| Description | Date | Identifier | |
| Exhaust systems, noise silencing, and lessons learned from Cadillac. | 12th Feb 1934 | Box 178 \ 2 img173 | |
| Engine noise, vibration, and competitor analysis of Cadillac's engine and electrical systems. | 12th Feb 1934 | Box 178 \ 2 img174 | |
| Notes on Delco high-speed coils, starting systems, dynamos, and suspension. | 12th Feb 1934 | Box 178 \ 2 img175 | |
| Technical note on engine inertia, wing mounting, frame frequency, volumetric efficiency, and clutches. | 12th Feb 1934 | Box 178 \ 2 img176 | |
| Report from the USA on an investigation into Textolite timing gears at Buick. | 19th Feb 1934 | Box 178 \ 2 img177 | |
| Manufacturing, inspection, and erection procedures for gears, with notes on Buick's engineering practices. | 19th Feb 1934 | Box 178 \ 2 img178 | |
| Summary of design features from a competing manufacturer's new light eight vehicle. | 19th Feb 1934 | Box 178 \ 2 img179 | |
| Report from the U.S.A. on competitor developments in aluminium connecting rods, pistons, and clutches. | 19th Feb 1934 | Box 178 \ 2 img180 | |
| Car suspension development and a comparative analysis of competitor vehicles, particularly Packard and Cadillac. | 19th Feb 1934 | Box 178 \ 2 img181 | |
| Notes on crankshaft specifications, balancing procedures, a crank damper design, and gearbox characteristics. | 19th Feb 1934 | Box 178 \ 2 img182 | |
| Notes on gearbox, dashboard, clutch, and component weights, with a diagram of a synchro mesh cone. | 19th Feb 1934 | Box 178 \ 2 img183 | |
| And blueprint diagram analysing Packard's engine mounting system. | 19th Feb 1934 | Box 178 \ 2 img184 | |
| 8-cylinder engine design, comparing Cadillac La Salle crankshaft dimensions and American crankcase stiffness with Bentley components. | 19th Feb 1934 | Box 178 \ 2 img185 | |
| Comparison of American engine manifolding and performance with Rolls-Royce and Bentley equivalents, including torsional vibration data. | 19th Feb 1934 | Box 178 \ 2 img186 | |
| Report from the U.S.A. discussing and comparing the suspension systems of Chrysler, General Motors, and Mercedes vehicles. | 19th Feb 1934 | Box 178 \ 2 img187 | |
| Report comparing Cadillac, Packard, and Chrysler gearbox and transmission systems. | 19th Feb 1934 | Box 178 \ 2 img188 | |
| Future developments, steering shocks, and a comparison of competitor engine weights. | 19th Feb 1934 | Box 178 \ 2 img189 | |
| Competitor vehicle performance (Cadillac, Chrysler) and issues with Bentley steering in cold weather. | 19th Feb 1934 | Box 178 \ 2 img190 | |
| Notes on vehicle suspension characteristics, weight distribution testing, and steering ratios. | 19th Feb 1934 | Box 178 \ 2 img191 | |
| Report from the U.S.A. on the road performance and engine smoothness of various American cars. | 19th Feb 1934 | Box 178 \ 2 img192 | |
| Comparison of straight-eight and V-eight engines on factors including silence, weight, installation convenience, cost, and power. | 19th Feb 1934 | Box 178 \ 2 img193 | |
| Report comparing the ride quality and mechanical noise of American cars (Buick, Cadillac, Pontiac) with their own products. | 19th Feb 1934 | Box 178 \ 2 img194 | |
| Developments in hydraulic lash adjusters, brakes, valves, suspension, supercharging, and six-cylinder engines. | 19th Feb 1934 | Box 178 \ 2 img195 | |
| Vulture engine, American cars, travel plans, and a comparison of a V.8 Ford to a Bentley. | 19th Feb 1934 | Box 178 \ 2 img196 | |
| Report from the U.S.A. on a bearing factory visit, engine components, and comparative road tests. | 24th Feb 1934 | Box 178 \ 2 img197 | |
| Analysis of competitor engine designs from Cadillac and Buick, with discussion on silent tappets, engine configurations, and coachwork. | 24th Feb 1934 | Box 178 \ 2 img198 | |
| The engineering challenges of combining chassis and coachwork, referencing Chrysler Airflow and Cadillac designs. | 24th Feb 1934 | Box 178 \ 2 img199 | |
| Visit to the Hudson Essex Plant, comparing the Terraplane 6-cylinder engine to the 20/25 unit. | 23th Feb 1934 | Box 178 \ 2 img200 | |
| Analysis of an 8-cylinder engine's smoothness and a breakdown of its component dimensions. | 23th Feb 1934 | Box 178 \ 2 img201 | |
| American engine design features and summarizing potential development paths. | 23th Feb 1934 | Box 178 \ 2 img202 | |
| Comparative analysis of competitor engine, gearbox, and crankshaft damper designs. | 23th Feb 1934 | Box 178 \ 2 img203 | |
| Observations on various suspension types, frames, and pistons from competing manufacturers. | 23th Feb 1934 | Box 178 \ 2 img204 | |
| Findings on piston ring design, oil supply, and connecting rod materials. | 23th Feb 1934 | Box 178 \ 2 img205 | |
| Engine detonation, including a consumption loop graph and M.E.P. limits for air-cooled versus water-cooled engines. | 24th Feb 1934 | Box 178 \ 2 img206 | |
| Notes on Ethylene Glycol coolant properties, operating temperatures, and related engine component findings. | 23th Feb 1934 | Box 178 \ 2 img207 | |
| US automotive components including clutches, camshafts, and supercharging. | 23th Feb 1934 | Box 178 \ 2 img208 | |
| Technical report discussing gearboxes, brake systems, shock dampers, and lubrication. | 23th Feb 1934 | Box 178 \ 2 img209 | |
| Front end drive systems, comparing timing gears to silent chains, and issues with coachwork rattles. | 23th Feb 1934 | Box 178 \ 2 img210 | |
| Making a starter motor interchangeable with a Bosch unit for specific models, and related safety circuit considerations. | 7th Jan 1932 | Box 178 \ 3 img001 | |
| Improvements to gearbox silence through changes in gear design, grinding processes, and bearings. | 1st Jan 1932 | Box 178 \ 3 img002 | |
| Urgent improvements for 'F' & 'H' aero engines, specifically regarding cylinder construction and supercharging. | 24th Jan 1932 | Box 178 \ 3 img003 | |
| Outlining proposed developments and improvements for the Kestrel engine. | 7th Jan 1932 | Box 178 \ 3 img004 | |
| Outlining considerations for the Continental Phantom's carburettors and extra oil system. | 9th Jan 1932 | Box 178 \ 3 img005 | |
| Gearbox noise issues with the 25HP Synchro Mesh Helical 3rd Gearbox. | 9th Jan 1932 | Box 178 \ 3 img006 | |
| Proposed engine power improvements, including valve lift, supercharger application, and valve timing adjustments. | 9th Jan 1932 | Box 178 \ 3 img007 | |
| Use of .6 carbon steel for engine cylinder liners. | 9th Jan 1932 | Box 178 \ 3 img008 | |
| Steering lock modifications for 18 inch diameter wheel rims to improve the turning circle. | 1st Jan 1932 | Box 178 \ 3 img009 | |
| Schemes for J.3 Shock Dampers. | 9th Jan 1932 | Box 178 \ 3 img010 | |
| Potential modifications to the 20/25 engine's water pump to address boiling issues at low RPM. | 4th May 1932 | Box 178 \ 3 img011 | |
| The investigation of a 25HP S.M. gearbox, giving approval to proceed to production with a qualification on its lubrication system. | 1st Jan 1932 | Box 178 \ 3 img012 | |
| Recommended design modifications for the Continental Phantom's petrol pump to improve output at higher speeds. | 12th Jan 1932 | Box 178 \ 3 img013 | |
| Use of high-grade steel for aero engines and other components. | 15th Jan 1932 | Box 178 \ 3 img014 | |
| Coachbuilding strategy, quality control, and confidentiality concerns. | 12th Jan 1932 | Box 178 \ 3 img015 | |
| Drawing for modifying a 20/25 water pump. | 12th Jan 1932 | Box 178 \ 3 img016 | |
| The interference between the front shock damper and rivets on the engine carrying cross member. | 12th Jan 1932 | Box 178 \ 3 img017 | |
| Design drawing for the Peregrine engine's battery ignition, noting the control rod now clears the cylinder. | 12th Jan 1932 | Box 178 \ 3 img018 | |
| Design of a non-spring loaded gland for a shock damper to reduce cost and save space. | 13th Jan 1932 | Box 178 \ 3 img019 | |
| Automatic brake adjustment mechanism for an epicyclic 3rd speed gearbox, suggesting material and design changes. | 1st Jan 1932 | Box 178 \ 3 img020 | |
| Initial proposal and sketch for the J. 3 instrument board layout. | 13th Jan 1932 | Box 178 \ 3 img021 | |
| Requirements and alternatives for electric horns for model J.3, noting the ineffectiveness of some existing options. | 17th Jan 1932 | Box 178 \ 3 img022 | |
| Design of a shock damper with distant control, referencing scheme 3405. | 14th Jan 1932 | Box 178 \ 3 img023 | |
| Design and suitability of a guard ring type steering column control. | 15th Jan 1932 | Box 178 \ 3 img024 | |
| Possibility and risks of purchasing steel from sources other than Firth's, focusing on price and uniformity. | 13th Jan 1922 | Box 178 \ 3 img025 | |
| Crankshaft vibration dampers and a comparison with the Bentley 8. | 19th Jan 1932 | Box 178 \ 3 img026 | |
| Positioning and policy for a high-frequency electric horn. | 15th Jan 1932 | Box 178 \ 3 img027 | |
| Proposing a revised method for the oil connection on the 25HP front axle to address assembly difficulties. | 15th Jan 1932 | Box 178 \ 3 img028 | |
| Specifications for the front end of the J. 3. chassis, with comparisons to the 25HP model. | 16th Jan 1932 | Box 178 \ 3 img029 | |
| Design of the dashboard fixing and side wheel carrier, suggesting tests to simplify the assembly. | 16th Jan 1932 | Box 178 \ 3 img030 | |
| Print showing the P.3 front axle control, its steering locks and lubrication method. | 16th Jan 1932 | Box 178 \ 3 img031 | |
| Sending prints for a centre tubular cross member with solid flanges and an issue with twisted flanges. | 16th Jan 1932 | Box 178 \ 3 img032 | |
| Bensport crankshaft, analyzing critical frequencies and damper inertia in comparison to Bentley and other engine models. | 16th Jan 1932 | Box 178 \ 3 img033 | |
| Proposal for body wiring and accessory boards, suggesting repeating the accessory distribution box at the rear of the frame. | 18th Jan 1932 | Box 178 \ 3 img034 | |
| The modification scheme for SU carburettors on the Continental Phantom chassis. | 1st Jan 1932 | Box 178 \ 3 img035 | |
| Manufacturing and specifications for car bodies for the JAPAN 3 and PEREGRINE 2 models. | 19th Jan 1932 | Box 178 \ 3 img036 | |
| Options for coachwork, including building experimental bodies in-house versus sourcing from production firms like Rootes. | 19th Jan 1932 | Box 178 \ 3 img037 | |
| Move from external floodlighting to internal lighting for instrument boards. | 19th Jan 1932 | Box 178 \ 3 img038 | |
| Request for the estimated weight of a 20-G-4 chassis and body, with handwritten weight calculations. | 20th Jan 1932 | Box 178 \ 3 img039 | |
| The need for a damper indicator oil gauge for the J. 3. instrument patch. | 20th Jan 1932 | Box 178 \ 3 img040 | |
| Target weight for the Peregrine chassis and finished car in comparison to competitor models. | 22th Jan 1932 | Box 178 \ 3 img041 | |
| Comparative table of specifications for various motor cars, including Rolls-Royce models and their competitors. | 23th Jan 1932 | Box 178 \ 3 img042 | |
| Advantages of independent springing and proposing the creation of a chassis scheme. | 23th Jan 1932 | Box 178 \ 3 img043 | |
| Potential design flaws and failures in the Phantom II gearbox, and proposing alternative gearbox designs. | 23th Jan 1932 | Box 178 \ 3 img044 | |
| Ideas for a two-speed epicyclic gearbox, comparing it to a competitor's (Wilson) design. | 23th Jan 1932 | Box 178 \ 3 img045 | |
| Three design schemes for J. 3. model radiator shutters. | 23th Jan 1932 | Box 178 \ 3 img046 | |
| Use of oilless bearings in starter motors. | 28th Jan 1932 | Box 178 \ 3 img047 | |
| With diagrams proposing alternative construction methods for an ignition coil. | 28th Jan 1932 | Box 178 \ 3 img048 | |
| Manufacturing process and cost-effectiveness of a J.F. Frame tubular cross member. | 28th Jan 1932 | Box 178 \ 3 img049 | |
| Use of J.1 engine heads for sports cars and a proposal for a new 'Bensport' model. | 28th Jan 1932 | Box 178 \ 3 img050 | |
| With suggestions for improving the epicyclic third-speed gearbox. | 29th Jan 1932 | Box 178 \ 3 img051 | |
| Modifications to the clutch, brake lever, and a scheme for pre-selecting gears. | 29th Jan 1932 | Box 178 \ 3 img052 | |
| Inquiry regarding the force required to operate S.U. carburettor jet seatings. | 29th Jan 1932 | Box 178 \ 3 img053 | |
| Standard substitute battery for the 20/25 HP model and improved clamping methods. | 29th Jan 1932 | Box 178 \ 3 img054 | |
| Modifications and testing for Continental P. 2. induction pipes. | 30th Jan 1932 | Box 178 \ 3 img055 | |
| Dimensions for a lubrication modification to the 20/25 battery ignition system. | 30th Jan 1932 | Box 178 \ 3 img056 | |
| Potential modification to the accelerator pedal for the Peregrine 2. | 1st Feb 1932 | Box 178 \ 3 img057 | |
| Clarifying the policy on the wiring of accessories for the J.3 chassis. | 4th Feb 1932 | Box 178 \ 3 img058 | |
| Specifications and suggestions for clutch and brake springs for an epicyclic 3rd speed gearbox. | 2nd Feb 1932 | Box 178 \ 3 img059 | |
| Recurring failures of the Phantom II spring drive and proposing a design alteration. | 2nd Feb 1932 | Box 178 \ 3 img060 | |
| Use of universal batteries on 25HP and J.3 models, focusing on tray modifications, lids, and securing methods. | 2nd Feb 1932 | Box 178 \ 3 img061 | |
| Use and scaling of coachwork parts from existing models for the 'Peregrine Two' project. | 4th Mar 1932 | Box 178 \ 3 img062 | |
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