| Description | Date | Identifier | |
| Calculation for predicted speed and a note indicating it is a preliminary report. | 30th Jul 1934 | Box 155 \ 1 scan0153 | |
| Track test report for Hall's Car (B-35-AE), detailing speed and performance under various configurations. | 30th Jul 1934 | Box 155 \ 1 scan0154 | |
| Summary of development work on engine cam forms and followers, noting the performance gains were not worth the risk of valve spring failure. | 30th Jul 1934 | Box 155 \ 1 scan0155 | |
| Performance graph plotting RPM against MPH for different gears and two different tyre sizes. | 8th Aug 1934 | Box 155 \ 1 scan0156 | |
| Prepaid telegram enquiring about the availability of the track for tests. | 8th Aug 1934 | Box 155 \ 1 scan0157 | |
| Post office telegram confirming track availability from Bradley to Robotham Boycar. | 8th Aug 1934 | Box 155 \ 1 scan0158 | |
| Shock absorber tests at Brooklands comparing Hartford dampers on a Phantom and Bentley. | 9th Aug 1934 | Box 155 \ 1 scan0159 | |
| Telegram requesting track availability for tests at Weybridge. | 3rd Sep 1934 | Box 155 \ 1 scan0160 | |
| Test report comparing the lap and half-mile speeds of a 22-EX prototype and a Cadillac at Brooklands race track. | 10th Aug 1934 | Box 155 \ 1 scan0161 | |
| Test results for car 2-B-4 at Brooklands after fitting new Aerolite pistons. | 12th Sep 1934 | Box 155 \ 1 scan0162 | |
| Comparative speed test report for cars 18-G-IV and 20-G-IV at Brooklands track. | 19th Sep 1934 | Box 155 \ 1 scan0163 | |
| The availability of the Weybridge track. | 12th Oct 1934 | Box 155 \ 1 scan0164 | |
| Report of a test on a Bentley Small Bore Induction Pipe (EX.14528) to determine its effect on the car's maximum speed. | 24th Oct 1934 | Box 155 \ 1 scan0165 | |
| Further tests on Bentley radiators at Brooklands. | 1st Nov 1934 | Box 155 \ 1 scan0166 | |
| Summary of cooling tests and proposals for radiator matrix and fan configurations on a Bentley car. | 24th Oct 1934 | Box 155 \ 1 scan0167 | |
| Performance graph comparing two Bentley Marston Mark V radiator matrices of varying depths (70mm & 58mm). | 24th Oct 1934 | Box 155 \ 1 scan0168 | |
| Graph comparing the performance of two similar 58mm Marston Mark V radiator matrices for a Bentley. | 24th Oct 1934 | Box 155 \ 1 scan0169 | |
| Graph comparing carburettor air intake temperatures for Bentley radiators with shutter control versus thermostatic by-pass control. | 24th Oct 1934 | Box 155 \ 1 scan0170 | |
| Graph determining the permissible area reduction for a Bentley Marston Mark V radiator matrix to achieve equal cooling to a standard Mark III matrix. | 24th Oct 1934 | Box 155 \ 1 scan0171 | |
| Graph comparing cooling performance and speeds obtained with three different types of Bentley fans. | 24th Oct 1934 | Box 155 \ 1 scan0172 | |
| Speed tests of different Bentley models at Brooklands in 1934 and 1935. | 25th Apr 1935 | Box 155 \ 1 scan0173 | |
| Lap speeds and performance data for a car with a high compression head and Aerolite pistons, tested at Brooklands. | 1st May 1935 | Box 155 \ 1 scan0174 | |
| Performance test report from Brooklands detailing lap speeds, flying half mile, and damper readings. | 15th May 1935 | Box 155 \ 1 scan0175 | |
| The performance and testing of a car fitted with a High Compression Head on Brooklands Track. | 15th May 1935 | Box 155 \ 1 scan0176 | |
| Letter to Brooklands Automobile Racing Club requesting track availability for testing. | 4th Jul 1935 | Box 155 \ 1 scan0177 | |
| Letter to the Clerk of the Course at Brooklands Automobile Racing Club requesting track admission. | 8th Jul 1935 | Box 155 \ 1 scan0178 | |
| Confirming a book of tickets for use at Brooklands is being obtained. | 9th Jul 1935 | Box 155 \ 1 scan0179 | |
| Telex message instructing a representative to telephone the Experimental Department immediately upon receipt. | 10th Jul 1935 | Box 155 \ 1 scan0180 | |
| Short note confirming the enclosure of a book of Brooklands Tickets. | 11th Jul 1935 | Box 155 \ 1 scan0181 | |
| Letter to the Brooklands Automobile Racing Club enclosing a track ticket. | 11th Jul 1935 | Box 155 \ 1 scan0182 | |
| Visit to Brooklands to test a Spectre 2 against a Buick, detailing lap times and a subsequent engine failure. | 19th Jul 1935 | Box 155 \ 1 scan0183 | |
| Test report on a new type Bentley oil filler and breather, tested on car B-23-AE at Brooklands. | 19th Jul 1935 | Box 155 \ 1 scan0184 | |
| Letter to the Clerk of the Course at Brooklands requesting to test a car on the track. | 7th Aug 1935 | Box 155 \ 1 scan0185 | |
| Performance test results from Brooklands for E.R. Hall's Car (B-35-AE) with various settings for mixture, ignition, and aerodynamics. | 9th Aug 1935 | Box 155 \ 1 scan0186 | |
| Lap speeds and tyre configurations during track testing. | 9th Aug 1935 | Box 155 \ 1 scan0187 | |
| Performance tests conducted at Brooklands, comparing various car configurations. | 9th Aug 1935 | Box 155 \ 1 scan0188 | |
| Performance test results for the Original Big Bore Unit in a Bentley I. | 21th Sep 1935 | Box 155 \ 1 scan0189 | |
| Telegram regarding the closure of the experimental Hancock track for repairs. | 23th Sep 1935 | Box 155 \ 1 scan0190 | |
| Letter to the Brooklands Automobile Racing Club regarding track availability for tests. | 25th Sep 1935 | Box 155 \ 1 scan0191 | |
| Performance test results and carburettor settings for vehicle 18-G-IV at Brooklands. | 9th Nov 1935 | Box 155 \ 1 scan0192 | |
| Performance timings for a Spectre II and a Buick at the Brooklands circuit. | 18th Jul 1935 | Box 155 \ 1 scan0193 | |
| Letter to the Clerk of the Course at Brooklands Motor Course enclosing a track ticket for an aerodynamic car. | 26th Mar 1936 | Box 155 \ 1 scan0194 | |
| Performance test results for Chassis No. 22 G.V. at Brooklands, detailing lap times, acceleration data, and engine notes under windy conditions. | 31th Mar 1936 | Box 155 \ 1 scan0195 | |
| Radiator tests at Brooklands for Chassis No. 22 G V. | 31th Mar 1936 | Box 155 \ 1 scan0196 | |
| Radiator performance tests on Chassis No. 22 G V, recording water temperatures under various conditions. | 31th May 1936 | Box 155 \ 1 scan0197 | |
| Radiator tests conducted at Brooklands for Chassis No. 22 G.V., comparing temperatures with and without a spring fitted. | 31th Mar 1936 | Box 155 \ 1 scan0198 | |
| Radiator temperature test results for Chassis No. 22-C-V at Brooklands. | 31th Mar 1936 | Box 155 \ 1 scan0199 | |
| Radiator tests with a spring-fitted thermostat, comparing performance with an empty versus nearly full header tank. | 31th Mar 1936 | Box 155 \ 1 scan0200 | |
| Engine and radiator temperature tests at 30 m.p.h. under varying conditions. | 31th Mar 1936 | Box 155 \ 1 scan0201 | |
| Engine cooling performance, mentioning local boiling and continued testing with a spring removed. | 31th Mar 1936 | Box 155 \ 1 scan0202 | |
| Engine performance with observations on temperature and local boiling. | 2nd Apr 1936 | Box 155 \ 1 scan0203 | |
| Performance test results for cars 6-B-IV and 3-B-IV at Brooklands, detailing times and speeds with different engine configurations. | 2nd Apr 1936 | Box 155 \ 1 scan0204 | |
| The performance and issues of car 32-EX during a trip to Brooklands. | 2nd Apr 1936 | Box 155 \ 1 scan0205 | |
| Slow running tests comparing engine vibrations with different carburetter and induction pipe setups. | 6th Apr 1936 | Box 155 \ 1 scan0206 | |
| Page detailing acceleration test results and conclusions for different carburetor and induction pipe combinations. | 6th Apr 1936 | Box 155 \ 1 scan0207 | |
| List of engine settings comparing different ignition timings, RPMs, pipe sizes, and carburettor types. | 6th Apr 1936 | Box 155 \ 1 scan0208 | |
| Tests carried out on the Phantom III to resolve petrol starvation at high speeds. | 6th Apr 1936 | Box 155 \ 1 scan0209 | |
| Petrol starvation tests for a Phantom III (36-KX) with a Stromberg carburettor at Brooklands. | 6th Apr 1936 | Box 155 \ 1 scan0210 | |
| Page 2 of a test report detailing carburettor performance, speed trials, and fuel/oil consumption. | 6th Apr 1936 | Box 155 \ 1 scan0211 | |
| Car performance issues including top gear, clutch, and crankcase breather faults. | 6th Apr 1936 | Box 155 \ 1 scan0212 | |
| Expressing disappointment with the incomplete testing of large and small carburetters at Brooklands. | 6th Apr 1936 | Box 155 \ 1 scan0213 | |
| Test run of the Dubonnet car at Brooklands, focusing on its layout, road holding, and the effects of streamlining. | 6th Apr 1936 | Box 155 \ 1 scan0214 | |
| Benefits of vehicle streamlining and proposing wind tunnel work. | 6th Apr 1936 | Box 155 \ 1 scan0215 | |
| Table comparing the horsepower required and acceleration improvement of a Bentley versus a streamlined Dubonnet car. | 6th Apr 1936 | Box 155 \ 1 scan0216 | |
| Visit to Brooklands detailing fuel consumption tests and lap times. | 1st May 1936 | Box 155 \ 1 scan0217 | |
| Performance test results with large carburetters and induction pipe, noting lap times and speeds. | 21th May 1936 | Box 155 \ 1 scan0218 | |
| Telegram from Robotham inquiring about track availability for tests at Weybridge the following week. | 21th May 1936 | Box 155 \ 1 scan0219 | |
| Telegram confirming the availability of a track for specific time slots. | 12th May 1936 | Box 155 \ 1 scan0220 | |
| Request to arrange for a radiator matrix unit change on a Phantom III car, 33-EX, at Cricklewood. | 22th May 1936 | Box 155 \ 1 scan0221 | |
| Performance and consumption test report from a visit to Brooklands, comparing small and large carburetters. | 28th May 1936 | Box 155 \ 1 scan0222 | |
| Report comparing vehicle performance with small and large carburetters and induction pipes, including lap times and speeds. | 28th May 1936 | Box 155 \ 1 scan0223 | |
| Request to modify carburetter parts for car 33-EX before it goes to Brooklands. | 22th May 1936 | Box 155 \ 1 scan0224 | |
| Note confirming an appointment for a Phantom III, chassis 33-EX, to have its radiator changed. | 25th May 1936 | Box 155 \ 1 scan0225 | |
| Visit to Brooklands for comparison tests between small and large carburettors and induction pipes. | 28th May 1936 | Box 155 \ 1 scan0226 | |
| Performance test results comparing small and large carburetters and induction pipes. | 28th May 1936 | Box 155 \ 1 scan0227 | |
| Cooling system performance and overheating issues of the Phantom III in comparison to the Phantom II. | 10th Jun 1936 | Box 155 \ 1 scan0228 | |
| Radiator, fan, and bonnet cooling tests conducted at Brooklands. | 10th Jun 1936 | Box 155 \ 1 scan0229 | |
| Summary and conclusion of cooling tests for the Phantom III car, proposing improvements such as a new radiator matrix, louvred bonnets, and a flexible fan. | 10th Jun 1936 | Box 155 \ 1 scan0230 | |
| Remedying cooling differences at low speeds between Phantom models by using a more effective fan. | 10th Jun 1936 | Box 155 \ 1 scan0231 | |
| Summary of radiator test results conducted at Brooklands. | 19th May 1931 | Box 155 \ 1 scan0232 | |
| Table of critical air temperature figures for a Phantom II car under different speed conditions. | 19th May 1931 | Box 155 \ 1 scan0233 | |
| Comparative graph of Brake Horsepower vs. road speed for Phantom I and Phantom II engines. | 16th Jun 1936 | Box 155 \ 1 scan0234 | |
| Telegram inquiring about the availability of a track for Thursday or Friday of the current week. | 16th Jun 1936 | Box 155 \ 1 scan0235 | |
| The cooling tests of a Cadillac V-16 car, comparing its performance to the Phantom III. | 24th Jun 1936 | Box 155 \ 1 scan0236 | |
| Comparison of cooling fan performance between a Phantom III and a Cadillac, with a proposal for improving the radiator cooling. | 24th Jun 1936 | Box 155 \ 1 scan0237 | |
| Results of radiator tests on a Cadillac car at Brooklands. | 24th Jun 1936 | Box 155 \ 1 scan0238 | |
| Specification sheet comparing the particulars of a 'Ph.III Fan' and a 'Cadillac' fan. | 18th Jun 1936 | Box 155 \ 1 scan0239 | |
| Test results for a Cadillac V-16 car at Brooklands, comparing performance with and without the fan. | 18th Jun 1936 | Box 155 \ 1 scan0240 | |
| Summary of radiator test results conducted at Brooklands. | 3rd Jul 1936 | Box 155 \ 1 scan0241 | |
| Letter to the Clerk of the Course at Brooklands Motor Course requesting track availability for testing. | 3rd Jul 1936 | Box 155 \ 1 scan0242 | |
| Telegram inquiring about the availability of a track for testing. | 9th Jul 1936 | Box 155 \ 1 scan0243 | |
| Telegram received by telephone regarding the availability of the track at Weybridge. | 9th Jul 1936 | Box 155 \ 1 scan0244 | |
| Track visit with car 37-EX at Brooklands to investigate petrol supply drying out at high temperatures. | 15th Jul 1936 | Box 155 \ 1 scan0245 | |
| Test report on carburetter adjustments, petrol consumption, and issues with gearing, bonnet clips, and bodywork. | 15th Jul 1936 | Box 155 \ 1 scan0246 | |
| Instructions for preparing the 36-EX car for radiator tests at Brooklands. | 24th Aug 1936 | Box 155 \ 1 scan0247 | |
| List of instructions for fitting a petrol pump, thermometers, and a bonnet to a car. | 1st Aug 1936 | Box 155 \ 1 scan0248 | |
| Telegram from Robotham inquiring about track availability for tests at Weybridge. | 26th Aug 1936 | Box 155 \ 1 scan0249 | |
| Telegram received by telephone regarding track availability. | 26th Aug 1936 | Box 155 \ 1 scan0250 | |
| Telegram to Mr. Bradley at Brooklands Motor Course enquiring about track availability for a test. | 7th Sep 1936 | Box 155 \ 1 scan0251 | |
| Telegram received by telephone regarding the availability of tracks. | 9th Sep 1936 | Box 155 \ 1 scan0252 | |
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