| Description | Date | Identifier | |
| Performance and testing of post-war rationalised chassis designs. | 24th Nov 1942 | Box 133 \ 4 scan0298 | |
| Difficulty in locating drawings after they were contributed to a wartime salvage effort, but confirming the job is proceeding. | 2nd Nov 1943 | Box 133 \ 4 scan0299 | |
| Status of chassis and coachwork projects, and listing required specifications for various models and components. | 3rd Jan 1944 | Box 133 \ 4 scan0300 | |
| List of required designs for the Silver Ripple model, split into two stages. | 22th Dec 1943 | Box 133 \ 4 scan0301 | |
| Advertisement for Metalastik Crankshaft Dynamic Balancers fitted by Austin, Daimler & M.G. | 30th Sep 1938 | Box 133 \ 4 scan0302 | |
| Reprint from 'ENGINEERING' magazine about the bonding of rubber and metal by Metalastik, Limited. | 30th Sep 1938 | Box 133 \ 4 scan0303 | |
| Page discussing various applications of bonded rubber for vibration damping and illustrating a shearing test. | 1st Jan 1937 | Box 133 \ 4 scan0304 | |
| Preliminary leaflet from Metalastik Ltd. regarding engine mountings. | 1st Jan 1937 | Box 133 \ 4 scan0305 | |
| Promotional document for METALASTIK Ltd. describing their rubber-bonded-to-metal anti-vibration mountings. | 1st Jan 1937 | Box 133 \ 4 scan0306 | |
| Promotional document detailing various 'Metalastik' vibration-damping components for motor vehicles. | 1st Jan 1937 | Box 133 \ 4 scan0307 | |
| Product information page for METALASTIK rubber mountings, suspensions, and couplings. | 1st Jan 1937 | Box 133 \ 4 scan0308 | |
| Reprint from 'Machinery' journal describing the Metalastik process. | 29th Sep 1938 | Box 133 \ 4 scan0309 | |
| Journal reprint discussing the Metalastik process of bonding metal and rubber for vibration-absorbing applications. | 29th Sep 1938 | Box 133 \ 4 scan0310 | |
| Letter from Metalastik Ltd following up on a visit to their stand at the Motor Show and sending pamphlets. | 19th Nov 1938 | Box 133 \ 4 scan0311 | |
| Letter from Metalastik following up on engine mountings provided for testing. | 21th Nov 1938 | Box 133 \ 4 scan0312 | |
| Letter to Metalastik Ltd. requesting dimensions and rubber hardness for a body mounting. | 22th Dec 1938 | Box 133 \ 4 scan0313 | |
| Letter from Metalastik Ltd regarding rubber body mountings and arranging a meeting to show samples. | 24th Nov 1938 | Box 133 \ 4 scan0314 | |
| Letter to Metalastik Ltd. regarding experiments with engine mounts, rubber air dashpots, and rubber rings. | 25th Nov 1938 | Box 133 \ 4 scan0315 | |
| Letter to Metalastik Ltd. arranging a meeting to discuss body mountings. | 26th Nov 1938 | Box 133 \ 4 scan0316 | |
| Letter from Metalastik postponing a meeting regarding body mountings due to their General Manager's attendance at the Paris Aero Show. | 28th Nov 1938 | Box 133 \ 4 scan0317 | |
| Letter to Metalastik Ltd. postponing a visit. | 2nd Dec 1938 | Box 133 \ 4 scan0318 | |
| Letter from Metalastik Ltd. arranging a meeting to discuss crankshaft vibration dampers and dynamic balancers. | 2nd Dec 1938 | Box 133 \ 4 scan0319 | |
| Letter from Metalastik Ltd regarding a proposed visit to the works on Thursday 8th instant. | 3rd Dec 1938 | Box 133 \ 4 scan0320 | |
| Typed message to Metalastik in Leicester regarding a meeting with Goldschmidt. | 7th Dec 1938 | Box 133 \ 4 scan0321 | |
| Letter from the Experimental Department to Metalastik Ltd. arranging a meeting with Mr. Goldschmidt. | 7th Dec 1938 | Box 133 \ 4 scan0322 | |
| Letter from Metalastik Ltd concerning Body Mountings, enclosing drawings as alternatives to flat and L-type designs. | 14th Dec 1938 | Box 133 \ 4 scan0323 | |
| Letter to Metalastik Ltd. requesting the experimental production of parts with a specified rubber hardness. | 16th Dec 1938 | Box 133 \ 4 scan0324 | |
| Letter from Metalastik Ltd. confirming instructions to prepare Metalastik Body Mountings. | 19th Dec 1938 | Box 133 \ 4 scan0325 | |
| Request to order experimental body mountings from Metalastik Ltd. for Bentley V and Bentley 50 cars. | 22th Dec 1938 | Box 133 \ 4 scan0326 | |
| Tests on different body mountings to improve vehicle quietness and steering stability. | 4th May 1939 | Box 133 \ 4 scan0327 | |
| The testing and comparison of 'Metalastik' and 'Rubber insertion' body mountings. | 4th May 1939 | Box 133 \ 4 scan0328 | |
| Technical note comparing car body quietness, rumbling, and buffeting effects on models 1.B.50 and 2.B.50. | 4th May 1939 | Box 133 \ 4 scan0329 | |
| Suggesting the use of metal-spraying on exhaust pipes to prevent corrosion and increase their lifespan, proposing a trial on a Bentley. | 18th May 1939 | Box 133 \ 4 scan0330 | |
| Responding to a query about the 'Aluminising' process used on standard Bentley cars. | 24th May 1939 | Box 133 \ 4 scan0331 | |
| Letter to Metalastik Ltd. declining further tests on their body mountings as no improvement was found. | 8th Jun 1939 | Box 133 \ 4 scan0332 | |
| Recommendation for high front engine mounts based on experiments with low and raised mounting systems. | 27th Jun 1939 | Box 133 \ 4 scan0333 | |
| Request to have two sets of engine mounting parts made by Messrs. White Ltd. to fit cast iron engine units onto a B.V. chassis. | 7th Nov 1939 | Box 133 \ 4 scan0334 | |
| Fan noise and improvements to the 8-cylinder engine mounting. | 15th Dec 1939 | Box 133 \ 4 scan0335 | |
| Order for 12 rear engine mounting rubbers with specific hardness ratings. | 19th Mar 1940 | Box 133 \ 4 scan0336 | |
| On experiments with front engine mounting on the B.50 Chassis to improve performance at slow speeds. | 1st Apr 1940 | Box 133 \ 4 scan0337 | |
| Photograph showing the front of an engine with a cooling fan, belt, and pulley system. | 13th Apr 1940 | Box 133 \ 4 scan0338 | |
| Instructions for a modified front engine mounting on the Ripplet chassis. | 13th Apr 1940 | Box 133 \ 4 scan0339 | |
| Re-design of the Left Hand B.80 Front Engine Mounting. | 14th May 1940 | Box 133 \ 4 scan0340 | |
| Continuation memo regarding a fan belt, enclosing prints of PL.222 and copies of a memo. | 28th Dec 1940 | Box 133 \ 4 scan0341 | |
| Excessive B.60 engine movement and a request to increase engine control. | 28th Dec 1940 | Box 133 \ 4 scan0342 | |
| Report on vehicle tests and suggesting their replication to confirm results on production cars. | 2nd Mar 1929 | Box 133 \ 4 scan0343 | |
| Dynamometer test report for chassis number 17-G-IV. | 3rd Jun 1929 | Box 133 \ 4 scan0344 | |
| Engine valve timing, ignition timing, power curve data, compression ratio, and clearance volume. | 11th Jul 1929 | Box 133 \ 4 scan0345 | |
| Procedure for dynamometer testing, suggesting a lower torque run in first gear to prevent damage. | 10th Jun 1932 | Box 133 \ 4 scan0346 | |
| The procedure for a Phantom II dynamometer test and a proposal for a change based on recent experience. | 5th Jul 1932 | Box 133 \ 4 scan0347 | |
| Modification to the Phantom II dynamometer test for the full torque on first gear. | 7th Jul 1932 | Box 133 \ 4 scan0348 | |
| Dynamometer test report for the 'Peregrine' model. | 27th Jul 1932 | Box 133 \ 4 scan0349 | |
| Letter concerning the shaft material, design, and alignment issues for a 40 HP Dynamometer. | 13th Oct 1936 | Box 133 \ 4 scan0350 | |
| Continuation of a letter from Laurence, Scott & Electromotors, Ltd. discussing a shaft issue. | 13th Oct 1936 | Box 133 \ 4 scan0351 | |
| Requesting the fitting of newly produced 10/43 back axle gears to the Bentley Dynamometer Chassis 5.B.1V. | 28th Mar 1938 | Box 133 \ 4 scan0352 | |
| Quotation from Hopkinsons Limited for an 8-inch dial pressure gauge. | 17th Jan 1939 | Box 133 \ 4 scan0353 | |
| Letter of inquiry to Hopkinsons Ltd. regarding the supply and price of two specific pressure gauges. | 19th Jan 1939 | Box 133 \ 4 scan0354 | |
| Letter from Hopkinsons Limited regarding a quotation for 8' pressure gauges and an inability to supply a specific calibration. | 31th Jan 1939 | Box 133 \ 4 scan0355 | |
| Confirming a request for drawings for a Bentley Dynamometer Chassis. | 7th Feb 1939 | Box 133 \ 4 scan0356 | |
| Parts and drawings required for a hydraulic measuring unit for all chassis. | 17th Feb 1939 | Box 133 \ 4 scan0357 | |
| Parts and drawings for a torque measuring apparatus modification on the rear axle. | 17th Feb 1939 | Box 133 \ 4 scan0358 | |
| The order of a pressure gauge for a Bentley 11 torque measuring apparatus. | 14th Mar 1939 | Box 133 \ 4 scan0359 | |
| The peculiar behaviour of a B.60 unit on a dynamometer and standardising future horsepower curve reporting. | 24th Mar 1939 | Box 133 \ 4 scan0360 | |
| Request for a pair of dynamometer axle gears for testing under 8 cylinder torque, based on new blueprints. | 11th Aug 1939 | Box 133 \ 4 scan0361 | |
| Letter from a chartered patent agent acknowledging receipt of correspondence. | 21th Jul 1937 | Box 134 \ 1 scan0001 | |
| Letter to Dr. J.C. Morrison regarding information on valve gear and arranging a meeting. | 24th Jul 1937 | Box 134 \ 1 scan0002 | |
| Work plan for testing and modifying a Chassis S/C Unit, detailing timings, tasks, and spare parts status. | 29th Jul 1937 | Box 134 \ 1 scan0003 | |
| Letter to Dr. J. Morrison confirming a convenient date for a visit and enclosing a railway voucher. | 2nd Aug 1937 | Box 134 \ 1 scan0004 | |
| Letter to Mr. J.C. Morrison of Glasgow University regarding Bentley chassis layout prints and a humorous take on Birmingham's traffic scheme. | 9th Jul 1937 | Box 134 \ 1 scan0005 | |
| Visit to H.R. Ricardo & Co. Ltd. to discuss the correlation of single-cylinder engine results with main engines. | 12th Jul 1937 | Box 134 \ 1 scan0006 | |
| Engine testing methods, focusing on single-cylinder induction systems and valve timing issues. | 12th Jul 1937 | Box 134 \ 1 scan0007 | |
| Engine induction, valve timing, and exhaust back pressure effects on power output. | 12th Jul 1937 | Box 134 \ 1 scan0008 | |
| Engine valve timing, noise reduction, and the introduction of Venturi valve seats with a diagram. | 14th Jul 1937 | Box 134 \ 1 scan0009 | |
| Air flow tests examining the effects of masking and fairing on valve seats. | 1st Jul 1937 | Box 134 \ 1 scan0010 | |
| Page discussing tests on different valve forms and their effect on air and exhaust flow, with an accompanying diagram. | 12th Jul 1937 | Box 134 \ 1 scan0011 | |
| Work schedule for the Chassis S/C Unit, detailing tests, time allocation, and required spares. | 10th Aug 1937 | Box 134 \ 1 scan0012 | |
| Letter to Dr. J.C. Morrison providing engine specifications for standard Bentley and O.H.C. Bentley models. | 16th Aug 1937 | Box 134 \ 1 scan0013 | |
| Page two of a letter enclosing a Bentley Production arrangement drawing for an exhaust system. | 17th Aug 1937 | Box 134 \ 1 scan0014 | |
| Confirming the repair and associated charge for an Amal flowmeter Mark IX. | 17th Aug 1937 | Box 134 \ 1 scan0015 | |
| Work order detailing running times, tests to be done, and required spares for a Chassis S/C Unit. | 18th Aug 1937 | Box 134 \ 1 scan0016 | |
| Letter to Dr. J.C. Morrison acknowledging receipt of his report and recommendations for the Bentley Exhaust System. | 31th Aug 1937 | Box 134 \ 1 scan0017 | |
| Letter to Coventry Climax Engines Ltd. requesting a meeting to discuss the development of a six-in-line engine. | 2nd Sep 1937 | Box 134 \ 1 scan0018 | |
| Letter to Dr. J.C. Morrison of Glasgow University discussing engine valve lift curves and silencers. | 2nd Sep 1937 | Box 134 \ 1 scan0019 | |
| Letter to the Ethyl Export Corporation requesting more details on their research into supercharging for small displacement engines. | 3rd Sep 1937 | Box 134 \ 1 scan0020 | |
| Brief acknowledgement letter addressed to Mr. F.R. Banks at the Ethyl Export Corporation. | 7th Sep 1937 | Box 134 \ 1 scan0021 | |
| Letter to Coventry Climax Engineers Ltd. regarding the arrangement of a meeting. | 7th Sep 1937 | Box 134 \ 1 scan0022 | |
| Letter to Dr. J.C. Morrison of Glasgow University explaining a delay in providing test results. | 15th Sep 1937 | Box 134 \ 1 scan0023 | |
| Loose valve seat in a high power head, proposing a Venturi type replacement and requesting a new seat be fitted. | 22th Sep 1937 | Box 134 \ 1 scan0024 | |
| Loose inserted valve seat on a No.3 High Power Head and a request to fit a new seat. | 22th Sep 1937 | Box 134 \ 1 scan0025 | |
| Letter to Dr. J.C. Morrison discussing the results of tests on a new silencing system and proposing two schemes for interference pipes. | 5th Oct 1937 | Box 134 \ 1 scan0026 | |
| Letter discussing an interference chamber design and the logistics of obtaining a Phantom car for testing. | 5th Oct 1937 | Box 134 \ 1 scan0027 | |
| Scheme SCT.67 for modifying a standard Bentley head to use raised crown pistons. | 5th Oct 1937 | Box 134 \ 1 scan0028 | |
| Letter to Coventry Climax Engine Ltd. arranging a meeting to discuss an engine. | 5th Oct 1937 | Box 134 \ 1 scan0029 | |
| Letter discussing the initial test results of an exhaust system, focusing on its power improvement versus noise levels. | 5th Oct 1937 | Box 134 \ 1 scan0030 | |
| Letter from John C. Morrison of the University of Glasgow arranging a meeting in Derby. | 8th Oct 1937 | Box 134 \ 1 scan0031 | |
| Letter to Dr. J.C. Morrison of Glasgow University regarding the quality of previously sent information and arranging a meeting. | 8th Oct 1937 | Box 134 \ 1 scan0032 | |
| Letter to Coventry Climax Engines Ltd. regarding a meeting arrangement. | 8th Oct 1937 | Box 134 \ 1 scan0033 | |
| Program outlining the urgent jobs and modifications for a chassis single cylinder unit. | 11th Oct 1937 | Box 134 \ 1 scan0034 | |
| Outlining proposed modifications to Bentley heads, further mechanical improvements, and the status of spare parts. | 11th Oct 1937 | Box 134 \ 1 scan0035 | |
| Request to make two compression plates for a Bentley engine to vary the compression ratio. | 18th Oct 1937 | Box 134 \ 1 scan0036 | |
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