Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 49\2\        Box Selection

IdentifierEntry
Scan001 Inter-office correspondence regarding issues with ball and thrust bearing designs on bevel pinions.
View original record H.R.A. 25 m. 12-20-20 40842 X4150 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. CC Mr. Belnap Mr. Nadin Cy9 - G 4821 August 4, 1921 Dear Hives: Re: Ball Bearings Replying…

Scan002 Design of bearings and housings, addressing issues with threaded caps and proposing alternative manufacturing schemes.
View original record Oy9 - G 4821 Sheet #2. without threads because the threads may work loose under these shocks. I must add that we do not find the bronze cap G-483 working loose on test, and this has more cause to do…

Scan003 The failure of a rear axle pinion thrust bearing and a request for the Works Committee to consider action.
View original record c. to Wer. c. to Hs. X4150 AUG 10 1921 EP/Thn6/H9.8.21. Re Failure of Rear Axle Pinion Thrust Bearing With reference to the above, see page 3 of Minutes of Works Committee Meeting held July 13th. last…

Scan004 Inquiry regarding the readiness of a 14 tooth axle for a I LW Trials Landaulette.
View original record X4299 BkI3/GC.I082I. August 10th.1921. X4299 X3922 S to W. Hs. I4/I5 Tooth Axles. Will you kindly advise us if the I4 tooth axle for I LW Trials Landaulette is ready yet. Bk/ RECEIVED

Scan005 Confirming a 14-tooth axle for a Trials Landaulet is ready for fitting in Derby.
View original record W/S. To Bk. from Hs. X4299 Hs2/LG12.8.21. X4299 X3922 14-tooth Axle for Trials Landaulet. This axle is ready and can be fitted to the Car any time it can be sent to Derby. Hs. R. R. 238a (100 Y) (S.…

Scan006 Typed memo detailing opinions on the use of brazing for brake brackets on the rear axle.
View original record X4063 CC Mr. Belnap Mr. Nadin Oy10 - G 19821 August 19, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. Royce & Works Committee. Dear Sir:- Re: Brake…

Scan007 Cover memo requesting review and sign-off for a standardisation sheet on Rear Axle Gears 14 X 52.
View original record To R. from Hs. c. to C.J. and B.J. X4299 Hs/LC24. 8.21. REAR AXLE GEARS 14 X 52. X4299 Please find attached copy of standardisation sheet for the above. Will you kindly remark upon, sign and return at…

Scan008 Failure of a 4-EX axle and proposing modifications to the brake shaft positions.
View original record Oy10 - G 19821 Sheet #2. Mr. Southern. "Consider brazing should be continued." Undoubtedly the circumstances under which 4-EX axle failed - of sliding over frozen drifts and mud - were by no means…

Scan009 Instruction note regarding the mileage of a back axle on a demonstration car.
View original record R.R. 28. (2M) S.D. (208. 15-3-17) M.P. 176550. X. 4150 H & S ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Col Harker Order No. Customer's No. Re Back Axle - This back axle has done 4,066 miles on Dem car.…

Scan010 The delay in sending drawings and standardisation sheets for a 14/52 back axle ratio to Springfield.
View original record [Handwritten: X4299] [Stamped: F.R.] Worl/FG25.8.21. To CJ from Wor. Your CJ14/D24.8.21. [Stamp: J.S. RECEIVED 26 AUG 21] In reply to your question reading:- [Handwritten: X4299] "Mr. Belnap of…

Scan011 Requesting the dispatch of drawings and standardisation sheets for a 14/52 back axle ratio to the Springfield plant.
View original record To Wor. from CJ. CJ14/D24.8.21. Mr. Belnap of Springfield says that they have been advised that England proposes to use the 14/52 ratio for back axles for all cars with heavy bodies, but Springfield…

Scan012 Confirmation of a telegram telephoned to Chichester regarding a Goshawk two gear box.
View original record R.R. 235a (100 T) (S.H. 798 10-12-20) G. 2948 X4299 CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. 31st. August. 1921. ROYCAR DERBY. X4219 X4299 ROWLEDGE IT WILL BE QUITE CONVENIENT FOR YOU TO…

Scan013 Internal memorandum regarding a standardisation sheet for Rear Axle Gears, 14 X 52.
View original record To R. from Hs. c. to CJ. and BJ. c. to Wor. c. to Rg. c. to Da. c. to BY. c. to EP. c. to PN. c. to EWT. for R.R.Inc. X4299 Hs/LG31.8.21. X.3457 X4299 REAR AXLE GEARS. 14 X 52. Please find attached…

Scan014 Standardisation of chassis parts, specifically rear axle gears (14 x 52) for cars with heavy bodies.
View original record R R. 755 (5 H) (S F. 621. 3-5-19) G. 2361. COMPLETED 31.8.21. STANDARDISATION of CHASSIS PARTS. Description of Parts. REAR AXLE GEARS 14 X 52. Drawing No. X 3457 4299. Part List. Date 7.7.21 Origin.…

Scan015 Potential cause for a 'clapping' sound from the back axle, suggesting side play in controlling springs or rollers.
View original record X.3457. Extract from R2/G31.8.21. 31.8.21. X.2565. x.2628. X.3457. Regarding the expression of "clapping" of the back axle, I do not know to what this refers except the possibility that the…

Scan016 Telegram received by telephone with an urgent request to wire about a despatched axle.
View original record R.R. 144A (100B.) SE 867. 9.7.18 MP 19387L. ROLLS-ROYCE, LIMITED. X4299. TELEGRAM RECEIVED BY TELEPHONE. INVOICE DEPT. SEP 2 1921. Time Received: 1.27. Date: 2.9.21. To: Royce Derby. By: GH. from:…

Scan017 From Hives to Northey regarding the dispatch of a fourteen-tooth axle to London.
View original record X4299 PN. NORTHEY - FOURTEEN TOOTH AXLE WILL LEAVE HERE ON FIRST CHASSIS DELIVERED TO LONDON ANTICIPATE MONDAY. HIVES. 2.9.21. (upside down text at bottom) H.B. 2358 (100) (S.H. 783 10-12-20) C. 2645

Scan018 Post Office Telegraph form with a handwritten urgent message.
View original record POST OFFICE TELEGRAPHS CONFIRMATION (stamped) Handwritten Reference: K2454 X4299 This Form must accompany any Inquiry respecting this Telegram. [BOXES] Recd from: Taylor No. of Telegram: 38 Office…

Scan019 List of parts and details for the Goshawk I (1st Experiment) Rear Axle.
View original record To. Mr. Coverley. c. EFC. c. Ms. c. Da. X3493 BY/TWD./GMK 5. /9. /21. [STAMP: RECEIVED SEP 7 1921] X.3493. "GOSHAWK I". (1st.EXPERIMENT). REAR AXLE. SECTION - 6120. "N" SCHEME - 958. Loc. 1042. In…

Scan020 Continuation sheet of a parts list for a rear axle assembly, with reference to the 'Goshawk II' project.
View original record (Cont'd) -2- BY/TWD.1/GMK 5. /9. /21. N.89. G.7646 - Thrust Washer for Bevel Pinion. 1 off per set. N.89. G.7649 - Securing Plate for Housing Bolts. 1 " " " N.82. G.7659 - Rear Axle Box. (Rear Side).…

Scan021 Continuation of a parts list for a vehicle's axle and differential assembly.
View original record -3- BY/TWDL/GMK 5./9./21. (Cont'd) G.7650 - Washer Filler Cap. G.7367/74-Packing Washer. (Axle Shaft). G.7375 - Bearing Bush. (Axle Shaft). G.7376 - Bearing Bush. (Differential Pinions). G.7380 -…

Scan022 Continued list of part numbers for various nuts and bolts for the axle tube, gear box, and tie rod.
View original record -4- BY/TWDL/GMK 5./9./21. -------------------- (Cont'd). ----------- G.7943 - Nut. (Axle Tube and Gear Box). G.8029 - Lock Nut. (Right Hand). (Tie Rod). G.8030 - Lock Nut. (Left Hand). (Tie Rod).…

Scan023 Sending a rear axle with a 14-tooth pinion to London for a Landaulet Trials Car.
View original record X2457 X4299 BP. from Hs. c. to Test Dept. Hsl/LGS.9.21. It has been arranged that we send a Rear Axle fitted with 14-tooth pinion to London to be fitted to the Landaulet Trials Car. We have handed…

Scan024 Telegram received by telephone regarding the urgent dispatch of an axle.
View original record ROLLS-ROYCE, LIMITED. TELEGRAM RECEIVED BY TELEPHONE. X.3457 Time Received: 2 14 By: Glt Date: [STAMP: RECEIVED 9 IX '21] To: Roycean Derby from: Regent St 1 30 Hives urgently wanting axle for LW have…

Scan025 Modification scheme for the Gleason bevel pinion thrust bearing taken on the journal bearing.
View original record To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EP. c. to Wor. X4150 Hs2/LG17.9.21. X.4150 - THRUST FOR GLEASON BEVEL PINION TAKEN ON JOURNAL BEARING. This scheme is to provide a means of…

Scan026 Testing various axle journal and thrust bearing modifications and recommendations for future designs.
View original record Contd:- -2- has run 1000 miles. We have also fitted it to two other axles which, so far, have not done much running. We have used the existing journal bearing in making this alteration. This journal…

Scan027 Continued memo discussing wear on thrust washers and the challenges of axle lubrication.
View original record Contd. -3- Hs2/LG17.9.21. ----------- of the thrust washers taken from an axle fitted with the single thrust in which there has been very considerable wear on the face of the thrust washer which takes…

Scan028 Modification to the rear axle and the attached standardisation sheet.
View original record To Mr. from Mr. c. to DS. c. to DP. c. to RP. c. to FM. c. to HWI. for R.R.Inc. X.4150 Hg/LC19.9.21. X.4150 - MODIFICATION TO REAR AXLE ETC. Please find attached copy of standardisation sheet in…

Scan029 Request to fill in costs on a standardisation sheet for an experimental modification to the rear axle.
View original record D/Rd. from Hs. X4150 Hs/LG20.9.21 X.4150 - Modification to rear axle. Please find attached two copies of standardisation sheet for the above experiment. Will you kindly fill in the costs and return…

Scan030 Works order for a 14-tooth pinion rear axle to be fitted to the Landaulet Trials Car.
View original record WKS. ORDER No. XL299 CHASSIS No. 1-LW. Customer's No. Customer Messrs. Rolls-Royce Ltd. Customer's Order No. Bk10/DN/23.8.21. Owner's Name Conduit St. London. W.1 Stamped: 63903 Handwritten: Mod…

Scan031 Calculated pressure on the pinion ball thrust for a 40/50 chassis.
View original record R.R. 2152 (to T.) (S.H. 988. 22/2/21.) Rm. 1988;8. X4150 BY1-P30.9.21. Hs. from BY. X4150 40/50 CHASSIS. TORQUE TUBE & PROPELLER SHAFT. RE PRESSURE ON PINION BALL THRUST. We have run out the pressure…

Scan032 The testing of bevel pinion thrust bearings on a 40/50 axle.
View original record To R. from Hs. c. to CJ. c. to E. c. to BY. c. to EP. c. to EWT. for R.R.Inc. X.4150 copy B/R HS3/LG30.9.21. X.4150 - BEVEL PINION THRUST ON 40/50 AXLE. With reference to the scheme using the journal…

Scan033 The ongoing testing of thrust bearings and proposed modifications following gearbox failures.
View original record Contd. -2- Hs3/LG30.9.21. ---------------- destroyed two gear boxes in our tests on the thrust bearing. If we take top gear running as representing 95% of the running, we find that our test with a…

Scan034 Pressure on the pinion ball thrust for a 40/50 chassis.
View original record To Hs. from BY. COPY. BY1/P30.9.21. 40/50 CHASSIS - TORQUE TUBE & PROPELLER SHAFT. RE PRESSURE OF PINION BALL THRUST. We have run out the pressure on the ball thrust on various gears at maximum torque…

Scan035 Modification to the rear axle, requesting review of an attached standardisation sheet.
View original record To Wor. from Hs. X4150 Hs/LG3.10.21. X.4150 - Modification to Rear Axle. Please find attached copy of standardisation sheet for the above. Will you kindly remark upon, sign and return at your earliest…

Scan036 Modification to the rear axle and an attached standardisation sheet for review.
View original record X4150 To R. from Hs. c. to C.J. and B.J. Hs/LG4.10.21. X.4150 - Modification to rear axle. Please find attached copy of standardisation sheet for the above. Will you kindly remark upon, sign and…

Scan037 Recommendation to key the thrust washer for the rear axle pinion and to limit clearance in the Goshawk steering column to prevent rattling.
View original record X4150 To EY. from Hs. c. to EP. c. to Wor. Hs4/LG5.10.21. X4150 X4264 We recommend that the thrust washer in the double thrust for the rear axle pinion is keyed to the shaft in a similar manner to…

Scan038 Modification to the thrust washer keyway for the Goshawk 11 rear axle.
View original record XC4256 Mr D'Aeth, from BY. c. Hs. GOSHAWK 11. REAR AXLE. CENTRAL PORTION. BY1-P6.10.21. XC4256 Will you kindly arrange to have the thrust washer for the bevel pinion keyed on the above chassis in a…

Scan039 Attaching a completed standardisation sheet for a modification to a rear axle.
View original record To R. from Hs. c. to CJ. and BJ. c. to Wor. c. to RG. c. to Da. c. to BY. c. to EP. c. to PN. c. to EWT. for R. R. Inc. X4150 Hs/LG20.10.21. X.4150 - MODIFICATION TO REAR AXLE. We attach herewith…

Scan040 Standardisation proposal for modifying the rear axle journal bearing to handle reverse thrust from the Gleason Bevel Pinion due to failures on customer cars.
View original record R R 755 (S H) (S H 258, 10-0-20) G 2554 X4150 COMPLETED 20.10.21 STANDARDISATION of CHASSIS PARTS. Date 19.9.21. X No. 4150 Drawing No. Part List Description of Parts. Modification to rear axle to…

Scan041 Suitability of Michell thrust bearings and recommending alternative 'deep race' or 'New Departure' types for high-speed use.
View original record X4150 To BY. from R. c. to CJ. c. to Hs. c. to E c. to Da. c. to EP. _ _ _ _ _ _ _ _ _ _ _ _ R2/G27.10.21. X.4150 - RE MICHELL THRUST BEARINGS. X.547. With reference to your memo. BY5/P25.10.21, I…

Scan042 Letter to the Managing Director concerning the testing and implementation of a bevel thrust bearing.
View original record X. 4150 CC Mr. Belnap Mr. Fadin Oy2 - G 161121 Nov. 16, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Copies attached for Mr. Royce and Mr. Hives. Dear Sir:- Re: Bevel…

Scan043 Evaluation of various bearing designs, including pinion journal and double row types, based on road test performance.
View original record Oy2 - G 161121 Sheet #2. Our pinion journal bearings are all deep groove un-slotted, having 8 7/8" balls, turned bronze cage, race radius .446" = 52% of ball dia., race depth .1312" = 15% of ball dia.…

Scan044 Proposal for a new bearing scheme to reduce manufacturing costs, fitting costs, and unsprung weight.
View original record Oy2 - G 161121 Sheet #5. Both the New Departure and Hess-Bright bearings are 55 m/m bore, 100 m/m dia. and 1 3/16" wide. We think that this scheme has great possibilities in - (a) Reducing…

Scan045 Query regarding an oil leak from the Goshawk 11 back axle.
View original record To Hs. from Da. X4253 Dal/G15.11.21. X.4256 - RE GOSHAWK 11. BACK AXLE. Mr. Royce is not sure whether the oil leaked from the back axle when running, or only when stopped, though he had the impression…

Scan046 Report concerning a leak from the Goshawk 11 rear axle that occurs when the vehicle is stationary.
View original record Da. from Hs. x4256 Hs5/LG17.11.21. LEAK FROM GOSHAWK 11. REAR AXLE. X.4256 The leak from the axle pinion shaft only occurs when the car is stationary. Hs.

Scan047 Telegraph confirmation regarding an urgent request for the despatch status of an axle.
View original record POST OFFICE TELEGRAPHS X4299 No of Telegram: 39 Office Stamp: PADDINGTON B.O. W.2 2.15PM 15 JA 26 Recd. from: 3S B: Powt Handed in at: 12-46 Office of Origin and Service Instructions: Regent St B.…

Scan048 Mr Royce's enquiry for banjo type axles and arranging for a sample to be sent for his inspection.
View original record X3457 Hs. from BY. RECEIVED FC NOV 19 21 BY11-P18.11.21. REAR AXLE. Mr Royce was enquiring for particulars of Banjo type axles, pressed in two halves and welded. I have in my office a sample axle…

Scan049 The examination and wear of an improved reverse thrust method for the back axle pinion.
View original record Hs. from Hm. [strikethrough]S.C.CO.DY.[/strikethrough] Hs X4150 [STAMP] DEC 8 1921 RECEIVED [/STAMP] Hm12/W2.12.21. Re Improvement for the Reverse Thrust for the [underline]Back Axle[/underline] We…

Scan050 The chassis gear ratios for the Goshawk 11.
View original record X4256 X.4219 - GOSHAWK 11. CHASSIS GEAR RATIOS. 5.12.21. X4256 The three back ratios are - 13/60, 14/60, and 15/60. giving ratios of - 1 : 4.285 1 : 4.615 1 : 5 Taking the intermediate back axle…

Scan051 Production hold-ups and design changes for the Goshawk 11 rear axle, hub, and brake.
View original record R.R. 63 (see T) (S.H.28. 21-6-20.) Bux. 2/17/25. X4256 RECEIVED 11 OCT 1922 BY5-P17.1.22. Mr D'Aeth. from BY. c. Hs. X4256 X4257 GOSHAWK 11. REAR AXLE. REAR HUB & BRAKE. It should be noted that in…

Scan052 Comparison of the diameters of Dunlop cord beaded and straight-sided tyres and the negligible effect on gear ratio.
View original record C. from Hs. c. to BY. c. to EP. X4299 Hs2/LG27.1.22. DUNLOP STRAIGHT-SIDED TYRES. X4050 X4299 At your request we have measured the difference in diameter between a 695 X 130 Dunlop cord beaded tyre…

Scan053 Requesting feedback on shock absorbers, a carburettor, and a 14-tooth axle, and discussing upcoming car deliveries.
View original record FN. from Hs. X4299 HS2/LG3.2.22. X4426 X4299 X4219 X4367 X3923 Y3461 We send you herewith blue-print showing the method of fitting the Hartford Shock Absorber to the rear of a 40/50 H.P. Car. I shall…

Scan054 Test programme for an open touring car with a 14-tooth axle to compare the effects of high and low compression.
View original record To E.R. from B.J. (Dictated 3rd.) Copy to Hs. SPECIAL TESTS. X4299 BJS/H4.2.22. Confirming our conversation this morning, our chief object is to obtain practical experience of running an open touring…

Scan055 The arrangement of special compression and gear ratio tests on various cars, including the Goshawk model.
View original record Bd. from EP. c. to Hs. EP9/H6.2.22. 3 AT X4299 X4258 X4263 Re. Special Compression & Gear Ratio Tests. X4299 X4219 With reference to your BJS/H4.2.22, I have already discussed with Mr. Hives the…

Scan056 Gearing for the Goshawk back axle, specifically the crown wheel and pinion options.
View original record To BY. from R. c. to CJ. c. to LHS. c. to PN. c. to Wor. c. to Hs. c. to EP. c. to Hy. X4256 R1/M15.2.22. RE. GOSHAWK BACK AXLE - X.4256. Referring to the back axle for the Goshawk, we notice a 60…

Scan057 Instructions detailing axle and pivot inclination for the 40/50 and Goshawk II chassis.
View original record R.R. 300 (120 B) (SC. 576. 25.2.16) E.P. 1262. X3457 72811 ROLLS-ROYCE LIMITED. INSTRUCTIONS. FEB 20TH 1922 To MR HINES - EXP DEPT. Order No. X4256. X3457 Customer's No. Re AXLE & PIVOT INCLINATION. ¢…

Scan058 Inter-office letter requesting a layout and experimental results for a proposed three-speed gearbox for the 40/50 model.
View original record X4299 R. H. A. 9S 2M. 12-20-20 40649 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy3 - G 23222 February 23, 1922 Dear Hives:- Re: Three Speed Box We should very much…

Scan059 With extracts from Mr. Northey's letter regarding 14 tooth axles and travel plans.
View original record To C. H. Hs. CJ. Cr. from BJ. BJ2/H27.2.22. X4299 The following are extracts from Mr. Northey's letter of the 20th February from Monte-Carlo:- "Undoubtedly 14 tooth axles for all closed cars and most…

Scan060 Assessment of 14-tooth axles for touring in France, noting their performance on hilly terrain.
View original record X.4299 Extract from PN2/MB/7.2.22 X.4426. With regard to the 14-tooth axles for touring in France, I find these desirable in every way, except in perhaps fuel consumption. There is a very marked…

Scan061 Noisy axle, engine vibration, and potential magneto upgrades for a Trials Landaulet car.
View original record Hs X4299 2. PN3/DN/8.3.22. TO EP. c. to HS. & CX. X3922 TRIALS LANDAULET - 1-LW. X4299 X4181c It is most important that we have a sufficiently quiet 14-tooth axle for this car at the earliest moment.…

Scan062 The standardisation of 14-tooth axles on closed cars, pending Mr. Royce's approval due to his concerns about potential engine wear.
View original record HS X4299 To Wor. from CJ. Copy to Hs. 14 Tooth Axle on Closed Cars. CJ1/E16/3/22 Has the standardisation sheet for the application of 14-toothed axles to all covered cars yet been completed and has…

Scan063 Lateral adjustment of a pinion on Gleason gears, with diagrams.
View original record C O P Y. V4150 Rolls-Royce Inc. (America) Springfield, Mass. America. OY1/G16.3.22. Mar. 16th, 1922. Dear Hives. Re: Lateral Adjustment of Pinion On Gleason Gears. V4150 We notice in the "Automobile…

Scan064 Improvements to axle and gear assembly to reduce noise and testing requirements.
View original record contd:- -2- As a result of this test it was also proved that this pair of gears, which showed good finish but was noisy, was made silent by adjusting the pinion to give an even bedding. We then…

Scan065 Inter-office correspondence regarding the lateral adjustment of a pinion on Gleason gears.
View original record X3G12 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. [RR Logo] Cyl - G 16322. March 16, 1922 Dear Hives:- Re: Lateral Adjustment of Pinion on Gleason Gears. X4180 X3G12 We…

Scan066 Adjustments made to pinion gears to reduce noise, detailing modifications to the test rig and oil return mechanisms.
View original record Oy1 - G 16322 Sheet #2. PINION BEFORE ADJUSTMENT PINION AFTER ADJUSTMENT IN THE FIRST CASE TRIED. DISTANCE d WAS ABOUT .010 As a result of this test it was also proved that this pair of gears, which…

Scan067 Letter discussing the benefits of lapped gears from Gleasons in reducing road testing on axles.
View original record Oyl - G 16322 Sheet #3 which was necessary with the plain thrust, I thought this information might be of interest to you as a means of greatly reducing road testing on axles. As you know we do not…

Scan068 Letter from the American office to Mr. Hives regarding the lateral adjustment of a pinion on Gleason gears.
View original record COPY. Rolls-Royce Inc. (America) Springfield, Mass. America. OY1/G16.3.22. Mar. 16th. 1922. Dear Hives. Re: Lateral Adjustment of Pinion On Gleason Gears. We notice in the "Automobile Engineer", of…

Scan069 Adjustments to axle gears and pinions to reduce noise and improve bedding.
View original record contd:- -2- As a result of this test it was also proved that this pair of gears which showed good finish but was noisy, was made silent by adjusting the pinion to give an even bedding. We then…

Scan070 Requesting a Goshawk 12 tooth back axle pinion to assist with the design of the Peregrine pinion.
View original record X4256 To Hs. (Mr. Warwick.) from Da. Dal/M23.3.22. We should like to see a 12 tooth back axle pinion for the Goshawk. This would help us in the design of the Peregrine pinion which is now nearly…

Scan071 Standardisation and use of a 14-tooth axle for improved performance in various conditions.
View original record To Hs. from BJ. BJ20/H23.3.22. V4299 Re 14-tooth Axle. --- Mr. Royce passed a standardisation sheet with regard to the 14-tooth axle which says, "to improve the performance of cars with heavy bodies".…

Scan072 Instructing Stores to despatch a Rear Axle Pinion to Mr. Day for inspection.
View original record X4256 BP. from Hs/TMW. c. to Mr. Chatwin. Hs/TMW1/LG28.3.22. We are sending into the Stores - 1 Rear Axle Pinion. Will you please issue instructions to Stores for this to be despatched to Mr. Day.…

Scan073 Confirming the despatch of a Goshawk rear axle pinion.
View original record X4256 To Da. from Hs/TMW. Hs/TMW2/LG28.3.22. GOSHAWK 11. REAR AXLE. We have despatched to you today - the Goshawk rear axle pinion requested in your Dal/M23.3.22. Hs/TMW.

Scan074 Lateral adjustment of pinion on Gleason gears and issues with obtaining quiet axles.
View original record Hs. from EP. c c Wor c c By. file Y3612 EP3/LG29.3.22. We enclose letter from OY. dated Mar.16th. with reference to Lateral Adjustment of Pinion on Gleason Gears. I am taking this matter up with Wor.…

Scan075 The failure and investigation of a Goshawk-11 rear axle breakage.
View original record Hy/Hs. from EP. V4286 EP3/LG24.4.22. X4286 (crossed out) GOSHAWK-11 REAR AXLE BREAKAGE, X4086 The rear axle on 1-Goshawk-11 has failed and we are now dismantling the axle for investigation and will…

Scan076 Request for analysis of a broken axle shaft from a Goshawk-11 car.
View original record Hl. from Hs/TMW. X4256 Hs/TMW1/LG25.4.22. RE GOSHAWK-11 AXLE. Herewith broken axle shaft off 1-Goshawk-11 car, Will you please analyse and report on this in the usual way. Hs/TMW.

Scan077 Instructing Stores to despatch a portion of a broken axle shaft for examination without charge.
View original record X4256 BP. from Hs. c. to Mr. Chatwin - Stores. Hs3/LG28.4.22. We are sending into the Stores for despatch to Da. W.W. - 1 portion of broken axle shaft. This is being sent for Da's examination and…

Scan078 Broken and twisted rear axle shaft on the Goshawk-11 experimental car.
View original record X4256 Da. from Hs. c. to E. c. to BY. c. to EP. Hs2/LG28.4.22. GOSHAWK-11 REAR AXLE. X4256 We are sending to you a portion of broken axle shaft which has occurred on 1-Goshawk-11. This car is the…

Scan079 Micro-examination report on a Goshawk Rear Axle Shaft, detailing chemical analysis and structural faults.
View original record R.R. 199 (500 H) (SD. 206. 15.8.17) M.P. 176549. X4256 MICRO-EXAMINATION REPORT. Hs/TMW. H12/EJW.4.5.22. Laboratory. Re. Goshawk Rear Axle Shaft- 5RG1. ( Your ref: Hs/TMW1/LG25.4.22.) Analysis:…

Scan080 Mechanical test results of a material before and after laboratory heat-treatment.
View original record R.R. 196 (500 H) (SD. 296. 18.3.17) M.P. 176549. inclusion running in broken strings. Segregation of phosphorus was very pronounced in the " as received " specimens, but was practically eliminated by…

Scan081 Photomicrograph showing a magnified view of a material sample.
View original record R.R. 403 [5 H] (S H 839, 31-12-20) G 2964 ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A175 MAGNIFICATION : 50 DIAMETERS.

Scan082 Laboratory photomicrograph showing a material's structure at 50 diameters magnification.
View original record R R 403 [5 H] [S H 839, 31-12-20] G 2964 ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A176 MAGNIFICATION: 50 DIAMETERS.

Scan083 Confirming modifications to the Goshawk 11 rear axle based on Mr. Royce's instructions.
View original record X.4256 To BY. from Da. c. to CJ. c. to Wor. c. to Hs. Dal/M8.5.22. GOSHAWK 11. REAR AXLE. X.4256. This is to confirm having handed to you at Derby N.sch.1262 shewing our suggestions for strengthening…

Scan084 Material experiments for the Goshawk II rear axle shafts due to wear on the gear teeth.
View original record R.R. 199 (250T) (SD696 19-7-17) MP 180865 X4256 BY10/H. 18. 5. 22. SJ. for R. c. Hs. GOSHAWK II. REAR AXLE SHAFTS. Owing to the wear on the gear teeth of the wheel which is formed integral with the…

Scan085 Issues with the Goshawk 11 improved differential and suggesting material and design changes.
View original record X.4256. To Hs. from R. c. to CJ. BY. Wor. c. to Hy. EP. R1/M/19.5.22. GOSHAWK 11. IMPROVED DIFFERENTIAL X.4256. The trouble with the differential crown wheel rolling teeth is almost certainly due to…

Scan086 Two proposals for fitting a pad to the Goshawk 11 rear axle to receive a tie rod.
View original record To BY. from Da. c. to CJ. Wor. Hs. X.4256. Dal/M25.5.22. RE GOSHAWK 11. REAR AXLE. X.4256. We send herewith N.sch.1283 shewing two proposals for fitting a pad to the lower part of the axle centre box,…

Scan087 Use of deep groove Hoffman bearings for the Goshawk II rear axle bevel pinion thrust.
View original record X4256 BY9-H. 25. 5. 22. Hs. c. Mr D'Aeth GOSHAWK II. REAR AXLE. RE BEVEL PINION THRUST. In a note from Da. he now states that he was misled in thinking he had supplied us with a design for taking the…

Scan088 Letter to the Dunlop Rubber Co. Ltd. providing the unsprung and sprung weights for the front and rear axles of a 40/50 complete car.
View original record X3457 Hs2/T. x 200 30th May, 1922. The Dunlop Rubber Co. Ltd., Aston Cross, Birmingham. Dear Sirs, With reference to your telephone message received yesterday, asking for the ratio of unsprung weigh…

Scan089 Trial of a Hoffmann deep groove bearing for the Goshawk rear axle.
View original record X.4256. To EY. from Da. c. to CJ. c. to Wor. c. to Hs. Da4/M.6.22. GOSHAWK - REAR AXLE X.4256. We send herewith N.sch.1295 shewing a Hoffmann deep Groove bearing, arranged to take the end thrust of…

Scan090 Inter-office correspondence regarding the performance and implementation of the 14 T. Axle.
View original record R.R.A. 25 25m. 12-20-20 40849 X4299 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. Oyl - G 9622 June 9, 1922 CONFIDENTIAL Dear Hives: Re: 14 T. Axle (Hs 5/ G 11.5.22) We…

Scan091 The comparative testing of two different types of Goshawk II rear axle shafts.
View original record To R. from Hs. c. to CJ. c. to E. c. to Ds. c. to By. X4256 Hs7/LG12.6.22. GOSHAWK II - REAR AXLE SHAFTS. X4256 We have had made by an outside firm (E.N.V. Ltd) two pairs of Goshawk rear axle shafts,…

Scan092 Comparative test report on standard nickel chrome vs. air-hardened axle shafts for the Goshawk 11.
View original record Y4256 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. Hs1/LG16.6.22. GOSHAWK 11. TESTS ON AXLE SHAFT AND DIFFERENTIAL. X.4256. We have made a comparative test between the standard nickel chrome…

Scan093 Recommendation to reduce the oil level in the Goshawk 11 rear axle.
View original record V4256 BY. from Hs. Hsl/LG20.6.22. GOSHAWK 11. OIL LEVEL IN REAR AXLE. X4256. We recommend that we reduce the oil level in the rear axle making it 3/8" lower than it is at present. Hs.

Scan094 Deciding to use air-hardened steel for Goshawk back axle driving shafts in the future.
View original record X.4256. To Hs. BY. Wor. from R. c. to UJ. R2/M21.6.22. RE. GOSHAWK BACK AXLE. X.4256. Regarding driving shafts it is understood that air hardened steel has proved to be the more satisfactory for these…

Scan095 Experimentally correcting cross bedding in Bevel Gears on a 40/50 chassis rear axle using eccentric housings.
View original record X.3457. To ns. from BY. BY10/P5.7.22. 40/50 CHASSIS - REAR AXLE X.3457. X.4150. With reference to the statement put forward by OY. from America, that they are using eccentric housings for correcting…

Scan096 Testing a 14-tooth axle versus a 15-tooth axle on 40/50 HP cars at Brooklands Track.
View original record [HANDWRITTEN]: X42.99 To Hs. from BJ. BJ2/H7.7.22. [STAMP]: E.C.D JUL 7 1922 RECEIVED [HANDWRITTEN]: 2 Tests with 40/50 h.p. Cars on Brooklands Track. [HANDWRITTEN]: X42.99 X3545 X 788 With reference…

Scan097 Tests of 40/50 cars at Brooklands track, comparing 14-tooth and 15-tooth axles.
View original record BJ. from Hs. X 4299 Hsl/LGS.7.22. P TESTS WITH 40/50 CARS ON BROOKLANDS TRACK. X4299 X3545 X788 We shall be sending an open car fitted with a 14-tooth axle to Brooklands on Tuesday in order to make a…

Scan098 Use of eccentric housings for correcting cross bedding in bevel gears on a 40/50 chassis rear axle.
View original record Y4150 1 Hs. from BY. BY10-P5.7.22. 40/50 CHASSIS. REAR AXLE. Y3457 X 4150 With reference to the statement put forward by OY, from America, that they are using eccentric housings for correcting cross…

Scan099 Requesting petrol consumption tests for a 40/50 car at Brooklands Track under simulated normal driving conditions.
View original record X4299 2 To Hs. from BJ. BJ3/H10.7.22. X4299 X3545 X788 RECEIVED 10 JUL 1922 Tests with 40/50 Cars on Brooklands Track. Hs1/LG.7.22. From a selling point of view the thing that we are most interested…

Scan100 Test procedure to simulate London traffic conditions.
View original record To represent London traffic the test might also include stopping and starting 20 times, and standing still with the engine running for five minutes. B.J.

Scan101 Directive to cease delivery of high-compression chassis to preserve the car's traditional qualities of silence and smoothness.
View original record X4299 To C. from CJ. To Cx. " " To PN " " To R. " " To WOR. " " To EP " " To Hulley " " To Evans " " To Sp " " To Hs. " " X. 634 X. 4299 X. 2565 CJ5/E14.7.22. Please note and inform all concerned that…

Scan102 Internal directive about maintaining testing standards, prioritizing quality and the reputation for 'silkiness and silence' over delivery pressures.
View original record contd:- -2- should not pass test. Testing officials must not be lured off the path of their duty by representation from Sales Officials and others that delivery is of prime importance. Quality is of…

Scan103 Vibration complaints on the 40/50 chassis, concerning open versus closed cars and changes to compression and axle ratios.
View original record To BJ. from Hs. c. to R. c. to CJ. c. to Wor. c. to BY c. to EP. c. to PN. c. to Br. X634 X4299 Hs1/LG22.7.22. COMPLAINTS OF VIBRATION FROM 40/50 CHASSIS. X.4299. X.196 X.634 BJ13/H20.7.22. The reason…

Scan104 Issues with the 14-tooth axle and vibrations from fan belts.
View original record contd:- -2- was typical on the pre war cars. We have the impression at the Works that the 14-tooth axle for light open cars, is wrong. The disadvantages may not be apparent with a new car but when the…

Scan105 Vibration complaints on the 40/50 chassis, potential causes, and proposed solutions.
View original record To Hs. From BJ. c. to R. c. to CJ. Wor. BY. EP. Br. PN. X4299 BJ13/H20.7.22 COMPLAINTS OF VIBRATIONS ON 40/50 CHASSIS, Hs1/LG19.7.22. X.634 X.790 X.4299 I was interested to read your report to R.…

Scan106 Policy decision on standardizing cars with low compression and 14-tooth axles, weighing performance benefits against potential vibration issues.
View original record contd:- -2- to decide on a policy of standardising cars with low compression and 14-tooth axles, which we hope will give adequate life, speed, silence, absence of vibration. When PN. returned from the…

Scan107 Request for the results of experiments on different pinion thrust bearings for the Goshawk back axle.
View original record To Hs. from Da. X4256 Da2/1821.7.22. GOSHAWK BACK AXLE. X.4256. X.3550. We are very desirous of knowing the results of experiments in pinion thrust bearings on Gos.11. You will remember that there are…

Scan108 Compression and axle gear ratios for 40/50hp models, comparing open and closed body styles.
View original record To Hs. from R. c. to CJ. BJ. c. to Wor. BY. c. to EP. PN. X4299 R2/M25.7.22. X.790. X.3426 X.4299 I think Mr. Hives's memo. regarding the roughness of the present 40/50s is quite in accordance with my…

Scan109 Report discussing engine stress, performance, and the importance of weight reduction in maintaining vehicle quality.
View original record contd:- -2- surprising that it is as quiet as it is, and wears as well, as between 2000 and 3000 revs. for such an engine is quite fast, and even light connecting rods, and aluminium pistons exert…

Scan110 From CJ to Hs requesting the results of the Brooklands experiments with 14-tooth axles.
View original record To Hs. from CJ. X4299 CJ5/E27/7/22 X4299 X 788 Have you yet the results of the Brooklands experiments with 14-tooth axles? If so, please let me see them. CJ.

Scan111 Inaccurate test results at Brooklands for a car fitted with a 14-tooth axle and the plan to re-test.
View original record CJ. from Hs. X4299 Hs1/LG29.7122. TESTS ON BROOKLANDS WITH CAR FITTED WITH 14-TOOTH AXLE. X4299 Y788 We do not consider the results we obtained on Brooklands when the tests were taken 10 days ago,…

Scan112 Awaiting the results of tests on 14-tooth axles, compression and vibration at Brooklands.
View original record S/W Hs. X4299 C13/C3.8.22. Re 14-tooth Axles, Compression and Vibration, etc. X4299 X634 x788 This matter was again discussed at the Sales Conference on Tuesday, but we are awaiting the result of your…

Scan113 Standardisation sheet for a modification to the machining of the Rear Axle Thrust Housing.
View original record X4150 To R. from Hs. c. to CJ.BJ. c. to WoD. c. to Rg. c. to Da. c. to BY. c. to EP. c. to PN. c. to R.R. Inc. (EWT.) Hs/LG22. 8.22. X.4150 - Modification to machining of Rear Axle Thrust Housing. We…

Scan114 Short memo requesting the results for the Brooklands Test with the 14-tooth axle and the Goshawk.
View original record X4299 1 S/W Hs...from BJ. BJ8/C28.8.22. X4299 x788 When do you think you will be able to let us have the result of the Brooklands Test with the 14-tooth axle, and of the Goshawk. We should be very…

Scan115 Proposal for a modification to the machining of the Rear Axle Thrust housing to make quieter rear axles.
View original record R.R. 765 (5 H) (S.J. 29), 1-10-21) G. 5087 COMPLETED 22.8.22 STANDARDISATION of CHASSIS PARTS. Description of Parts. Modification to machining of Rear Axle Thrust housing. Origin. To assist in…

Scan116 Modification to the rear axle thrust housing.
View original record hs2/LG11.8.22. MODIFICATION TO REAR AXLE THRUST HOUSING. This improvement was pointed out by R-R Springfield. We attach copy of letter ref. CYL/G16.3.22. We have fitted up an axle with this…

Scan117 Letter to Hives regarding the lateral adjustment of the pinion on Gleason gears and comparing adjustment methods.
View original record COPY. Rolls-Royce Inc. (America), Springfield, Mass., America. OY1/G16.3.22 Dear Hives, Re. Lateral Adjustment of Pinion on Gleason Gears. A.4150. We notice in the "Automobile Engineer" of October…

Scan118 Resolving gear noise issues by adjusting pinion bedding and modifying test rigs and axle components.
View original record contd:- -2- As a result of this test it was also proved that this pair of gears, which showed good finish but was noisy, was made silent by adjusting the pinion to give an even bedding. We then…

Scan119 Cost implications of a modification to the machining of the rear axle thrust housing.
View original record COPY. My/JW/Nl/139a/M12.8.22. X.4150 - MODIFICATION TO MACHINING OF REAR AXLE THRUST HOUSING. We return herewith copy of above standardisation sheet, with cost filled in. You will note the small…

Scan120 Performance requirements and axle modifications for The Earl Of Rocksavage's new chassis.
View original record X4299 To EP. c. to BJ. and Hs. PN7/DN/28.8.22. X.1725 X.2565 X.4299 Re. The Earl Of Rocksavage's new chassis. I have to day had a further letter from this gentleman discussing acceleration and speed…

Scan121 Axle and engine specifications for a chassis being built for Lord Rocksavage.
View original record c. to Hs. Re. 43-RG. Lord Rocksavage. We have received your memo PN7/DN28.8.22, and in accordance with your instructions will arrange for a 14 tooth axle to be fitted. With regard to the previous…

Scan122 Urgent request for a report on the Brooklands tests for the 14 and 15 tooth axle.
View original record S/W Hs. From BJ. X.4299 BJ4/C1.9.22 X.788 X.4299. Please let me know when you expect to be able to let us have a report of the Brooklands tests with the 14 and 15 tooth axle. This matter is very…

Scan123 Telephone message regarding comparative petrol consumption tests for different axles and compression levels.
View original record X.4299. 15.9.22. Telephon message. 10-20 a.m. Hs. from BJ. X.788 X.4299. . CJ. has examined Brooklands test and requires urgently results of comparative petrol consumption tests with 14 and 15 tooth…

Scan124 And requesting results from the Brooklands tests regarding petrol consumption for different axles and engine compressions.
View original record To Hs. from BJ. X4299 BJ1/H15.9.22. BROOKLANDS TESTS. X.788. X.4299. X.3056. X.790 Confirming telephone message this morning, we hope that you will be able to send us the result of the petrol…

Scan125 Conditional approval for using Gleason gears on chassis prior to 1700.
View original record To Hm. from Da. c. to Hs. X4150 DaL/M16.9.22. GLEASON GEARS FOR CHASSIS PRIOR TO 1700 X.4150. X.3612. Replying to your memo. Hm/NCRL/W23.8.22., Mr. Royce approves in principle of the arrangement shown…

Scan126 Mr. Royce's conditional approval for a Gleason gear arrangement for chassis prior to 1700.
View original record To Hm. from Da. c. to Hs. X3612 Dal/M16.9.22. GLEASON GEARS FOR CHASSIS PRIOR TO 1700 X.4150. X.3612. Replying to your memo. Hm/NCR1/W23.8.22., Mr. Royce approves in principle of the arrangement shewn…

Scan127 Technical memo about the performance of taking over-run thrust on a bevel pinion through the journal bearing on Gleason gears, compared with the Springfield method.
View original record X3612 Da. from Hs. c. to Hm. Hs4/LG19.9.22. X4150 X3612 GLEASON GEARS. We have had no failure or any trouble whatever with the scheme of taking the over-run thrust on the bevel pinion through the…

Scan128 Scheme for taking the over-run thrust on the bevel pinion in Gleason gears.
View original record Da. from Hs. c. to Hm. Hs4/LG19.9.22. GLEASON GEARS. X4150 X3G12 We have had no failure or any trouble whatever with the scheme of taking the over-run thrust on the bevel pinion through the journal…

Scan129 Single quenching process for gears made from 5% case-hardened nickel steel.
View original record To BY. from R. To Wor. " Hs. " EP. " HL. c. to CJ. X 3612 R1/M22.9.22. RE. BEVEL AND OTHER GEARS, ETC X.3612. X.492. Gears made in 5% case-hardened nickel steel should not require quenching more than…

Scan130 Letter correcting a statement about the incorrect axle gear ratio on Goshawk chassis.
View original record X4256 TO GV. [EP. struck through] from Wor. c. to Hs. There is one remark in your long memo. on the incomplete state of Goshawk chassis, dated the 29th Sept. that I feel ought to be pointed out as…

Scan131 Telegram from Paris to Derby regarding the examination and adjustment of a rear axle and the despatch of a roller-bearing.
View original record X4258 Recd from: B... A... Words: 52 No. of Telegram: 4 Office Stamp: [LONDON E.C. 7 15 PM 7 OC 28] Office of Origin: Paris Handed in at: 3.10 Received here at: 7.10pm TO: Royces Derby Angleterre…

Scan132 Telegraph message reporting damage to a pinion shaft cage during dismantling.
View original record POST OFFICE TELEGRAPHS. This Form must accompany any inquiry respecting this Telegram. Office of Origin and Service Instructions. Office Stamp: DERBY MR 22 26 (2) of pinion shaft full stop cage was…

Scan133 Works order for the dispatch of a 'Goshawk' type rear axle for experimental car 7/G/II.
View original record AFTER WRITING TEAR ALONG THIS PERFORATION (Regd.) "MP" (Regd.) FIVE-IN-ONE CARBON COPY 231121 MANIFOLDIA LTD., INVENTORS AND PATENTEES, WEST BROMWICH. RF 6190 (10M / SH 761 28-11-20' MP 231121…

Scan134 Relaying a telegram about a Goshawk rear axle examination and adjustments.
View original record Hs P/Berby X4256 Th4/EGB282 Oct 9 1922 X4256 X3609 GOSHAWK. At Mr LIDSEY's request I yesterday sent you the following telegram: HIVES HAVE EXAMINED REAR AXLE AND CARRIED OUT ADJUSTMENTS AS INSTRUCTED…

Scan135 Changing the axle ratio on the Goshawk-11 car for demonstration purposes.
View original record To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to PN. c. to EP. V4256 Hs1/LG10.10.22. GOSHAWK-11 AXLE RATIOS. X4256(crossed out) X4545 At Sales request we have changed the axle ratio on…

Scan136 Wire communication confirming the arrival of mechanics and a new axle for a Goshawk repair.
View original record Hs P/Hs X4256 RECEIVED OCT 19 1922 Hs Wa.6/Go.II.10.22 re GOSHAWK 7-G-II We beg to acknowledge receipt of your wire reading as follows:- Sending mechanics to repair Goshawk axle also sending new…

Scan137 Telegraph confirming the arrival of mechanics to fit a new axle and roller bearing.
View original record Roycar Derby. Howes mechanics have arrived new axle is advised stop do not worry about alarmist rumours have already quietened axle shall fit new roller bearing tonight. wallis

Scan138 Shock absorber settings and axle ratios for the Goshawk-11 car.
View original record X4256 To R. from Hs. C. to C.L. C. to B.J. Hs4/LGE.2.10.22. 6-GOSHAWK-11. X4329 X4256 We realise that the shock absorbers on this car are set with too much friction. They were adjusted to suit the…

Scan139 The allocation and shortage of 13-tooth axles for Goshawk II trials and production cars.
View original record X4256 BY. c. to Hs. EP/Thn10/Hl6.10.22. re. GOSHAWK II. AXLE RATIO. X4256 With reference to Mr. Hives memo,Hs1/LG10.10.22, on receipt of this memo we telephoned to Hs. and as a result of the…

Scan140 Standardisation document for fitting Gleason gears to axles on chassis prior to the 1700 series.
View original record R.R. 786 15 B1) (S.J. 291, 1m-10-21) G. 2057. /3612 COMPLETED 16.11.22. STANDARDISATION of CHASSIS PARTS. Date 16.11.22 Description of Parts. FITTING GLEASON GEARS TO AXLES ON CHASSIS PRIOR TO 1700.…

Scan141 Investigating a 'booming' noise in a Limousine trials car, concluding it originates from the exhaust note synchronizing with the body.
View original record X4256 To Hs. from Da/Ev. c. to Da. c. to Sp. Da/EV2/M5.12.22. RE. LIMOUSINE TRIALS CAR X.4256. X.4238 The limousine trials car is apparently useless due to it being a dreadful boomer, and up to the…

Scan142 Axle gear ratio for the Goshawk chassis, detailing a change for the Paris Trials car.
View original record X4256 BJ. Gp.dr. dr.Wgr. c. Hs. re. AXLE GEAR RATIO FOR GOSHAWK CHASSIS. We have just received instructions per telegram from Sales, reading as follows:- "BAILEY - BJ. AGREES PARIS TRIALS GOSHAWK…

Scan143 Axle gear ratios and engine specifications for Goshawk chassis demonstration cars for various overseas countries.
View original record X4256 To BY. from BJ. Copies to G. Sg. Mor. Hs. BJ5/H11.12.22. RECEIVED DEC 11 1922 HS AXLE GEAR RATIO FOR GOSHAWK CHASSIS EP/Thn4/HS.12.22. With regard to demonstrating cars for oversea countries, it…

Scan144 Rear axle ratios for the Goshawk chassis, including a list of cars and their fitted axles.
View original record X4256 BY11/H. 13.12.22. B.J. Gen. MP. (Strikethrough) C. C./MP. Gen C. (Strikethrough) C./MP. BG. (Strikethrough) Gen. HCT. C. Hs. ---------------- GOSHAWK CHASSIS. REAR AXLE RATIO. ----------------…

Scan145 List of Goshawk chassis on test, requesting information on the axle ratios to be fitted.
View original record - 2 - BYLL/H. 13.12.22. ----------------- We have also procured from the Test Dept. and give below, a list of other Goshawk Chassis on test, and we shall be glad if you will let us know as soon as…

Scan146 The performance and interchange of rear axles between a 7-Goshawk-11 and a London Demonstration Car.
View original record X4256 REAR AXLES FITTED TO 7-GOSHAWK-11 & LONDON DEMONSTRATION CAR(LANDAULET). Axle fitted to 7-Goshawk-11 - Derby to London Fairly good at low speeds - uneven over 25 m.p.h. Axle cannot be called…

Scan147 Development of a quieter Goshawk back axle to resolve noise issues and proposing a test in a demonstration limousine.
View original record X.4256. To BJ. from Wor. c. to R. c. to CJ. c. to PN. c. to Sg. c. to LHS/Sp. c. to Hs. Wor1/M19.12.22. NOISY BODIES AND NOISY AXLES ON G.11. X.3730. X.4256. May we suggest that we have the new green…

Scan148 The potential fracture of a back axle's aluminum casing on a 20 HP chassis due to cold temperatures.
View original record X6256 S/W. Copy to F.J.R. " " Hs. " " S.P. " " H.P. RECEIVED DEC 30 Sg1/BW/28.12.22. Re: Back Axle of Schmidt's 20 HP. Chassis - No. 41/G/5. Referring to former correspondence. We attach copy of…

Scan149 Letter detailing an accident with a 20 HP car in Switzerland, resulting in a cracked rear axle casing likely caused by icy conditions and extreme cold.
View original record 18th December, 1922. Dear Sirs, Re: Accident to 20 HP. I beg to confirm my telegram of to-day's date reading :- "Middle of rear axle casing Chassis 20 HP 41/G/5 has cracked in touching stone. Send…

Scan150 Proposing a Technical Committee meeting regarding the back axle of a 20 HP Chassis.
View original record Hon. [strikethrough] c. to Hs. c. to BY. [strikethrough] X4258 EP/Thn6/H9.1.23. re. Back Axle of Schmidt's 20 H.P. Chassis No. 41-G-5. -------------------- With reference to letter from Sales Dept.…

Scan151 Accident involving the back axle of a Schmidt's 20 HP chassis.
View original record To EP. from Hs. c. to Wor. c. to BY. X4256 Hs1/LG10.1.23. RE. BACK AXLE OF SCHMIDT'S 20 HP. CHASSIS. I discussed this matter with R. when I was at W.W. last week. The memo. Sg1/BM28.12.22 was shown to…

Scan152 The performance of a 5-Goshawk-11 model, detailing the quiet operation and considerations for modifications.
View original record To BJ. from R. c. to CJ. LHS. c. to BY. Wor. c. to Hs. EP. c. to E. Da. X4256 R11/M19.1.23. GENERAL X. 4219 X. 4256 X. 790. From 5-Goshawk-11 (Gwynne all-weather body) I have concluded that the back…

Scan153 Failure of a Goshawk 11 axle on Mr. Schmidt's car and a proposed modification.
View original record To EY. from Hs. To Da. from Hs. X4256 Hsl/LG20. 2. 23. FAILURE OF GOSHAWK 11. AXLE. Mr. Schmidt's Car. We took the piece which had failed to W.W. on our last visit. Mr. Royce instructed that the…

Scan154 Modifications to the Goshawk rear axle centre casing to prevent breakage.
View original record X.4265. To BY. from Da. c. to CJ. c. to Wor. c. to Hs. Da2/M3.3.23. GOSHAWK REAR AXLE. X.4265. We send herewith N.sch. 1381 shewing the modifications to the rear axle centre casing which Mr. Royce…

Scan155 The supply problems of Gleason gears for repairs, proposing to standardise on alternative gear ratios.
View original record Y3612 To Wor. " Sft. " Wd. " By. " EP. " Hs.✓ " Wd/Ms. Hm18/W15.3.23. Gleason Gears for Repairs. Re Wor6/M15.3.23. and Wd1/NJ15.3.23. We are in a very bad way for Gleason gears for repairs. At the…

Scan156 Paris invoices and determining which company account to debit for a broken axle on chassis 41-G5.
View original record c. to Hs. X4256 EP/HS18/06.4.23. A.T. Re. Chassis 20-HP. Chassis 41-G5. Schmidt. ------------ Further to our memo' EP/Thn4/H2.3.23. we return herewith Paris Invoices Nos.16779 and 16706 which please…

Scan157 Standardisation document for a modification to the 20 HP rear axle casing.
View original record R R 76b (S H) (S R 268, 20-9-20) G 2654 X4256 STANDARDISATION of CHASSIS PARTS. Description of Parts. Modification to 20 HP. Rear Axle Casing. Origin. To improve the strength. Experimental Test…

Scan158 Axle parts for chassis 20 HP, 41-G-5, returning them to the Works and charging invoices to production.
View original record X4256 To EP/HS. from Hs/TMW. Hs/TMW1/LG13.4.23. RE. CHASSIS 20 HP, 41-G-5 - SCHMIDT. With reference to your EP/HS18/O 6.4.23. We have in the Expl: Dept: at present some of the parts belonging to the…

Scan159 Improvements to the Goshawk rear axle by making the bevel gear slightly coarser.
View original record X.4256 To BY. from R. c. to CJ. c. to BJ. c. to Wor. c. to Da. c. to E. c. to Hs. c. to EP. R7/M26.4.23. GOSHAWK REAR AXLE. We have suggested certain improvements to the central casting and cover of…

Scan160 Liability for repair costs on a 20-HP Chassis 41-G-5 following an accident.
View original record Y4256 Mr. Hives's Dept. (crossed out) c. to BY. c. to Hs. EP/Thn7/Hl.5.23 re. 20-HP Chassis 41-G-5. Schmidt. With reference to Paris Invoices Nos. 16779 and 16706, attached. These invoices have been…

Scan161 Advantages and implementation of larger pitch bevel gears for the 20HP chassis axle.
View original record R.R. 199 (250T) (S.D.676 19-7-17) MP 180865 X4256 BJ. c. WOT. c. Hs. BY1-P1.5.23. 20HP CHASSIS. RE LARGER PITCH BEVEL GEARS FOR AXLE. Referring to BJ2/H28423 and further to my previous correspondence…

Scan162 Requesting reconsideration to switch production to larger pitch bevel gears to prevent financial waste.
View original record R.R. 199 (250T) (S.D.676 19-7-17) MP 180865 BY1-P1.5.23. contd. - 2 - Would you kindly get CJ. to reconsider this question and wire us your conclusions, as we feel that to continue with the smaller…

Scan163 Delayed report on broken parts for chassis 41-G-5 and the decision not to blame the overseas agent.
View original record X4256 ? EP/Thn10/H7.5.23. Hs. BY. C. to Mr. Hall, A/C's. re 20-HP Chassis 41-G-5. Schmidt. With further reference to our memo EP/Thn7/H1.5.23 re above, we give below extract of memo we have received…

Scan164 From 'R.' discussing axle design, dynamo drive issues, and proposed future improvements for experimental models.
View original record X4256 To CJ. BJ. ) from R. Hs. Wor. ) BY. Da. ) E. EP. ) RL/M15.5.23. X.4219 X.4256. X.3522 X.4252. I think the scheme of buying machines and making all back axles bevels absolutely correct on the…

Scan165 Customer complaints regarding rear axle oil leaks and the oil filler position on a 40/50 Chassis.
View original record X3457 Hs. EP2/H29.6.23. re. 40/50 Chassis. Rear Axle. We have two complaints from an important customer, A.E. Lewis-Holloway, owner of 71-BG. They are as follows:- (1). That the drain pipes at each…

Scan166 Brake issues on the 20 HP model caused by over-oiling the back axle.
View original record To Hs. & EP. from R. c. to CJ. BJ. c. to PN. BY. +4256 R5/M16.7.23. RE. 20 HP. +4256 +4257 Mr. PN. told me that frequently the brakes on this car are spoilt by over-oiling the back axle, and suggested…

Scan167 The failure of 40/50 axle gears, specifically a 'digging in' issue on the retard side.
View original record Mr. H. Mr. Wor. Mr. Bro. Mr. Hs. Open Hilder Copy. V-3457 EP6/H.W.7.7.23. re 40/50 Axle Gears failing in customers' hands. "Digging in" We are today returning to the Works axle taken off 37-LK (Axle…

Scan168 Oil level issues and flooding in the rear axle of a 20-HP chassis.
View original record 44256 Hs. d.to BY. EP5/H23.7.23. 20-HP. CHASSIS. OIL LEVEL IN REAR AXLE. With reference to the complaint of oil flooding the rear brakes, a point which has now been dealt with by R. in his memo…

Scan169 Recent failures of 20HP rear axle bevel pinions and a request for analysis of new gear ratios.
View original record Y4256 R. [Struck through] C. CJ. C. WOP. [Struck through] C. HS. 20HP. REAR AXLE BEVELS. During the last two or three weeks we have had three failures of Rear Axle Bevel Pinions on the Dynamometer.…

Scan170 Report discussing gear strength, pinion material, production difficulties, and the performance of cars in trials.
View original record BY1-P31.10.23. contd. - 2 - gears is a sufficiently large increase to prevent recurrence of the trouble where the larger gears are fitted. The increase of strength is approximately 20%. We had no…

Scan171 Proposal for a modification to the oil filler on the rear axle to improve accessibility.
View original record STANDARDISATION of CHASSIS PARTS. COMPLETED 2.11.23. Description of Parts: OIL FILLER ON REAR AXLE. Origin: To improve accessibility. Experimental Test Report: The present filler is very inaccessible…

Scan172 Chassis gear ratios and corresponding engine revolutions for a 40/50 HP model.
View original record X.3457 40/50 HP. CHASSIS GEAR RATIOS ETC. The three back axle ratios are now - 14/52 15/52 16/52 giving ratios of - 1 : 3.714 1 : 3.467 1 : 3.250 Taking the most normal ratio 15/52, the miles per hour…

Scan173 Failure of a Goshawk bevel pinion and proposing design improvements to strengthen it.
View original record To DA. from R. c. BY. c. to CJ. HS. EP. SERIOUS AND URGENT. X4256 R2/M12.11.23. RE. GOSHAWK BEVEL PINION. X.4256. The broken pinion clearly shews that there is a nasty sharp corner due to the helical…

Scan174 The failure and subsequent dynamometer testing of a 20 HP rear axle pinion.
View original record X4256 To R. from Hs. c. to CJ. c. to Rg. c. to Da. c. to E. c. to BY. Hs4/LG13.11.23. 20 HP. REAR AXLE - X.4256. After the failure of the 20 HP. Rear Axle Pinion under normal conditions in Spain, we…

Scan175 The endurance testing of a 20 HP rear axle, proposing to extend the test from 30 to 50 hours.
View original record X4256 To R. from Hs. c. to CJ. RG. c. to DA. BY. c. to E. Hs2/LG14.11.23. 20 HP. REAR AXLE. X4256 On a 20 HP. rear axle fitted with 11/50 axle coarse teeth with the pinion made in air hardened steel,…

Scan176 The failure of a 20 HP rear axle pinion made from air-hardened steel and the plan to test standard gears.
View original record X4256 To R. from Hs. c. to CJ. c. to Rg. c. to Da. c. to BY. c. to E. __________________ Hs3/LG15.11.23. 20 HP. REAR AXLE. 4256 The 20 HP. rear axle fitted with 11/50 gears with the pinion made from…

Scan177 Requesting improvements to the 20 HP Rear Axle pinions, referencing another memo.
View original record To BY. from R. X4256 R2/M17.11.23. RE. 20 HP. REAR AXLE X.4256 Referring to memo. HS2/LG14.11.23., please put in hand five pitch, replace pinions with all improvements suggested, including air…

Scan178 Test report on a 20 HP fine pitch rear axle pinion, comparing the durability of air-hardened steel versus case-hardened steel.
View original record X4256 To R. from Hs. c.c. to CJ. c.c. to Rg. c.c. to K. c.c. to Da. c.c. to HY. 20 HP. REAR AXLE. X4256 We have tested the fine pitch rear axle pinion made from the air hardened steel. This gear…

Scan179 50-hour endurance test of a 20 HP rear axle with modified C.H.N.S. pinion gears.
View original record R.R. 493A (40 H) (EL 12 12-7-23). J.H. D. X.4256 EXPERIMENTAL REPORT Expl. No. X.4256 REF. Hsl/LG1.12.23. To R. from Hs. c. to CJ. c. to Rg. c. to E. c. to Da. c. to BY. 20 HP. REAR AXLE. We have…

Scan180 From R. to H.S. querying a design change and material selection for the 20 HP Rear Axle.
View original record X.4256. To HS. from R. 6 R1/M1.12.23. 20 HP. REAR AXLE. X.4256 Referring to Hs4/LG26.11.23., please ask if this design is the old standard, or altered to the suggestions from here - i.e. length etc.…

Scan181 On testing 20 HP rear axle pinions, comparing the wear performance of air-hardened steel versus C.H.N.S.
View original record To R. from Hs. X.4256 Hs3/T4.12.23. RE. 20 HP. REAR AXLE. X.4256. Reference R1/M.12.23. All the axle pinions so far that we have tested have been to the original dimensions as regards length of teeth…

Scan182 Difficulties of producing replacement Gleason spiral bevel gears for rear axles.
View original record Y3612 DA. c. Hs. GLEASON SPIRAL BEVEL GEARS FOR REAR AXLES. -------------------- With reference to R3/M. 10. 12. 23. in which it is suggested that we should make pinions in Air Hardening Steel to…

Scan183 Design and manufacturing of Gleason gears, focusing on tooth proportions, clearances, and cutter specifications.
View original record - 2 - Machines, also from the crown to the cone centre. The proportions of the teeth are calculated at the large end, and it is necessary to have a definite point to enable the teeth to be measured…

Scan184 Increasing gear strength by modifying circular pitch and teeth thickness, including a cross-section diagram.
View original record - 3 - instructed experimentally, using approximately the same diameter of crown wheel which would increase the circular pitch from .7854" (4 DP) to 1.855". This will have the effect of increasing the…

Scan185 Recommending the discontinuation of 16 x 52 Gleason gears for repairs, suggesting a 15 x 52 ratio replacement.
View original record X3612 Hm. from Hs. c. to EY. c. to Wor. c. to EP. Hs1/LG20.3.23. GLEASON GEARS FOR REPAIRS. As we are not now producing any 16 X 52 Gears for production, we recommend that we should stop producing…

Scan186 Specifications for the ignition, dynamo, starter motor, and battery of chassis 4-EX.
View original record X3764 28.6.23. 40/50 CHASSIS 4-EX. X.3764. This chassis is fitted with standard 40/50 ignition and wiring, except that the condenser is an X.4423 paper condenser of increased capacity. The dynamo is a…

Scan187 The testing of 20-HP axles to investigate potential failures of the bevel pinion after dynamometer and road testing.
View original record BY c. Hs. c. Wor. for SFT. X4256 EP5/H20.3.24. re. Failures of 20-HP. Axles. With a view to ascertaining whether the coarse pitch axle is likely to suffer from failure of the bevel pinion, we arranged…

Scan188 Rear axle gear failures on the 20-HP model, including details of a returned noisy axle and other test failures.
View original record Y4256 BY c. B.T. c. Hs. c. Hy. EP23/H27.3.24. 20-HP. Rear Axle Gear Failures. We have today had returned to us from Sales Dept. a new chassis which has developed a noisy axle, i.e. Axle No. 746.…

Scan189 Reassuring the Sales Department about the handling of future exceptional cases.
View original record - 2 - EP23/H27.3.24. assure Sales Department definitely that this is an exception and we are not likely to have any further trouble, or if so that they will be exceptional cases and will be dealt with…

Scan190 20-HP axle failure in chassis 85-K-7, concerning a noisy axle and failed thrust bearing.
View original record +4256 SFT. c. Hs. c. Mr. Vale. EP2/H30.5.24. re. 20-HP. Axle Failure. Chassis 85-K-7. The above chassis was returned to us recently with a complaint that the axle had developed noisy. On testing it…

Scan191 Modification to the 20-HP oil overflow stand pipe to prevent incorrect axle oil level readings.
View original record c. Hs. V4256 EP8/H14.7.24. re. 20-HP. Oil Overflow Stand Pipe. As discussed with you a few days ago, we shall be glad if you will see that the gap which you suggested, and about which you stated a…

Scan192 Investigation into oil leakage from the rear hub, caused by excessive brake usage on long descents, and a proposed solution.
View original record X3457 Hs. BY8/H. 14. 7. 24. REAR AXLE. LEAKAGE OF OIL FROM REAR HUB THROUGH THE BRAKES OR OIL DRAINS WHEN THE REAR BRAKES ARE EXCESSIVELY USED. We have had a complaint from Mr. Skinner which to our…

Scan193 Testing for oil leakage from the rear hubs and axle under high temperatures.
View original record R.R. 460A (20M) (D.A. 853 30-5-24) F.B.D. EXPERIMENTAL REPORT. Expl. No. REF: REAR AXLE. Leakage of oil from rear hubs when the rear brakes are excessively used. Test carried out on 49 G.B. re- memo…

Scan194 Comparing the quiet running and performance of 11-tooth versus 12-tooth axles on the 20-HP model.
View original record X4256 Hs. [REDACTED] EP12/H16.7.24. re. 20-HP. 11 or 12-tooth Axles. With reference to PN's memo PN3/DN/11.7.24. In replying to this memo, I would like you to point out that my own experience, which…

Scan195 Requesting a reply regarding 20 HP 11- or 12-tooth axles, considering speed and fuel consumption.
View original record Y4256 PN3/DN/17.7.24. TO Hs FROM PN 20 HP 11- or 12-tooth Axles. I shall be glad to have a reply to my PN3/DN11.7.24 as soon as possible. Your remarks should also include the consideration of speed…

Scan196 Experimental tests and recommendations for low vs. high geared axles on the 20 HP chassis.
View original record To FN. from Hs. c. to EP. Y4256 Hs3/LG18.7.24. 20 HP. CHASSIS - 11 or 12-TOOTH AXLES. All experimental endurance and reliability tests have been carried out on cars fitted with the low geared axles.…

Scan197 The axle gear ratio for the 20-HP car.
View original record c. Hs. X4256 EP/Thn4/H21.7.24. re. 20-HP. Axle Gear Ratio. We shall be glad if the question of axle gear ratio for the 20-HP car can be settled as quickly as possible. The present position is that for…

Scan198 Change from a 12-tooth to an 11-tooth axle for 20 HP cars for better performance.
View original record To H. from B.J. Copies to Wor. Hs. RM 44256 BJ16/H24.7.24. 20 H.P. AXLE RATIO. 12-tooth axles have been our standard in the past for 20 h.p. open touring cars. It has been ascertained, however, that…

Scan199 The adoption of 11-tooth versus 12-tooth axles for the 20 HP Chassis.
View original record COPY. To BJ. from Wor. Wor9/M23.7.24. Re 20 HP Chassis. 11 or 12 Tooth Axles. BJ5/H23.7.24. I now see no objection to adopting 11-tooth axles on all 20's. They are not now more difficult to make…

Scan200 Comparing low versus high geared axles for the 20 HP chassis and recommending the low geared axle as standard.
View original record To P.N. from Hs. Copy to Ep. Hs3/LG18.7.24. 20 H.P. Chassis - 11 or 12 Tooth Axles. All experimental endurance and reliability tests have been carried out on cars fitted with the low geared axles. All…

Scan201 Fitting 11 tooth pinions to the 20 HP chassis back axles.
View original record To BJ. from R. c. to CJ. PN. BY. Hs. X.4256 R1/M18.8.24. RE. 20 HP. BACK AXLE RATIOS. X.4256 In reply to your memo. BJ22/H14.8.24., since we are particularly anxious that the 20 HP. chassis shall not…

Scan202 Standardisation of chassis parts for side steering tube joint lubrication.
View original record RR 755 (10M) (SL391 2-11-23) MP 281297 H8 X4256 COMPLETED 5.11.24. STANDARDISATION of CHASSIS PARTS. Date 6.10.24. Description of Parts. SIDE STEERING TUBE JOINT LUBRICATION. Origin. To improve…

Scan203 Standardisation sheet for a modification to a steering joint's lubrication system and its mileage testing.
View original record X4265 To CJ. from Hs. Hsl/LG4.11.24. STANDARDISATION SHEET - X.4265. In our opinion, which is agreed to by BY., this modification will not prove less reliable. The design of the pieces remain as at…

Scan204 Required changes to a noisy starter motor pinion and back axle on a GOSHAWK-11 car.
View original record To HS. from R. X4256 R2/M8.12.24. 4-GOSHAWK-11. X.3597 X.4219 X.4256. This car (which is now at WW.) requires the starter motor pinion changing to the RR. pattern Bijur. The thud and noise of this…

Scan205 Noisy rear axle on 20HP Experimental Car, Chassis No. 6-G-2.
View original record O. from Hm. to BY. X4256 ? Hm6/W2.1.25. Chassis No. 6-G-2 - 20HP. Experimental Car. I noticed when I ran this car the other day that the Rear Axle had developed a bad noise. My previous recollection…

Scan206 The standardization of a thrust bearing for the 20 HP car.
View original record +4256 RHC. c. Hs. BY3/H. 21.8.25. THRUST BEARING ON 20 HP. CAR. ------------------------------ Since discussing the matter with you, when it was agreed that the present type thrust and the alternative…

Scan207 Frequent replacement and associated costs of thrust races on the 20 HP chassis.
View original record H4286 HS. BY6/H. 27.8.25. THRUST RACES. 20 HP. I have just had three more instances in which we have had to change the thrust races in repair on 20 HP. chassis. There is hardly a week passes but I…

Scan208 Back axle ratio for the Phantom, advocating for the 14 tooth axle.
View original record To HS. from R. Copy to -BJ. " -Wor. " - BY. X4299 R8/M10.6.26. PHANTOM BACK AXLE RATIO X.8310 - X.8350. With reference to the Phantom back axle ratio, rather strangely the car I had in the south of…

Scan209 Comparison of performance characteristics between 14-tooth and 15-tooth axles on early Phantom cars.
View original record To PN, from Hs. C. [illegible] Dept. X4299 HS2/LGS.7.26. Replying to PN14/DN25.6.26. X8420 The 14-tooth axles were tested on the early Phantom experimental cars. Sales ran and criticised 44-PK fitted…

Scan210 Continuation of correspondence regarding quiet 14-tooth axles and a request for a reply.
View original record -2- contd :- quiet 14-tboth axles. We have asked Wor. to send you a reply on this point. Hs.

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