| Description | Date | Identifier | |
| Rattle in Bentley pedals caused by end play in a spherical bearing and a proposed solution. | 29th Jan 1934 | Box 147 \ 5 scan0215 | |
| Quotation from British Goodrich Rubber Co. for moulding rubber pads directly onto accelerator pedals. | 18th May 1934 | Box 147 \ 5 scan0216 | |
| Letter from a supplier discussing a quotation for metal pedal and stem components. | 18th May 1934 | Box 147 \ 5 scan0217 | |
| Standardisation of pedals with vulcanised rubber pads to prevent rattles. | 7th Sep 1934 | Box 147 \ 5 scan0218 | |
| Applying a spherical bearing for the pedal shaft, used on 20/25 cantilever pedals, to Bentley cantilever pedals. | 18th Jan 1935 | Box 147 \ 5 scan0219 | |
| Suggesting a spring-loaded modification for the spherical bearing on the 20/25 and Bentley cantilever pedals. | 1st Feb 1935 | Box 147 \ 5 scan0220 | |
| Modification to the 20/25 model pedals, replacing a rigid socket with a flexible spherical one. | 7th Jan 1935 | Box 147 \ 5 scan0221 | |
| Questioning the cost-effectiveness of introducing cantilever pedals on the Bentley 'E' series chassis. | 8th Feb 1935 | Box 147 \ 5 scan0222 | |
| Introducing cantilever pedals for the Bentley Chassis to enable full rubber engine mounting. | 11th Feb 1935 | Box 147 \ 5 scan0223 | |
| Allowing more room for the Bentley pedals and the driver's feet. | 13th Dec 1935 | Box 147 \ 5 scan0224 | |
| Need for more sideways room for the Bentley pedals. | 17th Dec 1935 | Box 147 \ 5 scan0225 | |
| Request for a modified operating lever for Bentley Cantilever Pedals. | 14th Jan 1936 | Box 147 \ 5 scan0226 | |
| Standardisation report on a simplified pedal return spring anchorage and oil seals on the countershaft. | 27th Nov 1936 | Box 147 \ 5 scan0227 | |
| Cost estimate for new tools related to the production of the 'L' series chassis. | 7th May 1937 | Box 147 \ 5 scan0228 | |
| Modifications and costing for Bentley Cantilever Pedals. | 7th May 1937 | Box 147 \ 5 scan0229 | |
| Requesting the preparation of cantilever pedal parts for a car to improve clutch operation. | 21th May 1937 | Box 147 \ 5 scan0230 | |
| Uncomfortable pedal position and poor visibility in the Wraith Car 25.G.V1. | 27th May 1937 | Box 147 \ 5 scan0231 | |
| The modification of clutch and brake pedals for Bentley, Phantom III, and Wraith III models. | 3rd Jun 1937 | Box 147 \ 5 scan0232 | |
| Standardisation of pedal stems and joints across Phantom III, Wraith III, and Bentley models. | 4th Jun 1937 | Box 147 \ 5 scan0233 | |
| Requesting the fitting of a gas tight pedal scheme to specific Bentley cars. | 11th Jun 1937 | Box 147 \ 5 scan0234 | |
| The anti-rattle spring for Bentley pedals being too small in diameter. | 11th Jun 1937 | Box 147 \ 5 scan0235 | |
| Blueprint for a corrugated component or bellows. | 24th Jun 1937 | Box 147 \ 5 scan0236 | |
| Modification scheme for Bentley anti-rattle pedals, including a list of required parts. | 24th Jun 1937 | Box 147 \ 5 scan0237 | |
| Correcting a drawing number for Bentley Clutch and Brake Pedals rattles. | 29th Jun 1937 | Box 147 \ 5 scan0238 | |
| Instruction to create a new stay, frame, and servo spring for the 37-LX pedals with a modified angle. | 28th Sep 1937 | Box 147 \ 5 scan0239 | |
| Instruction to fit a clutch pedal with servo spring to car 36-EX. | 28th Sep 1937 | Box 147 \ 5 scan0240 | |
| Indented clutch pedal rubber stop suggesting a harder replacement material. | 11th Oct 1937 | Box 147 \ 5 scan0241 | |
| Requesting an order for six sets of parts for L.O.P. Pedals for the Wraith III chassis. | 15th Oct 1937 | Box 147 \ 5 scan0242 | |
| Recommending the deletion of pedal adjustment on Wraith III and Bentley III cars to reduce manufacturing costs. | 2nd Dec 1937 | Box 147 \ 5 scan0243 | |
| Recommending the deletion of pedal adjustment on Wraith III and Bentley III cars to reduce manufacturing charges. | 2nd Dec 1937 | Box 147 \ 5 scan0244 | |
| Potential removal of pedal stem adjustment for Wraith III and Bentley 111 models. | 6th Dec 1937 | Box 147 \ 5 scan0245 | |
| Viability and cost-effectiveness of introducing adjustable pedals for Wraith III & Bentley III models. | 6th Dec 1937 | Box 147 \ 5 scan0246 | |
| Viability and cost-effectiveness of adjustable pedals for the Wraith III and Bentley III models. | 6th Dec 1937 | Box 147 \ 5 scan0247 | |
| Potential removal of pedal stem adjustment for Wraith III and Bentley III models. | 6th Dec 1937 | Box 147 \ 5 scan0248 | |
| Modifications to the Wraith III pedals to eliminate vibration. | 14th Dec 1937 | Box 147 \ 5 scan0249 | |
| Investigation into pedal movement issues on the Wraith car 24.G.VI due to new engine mountings. | 14th Dec 1937 | Box 147 \ 5 scan0250 | |
| Disagreeing with the proposed removal of pedal stem adjustment for the Wraith III & Bentley III models. | 15th Dec 1937 | Box 147 \ 5 scan0251 | |
| Arguing against the removal of the pedal stem adjustment for the Wraith III and Bentley III models. | 15th Dec 1937 | Box 147 \ 5 scan0252 | |
| The accelerator pedal and dash bracket scheme F.CD.309 for the Bentley 111. | 29th Dec 1937 | Box 147 \ 5 scan0253 | |
| Modified clutch operating scheme for the Wraith III model to prevent pedal movement. | 3rd Jan 1938 | Box 147 \ 5 scan0254 | |
| Modifications to the clutch pedal and operating gear for the Wraith III model. | 5th Jan 1938 | Box 147 \ 5 scan0255 | |
| Order confirmation request for a rubber pipe for a Wraith clutch pedal stop. | 3rd Feb 1938 | Box 147 \ 5 scan0256 | |
| Cost analysis of using different materials for a pedal plate carrier. | 24th Feb 1938 | Box 147 \ 5 scan0257 | |
| Modification to the clutch pedal stop for the Wraith and other models. | 24th Feb 1938 | Box 147 \ 5 scan0258 | |
| Summary of points requiring attention for the Bentley III pedal section. | 7th Mar 1938 | Box 147 \ 5 scan0259 | |
| Cost-saving suggestion for the brake pedal pull-off spring assembly. | 7th Mar 1938 | Box 147 \ 5 scan0260 | |
| Brake pedal schemes for Bentley 111 and 50 models. | 9th Apr 1938 | Box 147 \ 5 scan0261 | |
| The accelerator pedal for the Bentley 111 and SO models, referencing multiple schemes. | 12th Apr 1938 | Box 147 \ 5 scan0262 | |
| Scheme for a sheet aluminium Pedal Gap Plate for Bentley 111 and 50 models. | 12th Apr 1938 | Box 147 \ 5 scan0263 | |
| New dimensions for setting the clutch pedal on the Phantom III. | 23th Apr 1938 | Box 147 \ 5 scan0264 | |
| Proposal to modify the Wraith III accelerator pedal stop due to it being unsatisfactory. | 21th May 1938 | Box 147 \ 5 scan0265 | |
| Laborious operation of brake pedals and suggesting design modifications for various models. | 16th Jun 1938 | Box 147 \ 5 scan0266 | |
| Adjustments to pedal reach and the braking system on the Wraith model. | 16th Jun 1938 | Box 147 \ 5 scan0267 | |
| Scheme for a modified brake pedal lever on Bentley 3, 50, and Wraith 80 models to increase spacing from the accelerator. | 17th Aug 1938 | Box 147 \ 5 scan0268 | |
| B.III & 50 Accelerator Pedal, with a cross-reference to another file. | 27th Oct 1938 | Box 147 \ 5 scan0269 | |
| The deletion of the bottom pinch bolt on the B.III & 50 accelerator pedal for cost and time savings. | 27th Oct 1938 | Box 147 \ 5 scan0270 | |
| Modifications and improvements for the pedal mechanism on Wraith and Bentley V models. | 1st Dec 1938 | Box 147 \ 5 scan0271 | |
| The failure of moulded pedal gap plates for the Wraith model, recommending a switch to aluminium plates. | 17th Mar 1939 | Box 147 \ 5 scan0272 | |
| Fitting and failure of moulded gap plates for the Wraith model. | 22th Mar 1939 | Box 147 \ 5 scan0273 | |
| Cost comparison for the Wraith Pedal Gap Plate between Aluminium and Bakelite. | 18th Apr 1939 | Box 147 \ 5 scan0274 | |
| The development and testing of toughened Bakelite gap plates for the Wraith model. | 21th Apr 1939 | Box 147 \ 5 scan0275 | |
| The introduction of Bakelite gap plates for floorboards. | 25th Apr 1939 | Box 147 \ 5 scan0276 | |
| Production of Bakelite Gap Plates for the Wraith model, including new drawing numbers and loaning drill jigs. | 25th Apr 1939 | Box 147 \ 5 scan0277 | |
| Issues with vulcanized pedal rubbers and proposing a new, simpler design. | 9th Jun 1939 | Box 147 \ 5 scan0278 | |
| Requesting the deletion of parts from the List of Parts for the Bentley V Production brake pedal. | 16th Jun 1939 | Box 147 \ 5 scan0279 | |
| Design of a new detachable rubber pedal pad for Bentley cars, suggesting the use of Chrysler cement for fixing. | 21th Jun 1939 | Box 147 \ 5 scan0280 | |
| Request for experimental detachable rubber for brake and clutch pedals. | 27th Jun 1939 | Box 147 \ 5 scan0281 | |
| Instruction for altering the clutch pedal pressure by fitting a plate and a pull-off spring. | 19th Aug 1939 | Box 147 \ 5 scan0282 | |
| The design of an 'Organ type' accelerator pedal for left-hand drive Senior Range cars. | 4th Mar 1940 | Box 147 \ 5 scan0283 | |
| List of parts related to the M.40 Test Rig, specifically for the pedals section. | 27th Jun 1941 | Box 147 \ 5 scan0284 | |
| List of parts and instructions for accelerator pedal and clutch/brake components. | 27th Jun 1941 | Box 147 \ 5 scan0285 | |
| Letter from The Light Production Co. Ltd. regarding a manufacturing error on experimental pistons EXS 928. | 4th Nov 1938 | Box 148 \ 1 scan0001 | |
| Page 2 of a letter from The Light Production Co. Ltd. regarding the supply of correct pistons. | 10th Nov 1938 | Box 148 \ 1 scan0002 | |
| The order of piston rings from Wellworthy Piston Rings Ltd. | 10th Nov 1938 | Box 148 \ 1 scan0003 | |
| Request to Wellworthy Piston Rings Ltd. for the production and supply of various piston rings. | 10th Nov 1938 | Box 148 \ 1 scan0004 | |
| Order for pistons from The Light Production Co. Ltd. | 11th Nov 1938 | Box 148 \ 1 scan0005 | |
| Request to The Light Production Co. Ltd. to produce 28 pistons to two different specifications. | 11th Nov 1938 | Box 148 \ 1 scan0006 | |
| Letter from The Light Production Co. Ltd. regarding the production of 14 pistons and a query about a sample oxide surface treatment for piston rings. | 14th Nov 1938 | Box 148 \ 1 scan0007 | |
| Letter from Wellworthy Piston Rings confirming prices and delivery for various rings. | 17th Nov 1938 | Box 148 \ 1 scan0008 | |
| Modifications to the Wraith piston due to issues with carbon build-up and grinding. | 22th Nov 1938 | Box 148 \ 1 scan0009 | |
| Request to The Light Production Co. Ltd. for 14 modified Aerolite pistons with a .440 raised crown for further experimentation. | 25th Nov 1938 | Box 148 \ 1 scan0010 | |
| Request to send an order for different types of pistons to The Light Production Co.Ltd. | 26th Nov 1938 | Box 148 \ 1 scan0011 | |
| Letter from the Experimental Department requesting modified 'Aerolite' pistons for ongoing experiments. | 26th Nov 1938 | Box 148 \ 1 scan0012 | |
| Letter to The Light Production Co. Ltd. clarifying details for an order of pistons and providing drawings. | 29th Nov 1938 | Box 148 \ 1 scan0013 | |
| Enquiry to The Light Production Co. Ltd. about the availability of dies for special pistons used in E.R. Hall's T.T. Bentley. | 30th Nov 1938 | Box 148 \ 1 scan0014 | |
| Letter to The Light Production Co. Ltd. regarding modifications to raised crown pistons. | 1st Dec 1938 | Box 148 \ 1 scan0015 | |
| Letter to Light Production Co. Ltd. requesting prints of modified detail drawings for pistons. | 1st Dec 1938 | Box 148 \ 1 scan0016 | |
| Modifications to piston dimensions to align with 'Aerolite' pistons. | 2nd Dec 1938 | Box 148 \ 1 scan0017 | |
| Letter confirming the availability of foundry equipment and supplies of Aerolite Pistons for the T.T. Bentley 4 1/4 litre engine. | 2nd Dec 1938 | Box 148 \ 1 scan0018 | |
| Letter from The Light Production Co. Ltd. regarding modifications to Aerolite Pistons and corebox dimensions. | 2nd Dec 1938 | Box 148 \ 1 scan0019 | |
| Correspondence from The Light Production Co. Ltd. regarding modifications to piston castings. | 3rd Dec 1938 | Box 148 \ 1 scan0020 | |
| Letter from the Experimental Department to a supplier regarding modifications to piston crown dimensions. | 3rd Dec 1938 | Box 148 \ 1 scan0021 | |
| Letter from The Light Production Co. Ltd. regarding the machining and production of pistons. | 6th Dec 1938 | Box 148 \ 1 scan0022 | |
| The Bentley III High Compression Split Piston. | 8th Dec 1938 | Box 148 \ 1 scan0023 | |
| Letter to Automotive Engineering Co. Ltd. regarding tests on heat distribution in pistons. | 8th Dec 1938 | Box 148 \ 1 scan0024 | |
| Letter regarding foundry equipment for T.T. Bentley pistons and ordering Ferrox treated rings. | 12th Dec 1938 | Box 148 \ 1 scan0025 | |
| Letter to Light Production Co.Ltd. requesting an approximate delivery date for raised crown pistons for testing. | 12th Dec 1938 | Box 148 \ 1 scan0026 | |
| Letter from The Light Production Co. Ltd. regarding the naming of 'Cellex' and 'Cellotin' piston ring treatments and confirming order details. | 14th Dec 1938 | Box 148 \ 1 scan0027 | |
| Letter from The Light Production Co. Ltd. concerning orders for right and left hand crowns and raised crown pistons. | 17th Dec 1938 | Box 148 \ 1 scan0028 | |
| Order for seven modified Aerolite pistons from Light Production Co. Ltd. | 17th Dec 1938 | Box 148 \ 1 scan0029 | |
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