| Description | Date | Identifier | |
| Confirming that points mentioned in a previous report have been corrected on all production cars. | 8th Mar 1934 | Box 3 \ 6 06-page147 | |
| Revised list of jobs to be carried out on car 3-B-IV. | 8th Mar 1934 | Box 3 \ 6 06-page148 | |
| Confirmation of a telephone call regarding a burnt-out clutch and a request for three replacement sets. | 1st Dec 1934 | Box 3 \ 6 06-page149 | |
| Request to fit a B-4-A Unit to a car to replace a unit damaged in America. | 16th Apr 1934 | Box 3 \ 6 06-page150 | |
| Instructions to modify a B.IV engine from an American car for supercharger tests, listing existing faults and required parts. | 19th Apr 1934 | Box 3 \ 6 06-page151 | |
| Cancelling a previous instruction and requesting parts for brake experiments on a car. | 24th Apr 1934 | Box 3 \ 6 06-page152 | |
| Request to rebuild unit B.3 for chassis 4-B-IV with standard pistons and to chart the dimensions of the removed aerolite pistons for wear analysis. | 25th Apr 1934 | Box 3 \ 6 06-page153 | |
| Proposed improvements and standardisation for the next series of 3 1/2-Litre Bentley cars. | 26th Apr 1934 | Box 3 \ 6 06-page154 | |
| Mr. Rose Richards agreeing not to enter his 3½-litre Bentley in the Le Mans Contest. | 1st May 1934 | Box 3 \ 6 06-page155 | |
| Circulating reports regarding chassis B.99.AK for consideration and reply. | 2nd May 1934 | Box 3 \ 6 06-page156 | |
| Internal memorandum regarding an investigation into two separate car fires on different chassis. | 1st May 1934 | Box 3 \ 6 06-page157 | |
| Customer's car that burst into flames, detailing the incident and the suspected cause of flooding. | 30th Apr 1934 | Box 3 \ 6 06-page158 | |
| Analysis of carburetter flooding issues and potential fire risks on a Bentley Chassis. | 3rd May 1934 | Box 3 \ 6 06-page159 | |
| Typed document page mentioning the occurrence of carburetters. | 3rd May 1934 | Box 3 \ 6 06-page160 | |
| Enquiry into the cause of fires on Bentley cars, related to S.U. carburettor flooding. | 5th May 1934 | Box 3 \ 6 06-page161 | |
| Investigation into the possible sources of external ignition on a vehicle. | 5th May 1934 | Box 3 \ 6 06-page162 | |
| Modifying Bentley carburettor terminals and the float chamber drainage system to prevent flooding and sparking. | 5th May 1934 | Box 3 \ 6 06-page163 | |
| Proposing a redesign of the float chamber and mechanism for future Bentley models. | 8th May 1934 | Box 3 \ 6 06-page164 | |
| The replacement of spring wires on Bentley cars to prevent fires, using screw-on terminal nuts and washers. | 8th May 1934 | Box 3 \ 6 06-page165 | |
| Cause and prevention of fires on 3 1/2 Litre Bentley cars. | 9th May 1934 | Box 3 \ 6 06-page166 | |
| Investigation memo detailing the circumstances of a Bentley catching fire upon starting. | 9th May 1934 | Box 3 \ 6 06-page167 | |
| Suspected causes of a vehicle fire related to petrol leaks and ignition. | 9th May 1934 | Box 3 \ 6 06-page168 | |
| Modifications to prevent fires on Bentley cars by addressing loose sparking plug terminals and carburettor flooding. | 9th May 1934 | Box 3 \ 6 06-page169 | |
| Engine fires on a Bentley, proposing modifications to the float-chambers and needles. | 9th May 1934 | Box 3 \ 6 06-page170 | |
| Procedures for investigating fires on a 3 1/2-litre Bentley, specifically regarding the carburettor's flooding device. | 10th May 1934 | Box 3 \ 6 06-page171 | |
| Customer's request for a guarantee that her Bentley car will not boil if taken to the Alps. | 10th May 1934 | Box 3 \ 6 06-page172 | |
| The cooling system safety margin on a Bentley chassis for Mrs. Coatalen and a future reduction in radiator size. | 11th May 1934 | Box 3 \ 6 06-page173 | |
| Confirming an agreed policy regarding fires on the 3.5 litre Bentley. | 11th May 1934 | Box 3 \ 6 06-page174 | |
| Modifications to the carburettor and float chamber on the 3 1/2 litre Bentley to address fire risks. | 11th May 1934 | Box 3 \ 6 06-page175 | |
| Investigation into a fuel system ignition issue, detailing potential causes and proposed modifications. | 11th May 1934 | Box 3 \ 6 06-page176 | |
| Issues with an oil union and water drain tap being shaken loose, leading to loss of oil pressure. | 14th May 1934 | Box 3 \ 6 06-page177 | |
| Adding petrol pipes to the float-chamber on Bentley cars to prevent fires from fuel spillage. | 10th May 1934 | Box 3 \ 6 06-page178 | |
| Reporting on parts shaking loose on two different Bentley cars during road tests. | 16th May 1934 | Box 3 \ 6 06-page179 | |
| Requesting further details on which engine an oil pump union came loose and a water drain tap vibrated open. | 16th May 1934 | Box 3 \ 6 06-page180 | |
| Request to fit a clutch pedal operation, new front springs, and a prop shaft damper to a car. | 23th May 1934 | Box 3 \ 6 06-page181 | |
| The positioning of horns on a Bentley car. | 25th May 1934 | Box 3 \ 6 06-page182 | |
| Tests to eliminate excessive headlamp vibration on Bentley chassis models. | 25th May 1934 | Box 3 \ 6 06-page183 | |
| Efforts to brace lamp pillars and reduce movement. | 25th May 1934 | Box 3 \ 6 06-page184 | |
| Defect report on road springs for chassis No. B-29-AR. | 28th May 1934 | Box 3 \ 6 06-page185 | |
| Meeting memo discussing failures on the Bentley Car, including front axle cracking, and the decisions made to rectify them. | 29th May 1934 | Box 3 \ 6 06-page186 | |
| Front spring failures, brake jaggers, and modifications to carburetter float chambers. | 28th May 1934 | Box 3 \ 6 06-page187 | |
| Listing proposed design features and work requests for Phantom and Bentley models. | 29th May 1934 | Box 3 \ 6 06-page188 | |
| List of design features and improvements for various car models, including the Terraplane and 20/25. | 29th May 1934 | Box 3 \ 6 06-page189 | |
| Complaints about Bentley headlamp vibration and a proposed fix involving a cross member. | 31th May 1934 | Box 3 \ 6 06-page190 | |
| Work order for an engine replacement and brake alterations on a Blue Coupe. | 5th Jun 1934 | Box 3 \ 6 06-page191 | |
| Instruction to manufacture a set of lighter gauge lamp brackets for testing as an alternative. | 8th Jun 1934 | Box 3 \ 6 06-page192 | |
| Results of a Bentley engine test, identifying the piston as the weakest component and proposing further tests with improved designs. | 11th Jun 1934 | Box 3 \ 6 06-page193 | |
| Analysis of engine issues including increased oil consumption and low power output following a 60-hour endurance test. | 11th Jun 1934 | Box 3 \ 6 06-page194 | |
| The condition of a Bentley.6 engine unit after a 60-hour endurance test. | 1st Jun 1934 | Box 3 \ 6 06-page195 | |
| Condition report detailing the state of various engine components. | 1st Jun 1934 | Box 3 \ 6 06-page196 | |
| Diagrams showing failures on Bentley 6 pistons after a 60-hour endurance running test. | 5th Jun 1934 | Box 3 \ 6 06-page197 | |
| Graph plotting the oil consumption of a Bentley engine during an endurance test. | 23th May 1934 | Box 3 \ 6 06-page198 | |
| Power curve for Unit B.6 after a 53-hour endurance test, showing Brake Horsepower and Brake Mean Effective Pressure against RPM. | 23th May 1934 | Box 3 \ 6 06-page199 | |
| Photographic layout of two sets of upper half engine bearings, numbered 1 to 7 and 1 to 6. | 14th Jun 1934 | Box 3 \ 6 06-page200 | |
| Three modifications to be made to a car, specifically concerning brake levers, servo cams, and the cross steering tube. | 14th Jun 1934 | Box 3 \ 6 06-page201 | |
| Crankshaft modifications for a supercharged Bentley engine, specifically the reduction of bearings. | 16th Jun 1934 | Box 3 \ 6 06-page202 | |
| Requesting the creation of a new camshaft to improve the power output of a high output Bentley engine. | 23th Jun 1934 | Box 3 \ 6 06-page203 | |
| Blueprint diagram of a long camshaft for a Bentley. | 23th Jun 1934 | Box 3 \ 6 06-page204 | |
| List of work instructions for a Bentley III - Blue Coupe. | 22th Jun 1934 | Box 3 \ 6 06-page205 | |
| Proceeding with experimental trials for the Roller Bearing Longitudinal Transmission Shaft Joint Sch.3647. | 22th Jun 1934 | Box 3 \ 6 06-page206 | |
| Production troubles with the Bentley synchro mesh cam. | 23th Jun 1934 | Box 3 \ 6 06-page207 | |
| Request to manufacture a set of light push rods for a Bentley. | 2nd Jul 1934 | Box 3 \ 6 06-page208 | |
| Summary of a discussion on potential design improvements for a Bentley vehicle, specifically Halford tappets and rubber engine mounting. | 2nd Jul 1934 | Box 3 \ 6 06-page209 | |
| Immediate and experimental vehicle developments including chassis, engine, and braking improvements. | 2nd Jul 1934 | Box 3 \ 6 06-page210 | |
| List of experiments and improvements including supercharging, system silencing, and clutch engagement. | 2nd Jul 1934 | Box 3 \ 6 06-page211 | |
| Design and performance of a Bentley gudgeon pin plug and a decision not to alter it for production. | 2nd Jul 1934 | Box 3 \ 6 06-page212 | |
| Modifications for Bentley front wings and lamps, specifically concerning a dropped crossmember arrangement. | 7th Jul 1934 | Box 3 \ 6 06-page213 | |
| Recommendations for modifying a Bentley car to increase ground clearance for use under Colonial Conditions. | 11th Jul 1934 | Box 3 \ 6 06-page214 | |
| Parts shaking loose on a Bentley, proposing locking plates for the oil pump. | 13th Jul 1934 | Box 3 \ 6 06-page215 | |
| Fix for excessive headlamp and wing movement on the Bentley. | 17th Jul 1934 | Box 3 \ 6 06-page216 | |
| Proposed improvements to the Bentley chassis for increased rigidity and other updates. | 21th Jul 1934 | Box 3 \ 6 06-page217 | |
| Car body design in relation to wheelbase, passenger space, and wind resistance. | 21th Jul 1934 | Box 3 \ 6 06-page218 | |
| To insert a drawing number concerning a Bentley into a previous memo. | 23th Jul 1934 | Box 3 \ 6 06-page219 | |
| Request to dismantle a gearbox and a slipper wheel for inspection and examination. | 31th Jul 1934 | Box 3 \ 6 06-page220 | |
| Cause of 'front wing dither' on Bentley cars, attributing it to body rigidity rather than the wing and running board design. | 31th Aug 1934 | Box 3 \ 6 06-page221 | |
| Instructions to fit a dropped front cross member to vehicle 1-B-IV for experimental testing. | 7th Sep 1934 | Box 3 \ 6 06-page222 | |
| Notification of specification modifications regarding the fitting of Mintex LAM Servo Linings. | 13th Sep 1934 | Box 3 \ 6 06-page223 | |
| Positioning of headlamp brackets and a request for their removal on a Bentley car. | 13th Sep 1934 | Box 3 \ 6 06-page224 | |
| Experiments on a cross member to reduce Bentley wing movement and frame jellying. | 14th Sep 1934 | Box 3 \ 6 06-page225 | |
| Tribute to the 3 1/2 Litre Bentley in an 'Autocar' magazine article. | 14th Sep 1934 | Box 3 \ 6 06-page226 | |
| Outstanding work and required updates for two experimental Bentley chassis. | 20th Sep 1934 | Box 3 \ 6 06-page227 | |
| List of modifications and repairs for various car chassis, including brake relining and engine component replacements. | 20th Sep 1934 | Box 3 \ 6 06-page228 | |
| List of vehicle components and modifications with associated reference or scheme numbers. | 20th Sep 1934 | Box 3 \ 6 06-page229 | |
| Development and testing of a high-compression Bentley single cylinder head for competition work. | 20th Sep 1934 | Box 3 \ 6 06-page230 | |
| Obtaining and fitting spare pistons for a 4-B-IV engine. | 28th Sep 1934 | Box 3 \ 6 06-page231 | |
| Letter proposing a comparative performance test between a new Bugatti and a Bentley at Brooklands. | 1st Oct 1934 | Box 3 \ 6 06-page232 | |
| Letter discussing the comparative performance of a Bentley against a 3.3 Bugatti, focusing on engine compression ratios and hill climb times. | 2nd Oct 1934 | Box 3 \ 6 06-page233 | |
| The parts to be fitted to a 4-Bearing Crank Engine upon its construction. | 2nd Oct 1934 | Box 3 \ 6 06-page234 | |
| List of experimental investigation work for the Bentley & 20/25 models. | 2nd Oct 1934 | Box 3 \ 6 06-page235 | |
| List of action items and comparisons for various automotive components and systems, with assigned personnel. | 2nd Oct 1934 | Box 3 \ 6 06-page236 | |
| List of development points and responsible personnel for clutches, supercharging, and brakes. | 2nd Oct 1934 | Box 3 \ 6 06-page237 | |
| List of development points and tests for clutches, supercharging, and braking systems. | 2nd Oct 1934 | Box 3 \ 6 06-page238 | |
| List of engineering tasks related to vehicle components including engine running, steering, suspension, exhaust, and pistons. | 2nd Oct 1934 | Box 3 \ 6 06-page239 | |
| Experimental investigation work plan for the Bentley & 20/25 models, covering brakes, axle tramp, and clutches. | 2nd Oct 1934 | Box 3 \ 6 06-page240 | |
| Experimental investigation work plan for the Bentley & 20/25 model. | 2nd Oct 1934 | Box 3 \ 6 06-page241 | |
| List of proposed engine improvements and development areas, page 4. | 2nd Oct 1934 | Box 3 \ 6 06-page242 | |
| List of development points and tests for servo brakes, chassis, engine, and exhaust systems. | 2nd Oct 1934 | Box 3 \ 6 06-page243 | |
| Internal document listing engineering tasks for suspension, steering, and engine performance, with personnel assigned. | 2nd Oct 1934 | Box 3 \ 6 06-page244 | |
| Technical memorandum detailing considerations for engine silence, pistons, and supercharging. | 2nd Oct 1934 | Box 3 \ 6 06-page245 | |
| List of proposed improvements categorised by power output, weight saving, and durability/reliability. | 3rd Oct 1934 | Box 3 \ 6 06-page246 | |
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