| Description | Date | Identifier | |
| Vibration measurements for a continuous battery box support at different speeds, identifying critical axle speed tramping. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan126 | |
| Explaining the new output curves for the Phantom II 45 Coil Dynamos. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan127 | |
| Analysis of dynamo coil performance, comparing output curves and magnetic circuit modifications. | 8th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan128 | |
| Page discussing the volt-ampere curve for a 12-volt P & R battery and considerations for an armature experiment. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan129 | |
| Experience with 'Diamond' engine mountings and torque reaction dampers on 20/25 and 25 HP engines. | 12th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan130 | |
| Tests on the 25 HP model's clutch pedal travel and flywheel strength. | 12th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan131 | |
| Graph comparing load versus deflection for a standard and a lightened 25 HP clutch. | 14th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan132 | |
| Very faint and mostly illegible document with bleed-through text from the reverse side, marked with a Print Room stamp. | 14th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan133 | |
| Road and bench tests of Delco adjustable hydraulic dampers, detailing the adjustment mechanism and its effects. | 14th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan134 | |
| Damper loadings, valve silence, and road test performance. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan135 | |
| Two graphs showing the variation in maximum ball pin load versus axle velocity for a Delco adjustable damper. | 14th Feb 1931 | West Wittering \ V \ December1930-February1931 Scan136 | |
| The reverse of a document or photograph with a date stamp. | 14th Feb 1931 | West Wittering \ V \ December1930-February1931 Scan137 | |
| Graphs showing high and low pressure tests for a Delco rear damper with a 12' lever and adjustable leak. | 14th Feb 1931 | West Wittering \ V \ December1930-February1931 Scan138 | |
| Performance charts for a Delco II adjustable rear damper under different leak and pressure settings. | 14th Feb 1931 | West Wittering \ V \ December1930-February1931 Scan139 | |
| Diagram illustrating the eccentricity of valve passages for a 'Delco II' model, viewed from the high-pressure end. | 7th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan140 | |
| Cross-section drawing for a Delco II leak adjustment shaft. | 7th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan141 | |
| Correcting a misunderstanding about the number of coils in a medium output dynamo. | 4th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan142 | |
| 'Two Charge Scheme' involving modifications to the dynamo, switchbox, and lighting system. | 1st Jan 1931 | West Wittering \ V \ December1930-February1931 Scan143 | |
| Dynamo safety, resistance, and the use of 48-watt headlamp bulbs. | 10th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan144 | |
| Proposal to standardise a metal tool box on imported Phantom II cars, addressing unsatisfactory current tool storage methods. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan145 | |
| Examination of engine back-running during hand starting, focusing on magneto ignition timing. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan146 | |
| Magneto timing issues causing backward running and potential cures for EW6 type magnetos. | 6th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan147 | |
| Detonation issues in supercharged aero engines during take-off and proposing tests. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan148 | |
| Type test report on an F.27 engine with a 6/1 compression ratio, detailing new camshaft performance, detonation, and fuel economy. | 16th Jan 1932 | West Wittering \ V \ December1930-February1931 Scan149 | |
| Modifications to dynamo armatures to increase current output at high speeds. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan150 | |
| Survey and comparison of different dynamo-battery electrical systems, including those from Bosch, Bijur, and Westinghouse. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan151 | |
| Modifications to external regulator controls for dynamo battery systems, comparing different regulation methods. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan152 | |
| Comparison of the relative heating of shunt wound and inherently battery controlled dynamos. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan153 | |
| Standardisation and recommendation of headlamp bulbs for the Phantom II and 20/25 models. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan154 | |
| List of recommended standard lamp bulbs for the Phantom II chassis. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan155 | |
| List of standard recommended lamp bulbs for the 20/25 chassis. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan156 | |
| Crankcase distortion tests conducted on a 25 HP engine. | 20th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan157 | |
| Diagram of an inverted 25 HP crankcase top half, showing an indicator clock on the centre main bearing. | 20th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan158 | |
| The reverse side of a technical drawing with a Print Room stamp. | 20th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan159 | |
| Graph showing crankcase deflections under various load conditions for a 25 HP engine. | 20th Jan 1937 | West Wittering \ V \ December1930-February1931 Scan160 | |
| Cover sheet with a 'Print Room, Derby' date stamp. | 20th Jan 1937 | West Wittering \ V \ December1930-February1931 Scan161 | |
| Standardisation of a reduction gear to LOP E.35711, with new strengthened casings, a driving shaft with tighter serrations, and hardened roller races with reduced clearances. | 30th Jun 1930 | West Wittering \ V \ December1930-February1931 Scan162 | |
| Explaining the attached blueprint curves for the 20/25 dynamo, detailing the methodology for temperature rise settings. | 26th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan163 | |
| Comparison of performance curves for various dynamo modifications, including different coil counts and pole piece designs. | 26th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan164 | |
| The operation of the Lucas dynamo. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan165 | |
| Graph showing output speed performance curves for three different 20/25 Dynamos at a constant operating voltage. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan166 | |
| Heavily faded document, likely a carbon copy, with almost completely illegible text and a purple ink stamp. | 26th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan167 | |
| Installation tests concerning air space and the formation of steam pockets in 'F' engine cylinder jackets. | 27th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan168 | |
| Tests on engine cooling systems, focusing on header tank design, water flow, and steam formation. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan169 | |
| Water system filling procedures and tests conducted at various engine inclinations for aircraft. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan170 | |
| Engine cooling system tests, detailing tank capacities, water levels, and the influence of tank position on performance. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan171 | |
| Analysis of steam pocket formation and air trapping in engine cylinder jackets under various operating conditions. | 15th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan172 | |
| Report page discussing engine cooling system considerations, including tank position, header tanks, and steam pocket formation. | 11th Dec 1930 | West Wittering \ V \ December1930-February1931 Scan173 | |
| Graph showing cylinder water level and airspace tests for F'S & H/S engines at various angles of inclination. | 11th Dec 1930 | West Wittering \ V \ December1930-February1931 Scan174 | |
| Blank document page with a receiving stamp from Derby. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan175 | |
| Graph determining the air space in cylinder blocks based on header tank height and engine tilt for F.S. F. M/S engines. | 11th Dec 1930 | West Wittering \ V \ December1930-February1931 Scan176 | |
| Blank document page with a Print Room date stamp from Derby. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan177 | |
| Graph from an installation test showing water displacement by steam in a Hart Header Tank. | 5th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan178 | |
| Stamped document backing sheet. | 10th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan179 | |
| Graph showing the quantity of water displaced by steam formation in the cylinder jackets of a Hart Header Tank under two test conditions. | 6th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan180 | |
| Blank page with a Print Room stamp. | 16th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan181 | |
| Graph from installation tests showing the effect of airspace in cylinder jackets on water displaced. | 5th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan182 | |
| Graph from installation tests on a Fury Tank showing the effect of RPM on water displaced during the warming-up period. | 5th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan183 | |
| Diagram illustrating installation tests for filling an aircraft's water system on uneven ground to manage air space in cylinder jackets. | 22th Dec 1930 | West Wittering \ V \ December1930-February1931 Scan184 | |
| Sketch of the apparatus and method for obtaining data on airspace in engine cylinder jackets when inclined at different angles. | 5th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan185 | |
| The temperature rise settings for Phantom II medium and high output dynamos. | 27th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan186 | |
| Inertia torque and local out-of-balance as causes of engine roughness. | 27th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan187 | |
| The causes and investigation of failures in Entex ignition coils. | 28th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan188 | |
| Analysis of magnetic circuit design for energy storage, comparing closed versus open circuits and the impact of core size and windings. | 28th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan189 | |
| Ignition coil winding insulation materials, wire quality, and performance issues related to spark plug gaps. | 28th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan190 | |
| The experimental production and voltage testing of ignition coils, discussing their performance and durability. | 28th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan191 | |
| Ignition coil testing, including impregnation, voltage, insulation, and comparison with American coils. | 28th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan192 | |
| Tests and construction of Delco Lovejoy hydraulic dampers. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan193 | |
| Report analyzing the design and function of a damper, focusing on venting, filtering, and valves. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan194 | |
| Technical analysis of spring, damper, and valve performance in a vehicle's suspension system. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan195 | |
| Report page discussing damper levers, patent situations, road tests, and piston dampers. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan196 | |
| Weight comparison table for Lovejoy and 20 HP rear shock damper components. | 30th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan197 | |
| Graphs comparing bending and torsion deflection under load for various hydraulic damper levers and arms. | 3rd Feb 1931 | West Wittering \ V \ December1930-February1931 Scan198 | |
| Mostly blank document with a purple stamp in the top right corner. | 3rd Feb 1931 | West Wittering \ V \ December1930-February1931 Scan199 | |
| Set of graphs and data tables showing the variation in Delco loading with axle velocity for rear axle dampers. | 3rd Feb 1931 | West Wittering \ V \ December1930-February1931 Scan200 | |
| Performance graphs and data for front axle dampers with 7.5' levers. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan201 | |
| Blueprint showing various performance diagrams for a Delco Damper system. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan202 | |
| Graph showing the performance variation of a Delco Damper with temperature at high and low pressures. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan203 | |
| Performance variation graphs and data tables for a Delco Damper at different speeds. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan204 | |
| Graph plotting the variation of maximum ball pin load against axle velocity for a 7.5' lever. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan205 | |
| Diagram of a Lovejoy Piston with cross-sections and annotations. | 9th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan206 | |
| Blueprint with specifications for an upward/low pressure valve and a high pressure/rebound valve. | 20th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan207 | |
| Blueprint graph and diagram detailing the results of Delco lever deflection tests. | 20th Jan 1931 | West Wittering \ V \ December1930-February1931 Scan208 | |
| Heavily faded carbon copy document with a purple ink 'Print Room' date stamp. | 3rd Feb 1931 | West Wittering \ V \ December1930-February1931 Scan209 | |
| Policy and design proposals for shock dampers, referencing several numbered schematics. | 2nd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan001 | |
| Modifications to Maybach dog clutches, focusing on face angles and tooth rounding for experimental models. | 2nd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan002 | |
| Correspondence regarding drawings and schemes for the Japan 3 gearbox casing. | 2nd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan003 | |
| Request for a rough drawing of hydraulic dampers to be submitted to Derby for criticism. | 2nd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan004 | |
| Various schemes and issues related to gearbox design, specifically change gear and Maybach jaws. | 2nd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan005 | |
| Permanent application for a successful lubrication test on front shock dampers. | 3rd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan006 | |
| Suitability of different starter motors and drives for the 'Japan 3' project. | 3rd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan007 | |
| Accidental crashing issues with hand-controlled Maybach dogs and proposing design modifications. | 31th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan008 | |
| Gear changing procedures, transmission clicking, and potential improvements. | 3rd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan009 | |
| Modifications to the Maybach jaws on an experimental epicyclic 3rd speed gearbox. | 3rd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan010 | |
| Original prints and sample sets for bonnet ventilators. | 3rd Mar 1931 | West Wittering \ V \ March1931-September1931 Scan011 | |
| Design issues and suggestions for the P. 2. Rear Apron. | 4th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan012 | |
| Proposal for the Japan 3 dynamo drive and mounting, detailing the pinion design, lubrication, and materials. | 5th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan013 | |
| Preliminary arrangement for the 'Japan 3' induction system and carburetter. | 5th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan014 | |
| Design and development of hydraulic dampers, comparing different design choices. | 6th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan015 | |
| Issues with front dampers, axle control, and the scaling of a damper design for different vehicle weights. | 6th Mar 1931 | West Wittering \ V \ March1931-September1931 Scan016 | |
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