| Description | Date | Identifier | |
| Querying design specifications for the LH Silver Phantom Chassis, specifically regarding the rear axles and brakes. | 13th Apr 1940 | Box 114 \ 1 scan0309 | |
| Index card listing components related to the rear of all cars, including shock dampers, frame, springs, and axle. | 19th Apr 1940 | Box 114 \ 1 scan0310 | |
| Design, costing, and planning for a new junior axle compared to an existing Salisbury axle. | 25th Apr 1940 | Box 114 \ 1 scan0311 | |
| Request to transport a stripped Salisbury axle to the Clan Foundry after weight analysis. | 26th Apr 1940 | Box 114 \ 1 scan0312 | |
| Questioning the use of 1% Chromium Steel for front axle yokes due to inferior mechanical properties and safety concerns. | 10th May 1940 | Box 114 \ 1 scan0313 | |
| Explaining the economic reasons for using 1% Chromium Steel for suspension yokes. | 14th May 1940 | Box 114 \ 1 scan0314 | |
| List of available axle ratios under a rationalised programme, detailing stock levels and corresponding pinion and wheel part numbers. | 17th Nov 1939 | Box 114 \ 1 scan0315 | |
| Chart of Bentley & Rationalised Axle Ratios, listing corresponding Pinion and Wheel part numbers. | 30th May 1940 | Box 114 \ 1 scan0316 | |
| Receipt of project document PL.242 for the Junior Rear Axle, to be used on the Junior Range and Rippletto. | 30th May 1940 | Box 114 \ 1 scan0317 | |
| Internal request to issue an official order to Smedley Bros. Ltd. for machining and manufacturing work already completed. | 14th Jul 1940 | Box 114 \ 1 scan0318 | |
| Sketch of the Front Axle Yokes showing differences due to altering the caster angle. | 7th Nov 1940 | Box 114 \ 1 scan0319 | |
| Letter to Gleason Works seeking clarification on conflicting pitch angle specifications for hypoid gears. | 7th Nov 1940 | Box 114 \ 1 scan0320 | |
| Table of specifications for various chassis, axles, and related components, filed under 'axles genl.'. | 13th Nov 1940 | Box 114 \ 1 scan0321 | |
| Rear axle components for the Comet & Corniche 80, specifically regarding the pitch angle. | 13th Nov 1940 | Box 114 \ 1 scan0322 | |
| Parts for the Corniche 60 rear axle, noting an unresolved issue with the bevel pinion pitch angle. | 13th Nov 1940 | Box 114 \ 1 scan0323 | |
| Inquiry to Salisbury Axle Company Ltd. regarding the supply of a modified axle and the possibility of importing others. | 1st Jan 1941 | Box 114 \ 1 scan0324 | |
| List of parts for the Rear Axle at Slack Lane. | 1st Jan 1941 | Box 114 \ 1 scan0325 | |
| Parts list showing part numbers, descriptions, quantities, and unfinished status. | 12th Dec 1940 | Box 114 \ 1 scan0326 | |
| Various rear axle arrangements and associated parts for a range of senior car models. | 12th Dec 1940 | Box 114 \ 1 scan0327 | |
| On increased bearing clearance and specific cases of cage wear and failure. | 1st Jan 1941 | Box 114 \ 1 scan0328 | |
| Production arrangements for axles, brakes, and gears on Silver Wraith, Silver Phantom, and Cresta models. | 7th Nov 1940 | Box 114 \ 1 scan0329 | |
| Memo discussing a component failure, the decision to fit a larger bearing, and issues with an axle. | 27th Dec 1940 | Box 114 \ 1 scan0330 | |
| Letter to High Duty Alloys Ltd. requesting experiments on a design problem with a duralumin tube for post-war automobiles. | 27th Dec 1940 | Box 114 \ 1 scan0331 | |
| Letter from Automotive Products Company regarding a delay, the supply of wheel cylinder castings, and an experimental car's brake system. | 27th Dec 1940 | Box 114 \ 1 scan0332 | |
| Calculation of torque for the Comet rear axle based on engine capacity and gear ratios. | 27th Dec 1940 | Box 114 \ 1 scan0333 | |
| Letter from High Duty Alloys Limited to Mr. W. A. Robotham regarding the investigation of a problem and arranging a visit. | 30th Dec 1940 | Box 114 \ 1 scan0334 | |
| Letter to Salisbury Axle Company Ltd. requesting information on the supply of a specific axle with a 4.88 to 1 ratio. | 1st Jan 1941 | Box 114 \ 1 scan0335 | |
| Letter from Hardy Spicer & Co. Limited regarding the supply and modification of an axle. | 9th Jan 1941 | Box 114 \ 1 scan0336 | |
| The concluding page of a letter from Hardy Spicer & Co. Limited, enclosing print No. HA-001-9. | 22th Jan 1941 | Box 114 \ 1 scan0337 | |
| Letter to Messrs Hardy Spicer Ltd. regarding a proposed axle modification. | 22th Jan 1941 | Box 114 \ 1 scan0338 | |
| Letter from Hardy Spicer & Co. Limited regarding their inability to convert an axle. | 28th Jan 1941 | Box 114 \ 1 scan0339 | |
| Letter to J.A. Daniell of Hardy Spicer Ltd. regarding an axle. | 30th Jan 1941 | Box 114 \ 1 scan0340 | |
| Mock-up scheme for converting a pre-loaded taper Timken bearing to a straight type roller bearing for a Senior Range rear axle. | 18th Feb 1941 | Box 114 \ 1 scan0341 | |
| Approval of a mock-up scheme for substituting a parallel roller bearing for a Timken bearing on the Senior Range Rear Axle. | 21th Feb 1941 | Box 114 \ 1 scan0342 | |
| Instructions for the conversion of a Taper to Parallel Roller for the Senior Range Rear Axle (Off side). | 10th Mar 1941 | Box 114 \ 1 scan0343 | |
| Issuing instructions to produce a rear axle for the 'Myth', converting a standard Salisbury axle. | 18th Mar 1941 | Box 114 \ 1 scan0344 | |
| Instructions for modifying a rear axle to fit Peregrine gears into a Bentley V axle. | 5th Mar 1941 | Box 114 \ 1 scan0345 | |
| Letter to Salisbury Axle Co. Ltd. requesting detail drawings for axle components. | 25th Mar 1941 | Box 114 \ 1 scan0346 | |
| Letter to Salisbury Axle Co. Ltd. requesting detailed drawings for an axle and proposing an alternative manufacturing method. | 25th Mar 1941 | Box 114 \ 1 scan0347 | |
| Axle failure on vehicle 30.G.VII and proposals for investigation. | 27th Apr 1941 | Box 114 \ 1 scan0348 | |
| Sending corrected photographs relating to gearbox failures. | 7th May 1941 | Box 114 \ 1 scan0349 | |
| Gearbox failure involving driving dogs at 300 miles and the corrected gears. | 19th Mar 1941 | Box 114 \ 1 scan0350 | |
| Photograph and details for a corrected first-speed driven gear from a specific chassis and gearbox. | 19th Mar 1941 | Box 114 \ 1 scan0351 | |
| Letter from axle manufacturer LEMPCO in Ohio, USA, regarding supply orders and potential steel shortages due to war. | 20th Apr 1941 | Box 114 \ 1 scan0352 | |
| Special bulletin listing specifications for axles used in English cars and trucks. | 28th Mar 1941 | Box 114 \ 1 scan0353 | |
| Rear axle failure, attaching a report on the failed pinion and suggesting the use of coarser pitch gears. | 6th Jun 1941 | Box 114 \ 1 scan0354 | |
| Confirmation letter to Salisbury Axle Co.Ltd. regarding the supply of a second rear axle. | 11th Aug 1941 | Box 114 \ 1 scan0355 | |
| Mileages and failures of rear axle shaft bearings for three different chassis. | 15th Feb 1944 | Box 114 \ 1 scan0356 | |
| Note on the removal of roller type bearings and refitting of original ball races to axle shafts on chassis 9.B.V. | 25th Jul 1939 | Box 114 \ 1 scan0357 | |
| Photograph showing a faulty ball race from chassis 30.G.VII after 28,275 miles. | 15th Feb 1944 | Box 114 \ 1 scan0358 | |
| The mileage and failures of rear axle shaft bearings for various chassis. | 15th Feb 1944 | Box 114 \ 1 scan0359 | |
| Note detailing the fitting and subsequent removal of roller type bearings from the axle shafts of chassis 9.B.V. | 25th Jul 1939 | Box 114 \ 1 scan0360 | |
| Photograph showing a faulty ball race from chassis 30.G.VII. | 23th Feb 1944 | Box 114 \ 1 scan0361 | |
| Rear axle shaft bearing failures, their potential causes, and proposed examinations. | 23th Feb 1944 | Box 114 \ 1 scan0362 | |
| Mileage and failures of rear axle shaft bearings on various chassis. | 15th Feb 1944 | Box 114 \ 1 scan0363 | |
| Alteration record for chassis 9.E.V. concerning axle shaft bearings. | 17th Aug 1939 | Box 114 \ 1 scan0364 | |
| The mileages and failures of rear axle shaft bearings for various chassis. | 15th Feb 1944 | Box 114 \ 1 scan0365 | |
| Note on an alteration to the axle shaft bearings for chassis 9.B.V. | 15th Feb 1944 | Box 114 \ 1 scan0366 | |
| Mileages and failures of rear axle shaft bearings for various chassis. | 15th Feb 1944 | Box 114 \ 1 scan0367 | |
| Note on the fitting and subsequent removal of roller type bearings from the axle shafts of chassis 9.B.V. | 17th Aug 1939 | Box 114 \ 1 scan0368 | |
| Photograph of a faulty ball race from Chassis 30.G.VII after 28,275 miles. | 23th Feb 1944 | Box 114 \ 1 scan0369 | |
| Rear axle shaft bearing failures, detailing history, causes, and arranging for examination and modifications. | 23th Feb 1944 | Box 114 \ 1 scan0370 | |
| Replacement bearing with increased capacity for the Bentley Pinion Thrust. | 22th Dec 1933 | Box 114 \ 2 scan0001 | |
| Request to send two new departure ball bearings for destructive testing. | 10th Jan 1934 | Box 114 \ 2 scan0002 | |
| Design improvements and proposals for a Bentley Pinion Thrust Bearing. | 11th Jan 1934 | Box 114 \ 2 scan0003 | |
| Numbered list of five points outlining potential causes of failure related to bearings and gear changing. | 11th Jan 1934 | Box 114 \ 2 scan0004 | |
| New combined ball and roller bearing design for the Bentley near axle pinion. | 12th Jan 1934 | Box 114 \ 2 scan0005 | |
| Letter to Messrs. Ransome & Marles regarding the testing of a double row bearing and arranging a future road test. | 16th Jan 1934 | Box 114 \ 2 scan0006 | |
| Inquiry to Messrs. Ransome & Marles regarding the delivery time for double row ball bearings for Demonstration Cars. | 23th Jan 1934 | Box 114 \ 2 scan0007 | |
| Letter from a bearing manufacturer confirming a lead time of 18-21 days for an order of Double Row Ball Bearings. | 26th Jan 1934 | Box 114 \ 2 scan0008 | |
| Letter to a supplier discussing bearing test results, dimensions, and further road testing. | 31th Jan 1934 | Box 114 \ 2 scan0009 | |
| Bentley Rear Axle Pinion Thrust Race failures and subsequent bearing tests. | 1st Feb 1934 | Box 114 \ 2 scan0010 | |
| Alternative Hoffman bearing scheme, noting its unsuitability as a replacement and recommending further testing. | 1st Feb 1934 | Box 114 \ 2 scan0011 | |
| Blueprint showing the arrangement of bearings in a test rig. | 1st Feb 1934 | Box 114 \ 2 scan0012 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding pinion bearings and housing diameters. | 6th Feb 1934 | Box 114 \ 2 scan0013 | |
| Letter from Ransome & Marles Bearing Co. arranging a visit to present bearing test results. | 6th Feb 1934 | Box 114 \ 2 scan0014 | |
| Request to the Order Office to purchase four replacement bearings for the Vulture back axle from Ransome & Marles. | 14th Feb 1934 | Box 114 \ 2 scan0015 | |
| Letter to Ransome & Marles Bearing Co. Ltd. requesting a specific bearing for an overloaded experimental axle. | 14th Feb 1934 | Box 114 \ 2 scan0016 | |
| Letter from Ransome & Marles Bearing Co. Ltd. about the manufacture of a modified Rear Axle Pinion Bearing (G.54444). | 17th Feb 1934 | Box 114 \ 2 scan0017 | |
| The concluding page of a letter from Ransome & Marles Bearing Co. Ltd. | 17th Feb 1934 | Box 114 \ 2 scan0018 | |
| Directive on the required hardness and treatment for components related to ball and roller bearings in gearboxes. | 19th Feb 1934 | Box 114 \ 2 scan0019 | |
| Letter to a bearing supplier regarding oil for a 100-hour test on a failed bearing cage. | 22th Feb 1934 | Box 114 \ 2 scan0020 | |
| The failure analysis of a cracked bearing cage in a Bentley rear axle pinion thrust race and subsequent testing plans. | 23th Feb 1934 | Box 114 \ 2 scan0021 | |
| Letter to Ransome & Marles Bearing Co. Ltd. requesting a comparative test between Whitmore's Oil and Wakefield's E.P. (Sulphur) Oil for steel cage bearings. | 24th Feb 1934 | Box 114 \ 2 scan0022 | |
| Letter from Ransome & Marles Bearing Co. Ltd. about testing pinion bearings using a sample of Whitmore's Oil. | 24th Feb 1934 | Box 114 \ 2 scan0023 | |
| Letter from Ransome & Marles Bearing Co. to Mr. Grylls regarding successful tests of Keenol gear lubricant. | 26th Feb 1934 | Box 114 \ 2 scan0024 | |
| Request to send Whitmore and Wakefield EP Oils to Ransome & Marles for bearing tests. | 26th Feb 1934 | Box 114 \ 2 scan0025 | |
| On the examination and replacement policy for Bentley B.7-AE big end bearings. | 1st Mar 1934 | Box 114 \ 2 scan0026 | |
| Return of unsatisfactory rear axle pinion bearings for the 3½ Litre Bentley following testing. | 26th Mar 1934 | Box 114 \ 2 scan0027 | |
| Letter from Hoffmann Manufacturing regarding an unusual temperature rise in a 3½ Litre Bentley rear axle pinion bearing. | 19th Mar 1934 | Box 114 \ 2 scan0028 | |
| Returning five Hoffmann bearings, type No. 1421, for modification before testing on a Bentley Pinion Thrust Race. | 27th Mar 1934 | Box 114 \ 2 scan0029 | |
| Despatch of 5 Hoffmann Bearings type 1421 for modification. | 28th Mar 1934 | Box 114 \ 2 scan0030 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding tests on rear axle bevel pinion bearings. | 6th Apr 1934 | Box 114 \ 2 scan0031 | |
| Report from a bearing company detailing five comparative tests on bearings under different lubrication and material conditions. | 6th Apr 1934 | Box 114 \ 2 scan0032 | |
| Report from Ransome & Marles Bearing Co. on bearing test results, specifically detailing the 'Sixth Test'. | 6th Apr 1934 | Box 114 \ 2 scan0033 | |
| Report from Ransome & Marles Bearing Co., Ltd. on the seventh test of a Hoffmann special bearing. | 6th Apr 1934 | Box 114 \ 2 scan0034 | |
| Letter to a bearing company discussing test results for rear axle pinion bearings. | 11th Apr 1934 | Box 114 \ 2 scan0035 | |
| Letter from Ransome & Marles Bearing Co. Ltd. regarding road and overload testing on rear axle pinion bearings. | 17th Apr 1934 | Box 114 \ 2 scan0036 | |
| Letter from Ransome & Marles Bearing Co. discussing bearing load tests, capacities and safety factors. | 17th Apr 1934 | Box 114 \ 2 scan0037 | |
| Alternative schemes for the Bentley rear axle pinion thrust, comparing a Ransome and Marles design with a Hoffmann scheme. | 26th Apr 1934 | Box 114 \ 2 scan0038 | |
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