crankshaft is the cause… | ||
| 06-page087 | Page discussing the disturbing factor of 'long couples' in a six-cylinder crankshaft. | ||
| View original record | -3- Hs/H.1/AL.5.11.32.Contd. the disturbing factor being the 'long couples' that exist in a six cylinder crankshaft. Hs/H.Grylls. | ||
| 06-page088 | Vibration test data for a 25 HP H.L. Engine, showing crank deflection under various loads. | ||
| View original record | To R. From He/An. c. to Sg. Box. c. to R. Ds. c. to Ev. X5300 He/Sc.2/WJ.6.11.30. x634 x5300 H.L.ENGINE VIBRATIONS. 25 HP. With reference to He/Sc.3/WJ.31.10.30. Herewith figures taken with the crank… | ||
| 06-page089 | Data table of load and deflection measurements for No. 6 crank at Top Dead Centre (T.D.C.). | ||
| View original record | -2- Ba/Ph.2/AL.6.11.31.Contd. NO. 6 CRANK AT T.D.C. LOAD ON L/VLS-LB. | DEFLECTION INS. Clock A. | Clock B. | Clock C. | Clock D. Zero. | Zero. | Zero. | Zero. | Zero. 20 | .003 | .0045 | .003 | .0035… | ||
| 06-page090 | Dimensioned drawing of a control lever assembly. | ||
| View original record | 5.260 4.910 3 FT A B C D 4 No6 Bns .250" 7.080 8.000 .750 6.000 1 WLb DIMENSIONS MEASURED OFF ARRGT DRG. G.53692 Faint stamp text: PETER J. HOOD 7 14 NOV 198? ENTRY | ||
| 06-page091 | Request for remarks and criticisms regarding the reduced controls on the steering column. | ||
| View original record | MS. FROM DA. Y6480 DA4/M7.11.30. X.7430. X.5430. REDUCED CONTROLS ON STEERING COLUMN. We understand from R. that you have some criticisms to make on these controls. Unfortunately we did not see them… | ||
| 06-page092 | Further experiments conducted to investigate vibrations on a 25 HP model. | ||
| View original record | To H. From He/GR. c. to EH. Bax. c. to K. Da. c. to Sy. Nz. X5300. He/GR.1/W.2.11.30. 25 HP. VIBRATIONS. X.634. X.5300. Continuing our Report He/GR1/AF.5.11.30., we have made the following further… | ||
| 06-page093 | Analysis of vibration experiments conducted on a 25 HP engine, focusing on crankshaft and flywheel deflections. | ||
| View original record | 25 HP. VIBRATIONS. (1) With the car fitted with a bare 2" pin crankshaft, flywheel (no clutch parts) and straight through drive, we found that vibrations started at 2300 R.P.M. getting worse at 3100… | ||
| 06-page094 | Analysis of crankcase bearing cap distortion, concluding it is due to crankcase web bending. | ||
| View original record | -2- To decide whether this deflection was due to the bolts bending, we arranged to measure the angular distortion of the crankcase bearing housing by a clock at Y in the sketch. We then noted that the… | ||
| 06-page095 | Blueprint showing a flywheel and No. 6 bearing for a 25 HP engine. | ||
| View original record | 25 HP No. 6 BEARING FLYWHEEL 10° 6.85" SECTION AA REVISIONS AT Z MODIFIED AT Y TO CLEAR OLD ENGINE 21 NOV. 06 | ||
| 06-page096 | Graph showing crankcase and flywheel deflections for a 25 HP engine under varying loads. | ||
| View original record | 25 H.P. CRANKCASE AND FLYWHEEL DEFLECTIONS Left Graph: Y-Axis: 1/10000, 1/1000, ENGINE'S AT 10" RAD X-Axis: LOAD AT 39" RAD, LBS Lines: (Z) BAGS C/OF (X) RATIO 1.4 : 1.1 (Y) C'CASE BAG HOUSING Right… | ||
| 06-page097 | Design modifications to the 25HP clutch flywheel cover, including a new stiffer version and requesting deflection measurements. | ||
| View original record | BY. FROM E. X5700 E1/M/29.11.30. Copy to SG. Copy to WOR. Copy to HS. 25HP. CLUTCH FLYWHEEL. We sent herewith Lec. 2845, shewing a stiffer clutch cover for Lec. 2831. This is the lighter flywheel of… | ||
| 06-page098 | Quarterly complaints report detailing tests and issues with various fabric couplings. | ||
| View original record | Wpr. from Hs/Sa. c. EV. c. Hd. VS 05 W/312/AMS.12.30. PLT? X305 X5305 QUARTERLY COMPLAINTS. FABRIC COUPLING TESTS. We have been testing three types of fabric coupling, standard, improved standard, and… | ||
| 06-page099 | Test results for non-spigoted and spigoted fabric coupling spiders. | ||
| View original record | -2- FABRIC COUPLING TESTS. NON SPIGOTED SPIDERS. | | Reversals. | Hrs. Run. | Condition. | |---|---|---|---| | Screwed Plate Coupling. | 12,700 | 20 mins. | Collapsed. | | Screwed Plate Coupling. |… | ||
| 06-page100 | Test results for various fabric couplings, detailing run time, reversals, and remarks. | ||
| View original record | FABRIC COUPLING TESTS. FLYWHEEL R.P.M. 285. STROKE 6" FLYWHEEL WT. 48 LBS. All couplings rivetted and carried on spigotted spider. Type. Total time Reversals. No. Remarks. Hrs. Mins. Standard. 17 30.… | ||
| 06-page101 | Diagram illustrating the causes of failure in fabric coupling tests. | ||
| View original record | FABRIC COUPLING TESTS CAUSES OF FAILURE RIVETTING TOO TIGHT CAUSING RUPTURE BETWEEN PLATES. INCORRECT DISTANCE BETWEEN SPIDERS. DISTORTING SHAPE OF FABRIC IN BAD EGG ORDER AHS | ||
| 06-page102 | Manufacture, testing, and premature failure of two fabric couplings. | ||
| View original record | To BY. From Hs/Rn. c. to Sft. c. to Wor. Hs/Rn.3/MJ.13.1.31. X5305 (handwritten) FABRIC COUPLINGS. X7305. X.5305. We are very pleased to note the care which is being taken in the manufacture of the… | ||
| 06-page103 | Tests for lost movement in clutch pedal travel on a 25 HP model. | ||
| View original record | To R. From Hs/Gry. c. to Ms. R. c. to Mr. H. c. to Mr. E. c. to Mr. W. X5300 Hs/Gry.2/W.17.1.31. 1634. X5300 25 HP. Lost Movement in Clutch Pedal Travel We have carried out tests on a standard… | ||
| 06-page104 | Graph comparing the angular movement versus load for a standard and a lightened 25 HP clutch. | ||
| View original record | LOST MOVEMENT 25 HP CLUTCH ANGULAR MOVEMENT OF CLUTCH OPERATING SHAFT WITH CLUTCH SPRINGS CHOC O' BLOCK Y-AXIS: DEFLECTION IN 1/1000 AT 1.82" RAD X-AXIS: LOAD IN LBS AT 3.2" RAD STANDARD 25 HP CLUTCH… | ||
| 06-page105 | Standardisation of chassis parts for the automatic oiling of the clutch spigot from the gearbox. | ||
| View original record | A.B. 783 (100) (2-3-30) R.C. 4877. YS480 COMPLETED 16.4.31. STANDARDISATION of CHASSIS PARTS. Date 15.1.31. X No. 872. S.480. Drawing No.(s). S.2977 Part List A Scrap and replace at all costs,… | ||
| 06-page106 | Cost and implementation details for fitting a new part to a chassis. | ||
| View original record | The number of the first chassis on which the new part will be fitted......... Not decided. Date when chassis will be handed to test....................................... Cost of scrapped material, if… | ||
| 06-page107 | Flywheel vibrations, their causes, and potential engineering solutions. | ||
| View original record | E. RG. ) FROM R. HS. HY.) (At Le Canadel.) X8300 R1/M6.2.31 Copy to - SQ. WOR. HY. Copy to - SP. RHC. ENGINES GENERALLY X.634. CARS IN PARTICULAR X.7300. X.5300K P. 2. is the most important at the… | ||
| 06-page108 | Improving engine smoothness by modifying pins, webs, and using balance weights to manage vibrations. | ||
| View original record | (2) We have from time to time increased the pins and not been altogether satisfied that they have made much improvement - i.e. the added weight has done as much harm as the increased stiffness has… | ||
| 06-page109 | 12-cylinder engine design, crankshaft vibration, and potential performance improvements. | ||
| View original record | (3) Now you will see one reason why am I so very keen for a 12 cyl. engine, because as this will always run beyond its master period of 6 per rev. it can have balance weights of any extent that the… | ||
| 06-page110 | Tests conducted on a 25 HP engine to reduce flywheel vibrations by using a double bearing. | ||
| View original record | To R. From Hs/Gry. c. to SG. Nor. c. to E. H. c. to Hy. 25 HP. FLYWHEEL VIBRATIONS. We have carried out tests on the bed of a flywheel supported by a double bearing. The length of No.7 bearing was as… | ||
| 06-page111 | Photographic study of flyweight behavior under various conditions and speeds. | ||
| View original record | Standard Flyweights Double Camera 2700 3000 3400 3500 W.M. Flyweights Double Sensitive B 3100 4000 3[unclear]-- 2700 Standard Flyweights under Standard Conditions C STATIONARY 2600 2600 2800 3200-4,… | ||
| 06-page112 | Drawing of a 25 HP parallel flywheel bearing. | ||
| View original record | 25 H.P. PARALLEL FLYWHEEL BEARING SPIGOTTED TO FLYWHEEL BEARING Ex 5810 2.575 2.969 1.186 1/16 | ||
| 06-page113 | Investigation of a vibration issue in a Phantom car engine and potential tests using balance weights. | ||
| View original record | E. HS. FROM R. (At Le Canadel.) C. to SG. WOR. C. to PN. RHD. VIBRATIONS - CAR ENGINE BALANCE WEIGHTS, ETC. So far we cannot come to any satisfactory conclusion of the real nature of the vibration… | ||
| 06-page114 | Engine design related to flywheel balance, crankcase stiffness, and vibration issues. | ||
| View original record | (2) It should be understood that P. 2. crankchamber, though lighter is stiffer, and therefore as far as I know, would have a higher period than P. 1. There should be no difference in speed of flywheel… | ||
| 06-page115 | Preliminary drawing and design for a J.3. clutch and flywheel. | ||
| View original record | R. FROM DA. C. to SG. WOR. C. to HS. BY. HY. SECRET. X6300 DA2/M18.3.31. J. 3. CLUTCH & FLYWHEEL. Attached is a print of N. sch. 3257. - preliminary drawing of the clutch. We have not included either… | ||
| 06-page116 | Design review memo with suggestions for improving the 'Japan 3 Clutch' to reduce weight, cost, and complexity. | ||
| View original record | DA. BY. HS. FROM R. (At Le Canadel.) K5080 R3/M3.4.31. C. to SG. MOR. E. JAPAN 3. CLUTCH. N. Bsh. 3257. The thing I like least is the joint between hub and back plate too much weight that does not… | ||
| 06-page117 | Issues and advantages of fabric couplings on the Phantom II vehicle. | ||
| View original record | R. from HS/RM. c. Sg. c. Mr. E. c. Ds. RV. X.5305. HS/RM2/ADRO.4.31. X.5305. X.1305. FABRIC COUPLINGS - JAPAN 3. We admit we have been unfortunate with the fabric coupling on Phantom II but this has… | ||
| 06-page118 | Request to fit a stiffer crankshaft flange and flywheel back plate to the 25 HP model. | ||
| View original record | To By. From Hs/Rm. Y5300. Hs/Rm.5/KT. 23.4.31. FLYWHEEL AND CLUTCH 25 HP. We want to get a stiffer crankshaft flange and flywheel back plate on the 25 HP as soon as possible. It can do no harm, and we… | ||
| 06-page119 | Application and testing of a 20/25 flywheel tail bearing. | ||
| View original record | X6300 BY. FROM E. C. to SG+ WGR. HS. E1/113.6.31. 20/25 FLYWHEEL TAIL BEARING. We send herewith Lec. 2920. shewing the application of the tail bearing to a standard 25HP. unit. The standard flywheel… | ||
| 06-page120 | Request to manufacture parts for a flexible coupling to be fitted to the 25 HP clutch to overcome gear rattles. | ||
| View original record | 15300. To RHC. From Ha/Grys. Ha/Grys.1/WJ.17.6.31. To overcome gear rattles we wish to fit a flexible coupling in the 25 HP. clutch. Will you please therefore make the necessary parts to Hs.374/5 for… | ||
| 06-page121 | Blueprint of a propeller coupling with main circular view and cross-section. | ||
| View original record | H 575 SECTION A.B.C PROPELLER COUPLING ROCK END COUPLING S/26 8 BOLTS ALTERED FROM 1/4" DIA TO 5/16 DIA IN POSITION S/23 4 BOLTS 5/16" DIA 4.600 P.C. DIA 9.600 P.C. DIA 11.500 DIA 4.600 DIA 1.750 .250… | ||
| 06-page122 | Drilling an experimental oil hole for the 20/25 flywheel tail bearing. | ||
| View original record | X5300 BY. FROM E. 21/PS/S.S.31. C. to HS. 20/25 FLYWHEEL TAIL BEARING. In reply to your memo. BY/CEH1/G17681.. we have drilled a hole through the centre of the 1st. motion shaft opposite the spigot… | ||
| 06-page123 | The new N.W. scheme for a flywheel tail bearing and fitting it to a 25 HP car. | ||
| View original record | 85300. To H.C. From Hs/Rm. Hs/Rm. S/RT. 22.6.31. FLYWHEEL TAIL BEARING. The Drawing Office say that they completed the details of the N.W. scheme of tail bearing last week. This scheme fits existing… | ||
| 06-page124 | The preparation of material for a 20/25 HP flywheel tail bearing. | ||
| View original record | Y8300 To RHC. From Ha/Rm. Ha/Rm.2/MJ.26.6.31. 20/25 HP. FLYWHEEL TAIL BEARING. We understand that the D.O. issued this W.W. scheme L.& C.2920 under a different scheme number, owing to the fact that… | ||
| 06-page125 | Issues with a lightened flywheel and the decision to use a standard flywheel with a stiffer flange. | ||
| View original record | To Sg. From Hs. Hs.4/MJ.30.6.31. Replying to Sg11/E29.6.31. Although we ran a lightened flywheel satisfactorily on 18-G4. for 10,000 miles, subsequent tests on other cars shewed that with this… | ||
| 06-page126 | Cancellation of a standardisation sheet for a lightened flywheel on the 25 HP model due to gearbox rattles. | ||
| View original record | 85300. To Sg. From Hs. c. to R. c. to Wor. C. c. to Rg. Da. c. to By. EP. c. to E. PM. Hs.2/MJ.1.7.31. STANDARDISATION SHEET X.872/5300. LIGHTENED FLYWHEEL FOR 25 HP. The above Standardisation Sheet… | ||
| 06-page127 | Preparation and allocation of flywheel tail bearing parts for specific cars. | ||
| View original record | 15200. To REC. From Ha/Rm. Ha/Rm.6/MJ.7.7.31. FLYWHEEL TAIL BEARING LEC.2920. You are preparing a set of parts for a Trials Car. We have arranged to fit them to 19-G4. instead. R. rang up recently to… | ||
| 06-page128 | Standard friction ring from a 20/25 clutch, made of Ferodo with interwoven brass wire, and a proposed modification. | ||
| View original record | To Bm. from E. X 5300. E.3/HP.12.7.32. C.R. Mr. Hives. re 20/25 Clutch. We are sending you under separate cover one of the standard rings of friction material used in the 20/25 clutch. You will… | ||
| 06-page129 | Flywheel vibration issues after an attempted fix involving an extra bearing and stiffer flange. | ||
| View original record | 15300 HS. FROM R. C. to SG. WOR. C. to E. BY. R2/M21.7.31. 'CHINA' - FLYWHEEL VIBRATION. X. 534 X. 5300 In stiffening this with extra bearing and stiffer flange the result is much worse, and I think:… | ||
| 06-page130 | Tests on flywheel vibrations for a 25 HP engine. | ||
| View original record | X5300. 30.9.31 I.634. X.5300. 25 HP. FLYWHEEL VIBRATIONS. We have carried out further tests on the tail bearing to LeC.2920. The first test on 19-GIV in conjunction with a stiffened flywheel to GL.475… | ||
| 06-page131 | Request for a design for fitting a thin flange flywheel to a new 25 HP unit. | ||
| View original record | To E. From Ha/Gry. J.5360. Ha/Gry.6/MJ.2.10.31. 25 HP. THIN FLANGE FLYWHEEL. We are sending you a sketch of the thin flywheel we have tried and which was fitted to 12-04 when at T.T. the other day. As… | ||
| 06-page132 | Tests on a 25 HP engine for reducing roughness by modifying the flywheel and balance weights. | ||
| View original record | To R. From Ha/Gry. c. to Sg. Wor. c. to S. Da. c. to By. X5309 Ha/Gry.6/WJ.5.10.31. 25 HP. ENGINE ROUGHNESS. X.634. X.5300. X.5010. Our tests on the thin flange flywheel have shown that its effect is… | ||
| 06-page133 | Follow-up report on flywheel vibration and the effectiveness of different balance weight schemes for a 25 HP engine. | ||
| View original record | COPY. X5300 To R. from He/Gry. c. to Sg. Wor. c. to E. Da. c. to By. He/Gry.5/WT.19.10.31. X.5300 X.834 X.5010. 25 HP. FLYWHEEL VIBRATION & BALANCE WEIGHTS Continuing our report He/Gry.6/WT.5.10.31.… | ||
| 06-page134 | Request to manufacture a second flywheel with a thinner back plate for chassis No.18.G.IV. | ||
| View original record | X5300. To REiC. from Ha/Rn. Ha/Rn.8/KT.19.10.31. W.W. THIN FLANGE FLYWHEEL. Will you please put in hand a second flywheel having a thinner back plate to WW. sch. Lec.2959. This is urgently required… | ||
| 06-page135 | Design of a thin web flywheel for the 'CHINA' chassis. | ||
| View original record | COPY. X5300 E2/MS.10.31. X5300 BY. FROM E. O. to SG. WOR. HS. 'CHINA' CHASSIS. Please receive herewith design of thin web flywheel - Lec. 2959. E. | ||
| 06-page136 | Requesting modifications to the 25 HP low inertia slipper wheel to prevent sludge collecting. | ||
| View original record | X5300. To R.C. from Hs/Gry. Hs/Gry.3/KT.24.10.31. 25 HP. LOW INERTIA SLIPPER WHEEL. Will you please carry out the modifications shown on the accompanying prints to the slipper wheel on C.7 unit.… | ||
| 06-page137 | Blueprint detailing the arrangement, dimensions, and modifications for a driven disc. | ||
| View original record | H.S. 456 MODIFICATION TO E 52206 1.300 1.225 1.404 DIA CUTTER +/- .001 MODIFICATION TO E 52231 1.250 MATERIAL C.N.S. 8 HOLES EQUALLY SPACED DRILL 26/64 DIA REAM 27/64 - 9/16 DIA SP FACED (F.) TAPPED… | ||
| 06-page138 | Request to test a heavy driven clutch member with the synchromesh box and modify an existing flywheel. | ||
| View original record | To RHC. from Hs/Gry. x5300. Hs/Gry.6/KT.28.10.31. W.W. have asked us to test a heavy driven clutch member with the synchromesh box. Will you please make us one to the accompanying sketches and modify… | ||
| 06-page139 | Request to make three sets of damping springs with varying free lengths for a slipper wheel. | ||
| View original record | 85300. To RHE/H.Smith. From Ha/Gry. Ha/Gry.2/MJ.29.10.31. Will you please make a set of damping springs to E.56208 but of free length .725 for use on the slipper wheel for 18-04. Two other sets of… | ||
| 06-page140 | Modification request for a Slipper Wheel to prevent sludge collecting in the damper. | ||
| View original record | To RHC/H.Smith. From Ha/Gry. X5300 Ha/Gry.y/MJ.29.10.31. 18-G4. Slipper Wheel. Will you please modify this to Ha/Gry.y/KT.24.10.31. as done on C.7 unit to prevent sludge collecting in the damper.… | ||
| 06-page141 | Reminder to measure the pedal pressure on the latest 20/25 clutch to apply the information to J. 3. | ||
| View original record | HS. FROM DA. X5480. DA2/17.11.31. X5460. This is to remind you that you are going to measure the pedal pressure on the latest 20/25, clutch and send us full particulars as to the leverage, spring… | ||
| 06-page142 | Confirming the dispatch of scheme 3362, showing the clutch arrangement for J. 3. | ||
| View original record | X5480. BY. FROM DA. DA1/01.11.31. (X548) C. to SG. HS. J. 3. Clutch. Herewith we send N scheme 3362., shewing the arrangement of the clutch for J. 3. We shall be sending you shortly some further… | ||
| 06-page143 | Pedal and spring pressure for the 25 HP clutch. | ||
| View original record | 15480. To Da. from Hs/Rm. Hs/Rm.2/ADM6.11.31. With reference to your enquiry re pedal pressure required on the existing 25 HP. clutch and the spring pressure and pedal pressure at present being used.… | ||
| 06-page144 | Sending Scheme 3363 for a revised clutch pit, clutch operating gear, and front brake differential. | ||
| View original record | BY FROM DA C. to SG. HS. X5480. DA/107.11.31. X5480 J. S. CLUTCH PIT & CLUTCH OPERATING GEAR, ETC. Herewith we send M. Scheme 3363. shewing the clutch pit, the revised clutch operating gear which… | ||
| 06-page145 | Difficulties in getting the clutch to stop for gear engagement on various models and the need for a clutch stop or brake. | ||
| View original record | To R. From He/Hm. c. SE. c. ROT. R. c. G. RV. He/Hm.1/AM.6.11.31. X5480. X.7480. X.5480. CLUTCH STOPS. During the test on Japan III synchro mesh gear box having a driven plate fitted with a similar… | ||
| 06-page146 | Test results for 25 HP clutch springs, including load, deflection, and permanent set measurements. | ||
| View original record | X5480. 25. H.P. CLUTCH SPRINGS. PLEASE FILE G54132 CLUTCH SPRING TESTS. SPRING RATING. LOAD LB | DEFLECTION-INS. | 1ST TEST | 2ND TEST 4 | 0 | 0 25 | .156 | .143 50 | .341 | .334 100 | .699 | .670 125… | ||
| 06-page147 | Letter discussing concerns about clutch pedal pressure, gears, and engine rattles on a 25 HP vehicle. | ||
| View original record | G.W.Hancock from Hs/Rm. Hotel de France, Chateauroux, Indre, France. x5480 Hs/Rm.1/AM 8.11.31. 25 HP. CLUTCH. x5480 We have been very concerned about the increase in pedal pressure on 18-GIV with the… | ||
| 06-page148 | Follow-up letter regarding brake wear, propeller clearance, and engine detonation tests. | ||
| View original record | Hs/Rm.1/AM.8.11.31 contd -2- We should like you to keep an eye on the brakes to see if the drums start to score as on 25-EX. Our own opinion is that they will wear alright until the scoring starts and… | ||
| 06-page149 | Technical memo discussing and comparing clutch spring loads, leverages, and pedal pressures for the 25 HP and 40/50 models. | ||
| View original record | To Ds. from Hs/Rm. X5480 Hs/Rm.1/AD21.11.31. With reference to your enquiry re the clutch spring loads and leverages Da2/M7.11.31, we attach a sketch showing the existing leverages. We have very… | ||
| 06-page150 | Request for figures from three specific clutch load tests for a 25 HP model. | ||
| View original record | Hs/Lid. from Hs/Rm. 85480 Hs/Rm.4/AD21.11.31. CLUTCH LOAD TESTS 25 HP. "We should like the following figures :- (1) Standard clutch spring G.54132. Load required just to start bringing the presser… | ||
| 06-page151 | The experimental application of features to a 20/25 HP clutch. | ||
| View original record | BY. FROM DA. X5480 C. to SG. MS. DAI/DS.11.31. X5480 25 HP. CLUTCH. Herewith we send d N. sch. 3366., which shews the application experimentally to the present 20/25 HP. clutch of some of the features… | ||
| 06-page152 | Recommendation to cease using automatic clutch spigot lubrication due to issues with oil flooding and clutch slip. | ||
| View original record | By. from Hs/Rm. C.c. to. Y5480 Hs/Rp.2/AD20.11.31. AUTOMATIC CLUTCH SPIGOT LUBRICATION. Y873 We recommend that we do not use the automatic clutch spigot lubrication until we have made it work… | ||
| 06-page153 | Alterations to prints for clutch components to improve pedal operation. | ||
| View original record | X5480. RHC. from Hs/Rm. Hs/Rm.4/AD.12.12.31. We send you herewith prints G.51999, G.53458, F.53518, G.54086, G.51605, G.53450. We have altered the dimensions of these prints with a view to obtaining… | ||
| 06-page154 | Instruction to abandon the automatic clutch spigot lubrication system for the 20/25 HP and 40/50 HP models. | ||
| View original record | Copy BY/TVDA C. MX. C. EP. C. Hs. Y5480. BY.10/G.4.12.31. X5480 X7480. 20/25 HP. and 40/50 HP. - AUTOMATIC CLUTCH SPIGOT LUBRICATION. ------------------------------------------------------ The… | ||
| 06-page155 | Issues with the 25 HP clutch operating mechanism, required modifications, and affected drawing numbers. | ||
| View original record | RV. from Hs/Rm. X5480. Hs/Rm.4/AD21.12.31. CLUTCH OPERATING MECHANISM - 25 HP. We have recently been in trouble on our 10,000 mile cars with the clutch. The position is that the 25 HP. leverage is… | ||
| 06-page156 | Standardisation of stronger clutch springs and modified leverages to suit, in order to overcome slipping. | ||
| View original record | 100 12M (2/32) (S181) X5480 COMPLETED 2. 3. 32. STANDARDISATION of CHASSIS PARTS. Date 5.1.32. Description of Parts. (CLUTCH SPRINGS, STRONGER) (MODIFIED LEVERAGES TO SUIT). Origin. To overcome… | ||
| 06-page157 | Fitting of a new part to a chassis, including test date and costs. | ||
| View original record | STANDARDISATION OF YEARLY PARTS NEW CHASSIS DETAILS The number of the first chassis on which the new part will be fitted................. 181 in 'T'. Date when chassis will be handed to test 12.3.32.… | ||
| 06-page158 | Issues with the 25 HP clutch and proposed modifications to address slipping. | ||
| View original record | Y 5480 To N. From Hs/Rm. c.c. to Da. c.c. to Hy. Hs/Rm.1/MJ.5.1.32. 25 HP. CLUTCH. With the increased size of the 25 HP. engine the clutch has always been on the point of slipping. The original… | ||
| 06-page159 | Diagram comparing standard and modified leverage for a 25 HP clutch operation. | ||
| View original record | 25 H.P. CLUTCH OPERATION MODIFIED LEVERAGE CLUTCH FINGERS AND LEVERS 'A' AND 'B' ALSO STIFFENED UP IN SECTION 'A' 2.3" 'B' 3.75" 1.250 DIA OF TRUNNION SHAFT - ℄ TILTED BACK 1.250 STANDARD LEVERAGE… | ||
| 06-page160 | Technical analysis of 40/50 clutch springs in relation to 25 HP clutch slipping. | ||
| View original record | Copy for Files. Y5480 6. 1. 32. 40/50 CLUTCH SPRINGS. POSITION RELATIVE TO 25 HP CLUTCH SLIPPING. Drawing length of Clutch Spring. 4.100 " Rating " 142 lbs. " Load in position. 220 lbs. Actual free… | ||
| 06-page161 | Standardisation report for a chemically bonded Ferodo clutch lining with a scarf joint. | ||
| View original record | No 786 (cont) (10 sets) (10/30) wb. 5/7958. Y.S305. COMPLETED. 13. 2. 32. STANDARDISATION of CHASSIS PARTS. Date 6. 1. 32 719 X No. S305. Drawing No. RAD.II Part List Scarf Joint. Description of… | ||
| 06-page162 | Form detailing scheduling and cost information for fitting a new part to a chassis. | ||
| View original record | The number of the first chassis on which the new part will be fitted......... As soon as material is available. Date when chassis will be handed to test......... ----- Cost of scrapped material, if… | ||
| 06-page163 | Standardisation of chassis parts including Flywheel G.54938, Back Plate G.54939, Oil Catcher G.54940 and Ball Bearing Housing G.54941. | ||
| View original record | No. 723 (10M) (2129) (P.1044) SM 5/7029. X5300. COMPLETED 7. 3. 32. STANDARDISATION of CHASSIS PARTS. Date 7.1.32. LeC. X5300 X No. 2959. Drawing L.O.P. No. G.54793. Part List Description of Parts:… | ||
| 06-page164 | Record detailing the fitting of a new part to a chassis, including test date and associated costs. | ||
| View original record | EXPERIMENTAL CHASSIS PARTS The number of the first chassis on which the new part will be fitted.................. 161 in 'T' Date when chassis will be handed to test.... 12. 3. 32. Cost of scrapped… | ||
| 06-page165 | Tests on a 25 HP clutch trunnion operating lever for deflection and bending. | ||
| View original record | COPY. Y 5480. To E. From Ha/Rm. c. to Du. Ha/Rm.1/AD6.4.32. Tests were carried out on the clutch trunnion operating lever of the 25 HP. to see if the operating pins were deflecting unduly. It will be… | ||
| 06-page166 | Blueprint detailing a deflection test on a 20 HP gearbox main bearing. | ||
| View original record | 20 H.P. GEARBOX MAIN BEARING DEFLECTION TEST LOAD APPLIED VIA DYNAMOMETER P X F 23-1-11 | ||
| 06-page167 | Graph showing the results of deflection tests on a 20 HP clutch operating lever. | ||
| View original record | 20 H.P. CLUTCH OPERATING LEVER. G.53843. DEFLECTION TESTS. LOAD ON TRUNNION - LB. DEFLECTION - INS. P1 & X1. DEFLECTION - INS. P2 & X2. X2 P2 X1 P1 0.030 0.020 0.010 200 400 600 800 1000 1200 | ||
| 06-page168 | Trial for a 25HP torsionally flexible joint in the transmission, comparing two design suggestions. | ||
| View original record | 18306 BY. FROM DA. C. to SG. WOR. HS. E. DA1/M7.6.32. 25HP. TORSIONALLY FLEXIBLE JOINT IN TRANSMISSION. Herewith we send N. sch. 3483, shewing the torsion-ally flexible joint inside the clutch, which… | ||
| 06-page169 | Request to manufacture two sets of 25 HP clutch springs for a customer's car. | ||
| View original record | XS300. To RIC. From Ha/Gry. Ha/Gry.8/KT.10.6.32. 25 HP. CLUTCH SPRINGS. Will you please make 2 sets of springs to the accompanying Hs.644. 1 set will be sent to N. for fitting to a customer's car.… | ||
| 06-page170 | Specification sheet for an 8-off 25 HP clutch spring. | ||
| View original record | H3 644 DIA OF WIRE .176 INSIDE DIA OF HOLE 1.675 +.05 SPRING TO HAVE 9 WORKING COILS WITH ONE OPEN ON GROUND EACH END LOAD WHEN COMPRESSED TO 2.200 TO BE 165 LBS FREE LENGTH 2.840 [APPROX] RATING 280… | ||
| 06-page171 | Clutch friction coefficients and suggesting tests to determine where losses occur. | ||
| View original record | HS. FROM DA. V537 DA1/M21.6.32. CLUTCHES. X.5300. X.7300. We have discussed with R. the question of the co-efficient of friction shewn by our clutches, and he suggests that we should carry out a test… | ||
| 06-page172 | Clutch pressure issues, design modifications, and material choices for clutches. | ||
| View original record | HS. FROM R. X5300 RL/MS.7.32. C. to SG. WOR. BY. E. DA. re. CLUTCHES. X.5300 X.7300 For my own driving, as a weak man, the pressure on 16-G-4 is as much as I can maintain in driving, and therefore… | ||
| 06-page173 | Clutch stiffness due to synchromesh gearboxes, American clutch designs, and a proposed clutch pedal modification. | ||
| View original record | X5300. No.1/ADS.7.32. X7300. R. from Hs. C. Sg. Hcr. C. E. De. C. Ev. CLUTCHES. With reference to the attached report, it is positive that the introduction of the synchromesh box is going to give the… | ||
| 06-page174 | Information about clutch pedal pressures and the reasons for changes across different series and models. | ||
| View original record | A. From BM/CFY. C. to CG. Dor. C. to T. DA. C. to V. He/CP/.11/TLS.8.7.32. CLUTCHES P.II AND 25HP. We are sending you this information about clutches as we consider that the pedal pressure on our cars… | ||
| 06-page175 | Technical analysis of clutch separation, torque, coefficient of friction, and performance issues. | ||
| View original record | -2- HS/SRH.11/Ms.2.7.32.Cont'd We have measured the actual clutch separation on a L.H. chassis and find it to be .061 against a drawing figure of .087. The losses were measured to be as follows :- *… | ||
| 06-page176 | Clutch slip after synchromesh gear changes, comparing solutions from other manufacturers. | ||
| View original record | -3- HS/Gry.11/M.B.7.32.Chat'd. clutch slip after a synchromesh change of gear that we consider important. We think it desirable to reduce both the unit pressure on a Ferodo and the effort required to… | ||
| 06-page177 | Proposal to increase clutch spring force for the 25HP and Phantom II models. | ||
| View original record | X5300. Ds. From Hs/Gry. Hs/Gry.C/Ad.7.7.38. CLUTCH SPRINGS. X)300. As requested on the telephone the clutch spring force on the 25HP is 143 lbs which we propose increasing to 165 lbs. The P.II spring… | ||
| 06-page178 | Instructions for fitting an experimental 25HP type driven plate to the J.III clutch, omitting cushioning springs. | ||
| View original record | RIC. From He/Gry. X5300 He/Gry.3/MA.14.7.32. J.III CLUTCH. We send you herewith a sketch of a 25HP type driven plate in the J.III Clutch. The Ferodo is however still on the driven plate but this plate… | ||
| 06-page179 | Blueprint detailing the design and specifications for a driven plate in a clutch assembly. | ||
| View original record | HS 678 8 SLOTS (FLOPPY DRIVES) ALTERNATE SECTIONS JOBS (SWS) & (SSR) = .025 7.66 RAD CTR .187 DIA .063 .030 SPRING IN DRIVEN PLATE AS IN J.B. .062 TEE ROD 8 OFF L&R SPLINES AS IN G 55289 DRIVEN PLATE… | ||
| 06-page180 | Ordering and testing a Borg & Beck clutch fitted to a 25HP model. | ||
| View original record | BY. FROM DA. X5200 DA1/M14.7.32. C. to SG. WCR. HS. E. BORG & BECK CLUTCH FITTED TO 25 HP. X.2200 X.5300 Herewith we send N. sch. 3504 shewing an adaption of the Borg & Beck clutch to the 25HP. Would… | ||
| 06-page181 | Request to expedite building 25 HP clutch springs (Hs.644) into cartridges for testing and a customer's car. | ||
| View original record | (5300) To RHC. From Ha/Gry. Ha/Gry.11/MJ.17.3.32. 25 HP. CLUTCH SPRINGS Hs.644. We understand one set of these are not ready. Will you please have them built up into cartridges and handed to Ha/Lid.… | ||
| 06-page182 | Proposal for a Borg & Beck clutch on a 25HP model. | ||
| View original record | BY. FROM DA. X5300 DA1/M/22.7.32. C. to SQ. WOR. HS. E. BORG & BECK CLUTCH ON 25HP. X.2200 X.5300 We have heard from Borg & Beck that they do not care for our proposal to shorten the central hub in… | ||
| 06-page183 | Borg & Beck clutch experiment on a 25HP model, including suggested modifications and schematics. | ||
| View original record | V5300 BY.) FROM DA. HS.) DA1/V23. 8.32. C. to SG. WOR. E. X.2200. X.5300 BORG & BECK CLUTCH EXPERIMENT ON 25HP. We hope this experiment is being pushed on, as information obtained from it would be of… | ||
| 06-page184 | Schemes for revised leveranges for the 20/25 Clutch. | ||
| View original record | X5300. To Rm. from E. E.4/HP.25.8.32. re 20/25 Clutch. Da. has some schemes ready for revised leveranges not yet approved by H. but he has promised to send them along. E. [Stamp text: RECEIVED 26 AUG… | ||
| 06-page185 | Faults and modifications for the Peregrine & J.S. Clutch mechanism. | ||
| View original record | E. FROM R. RB/Mb.9.32. X5300 X402 C. to SG. WOR. HS. BY. DA. PEREGRINE & J.S. CLUTCH. Thank you for your memo re. the errors in the clutch mechanism. This is an old fault which we have run into… | ||
| 06-page186 | Confirmation of a phone message regarding the redesign and simplification of the J.J. & Peregrine clutch. | ||
| View original record | X8300 BY. FROM R. CONFIRMATION OF 'PHONE MESSAGE. R1/M16.9.32. C. to SQ. FOR. HS. E. DA. XC.027 re. J.J. & PEREGRINE. CLUTCH. WE ARE SENDING DESIGNS OF MUCH BETTER AND SIMPLER CLUTCH. BUT IT WILL… | ||
| 06-page187 | Slipping clutches on 25 HP models due to automatic lubrication and the solution to disable it. | ||
| View original record | X5370 Hd. from Hs/GWH. Hs/GWH.6/KT. 23.9.32. Re. Slipping Clutches on 25 HP. You will remember that we had a lot of trouble with automatic lubrication to the clutch spigot, which caused the clutches… | ||
| 06-page188 | Issues and design corrections for single and multi-plate clutches. | ||
| View original record | HS. FROM R. xƒ300 R2/11.10.32. C. to SS. WCR. BY. E. CLUTCHES. X 5300 Xƒ300 X 4027 We are all in agreement that it is necessary with single plate clutches to carry the asbestos on the driven plate. It… | ||
| 06-page189 | Testing of three modified clutches and a patent application for an improved actuating mechanism. | ||
| View original record | HS. FROM R. C. to SG. WOR. BY. E. DA. X.380 HS/M4.10.32. X.728 X.7300 X.5300 CLUTCHES. We understand that you have now the three modified clutches to test - i.e. one for each of P.2., 25 HP, and 18 HP… | ||
| 06-page190 | Suggested modification to the 25HP clutch to align it with improvements made for other models. | ||
| View original record | BY. F&M DA. C. to ST. W. JS. E. X.5300 DA/MS.18.10.32. 25HP. CLUTCH. We send herewith M.Sch.3564. shewing the suggested modification to the 25HP. clutch to bring it into line with the improvements… | ||
| 06-page191 | Three methods for achieving satisfactory engagement in single-plate clutches. | ||
| View original record | HS. FROM R. R2/12.12.32. C. to SG. WOR. BY. DA. CLUTCHES. In the case of single plate clutches (which are the almost universal type) there seem to be 3 ways of getting a satisfactory engagement: (1) A… | ||