| Description | Date | Identifier | |
| Engine tests with different airscrews to investigate and reduce gear rattle periods. | 18th Feb 1932 | Box 179 \ 2 img261 | |
| Graph showing the variation in angular deflection versus torque for a Kestrel engine's reduction gear spring coupling. | 5th Feb 1932 | Box 179 \ 2 img262 | |
| Graph showing the variation of angular deflection for a Kestrel engine's reduction gear spring coupling with increasing torque. | 5th Feb 1932 | Box 179 \ 2 img263 | |
| Graph showing variation in angular deflection of a reduction gear spring coupling with increasing torque for Kestrel engines. | 17th Feb 1932 | Box 179 \ 2 img264 | |
| Contents and cost of the chassis tool kit, specifically regarding single-ended spanners. | 19th Feb 1932 | Box 179 \ 2 img265 | |
| The initial test and performance of the J.3 engine unit, including details on general performance, power, and camshaft settings. | 19th Feb 1932 | Box 179 \ 2 img266 | |
| Engine test report detailing vibrations, leaks, ignition, and post-run condition. | 19th Feb 1932 | Box 179 \ 2 img267 | |
| Blueprint graph comparing the B.M.E.P. and valve timing for Japan III and Japan I engine units. | 14th Feb 1931 | Box 179 \ 2 img268 | |
| Comparing the weight of the J.3 unit to the standard 20/25, noting a reduction of 81 lbs. | 29th Feb 1932 | Box 179 \ 2 img269 | |
| Visit to Messrs. Lucas to discuss developments in voltage regulators, starter motors, and horns. | 17th Feb 1932 | Box 179 \ 2 img270 | |
| Clarifying the weight calculation of the 20-GIV chassis compared to the standard 'T' series. | 2nd Feb 1932 | Box 179 \ 2 img271 | |
| Clarifying weight calculations for a 20-GIV model, correcting for accessories and an oversized petrol tank to determine a final body weight. | 22th Feb 1932 | Box 179 \ 2 img272 | |
| Providing dimensional figures for Alfa gears following a telephone conversation. | 22th Feb 1932 | Box 179 \ 2 img273 | |
| Test results and modifications for the Phantom II expanding type carburetter. | 12th Feb 1932 | Box 179 \ 2 img274 | |
| Carburettor modifications and performance tests, detailing changes to address fuel supply issues. | 23th Feb 1932 | Box 179 \ 2 img275 | |
| Service complaints about brake drum wear and an evaluation of alternative materials and suppliers. | 23th Feb 1932 | Box 179 \ 2 img276 | |
| Production of the J.3. chassis and Peregrine car bodies. | 24th Feb 1932 | Box 179 \ 2 img277 | |
| Predicting the relative severity of 6th order torsional vibration on a Phantom II engine compared to a 60 Vee 6250cc engine. | 24th Feb 1932 | Box 179 \ 2 img278 | |
| Method to overcome gear rattles on the 25 HP model by adding a small friction damper. | 1st Feb 1932 | Box 179 \ 2 img279 | |
| Steering problems, specifically joggles and shocks on Phantom II cars, and potential solutions. | 26th Feb 1932 | Box 179 \ 2 img280 | |
| Proposal to fit a flexible shackle to a car for a 10,000-mile test to improve steering performance. | 28th Feb 1931 | Box 179 \ 2 img281 | |
| Dissatisfaction with the noise from the J.3 engine unit's gears and the need for a solution. | 27th Feb 1932 | Box 179 \ 2 img282 | |
| Sluggish motion and lubrication issues in sequence starter motors, comparing different designs. | 27th Feb 1932 | Box 179 \ 2 img283 | |
| Gear teeth friction, pinion engagement, and potential improvements to motor armature windings. | 27th Feb 1932 | Box 179 \ 2 img284 | |
| Visit to R.A.E. Farnborough concerning flight tests of carburetters on a 'Vee' (Kestrel 41) engine. | 27th Feb 1932 | Box 179 \ 2 img285 | |
| Carburettor performance, mixture control modifications, and flight test results. | 23th Feb 1932 | Box 179 \ 2 img286 | |
| Automatic boost control and take-off power limitations for a supercharged engine. | 27th Aug 1932 | Box 179 \ 2 img287 | |
| Series of graphs showing engine performance and fuel consumption with new type carburettors under different throttle conditions. | 29th Feb 1932 | Box 179 \ 2 img288 | |
| Blueprint of a long mechanical component, possibly a connecting rod, with detailed dimensions. | 29th Feb 1932 | Box 179 \ 3 img001 | |
| Blueprint of a connecting rod with dimensional specifications. | 29th Feb 1932 | Box 179 \ 3 img002 | |
| Blueprint drawing of a piston with external and cross-section views. | 29th Feb 1940 | Box 179 \ 3 img003 | |
| Blueprint of an Alfa Romeo piston and piston rings. | 29th Feb 1940 | Box 179 \ 3 img004 | |
| Specification sheet for Alfa Romeo valve springs. | 29th Feb 1932 | Box 179 \ 3 img005 | |
| Graph plotting measured valve lift and derived velocity curves against an unspecified x-axis. | 29th Feb 1932 | Box 179 \ 3 img006 | |
| Graph showing valve lift and acceleration data for inlet and exhaust. | 29th Feb 1932 | Box 179 \ 3 img007 | |
| Performance graph for an Alfa Romeo 1750 cc engine. | 29th Feb 1932 | Box 179 \ 3 img008 | |
| Graph of valve lift curves and velocity against degrees of rotation. | 28th Feb 1929 | Box 179 \ 3 img009 | |
| Blueprint showing the layout of brakes and cam profile for an Alfa Romeo 1750cc. | 28th Feb 1929 | Box 179 \ 3 img010 | |
| Blueprint diagram of steering for an Alfa Romeo 1750 GS. | 29th Feb 1932 | Box 179 \ 3 img011 | |
| Blueprint showing designs for a combustion space and camshaft brake for an Alfa Romeo 1750 cc engine. | 29th Feb 1932 | Box 179 \ 3 img012 | |
| The torsional period and performance issues of the J.3 crankshaft and damper during engine testing. | 1st Mar 1932 | Box 179 \ 3 img013 | |
| Brief status update on the testing of the Phantom II Synchro Mesh Gearbox. | 2nd Mar 1932 | Box 179 \ 3 img014 | |
| Comparing the reverse gear trains of an Alfa Romeo with an in-house design and outlining future tests. | 2nd Mar 1932 | Box 179 \ 3 img015 | |
| Tests to determine the variation of tappet clearance during the warm-up period of the 1st Japan 3 Unit. | 2nd Mar 1932 | Box 179 \ 3 img016 | |
| Analysis of engine noise related to rocker shafts, oil pump rattle, and crankshaft torsional vibration periods. | 3rd Apr 1934 | Box 179 \ 3 img017 | |
| Investigations into engine gear noise and flywheel humming issues. | 2nd Mar 1932 | Box 179 \ 3 img018 | |
| Decision regarding new carburetters, comparing the standard single carburetter against a two-carburetter setup. | 3rd Mar 1932 | Box 179 \ 3 img019 | |
| Tests and issues with the Phantom II expanding carburetter. | 3rd Mar 1932 | Box 179 \ 3 img020 | |
| Carburettor testing, focusing on acceleration issues, slow running fuel supply, and choke design. | 3rd Dec 1932 | Box 179 \ 3 img021 | |
| Modifications to the carburettor's air piston and fuel metering. | 3rd Mar 1932 | Box 179 \ 3 img022 | |
| Road test report on a Phantom II Synchro Mesh gearbox, noting its quietness and a minor clutch issue. | 3rd Mar 1932 | Box 179 \ 3 img023 | |
| Correcting a previously sent sketch of an Alfa Romeo reverse gear train and providing further details. | 3rd Mar 1932 | Box 179 \ 3 img024 | |
| Correcting a previously sent sketch and providing details on the Alfa Romeo reverse gear mechanism. | 3rd Mar 1932 | Box 179 \ 3 img025 | |
| Blueprint diagram showing the arrangement of gear trains for an Alfa Romeo 1750 C.C. | 4th Mar 1932 | Box 179 \ 3 img026 | |
| Technical report on the engine of an Alfa-Romeo car. | 3rd Mar 1932 | Box 179 \ 3 img027 | |
| Technical specifications for the Supercharger, Valve Gear, Gearbox, and Axles. | 3rd Mar 1932 | Box 179 \ 3 img028 | |
| Specifications for the front axle, brakes, steering, springs, electrical system, and chassis particulars. | 3rd Mar 1932 | Box 179 \ 3 img029 | |
| Blueprint detailing the design, dimensions and weight of an Alfa-Romeo valve. | 29th Feb 1932 | Box 179 \ 3 img030 | |
| Investigation into cylinder water jacket pressures on Kestrel 'carb in Vee' engines with evaporative cooling systems. | 1st Mar 1932 | Box 179 \ 3 img031 | |
| Conclusions and recommendations regarding water circulation modifications on a Hart machine. | 4th Mar 1932 | Box 179 \ 3 img032 | |
| Test report on a modified header tank and Nimrod condenser on a Kestrel 10S engine. | 1st Mar 1932 | Box 179 \ 3 img033 | |
| Schematic showing the recommended arrangement of water outlets for an engine. | 14th Sep 1923 | Box 179 \ 3 img034 | |
| Chart showing cylinder block pressures for standard and modified pipes. | 18th Mar 1932 | Box 179 \ 3 img035 | |
| Difficulties with the 'Bensport' synchro-mesh gearbox and recommending a change for sports cars. | 5th Mar 1932 | Box 179 \ 3 img036 | |
| Suitability of different anti-freezing compounds, recommending ethylene or trimethylene glycol over glycerine. | 5th Mar 1932 | Box 179 \ 3 img037 | |
| Test report on a thermostatically operated radiator shutter for a Hawker Fury aircraft. | 5th Mar 1932 | Box 179 \ 3 img038 | |
| Test report on the dynamometer and road performance of an 18 HP Lanchester car, focusing on its fluid flywheel. | 5th Mar 1932 | Box 179 \ 3 img039 | |
| Performance graph showing power at road wheels versus road speed for an 18 HP Lanchester car. | 1st Mar 1938 | Box 179 \ 3 img040 | |
| Graph of road speed versus engine RPM, showing fluid flywheel slip for an 18 HP Lanchester car at full throttle. | 1st Mar 1932 | Box 179 \ 3 img041 | |
| Technical memo discussing the issue of 'Frame Jellying' and potential solutions. | 7th Mar 1932 | Box 179 \ 3 img042 | |
| Performance improvements in a compression ignition engine using Bosch nozzles and injectors. | 8th Mar 1932 | Box 179 \ 3 img043 | |
| Comparison report on the performance of a Bosch injector versus an in-house design, discussing differential ratios and valve settings. | 8th Jan 1932 | Box 179 \ 3 img044 | |
| Progress report on 12-cylinder engine development, focusing on performance, new cylinders, and injection timing. | 6th Mar 1932 | Box 179 \ 3 img045 | |
| Review of the central lubrication scheme, detailing issues with current fittings and plans to test alternatives from Luvax. | 8th Mar 1932 | Box 179 \ 3 img046 | |
| Gearbox designs for silent operation and easy gear changes. | 8th Mar 1932 | Box 179 \ 3 img047 | |
| Schematic diagrams of a gearbox or transmission system. | 9th Mar 1932 | Box 179 \ 3 img048 | |
| Overcoming noisy engine gears and plans to produce them like helical gears for the synchro-mesh box. | 9th Mar 1932 | Box 179 \ 3 img049 | |
| Cost, functionality, and potential simplification of the J.III and Parching starter motor main and relay switch. | 1st Mar 1932 | Box 179 \ 3 img050 | |
| Theory and testing of an automatic hold-off feature for the starter motor to prevent re-engagement. | 1st Mar 1932 | Box 179 \ 3 img051 | |
| Test report on oil leaks and carburation for a 20/25 HP tank engine when inclined forwards and backwards. | 14th Mar 1932 | Box 179 \ 3 img052 | |
| Fault with the synchro mesh portion of a gearbox after 400 miles of road testing. | 14th Mar 1932 | Box 179 \ 3 img053 | |
| Cylinder head temperature testing on a Kestrel engine under various cooling conditions. | 1st Mar 1932 | Box 179 \ 3 img054 | |
| Engine temperature tests comparing evaporatively cooled and water-cooled conditions, detailing component failures like water leaks and cracks. | 1st Mar 1932 | Box 179 \ 3 img055 | |
| Engine cooling tests comparing water-cooled and evaporatively cooled systems and investigating hot spots. | 1st Mar 1932 | Box 179 \ 3 img056 | |
| Performance graph of a Kestrel 2S engine, showing cylinder head temperatures and other parameters under evaporatively cooled conditions. | 1st Mar 1932 | Box 179 \ 3 img057 | |
| Graph of cylinder head temperatures and a full throttle power curve for a Kestrel No. 25 fully supercharged engine. | 1st Mar 1932 | Box 179 \ 3 img058 | |
| Graphs comparing cylinder temperatures under 'take-off' conditions for different cooling systems and spark plugs. | 1st Mar 1932 | Box 179 \ 3 img059 | |
| Comparison of Kestrel S engine temperature curves for water-cooled vs. evaporative-cooled systems at rated boost. | 15th Mar 1932 | Box 179 \ 3 img060 | |
| Outlining necessary modifications and points of attention for the J.J. chassis and engine. | 15th Mar 1932 | Box 179 \ 3 img061 | |
| Outlining the recommended procedure for developing and testing a new car, including engine, chassis, and steering components. | 15th Mar 1932 | Box 179 \ 3 img062 | |
| Comparing crankshaft details and torsional periods of the company's engines against those of Alfa Romeo. | 15th Mar 1932 | Box 179 \ 3 img063 | |
| Comparison table of crankshaft details and balance weights for various engines. | 1st Aug 1935 | Box 179 \ 3 img064 | |
| Laboratory examination comparing Wakefield's Castrol 'CC' oil with Price's Amber 'A' for use in gear boxes and spiral bevel rear axles. | 10th Mar 1932 | Box 179 \ 3 img065 | |
| Mileage test results for 'XXL' oil in Experimental Department cars and its potential as an alternative oil. | 13th Jan 1932 | Box 179 \ 3 img066 | |
| Investigation into the oiling system of a Kestrel engine for a 'Day & Night Fighter' from a cold start. | 3rd Mar 1932 | Box 179 \ 3 img067 | |
| Engine 'opening up' tests, discussing oil pressure, temperature, and carburettor performance with suggestions for modifications. | 24th Oct 1933 | Box 179 \ 3 img068 | |
| Proposal to investigate an aircraft engine's oil system, covering the effects of pipe size, oil quantity, and cleaning on system priming and pressure. | 24th Oct 1935 | Box 179 \ 3 img069 | |
| Graph showing oil temperature, pressure, and water temperature curves for a Kestrel 105 engine. | 14th Mar 1932 | Box 179 \ 3 img070 | |
| Proposal for a new lightweight electrical aero-engine revolution counter using a small alternator. | 6th Mar 1932 | Box 179 \ 3 img071 | |
| Practicalities and patentability of a scheme using a Ferranti rectifier instrument for aero engines. | 16th Mar 1932 | Box 179 \ 3 img072 | |
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