| Description | Date | Identifier | |
| Technical report on engine component issues including gear rattles, oil pressure loss, and carburetter performance. | 9th Apr 1933 | Box 82 \ 1 scan0121 | |
| The performance and failures of S.U. electrical petrol pumps, the radiator, and the clutch. | 9th Apr 1933 | Box 82 \ 1 scan0122 | |
| Performance and condition of various vehicle components after mileage testing. | 9th Apr 1933 | Box 82 \ 1 scan0123 | |
| Brake wear, pedal movement issues, and problems with Rudge Whitworth road wheels. | 9th Apr 1933 | Box 82 \ 1 scan0124 | |
| The performance of hydraulic dampers, front axle components, and electrical equipment. | 9th Apr 1933 | Box 82 \ 1 scan0125 | |
| Performance and wear report on various vehicle components including distributor points, battery, plugs, and tyres. | 9th Apr 1933 | Box 82 \ 1 scan0126 | |
| Photograph of a fractured engine piston showing significant damage to the skirt and gudgeon pin boss area. | 12th Apr 1933 | Box 82 \ 1 scan0127 | |
| Broken differential on a Bentley car and plans for modifications and testing. | 12th Apr 1933 | Box 82 \ 1 scan0129 | |
| Performance of a Bentley car, specifically the gudgeon pins, brakes, and gaskets. | 12th Apr 1933 | Box 82 \ 1 scan0130 | |
| Comparing the performance of a standard Bentley with a continental Phantom at the Brooklands race track. | 12th Apr 1933 | Box 82 \ 1 scan0131 | |
| The failure of the axle differential on the Bentsport car and proposed modifications to fix the issue. | 13th Apr 1933 | Box 82 \ 1 scan0132 | |
| Responding to a report on a Bentley car after 12,000 miles, attaching a list addressing criticisms and expressing satisfaction with the car's performance in France. | 13th Apr 1933 | Box 82 \ 1 scan0133 | |
| Report titled 'BENSPORT' detailing eleven steps taken to rectify issues found during a 12,196-mile vehicle test. | 13th Apr 1933 | Box 82 \ 1 scan0134 | |
| List of technical points and proposed solutions for various car components. | 17th Jul 1933 | Box 82 \ 1 scan0135 | |
| Listing recommended spare parts for a Bentley running in France, with a note on a ribbed timing case for high oil temperature issues. | 17th Jul 1933 | Box 82 \ 1 scan0136 | |
| Copy of a memo from 'Hs' to 'Rm' detailing vehicle issues with the petrol pump and exhaust system after a trip. | 19th Jul 1933 | Box 82 \ 1 scan0137 | |
| Quieting the change speed lever and arranging a dynamometer test for vapour lock. | 20th Jul 1933 | Box 82 \ 1 scan0138 | |
| The issues found during a 3 1/2 litre Bentley test in France. | 20th Jul 1933 | Box 82 \ 1 scan0139 | |
| Vehicle faults including a loose front wing and a noisy change speed lever. | 21th Jul 1933 | Box 82 \ 1 scan0140 | |
| Issues found during the testing of a 3 1/2 litre Bentley, including problems with the exhaust, speed, and wing movement. | 21th Jul 1933 | Box 82 \ 1 scan0141 | |
| Field report on hotel stationery detailing vehicle performance metrics during a road test. | 21th Jul 1953 | Box 82 \ 1 scan0142 | |
| Troubleshooting efforts for issues found on a Bentley in France, including vapour lock and exhaust system problems. | 24th Jul 1933 | Box 82 \ 1 scan0143 | |
| Note on the development required for a new type of change speed lever. | 24th Jul 1933 | Box 82 \ 1 scan0144 | |
| Parts required to investigate exhaust system troubles in France. | 24th Jul 1933 | Box 82 \ 1 scan0145 | |
| Letter regarding the transport of parts to France for Chassis No. I B IV, and the associated customs procedures. | 25th Jul 1933 | Box 82 \ 1 scan0146 | |
| Letter regarding temporary importation of spare parts to France for Chassis No. I B IV. | 25th Jul 1933 | Box 82 \ 1 scan0147 | |
| Letter to The General Transport Co. Ltd. requesting assistance for obtaining a temporary importation permit for spare parts in France. | 25th Jul 1933 | Box 82 \ 1 scan0148 | |
| Letter to Mr. G.W. Hancock regarding issues with a petrol pump and exhaust system. | 27th Jul 1933 | Box 82 \ 1 scan0149 | |
| List of technical issues and solutions for a vehicle. | 27th Jul 1933 | Box 82 \ 1 scan0150 | |
| Short typed memo regarding the imminent arrival of Mr. Pattinson. | 27th Jul 1933 | Box 82 \ 1 scan0151 | |
| Petrol system failure due to hot weather causing the engine to stop. | 27th Jul 1933 | Box 82 \ 1 scan0152 | |
| Report detailing troubleshooting for an engine stoppage, identifying the cause as heat absorption in the fuel lines and filter. | 27th Jul 1933 | Box 82 \ 1 scan0153 | |
| Vehicle testing and adjustments, including oil and petrol consumption figures. | 28th Jul 1933 | Box 82 \ 1 scan0154 | |
| Test report on petrol boiling issues in intense heat and a note on hydraulic dampers. | 28th Jul 1933 | Box 82 \ 1 scan0155 | |
| Petrol pump failures caused by vapour lock, detailing diagnostic tests conducted on a run from Boulogne to Chateauroux. | 29th Jul 1933 | Box 82 \ 1 scan0156 | |
| Engine testing, covering petrol vapour in the filter, under-bonnet temperature, exhaust modifications, and carburetter consumption. | 29th Jul 1933 | Box 82 \ 1 scan0157 | |
| Report from France detailing car parts customs, petrol system tests, and a potential rear axle design flaw. | 31th Jul 1933 | Box 82 \ 1 scan0158 | |
| Modifications and issues with pumps, exhaust, mountings, and engine knock. | 1st Aug 1933 | Box 82 \ 1 scan0159 | |
| Typed letter discussing poor petrol consumption, carburetter performance, and sending out new gaskets. | 1st Aug 1933 | Box 82 \ 1 scan0160 | |
| Telegram about petrol pump trouble and the subsequent fitting and testing of a new pump. | 1st Jul 1933 | Box 82 \ 1 scan0161 | |
| The failure of a new petrol pump system and comparative performance tests. | 2nd Aug 1933 | Box 82 \ 1 scan0162 | |
| Performance tests on a new pump at various engine speeds, comparing it to an older model. | 2nd Aug 1933 | Box 82 \ 1 scan0163 | |
| Telegram reporting a complete failure of a petrol system and engine at high speed. | 2nd Aug 1932 | Box 82 \ 1 scan0164 | |
| Telegram from Chateauroux regarding the improved performance of pumps from 95 to 112 pints per hour. | 19th Oct 1920 | Box 82 \ 1 scan0165 | |
| Typed letter responding to a report, diagnosing car performance issues regarding maximum speed, crankshaft period, and transmission rattles. | 3rd Aug 1933 | Box 82 \ 1 scan0166 | |
| List of technical queries and feedback on various vehicle components. | 3rd Aug 1933 | Box 82 \ 1 scan0167 | |
| Communication regarding a telegram about petrol pump delivery and a request for a sketch of modified petrol piping. | 3rd Aug 1933 | Box 82 \ 1 scan0168 | |
| Pump delivery tests and issues with engine cutting out due to petrol vapour. | 3rd Aug 1933 | Box 82 \ 1 scan0169 | |
| Test results for petrol pumps with different packing washers under hot and cold conditions. | 3rd Aug 1933 | Box 82 \ 1 scan0170 | |
| Performance test data for a new pump with a .084 packing washer, tested under hot conditions. | 3rd Aug 1933 | Box 82 \ 1 scan0171 | |
| Report from Chateauroux, France, on petrol supply failure due to heat, and addressing issues with speed, consumption, crankshaft period, and transmission rattles. | 5th Aug 1933 | Box 82 \ 1 scan0172 | |
| Ongoing vehicle issues including the gear lever, suspension, brakes, and petrol tank. | 5th Aug 1933 | Box 82 \ 1 scan0173 | |
| Letter detailing the reasons for choosing electrical petrol pumps and instructions for testing. | 5th Aug 1933 | Box 82 \ 1 scan0174 | |
| Continued memorandum discussing fuel pump silencing, water temperature, and oil temperature. | 5th Aug 1933 | Box 82 \ 1 scan0175 | |
| Delays in fitting steel brake shoes and replacing leaking hot water tubes. | 6th Aug 1933 | Box 82 \ 1 scan0176 | |
| Telegram from Chateauroux reporting a broken rear axle tube. | 7th Aug 1931 | Box 82 \ 1 scan0177 | |
| Typed memo from France reporting a broken rear axle tube and a pump failure due to heat. | 7th Aug 1933 | Box 82 \ 1 scan0178 | |
| Radiator specifications, brake shoe materials, and ongoing vehicle tests. | 8th Aug 1933 | Box 82 \ 1 scan0179 | |
| Letter discussing vehicle performance in hot weather and requesting an opinion on the exhaust system. | 8th Aug 1933 | Box 82 \ 1 scan0180 | |
| The temporary importation of spare parts into France for Chassis No. I B IV. | 8th Aug 1933 | Box 82 \ 1 scan0181 | |
| Telegram, a dismantled axle, brake shoes, a water thermometer, and electrical pumps. | 8th Aug 1933 | Box 82 \ 1 scan0182 | |
| Letter concerning the receipt and fitment of S.U. petrol pumps, with comparisons to Alfa-Romeo and Bugatti systems. | 9th Aug 1933 | Box 82 \ 1 scan0183 | |
| Comparative list of temperature readings from a Mercury thermometer and a Cambridge thermometer on test rig I.B.IV. | 9th Aug 1933 | Box 82 \ 1 scan0184 | |
| Axle flange failure, exhaust cut-out, and side steering tube spring adjustments. | 9th Aug 1933 | Box 82 \ 1 scan0185 | |
| Speedometer calibration variations due to temperature and tyre pressure. | 9th Aug 1933 | Box 82 \ 1 scan0186 | |
| Progress report memo on vehicle repairs and modifications, including axle, brake, pump, and exhaust systems. | 10th Aug 1933 | Box 82 \ 1 scan0187 | |
| Modifications to the exhaust system, anchorages, and ribbon springs. | 10th Aug 1933 | Box 82 \ 1 scan0188 | |
| Letter concerning the dispatch of replacement water pipes and an improved Essex Terraplane fan to a customer in France. | 10th Aug 1933 | Box 82 \ 1 scan0189 | |
| To Mr. G.W. Hancock regarding a Side Steering Tube, sending document RR.Sch.184. | 10th Aug 1933 | Box 82 \ 1 scan0190 | |
| Attaching a copy of a sketch showing two failures reported from France. | 10th Aug 1933 | Box 82 \ 1 scan0191 | |
| Sketches of a broken radiator tank and a fatigued water pipe. | 5th Aug 1933 | Box 82 \ 1 scan0192 | |
| Telegram from Hancock inquiring about the dispatch of new tubes for a car. | 11th Aug 1933 | Box 82 \ 1 scan0193 | |
| Letter to G.W. Hancock in France regarding updates and tests on car components including axle tubes, brakes, and cooling systems. | 11th Aug 1933 | Box 82 \ 1 scan0194 | |
| Letter coordinating car testing activities and the dispatch of new components for a prototype vehicle. | 11th Aug 1933 | Box 82 \ 1 scan0195 | |
| Replacement axle tubes and testing for a 3½ Litre Bentley car in France. | 11th Aug 1933 | Box 82 \ 1 scan0196 | |
| Troubleshooting of fuel delivery issues with electrical pumps and piping during a mileage test. | 12th Aug 1933 | Box 82 \ 1 scan0197 | |
| Receiving new axle tubes and testing the performance of different petrol pumps and supply pipes. | 13th Aug 1933 | Box 82 \ 1 scan0198 | |
| From G.W.H. to Hs. reporting on vehicle repairs to the back axle, brakes, petrol pumps and windscreen. | 14th Aug 1933 | Box 82 \ 1 scan0199 | |
| Damage to a vehicle caused by a partridge strike during a road test. | 14th Aug 1933 | Box 82 \ 1 scan0200 | |
| Letter detailing modifications and tests on a car's petrol system and brakes, sent from France. | 15th Aug 1933 | Box 82 \ 1 scan0201 | |
| Typed letter reporting on car performance, including a speed of 98 MPH, and modifications to the axle, steering, and springs. | 16th Aug 1933 | Box 82 \ 1 scan0202 | |
| Report from G.W.H. to Hs. concerning a vehicle's running condition and a failed exhaust mounting from Chateauroux, France. | 17th Aug 1933 | Box 82 \ 1 scan0203 | |
| Vehicle testing results and issues with brakes, fuel pumps, and pistons from France. | 18th Aug 1933 | Box 82 \ 1 scan0204 | |
| Cracked pistons and damaged connecting rod bearings. | 18th Aug 1937 | Box 82 \ 1 scan0205 | |
| Telegram reporting a completely broken piston skirt on engine number five. | 18th Aug 1937 | Box 82 \ 1 scan0206 | |
| Telegram from Chateauroux requesting a complete set of pistons due to cracked skirts. | 18th Aug 1938 | Box 82 \ 1 scan0207 | |
| Acceleration test results for a 10x41 Axle with cut out closed. | 18th Aug 1933 | Box 82 \ 1 scan0208 | |
| Report from France detailing engine valve seating distortion, lost clearance, and a broken N.S.F. wing stay. | 19th Aug 1933 | Box 82 \ 1 scan0209 | |
| Telegram detailing a broken front balance weight stud causing a crankcase to break beyond repair. | 26th Oct 1933 | Box 82 \ 1 scan0210 | |
| Letter to G.W. Hancock concerning Autoflux pumps and an analysis of piston failures. | 22th Aug 1933 | Box 82 \ 1 scan0211 | |
| Engine water and oil temperature issues, with proposed tests and modifications. | 22th Aug 1933 | Box 82 \ 1 scan0212 | |
| The investigation of a Low Inertia Damper, focusing on friction load and spring specifications. | 22th Aug 1933 | Box 82 \ 1 scan0213 | |
| Issues and modifications for engine gear rattles, side steering, exhaust cut-out, and ignition tower. | 22th Aug 1933 | Box 82 \ 1 scan0214 | |
| The examination and modification of an exhaust mounting and other parts. | 22th Aug 1933 | Box 82 \ 1 scan0215 | |
| Letter to G.W. Hancock regarding the delivery of pistons, connecting rods, and the performance of petrol pumps. | 21th Aug 1933 | Box 82 \ 1 scan0216 | |
| Page containing two photographs showing close-up views of engine components. | 21th Aug 1933 | Box 82 \ 1 scan0217 | |
| Hand-drawn diagram of an SU petrol pump and filter assembly. | 21th Aug 1933 | Box 82 \ 1 scan0218 | |
| Hand-drawn diagrams with notes illustrating wear on a mechanical component. | 23th Aug 1933 | Box 82 \ 1 scan0219 | |
| Letter to a customer in France regarding various vehicle issues including the radiator, petrol pumps, engine knock, and spark plugs. | 23th Aug 1933 | Box 82 \ 1 scan0220 | |
| Engine modifications, fuel pump performance, and issues with damaged pistons. | 24th Aug 1933 | Box 82 \ 1 scan0221 | |
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