| Description | Date | Identifier | |
| Laboratory report on the plating deposits and polish quality of a sample Alvis hub cap. | 14th Feb 1938 | Box 137 \ 5 scan0196 | |
| Letter to Messrs. Alford & Alder (Engineers) Ltd. regarding a laboratory report on the chromium plating of an Alvis Hub Cap. | 14th Feb 1938 | Box 137 \ 5 scan0197 | |
| Letter from Alford & Alder (Engineers) Ltd regarding the quality of a sample hub cap. | 17th Feb 1938 | Box 137 \ 5 scan0198 | |
| To suspend work on gauges and tools for the Bentley III chassis. | 24th Feb 1938 | Box 137 \ 5 scan0199 | |
| New design for the Phantom III rear hub brake drum and end plate. | 21th Mar 1938 | Box 137 \ 5 scan0200 | |
| Frequent complaints of noisy hub bearings and a request to investigate the source of contamination. | 28th Mar 1938 | Box 137 \ 5 scan0201 | |
| Proposal to manage worn hub serrations by maintaining a floating stock of hubs with .005 oversize serrations. | 1st Apr 1938 | Box 137 \ 5 scan0202 | |
| The investigation of noisy hub bearings on the Phantom III. | 1st Apr 1938 | Box 137 \ 5 scan0203 | |
| Costs and practicalities of repairing worn hub serrations. | 6th Apr 1938 | Box 137 \ 5 scan0204 | |
| The process and costs for rebroaching and replacing Bentley hub serrations and brake drums. | 8th Apr 1938 | Box 137 \ 5 scan0205 | |
| Implications of fitting an over-size broached hub on a Bentley, suggesting a drawbroach as a solution. | 13th Apr 1938 | Box 137 \ 5 scan0206 | |
| The decision to proceed with tooling for Bentley III hubs. | 29th Apr 1938 | Box 137 \ 5 scan0207 | |
| Request for blueprints of a wheel disc and wheel nut for the Wraith III model for the purpose of testing and pricing. | 24th May 1938 | Box 137 \ 5 scan0208 | |
| Distribution list for blueprints of Bentley 50 Chassis parts related to the pressed steel road wheel. | 16th Jun 1938 | Box 137 \ 5 scan0209 | |
| The use of angular contact bearings on the Bentley 111 front hub. | 17th Aug 1938 | Box 137 \ 5 scan0210 | |
| New and replacement blueprints for Wraith III wheel discs and nuts. | 1st Sep 1938 | Box 137 \ 5 scan0211 | |
| Use of A/C bearings with wire wheels on the front hubs for the Bentley 111 model. | 21th Oct 1938 | Box 137 \ 5 scan0212 | |
| Letter from Fred W. Barker proposing an improvement in wheel and hub construction and requesting blueprints. | 24th Jan 1939 | Box 137 \ 5 scan0213 | |
| Letter to F.W. Baker requesting a sketch and patent specification for a proposed improvement to car hubs. | 25th Jan 1939 | Box 137 \ 5 scan0214 | |
| Letter from a wheel manufacturer regarding a design improvement for hub construction. | 27th Jan 1939 | Box 137 \ 5 scan0215 | |
| Confidential letter from an automobile wheel supplier offering a test car for inspection to demonstrate wheel durability. | 28th Jan 1939 | Box 137 \ 5 scan0216 | |
| Letter instructing Mr. S.A. Shawe to visit Rolls-Royce to discuss the principle of cushioned energy and a car's performance. | 28th Jan 1939 | Box 137 \ 5 scan0217 | |
| Letter from an automobile wheel manufacturer offering a modified hub assembly for testing. | 14th Feb 1939 | Box 137 \ 5 scan0218 | |
| Letter from the Experimental Department to F.W. Baker regarding a patent for a spring wheel. | 16th Feb 1939 | Box 137 \ 5 scan0219 | |
| Letter to Mr. F.W. Baker declining interest in his wheel patents. | 17th Feb 1939 | Box 137 \ 5 scan0220 | |
| Letter proposing a trial of a new patented wheel design on a car. | 21th Feb 1939 | Box 137 \ 5 scan0221 | |
| Patent specification for improvements in or relating to vehicle wheels. | 28th Jun 1937 | Box 137 \ 5 scan0222 | |
| Patent specification for detachably mounting a vehicle wheel on an axle or shaft. | 24th Jun 1937 | Box 137 \ 5 scan0223 | |
| Complete specification drawing for a patent, showing multiple cross-sectional views of a mechanical assembly. | 8th May 1939 | Box 137 \ 5 scan0224 | |
| Solution for grease leaking from front hubs onto the brakes. | 8th May 1939 | Box 137 \ 5 scan0225 | |
| Instruction to hold work and replace front hub bearings for a Bentley V. Chassis. | 19th May 1939 | Box 137 \ 5 scan0226 | |
| Instructions for fitting specific Hoffmann bearings to the Front Hub of a Bentley V Chassis. | 23th May 1939 | Box 137 \ 5 scan0227 | |
| Replacement of angular contact bearings with ordinary deep groove ball bearings for rationalised chassis hubs. | 23th May 1939 | Box 137 \ 5 scan0228 | |
| Parts list notification for the radio contact unit on the 'Corniche' chassis front hub, and an update to the List of Parts. | 27th Jul 1939 | Box 137 \ 5 scan0229 | |
| Alteration record for an end plate dimension due to a drawing office error. | 25th Apr 1940 | Box 137 \ 5 scan0230 | |
| Experimental production of an aluminium hub and drum for senior range motor cars. | 29th Oct 1940 | Box 137 \ 5 scan0231 | |
| Part numbers for the Front and Rear Hubs of the Bentley 6 & Corniche 60. | 13th Nov 1940 | Box 137 \ 5 scan0232 | |
| Standardisation of a diamond engine mounting incorporating new water connections. | 8th Oct 1931 | Box 138 \ 1 scan0001 | |
| The standardization of chassis parts, including fitting and cost details. | 2nd Jan 1932 | Box 138 \ 1 scan0002 | |
| Test report on improving gear rattles in the Phantom II spring drive by altering ignition and spring loads. | 2nd Jan 1932 | Box 138 \ 1 scan0003 | |
| Gear rattling issues, comparing a heavy spring driving load to the standard setting. | 2nd Jan 1932 | Box 138 \ 1 scan0004 | |
| Experiments investigating crankshaft torsional periods on the 8 Litre Bentley. | 12th Jan 1932 | Box 138 \ 1 scan0005 | |
| Crankshaft periods, dampers, and the Bentley 3 engine. | 19th Jan 1932 | Box 138 \ 1 scan0006 | |
| Crankshaft period issues, comparing them to Bentley's design and their solutions. | 21th Jan 1932 | Box 138 \ 1 scan0007 | |
| Crankshaft and Vee angle design for a 12-cylinder engine, comparing different bearing and angle configurations. | 9th Feb 1932 | Box 138 \ 1 scan0008 | |
| Calculation table for torsional vibrations in 12-cylinder Vee engines, showing coefficients for various harmonic orders and engine Vee angles. | 1st Jan 1932 | Box 138 \ 1 scan0009 | |
| Diagrams showing various arrangements of bearings and balance weights for a 12-cylinder engine. | 18th Feb 1932 | Box 138 \ 1 scan0010 | |
| On experiments to resolve overrun gear rattles on a 25HP car by fitting a friction damper. | 18th Feb 1932 | Box 138 \ 1 scan0011 | |
| Investigation into the main bearing loads for the Kestrel engine at different RPMs. | 18th Feb 1932 | Box 138 \ 1 scan0012 | |
| Two graphs showing main bearing loads versus crank angle for a Kestrel engine. | 18th Feb 1932 | Box 138 \ 1 scan0013 | |
| Two graphs comparing unbalanced and crankshaft balanced loads on a Kestrel engine's end main bearing at different power and speed settings. | 24th Feb 1932 | Box 138 \ 1 scan0014 | |
| Torsional vibrations and engine firing orders, comparing a Phantom II engine with a 60 Vee 6250 cc model. | 24th Feb 1932 | Box 138 \ 1 scan0015 | |
| On overcoming gear rattles in the 25 HP model by fitting a small friction damper. | 4th Feb 1932 | Box 138 \ 1 scan0016 | |
| The torsional vibration and performance of the J.3 crankshaft damper. | 1st Mar 1932 | Box 138 \ 1 scan0017 | |
| Comparing crankshaft torsional period details of their own engines, the Peregrine, and Alfa Romeo engines. | 15th Mar 1932 | Box 138 \ 1 scan0018 | |
| Comparative table of crankshaft details for various engines, all with balance weights. | 1st Apr 1932 | Box 138 \ 1 scan0019 | |
| Experiments with an autofriction centrifugally loaded vibration damper and spring drive. | 1st Apr 1932 | Box 138 \ 1 scan0020 | |
| Conclusions on engine vibration damping and proposing a new damper design. | 14th Apr 1932 | Box 138 \ 1 scan0021 | |
| Causes and potential solutions for transmission vibration. | 14th Apr 1932 | Box 138 \ 1 scan0022 | |
| Implications of fitting a proposed damper to various car models. | 20th Apr 1932 | Box 138 \ 1 scan0023 | |
| Four tests conducted to investigate and resolve gear rattles on a 25 HP chassis. | 20th Apr 1932 | Box 138 \ 1 scan0024 | |
| 'Test 5' detailing modifications to engine components like inertia rings and valve wedges to address gear rattle. | 20th Apr 1932 | Box 138 \ 1 scan0025 | |
| Blueprint for a 25 HP engine wedge, also known as a valve spring washer, detailing an alteration. | 30th Apr 1932 | Box 138 \ 1 scan0026 | |
| Confirming modifications to the Low Inertia Crankshaft Dampers for the 20/25 and Phantom II models. | 21th Apr 1932 | Box 138 \ 1 scan0027 | |
| Transmission vibration on the 20/25 model and proposed solutions. | 21th Apr 1932 | Box 138 \ 1 scan0028 | |
| Telegram concerning synchromesh, gearbox design, and servo systems for various models. | 2nd May 1932 | Box 138 \ 1 scan0029 | |
| Telegram about transmission vibration and arranging a meeting to clarify points. | 1st May 1932 | Box 138 \ 1 scan0030 | |
| Technical memo discussing engine and transmission vibrations, specifically crankshaft torsional swing and damping methods. | 5th May 1932 | Box 138 \ 1 scan0031 | |
| Engine reaction causing vibration and transmission rattle on the P.2 and 25HP models. | 7th May 1932 | Box 138 \ 1 scan0032 | |
| Investigation into transmission rattles and the performance of crankshaft dampers. | 7th May 1932 | Box 138 \ 1 scan0033 | |
| Responding to Mr. Hives, discussing engine tappet noise, cam form design, and valve timing. | 11th May 1932 | Box 138 \ 1 scan0034 | |
| Various engine and drivetrain component issues including temperature control, auto-adjustment, rocker shaft flex, clutch, and crankshaft dampers. | 11th May 1932 | Box 138 \ 1 scan0035 | |
| Friction materials and a proposed redesign for damper wheels, including a cross-section diagram. | 24th May 1932 | Box 138 \ 1 scan0036 | |
| Technical memorandum discussing the cause and potential solutions for transmission rattle. | 24th May 1932 | Box 138 \ 1 scan0037 | |
| Page 2 of a memo discussing the need for a friction-damped spring coupling in the transmission line. | 24th May 1932 | Box 138 \ 1 scan0038 | |
| Severity of engine vibration in 12-cylinder engines. | 24th May 1932 | Box 138 \ 1 scan0039 | |
| Sending the LeC.3091 design for a Crankshaft Damper Flywheel to be tried experimentally. | 30th May 1932 | Box 138 \ 1 scan0040 | |
| Investigation into a system for splitting crankshaft balance weights and suggesting a patent. | 30th May 1932 | Box 138 \ 1 scan0041 | |
| Proposed 25 HP torsionally flexible joint for the transmission, noting required modifications. | 1st Jun 1932 | Box 138 \ 1 scan0042 | |
| Design and experimental testing of crankshaft dampers. | 7th Jun 1932 | Box 138 \ 1 scan0043 | |
| Damper flywheel designs for the Bensport and Peregrine engines, and proposals for further testing. | 7th Jun 1932 | Box 138 \ 1 scan0044 | |
| Best surface material for crankshaft dampers and planning further testing. | 8th Jun 1932 | Box 138 \ 1 scan0045 | |
| Experiments and design considerations for crankshaft dampers, comparing dry friction and oily friction types. | 13th Jun 1932 | Box 138 \ 1 scan0046 | |
| Crankshaft dampers, including experiments, materials, and design considerations. | 18th Jun 1932 | Box 138 \ 1 scan0047 | |
| Communication regarding a scheme for experimenting with varying amounts of inertia and friction on a crankshaft damper. | 21th Jun 1932 | Box 138 \ 1 scan0048 | |
| Telegram from Royce regarding the cause and solution for a propeller vibration issue on a flexible tailshaft. | 23th Aug 1932 | Box 138 \ 1 scan0049 | |
| Design and specifications for crankshaft dampers on J.2 and Peregrine 2 engines. | 15th Nov 1932 | Box 138 \ 1 scan0050 | |
| Experiments with variable inertia crankshaft dampers. | 21th Nov 1932 | Box 138 \ 1 scan0051 | |
| Letter from Ferodo Limited regarding a new automobile panel silencing device and an enclosed booklet. | 13th Jan 1933 | Box 138 \ 1 scan0052 | |
| Noise issues and potential solutions for the 48-MS London Trials Car. | 19th Jan 1933 | Box 138 \ 1 scan0053 | |
| Letter to Ferodo Limited about arranging to spray scuttles and panels on experimental car bodies. | 19th Jan 1933 | Box 138 \ 1 scan0054 | |
| Flywheel vibrations and a proposed scheme for a tail bearing. | 28th Jan 1933 | Box 138 \ 1 scan0055 | |
| Use of asbestos spraying on car body panels for sound dampening. | 9th Feb 1933 | Box 138 \ 1 scan0056 | |
| Trial and demonstration of an asbestos-based anti-drumming compound for vehicle body panels. | 9th Feb 1933 | Box 138 \ 1 scan0057 | |
| Trial of asbestos spraying on car body panels by the Limpet company. | 17th Feb 1933 | Box 138 \ 1 scan0058 | |
| Letter from an asbestos manufacturer regarding the use of sprayed asbestos to reduce drumming in metal bodies. | 24th Feb 1933 | Box 138 \ 1 scan0059 | |
| The despatch of a Peregrine Silencer to be sprayed with asbestos. | 24th Feb 1933 | Box 138 \ 1 scan0060 | |
| Letter from J.W. Roberts Ltd. confirming receipt of a silencer to be sprayed with asbestos. | 25th Feb 1933 | Box 138 \ 1 scan0061 | |
| Demonstration and testing of 'Limpet' asbestos insulation on a car body. | 25th Feb 1933 | Box 138 \ 1 scan0062 | |
| 'Limpet' asbestos treatment for a car body to reduce booming, and the suspension of silencers. | 27th Feb 1933 | Box 138 \ 1 scan0063 | |
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