| Description | Date | Identifier | |
| Request for feedback on the reliability of a Lucas starter motor fitted to a Bentley B.50.LS. | 5th Apr 1939 | Box 88 \ 2 scan0268 | |
| Letter from Lp to Rm thanking them for arranging a car and providing a personal health update. | 5th Apr 1939 | Box 88 \ 2 scan0269 | |
| Internal memorandum regarding a car's poor performance during a press road test due to an oil-smothered servo. | 5th Apr 1939 | Box 88 \ 2 scan0270 | |
| Confirming the despatch of a car to Lillie for Mr. Hall. | 6th Apr 1939 | Box 88 \ 2 scan0271 | |
| Oil leak in the servo unit of trials car chassis B.4.MR. | 6th Apr 1939 | Box 88 \ 2 scan0272 | |
| Troubleshooting for car 4.MR, including engine tuning, servo oil leaks, and incorrect parts, with a potential defect in other 'M' series cars. | 12th Apr 1939 | Box 88 \ 2 scan0273 | |
| Investigation into a servo shaft issue on a Bentley Trials Coupé. | 12th Apr 1939 | Box 88 \ 2 scan0274 | |
| Conflicting instructions for a 'sweating' modification on a servo unit. | 15th Apr 1939 | Box 88 \ 2 scan0275 | |
| The performance of a starter motor after 15,185 miles of use. | 15th Apr 1939 | Box 88 \ 2 scan0276 | |
| Confirming a fault was due to a D.O. error and has been rectified. | 18th Apr 1939 | Box 88 \ 2 scan0277 | |
| Request for the Bentley B.50.LS car to undergo starting tests in the 'cold chamber' in Derby. | 26th Apr 1939 | Box 88 \ 2 scan0278 | |
| Request to arrange for a Bentley B.50.LS car to be brought to Derby for cold chamber starting tests. | 26th Apr 1939 | Box 88 \ 2 scan0279 | |
| Replacement of a broken interior door handle for a Bentley. | 17th May 1939 | Box 88 \ 2 scan0280 | |
| Internal request to place an order with Mulliners Ltd. for a door handle for chassis B.50.LS. | 17th May 1939 | Box 88 \ 2 scan0281 | |
| Letter from the Experimental Department to Mulliners Ltd. regarding a broken interior door handle on a B.50.LS. chassis and requesting a replacement. | 17th May 1939 | Box 88 \ 2 scan0282 | |
| Broken star spring found in the servo unit of chassis B.50-LS during a brake re-lining. | 1st Dec 1939 | Box 88 \ 2 scan0283 | |
| Report on a peculiar noise in a car during the London Trials B-V. | 31th Jul 1940 | Box 88 \ 2 scan0284 | |
| Letter confirming a telephone conversation regarding car seats for Mr Lappin, requesting tracings, and mentioning a recent air raid. | 22th Aug 1940 | Box 88 \ 2 scan0285 | |
| The London Trials of a Bentley V car, chassis B.20.AW. | 23th Jul 1940 | Box 88 \ 2 scan0286 | |
| Road test of chassis B.22.AW, including performance notes and an anecdotal passenger pickup. | 26th Apr 1940 | Box 88 \ 2 scan0287 | |
| Poor performance reports on the Bentley V trials car and the suggestion to take it off the road. | 18th Jul 1940 | Box 88 \ 2 scan0288 | |
| Confirming the preference for a 4¼ litre chassis over a 3½ litre one due to scarcity. | 30th Nov 1940 | Box 88 \ 2 scan0289 | |
| Preference for a 4¼ litre chassis over a 3½ litre one due to scarcity. | 30th Nov 1940 | Box 88 \ 2 scan0290 | |
| Difficulty of acquiring a 3.5-litre Bentley for fuel consumption testing. | 29th Nov 1940 | Box 88 \ 2 scan0291 | |
| Delay in modifications to trials car B-20-AW. | 12th Jan 1941 | Box 88 \ 2 scan0292 | |
| The arrangement for the return of Trials Car B-20-AW for delivery to Mr. Devereux. | 9th Jan 1941 | Box 88 \ 2 scan0293 | |
| Specific checks and adjustments for a customer's Bentley Trials Car. | 28th May 1941 | Box 88 \ 2 scan0294 | |
| Instructions for handing over a car, ensuring the insurance is correct and providing an abbreviated instruction book. | 20th May 1927 | Box 88 \ 2 scan0295 | |
| Weight savings and additions for a Bentley car model. | 22th Apr 1933 | Box 88 \ 3 scan0001 | |
| Weight increase of a dynamo and comparing the vehicle to competitors like Ford and Essex Terraplane. | 22th Apr 1933 | Box 88 \ 3 scan0002 | |
| The weights of different Bentley body styles. | 4th May 1933 | Box 88 \ 3 scan0003 | |
| Weight of Bentley car running-boards and the search for a lighter alternative. | 19th May 1933 | Box 88 \ 3 scan0004 | |
| Performance tests on a Bentley demonstrating the importance of weight on acceleration. | 1st Jun 1933 | Box 88 \ 3 scan0005 | |
| Potential weight-saving measures and component changes for a Bentley car. | 14th Jun 1933 | Box 88 \ 3 scan0006 | |
| List of weights for 'Bensport' components and their corresponding part numbers. | 8th May 1933 | Box 88 \ 3 scan0007 | |
| Bentley car, requesting chassis and equipment weights for coachbuilders. | 15th Jun 1933 | Box 88 \ 3 scan0008 | |
| Weight of the Bentley car chassis and body, with recommendations for coachbuilders. | 14th Jun 1933 | Box 88 \ 3 scan0009 | |
| List of individual component weights for a Park Ward Bentley Black Sports Saloon body. | 14th Jun 1933 | Box 88 \ 3 scan0010 | |
| Weight breakdown for a Hogue Drop Head Coupe (Park Ward) L.E.IV. car body and its individual components. | 14th Jun 1933 | Box 88 \ 3 scan0011 | |
| Breakdown of weights for a Park Ward Open Sports Touring Body and complete car weights for various chassis models. | 19th Jun 1933 | Box 88 \ 3 scan0012 | |
| Short memo acknowledging receipt of a previous communication regarding a Bentley Car. | 19th Jun 1933 | Box 88 \ 3 scan0013 | |
| Maximum allowable bodywork weight for the Bentley car, proposing a limit of 8 1/2 cwt. | 22th Jun 1933 | Box 88 \ 3 scan0014 | |
| Comparison of the weights of Bensport and Marles' Weller steering columns. | 2nd Jul 1933 | Box 88 \ 3 scan0015 | |
| Specification sheet for Wood-Head special lightened rear road springs, detailing component weights. | 7th Jun 1933 | Box 88 \ 3 scan0016 | |
| Comparing the weights of new and old type Peregrine steering columns and boxes. | 15th May 1933 | Box 88 \ 3 scan0017 | |
| Weight comparison between Bensport and Marles Weller steering columns. | 2nd Jul 1933 | Box 88 \ 3 scan0018 | |
| Data sheet detailing the weight of a Bentley car at the commencement of a 10,000 miles test, including component weights. | 18th Jul 1933 | Box 88 \ 3 scan0019 | |
| Request for a copy of the Schedule of Weights for the 3.5 Litre Bentley for comparison with production chassis. | 2nd Aug 1933 | Box 88 \ 3 scan0020 | |
| Complete car, body, chassis, and maximum permissible body weights for a 3 1/4 Litre Bentley prototype. | 3rd Aug 1933 | Box 88 \ 3 scan0021 | |
| Requesting particulars on complete car weight to prepare a guarantee for a Bentley chassis. | 17th Aug 1933 | Box 88 \ 3 scan0022 | |
| Requesting the individual weights of the first 15 completed Bentley cars. | 28th Aug 1933 | Box 88 \ 3 scan0023 | |
| List of front and rear weights for various 3.5 Litre Bentley chassis. | 28th Aug 1933 | Box 88 \ 3 scan0024 | |
| Weights of the Bentley 3.5 litre chassis and proposed weight limits for coachwork. | 30th Aug 1933 | Box 88 \ 3 scan0025 | |
| Letter from the Experimental Department to Jack Barclay regarding Bentley body weights. | 5th Sep 1933 | Box 88 \ 3 scan0026 | |
| Weight comparison table for Bentley car parts made from Aluminium Alloy versus Stirling Magnesium Alloy. | 2nd Oct 1933 | Box 88 \ 3 scan0027 | |
| List of weights for Bentley floorboard components for the chassis only. | 2nd Oct 1933 | Box 88 \ 3 scan0028 | |
| Analysis of body weights for the 3 1/2 Litre Bentley, comparing different coachwork designs. | 12th Oct 1933 | Box 88 \ 3 scan0029 | |
| Analysis of body weights for various 3 1/2-Litre Bentley models. | 12th Oct 1933 | Box 88 \ 3 scan0030 | |
| Experimental use of magnesium for Bentley car parts to replace aluminium. | 12th Oct 1933 | Box 88 \ 3 scan0031 | |
| Parts list detailing quantities for cylinder block and head covers. | 12th Oct 1933 | Box 88 \ 3 scan0032 | |
| Bentley weights and a proposal for a meeting about two specific body types. | 13th Oct 1933 | Box 88 \ 3 scan0033 | |
| Analysis of varying chassis and body weights for the 3½ Litre Bentley experimental and trial cars. | 12th Oct 1933 | Box 88 \ 3 scan0034 | |
| The chassis weights for the 3.5 Litre Bentley. | 16th Oct 1933 | Box 88 \ 3 scan0035 | |
| Weights of eleven Bentley cars and three experimental cars. | 10th Nov 1933 | Box 88 \ 3 scan0036 | |
| Table listing the weights of various Bentley models with different coachbuilt bodies. | 20th Apr 1934 | Box 88 \ 3 scan0037 | |
| Covering note for a chart showing the comparative weights of Bentley crankcase parts in aluminium and magnesium. | 20th Apr 1934 | Box 88 \ 3 scan0038 | |
| Weight comparison of standard aluminium and magnesium Bentley crankcases. | 16th Apr 1934 | Box 88 \ 3 scan0039 | |
| Importance of weight management in vehicle design, comparing performance and highlighting issues with heavy aftermarket fittings. | 26th Apr 1934 | Box 88 \ 3 scan0040 | |
| Weight-saving, criticising the standardisation of heavy P.100 lamps on the Bentley, and questioning responsibility for weight management. | 26th Apr 1934 | Box 88 \ 3 scan0041 | |
| Request for the weight of a radiator grille to determine potential weight savings compared to radiator shutters. | 3rd May 1934 | Box 88 \ 3 scan0042 | |
| Weight comparison of standard shutters and a new type of grill for a Bentley radiator. | 4th May 1934 | Box 88 \ 3 scan0043 | |
| Inquiring about the average weight of running boards on the latest Bentley cars. | 3rd May 1934 | Box 88 \ 3 scan0044 | |
| Request for the weights of the latest 3.5 Litre Bentley chassis for comparison with earlier models. | 3rd May 1934 | Box 88 \ 3 scan0045 | |
| Chassis weights for the 3 1/2 Litre Bentley. | 4th May 1934 | Box 88 \ 3 scan0046 | |
| Request to obtain the weight of a standard Bentley power unit ready for fitting to a chassis. | 7th May 1934 | Box 88 \ 3 scan0047 | |
| Stating the weight of a complete Bentley engine unit is 683 lbs. | 12th May 1934 | Box 88 \ 3 scan0048 | |
| Comparison of weights for different Bentley radiator models and configurations. | 1st May 1934 | Box 88 \ 3 scan0049 | |
| Comparison table detailing weight reductions for Bentley components by changing materials. | 1st May 1934 | Box 88 \ 3 scan0050 | |
| List of weights for various Bentley 5.50 x 18 tyres built on wheels. | 1st May 1934 | Box 88 \ 3 scan0051 | |
| List of weights for Bentley production parts in pounds and ounces. | 1st May 1934 | Box 88 \ 3 scan0052 | |
| List of vehicle component weights in pounds and ounces. | 28th Aug 1934 | Box 88 \ 3 scan0053 | |
| Weight analysis of the 10,000 Miles Bentley 4-B-IV, detailing component weight savings and increases. | 28th Aug 1934 | Box 88 \ 3 scan0054 | |
| Summary of the nett alteration in weight to the Bentley as a result of Standardisation Sheets issued after a 10,000 miles test. | 26th Sep 1934 | Box 88 \ 3 scan0055 | |
| Summary of weight savings and increases for a 10,000-mile Bentley 4-B-IV test car. | 22th Sep 1934 | Box 88 \ 3 scan0056 | |
| Comparison of the weights of two different Bentley radiator matrices. | 5th Oct 1934 | Box 88 \ 3 scan0057 | |
| Requesting the weighing of components for Phantom II, 20/25 HP, and Bentley chassis. | 3rd Oct 1934 | Box 88 \ 3 scan0058 | |
| Weighing non-standard chassis components to monitor and reduce overall weight. | 29th Oct 1934 | Box 88 \ 3 scan0059 | |
| Private memo comparing the weights and lap speeds of two cars, the 4.B.IV and 'Bn's Car'. | 31th Oct 1934 | Box 88 \ 3 scan0060 | |
| Weight reduction calculation for a dropped cross member between lamps. | 1st Nov 1934 | Box 88 \ 3 scan0061 | |
| Weight specifications, spring details, and buffer clearance measurements for Lp's Car (4-B-IV). | 7th Nov 1934 | Box 88 \ 3 scan0062 | |
| Chassis and body weights for various 3½ Litre Bentley models. | 8th Nov 1934 | Box 88 \ 3 scan0063 | |
| The chassis and body weights of various 3.5 Litre Bentley cars. | 8th Nov 1934 | Box 88 \ 3 scan0064 | |
| Note detailing the weight reduction of a dropped cross member. | 12th Nov 1934 | Box 88 \ 3 scan0065 | |
| Comparison of piston weights for Spectre and Bentley models. | 12th Nov 1934 | Box 88 \ 3 scan0066 | |
| Weight specification sheet detailing front, rear, and total weights in imperial units (Tons, hundredweight, quarters, pounds). | 15th Nov 1934 | Box 88 \ 3 scan0067 | |
| Requesting the weights of a list of specified Bentley parts. | 16th Nov 1934 | Box 88 \ 3 scan0068 | |
| Requesting the weights of various car body extras and components. | 19th Nov 1934 | Box 88 \ 3 scan0069 | |
| Internal request for the weight of a Peregrine steering column, box, and a lightened radiator for model 5-B-IV. | 26th Nov 1934 | Box 88 \ 3 scan0070 | |
| Request for the weights of various body modifications. | 26th Nov 1934 | Box 88 \ 3 scan0071 | |
| Excessive weight of Experimental Car 5-B-IV and the need for investigation. | 28th Nov 1934 | Box 88 \ 3 scan0072 | |
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