| Description | Date | Identifier | |
| Standardizing parts, particularly electrical components, between British and American production for a new car model. | 16th Jul 1920 | Box 180 \ M2 \ M2.5 img003 | |
| Supplier quality for proprietary articles like generators, comparing Lucas, Watford, and Bijur, and considering in-house production. | 16th Jul 1920 | Box 180 \ M2 \ M2.5 img004 | |
| Page discussing the difficulty in maintaining the high standard demanded for silence in the chassis. | 8th Jul 1920 | Box 180 \ M2 \ M2.5 img005 | |
| Evaluation of an American-made Foxborough Thermometer and its suitability for use in cars. | 19th Jul 1920 | Box 180 \ M2 \ M2.5 img006 | |
| The usefulness of a water thermometer in preventing radiator freezing or boiling. | 19th Jul 1920 | Box 180 \ M2 \ M2.5 img007 | |
| Analysis of the reliability of Whittle type fan belts made with fibre and leather for American R-R chassis. | 19th Jul 1920 | Box 180 \ M2 \ M2.5 img008 | |
| Unsuitability of skirted rubber pedal pads for American cars due to issues with wear and space constraints. | 19th Jul 1920 | Box 180 \ M2 \ M2.5 img009 | |
| Receipt and evaluation of pressure gauges for American cars, noting damage to one and suggesting aesthetic improvements. | 19th Jul 1920 | Box 180 \ M2 \ M2.5 img010 | |
| Recommendation to use pre-war rear springs for American chassis, detailing their advantages. | 30th Jul 1920 | Box 180 \ M2 \ M2.5 img011 | |
| Poor quality of an American Bosch Starter Motor and expressing doubt about the Bosch Company of America. | 31th Aug 1920 | Box 180 \ M2 \ M2.5 img012 | |
| Letter arranging the dispatch of a 20 HP car with 4-wheel brakes for a 10,000-mile test run in France. | 20th May 1925 | Box 180 \ M2 \ M2.6 img001 | |
| The preparation and logistical arrangements for sending the 'INDIA' car with F.W.B. for tests in France. | 21th May 1925 | Box 180 \ M2 \ M2.6 img002 | |
| Car's journey to France for testing, detailing travel delays and initial performance feedback on steering. | 31th May 1925 | Box 180 \ M2 \ M2.6 img003 | |
| Letter regarding buffer clearance and a stiff change speed lever on a 20 HP car, chassis 9-G-111. | 4th Jun 1925 | Box 180 \ M2 \ M2.6 img004 | |
| The difficulties experienced during the shipment of chassis 9 G.III from London to Boulogne. | 6th Jun 1925 | Box 180 \ M2 \ M2.6 img005 | |
| Road testing, required repairs, and performance updates for chassis 9 G.III. | 7th Jun 1925 | Box 180 \ M2 \ M2.6 img006 | |
| Severe engine vibrations and potential crankshaft whip experienced at 64 m.p.h. | 15th Jun 1925 | Box 180 \ M2 \ M2.6 img007 | |
| Letter from the Experimental Department to Mr. Hancock regarding vehicle test report issues, specifically steering, an oil leak, and the clutch. | 15th Jun 1925 | Box 180 \ M2 \ M2.6 img008 | |
| Request for data regarding engine cooling performance on vehicle 93-NK. | 1st Jan 1923 | Box 180 \ M2 \ M2.6 img009 | |
| Accompanying a summary of faults from a 10,216-mile test on chassis 9-G-111 in France. | 9th Jul 1925 | Box 180 \ M2 \ M2.6 img010 | |
| Summary of faults during a 10,216 miles test on chassis 9-G-111. | 28th Jun 1925 | Box 180 \ M2 \ M2.6 img011 | |
| Secret memo detailing the dispatch of cars 8-G-111 and 9-G-111 for use and testing. | 18th Jul 1925 | Box 180 \ M2 \ M2.6 img012 | |
| Enquiring if a car for the 'INDIA' project has passed its 10,000-mile test. | 21th Jul 1925 | Box 180 \ M2 \ M2.6 img013 | |
| Arrangements for a 20 HP car's 10,000-mile trial run in France. | 23th Jul 1925 | Box 180 \ M2 \ M2.6 img014 | |
| Letter of authorization for signing papers for a 20 HP car being taken to France. | 23th Jul 1925 | Box 180 \ M2 \ M2.6 img015 | |
| Letter detailing the dispatch of replacement servo cams and plugs, and providing advice on a universal joint cover leak. | 13th Aug 1925 | Box 180 \ M2 \ M2.6 img016 | |
| Conditions for the final 3,000 miles of a 10,000-mile test on the 'INDIA' chassis, to be conducted in France. | 14th Aug 1925 | Box 180 \ M2 \ M2.6 img017 | |
| Secret memo regarding the reduction of a 10,000-mile test on an 'India' chassis and potential known faults on another test car. | 20th Aug 1925 | Box 180 \ M2 \ M2.6 img018 | |
| Status report on experimental 20 HP cars, including one with 4-wheel brakes used by Mr. Royce and another in France awaiting parts. | 24th Aug 1925 | Box 180 \ M2 \ M2.6 img019 | |
| Outlining the procedure for a 10,000-mile test on the 'India' car. | 24th Aug 1925 | Box 180 \ M2 \ M2.6 img020 | |
| Tyre wear, average mileage, and replacement needs for vehicles operating in France. | 24th Aug 1925 | Box 180 \ M2 \ M2.6 img021 | |
| Querying excessive expenditure on Dunlop tyres and inner tubes for chassis 9-G-3. | 24th Aug 1925 | Box 180 \ M2 \ M2.6 img022 | |
| Secret memo regarding arrangements for a 10,000-mile vehicle test in France. | 25th Aug 1925 | Box 180 \ M2 \ M2.6 img023 | |
| Tyre wear, mileage, and replacement needs during a 10,000 miles test for chassis 9 G.III. | 26th Aug 1925 | Box 180 \ M2 \ M2.6 img024 | |
| Tyre usage, wear, and discards for chassis 9 G.III during a 10,000-mile test. | 26th Aug 1925 | Box 180 \ M2 \ M2.6 img025 | |
| Stock report for inner tubes detailing their condition and quantity. | 26th Aug 1925 | Box 180 \ M2 \ M2.6 img026 | |
| Letter regarding car testing in France, requesting a report and discussing personnel changes. | 26th Aug 1925 | Box 180 \ M2 \ M2.6 img027 | |
| 10,000-mile test on the 'India' car in France, discussing battery water and engine detonation. | 26th Aug 1925 | Box 180 \ M2 \ M2.6 img028 | |
| Outlining arrangements for drivers and mechanics for the 10,000 miles 'India' Test. | 27th Aug 1925 | Box 180 \ M2 \ M2.6 img029 | |
| Request to arrange for a 20 HP car to meet at Le Havre for the 'India 10,000 Miles Test'. | 27th Aug 1925 | Box 180 \ M2 \ M2.6 img030 | |
| Letter from G.W. Hancock discussing test results and faults on Chassis 9 G.III, including steering and gear issues. | 28th Aug 1925 | Box 180 \ M2 \ M2.6 img031 | |
| The failure of 20 HP wing stays following a 10,000 miles test. | 1st Aug 1925 | Box 180 \ M2 \ M2.6 img032 | |
| Petrol quality and engine detonation during a 10,000-mile test in France. | 31th Aug 1925 | Box 180 \ M2 \ M2.6 img033 | |
| Cover memo for the final reports of a 10,000-mile experimental road test on the 'India' car in France. | 1st Sep 1925 | Box 180 \ M2 \ M2.6 img034 | |
| Summary of failures for chassis 9-G-111 during a 7,000-mile test. | 30th Aug 1925 | Box 180 \ M2 \ M2.6 img035 | |
| Test report on Chassis 9.G.111 after the 'India' 10,000 miles test, detailing issues requiring attention. | 2nd Sep 1925 | Box 180 \ M2 \ M2.6 img036 | |
| Cover note attaching a report on the 10,000 miles test of the 20 HP 'India' model. | 24th Sep 1925 | Box 180 \ M2 \ M2.6 img037 | |
| Typed letter reporting on a car's performance in France and a suspected slipper flywheel fault. | 17th Sep 1925 | Box 180 \ M2 \ M2.6 img038 | |
| Secret report detailing the completion of a 10,000-mile car test in France. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img039 | |
| Vehicle handiness, comfort, and significant mechanical failures concerning the front springs. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img040 | |
| Component failures and performance issues with shock absorbers, rear springs, and the steering box support during testing. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img041 | |
| Issues with a car's running, including front wheel brakes and steering. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img042 | |
| Issues with steering, braking, and carburation during a vehicle trial. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img043 | |
| Engine running faults including valve clearance variations, carburation irregularities, and issues with the Autovac system. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img044 | |
| The petrol system and failures in the electrical equipment, including the dynamo and Klaxon horn wire. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img045 | |
| Vehicle component performance, detailing issues with insulation, fuse box accessibility, ignition points, lamps, and engine vibrations. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img046 | |
| Test report evaluating the engine, lubrication, cooling, and bodywork of a vehicle model. | 22th Sep 1925 | Box 180 \ M2 \ M2.6 img047 | |
| Test report detailing failures with the front wings, clutch slippage, and engine vibration. | 26th Feb 1930 | Box 180 \ M2 \ M2.6 img048 | |
| Table detailing daily vehicle runs, including distance, time, petrol consumption, speed, and mileage per gallon. | 26th Feb 1930 | Box 180 \ M2 \ M2.6 img049 | |
| Twisted front axle discovered after a 10,000-mile test in France. | 1st Sep 1925 | Box 180 \ M2 \ M2.6 img050 | |
| Parts to be tested on a 20 HP chassis during a 10,000-mile trial. | 29th Jan 1926 | Box 180 \ M2 \ M2.7 img001 | |
| Logistics and timing for a 10,000-mile test of a 20 HP car in France. | 19th Feb 1926 | Box 180 \ M2 \ M2.7 img002 | |
| Travel arrangements during a 10,000-mile test of a 20 HP car in France. | 22th Feb 1926 | Box 180 \ M2 \ M2.7 img003 | |
| Visit to Le Canadel and the specifications of a new 20 HP car. | 3rd Mar 1926 | Box 180 \ M2 \ M2.7 img004 | |
| Continued memorandum regarding the fitting of hydraulic shock absorbers to car 7-EX and arrangements for car EAC.V1ll. | 5th Mar 1926 | Box 180 \ M2 \ M2.7 img005 | |
| Arranging a 10,000-mile test on an experimental chassis for the Sales Department. | 5th Mar 1926 | Box 180 \ M2 \ M2.7 img006 | |
| Logistics and standardization of a 20 HP chassis undergoing a 10,000-mile trial in France. | 6th Mar 1926 | Box 180 \ M2 \ M2.7 img007 | |
| Car's steering and shock absorber performance. | 19th Mar 1936 | Box 180 \ M2 \ M2.7 img008 | |
| List of faults and observations from a vehicle road test, written on hotel letterhead. | 19th Mar 1936 | Box 180 \ M2 \ M2.7 img009 | |
| Correspondence on hotel letterhead discussing brake performance, servo judder, and a shock damper design. | 19th Mar 1936 | Box 180 \ M2 \ M2.7 img010 | |
| Memo discussing design suggestions for a rubber ring, steering column support, and shock dampers. | 22th Apr 1926 | Box 180 \ M2 \ M2.7 img011 | |
| 10,000-mile testing of low-pressure tyres on well base rims for a 20 HP car. | 22th Apr 1926 | Box 180 \ M2 \ M2.7 img012 | |
| The completion of a 10,000-mile test and seeking instructions for the vehicle's return. | 24th Apr 1926 | Box 180 \ M2 \ M2.7 img013 | |
| Summary of faults found during a 10,027-mile endurance test for Chassis IO G.III. | 2nd Apr 1926 | Box 180 \ M2 \ M2.7 img014 | |
| Test mileage log from Chateauroux detailing component failures at specific mileages. | 1st May 1926 | Box 180 \ M2 \ M2.7 img015 | |
| Vehicle performance after 10,000 miles, detailing steering issues and a garage break-in. | 1st May 1926 | Box 180 \ M2 \ M2.7 img016 | |
| Typed memo regarding travel arrangements after investigating a car's 'Phantom steering' in Paris. | 5th May 1926 | Box 180 \ M2 \ M2.7 img017 | |
| The failure of a rear axle on car 10-G-111 in France due to experimental thrust bearings. | 5th May 1926 | Box 180 \ M2 \ M2.7 img018 | |
| 10,000-mile test drive from France, detailing a cracked steering column flange on a 'Phantom' model. | 3rd May 1926 | Box 180 \ M2 \ M2.7 img019 | |
| 10,000-mile test of a 20 HP car in France, noting a cracked steering column flange which confirmed the reliability of the bumping rig. | 7th May 1926 | Box 180 \ M2 \ M2.7 img020 | |
| List of faults noted from daily reports and inspections during a 10,000-mile test on chassis 10-G-3. | 26th May 1926 | Box 180 \ M2 \ M2.7 img021 | |
| List of faults and issues identified on chassis number 10-G-3. | 6th Jun 1926 | Box 180 \ M2 \ M2.7 img022 | |
| 20 HP chassis being prepared for a 10,000-mile test, awaiting modifications to the exhaust system. | 6th Jun 1926 | Box 180 \ M2 \ M2.7 img023 | |
| Gear ratio and operational start date for a 20 HP experimental car. | 8th Feb 1927 | Box 180 \ M2 \ M2.7 img024 | |
| New axle and limitations on gear reduction for the 20 HP car. | 2nd Feb 1927 | Box 180 \ M2 \ M2.7 img025 | |
| The handover of a 'Lorraine Dietrich' car, a subsequent water leak, and its poor condition requiring repairs in Paris. | 11th Apr 1927 | Box 180 \ M2 \ M2.7 img026 | |
| Graph of representative output curves for a standard 20 HP dynamo under various conditions. | 24th Mar 1927 | Box 180 \ M2 \ M2.7 img027 | |
| 'V' series engine oil consumption, comparing piston designs and oil supply methods to bearings. | 1st Apr 1925 | Box 180 \ M3 \ M3.1 img001 | |
| Graph comparing oil consumption at 3/4 full load for different piston and ring configurations on an E.A.C. Engine V Series. | 31th Mar 1925 | Box 180 \ M3 \ M3.1 img002 | |
| Graph comparing oil consumption versus R.P.M. for different piston types in an E.A.C.V series engine. | 31th Mar 1928 | Box 180 \ M3 \ M3.1 img003 | |
| V-series engine oil consumption, testing baffles and piston ring configurations. | 8th Apr 1925 | Box 180 \ M3 \ M3.1 img004 | |
| Oil consumption tests comparing 'L' shaped rings with standard rings. | 1st Jan 1925 | Box 180 \ M3 \ M3.1 img005 | |
| 'V' series piston tests concerning ring configuration, oil consumption, and failures. | 1st Jan 1925 | Box 180 \ M3 \ M3.1 img006 | |
| Oil consumption tests for the 'V' series car conducted in France. | 15th Apr 1926 | Box 180 \ M3 \ M3.1 img007 | |
| Secret internal memo discussing piston ring design and its effect on oil consumption. | 15th Apr 1925 | Box 180 \ M3 \ M3.1 img008 | |
| Comparative oil temperature tests between a 'V' series car and a standard 40/50 HP car. | 30th Apr 1925 | Box 180 \ M3 \ M3.1 img009 | |
| Tests conducted on 'V' series pistons and rings. | 22th Apr 1925 | Box 180 \ M3 \ M3.1 img010 | |
| 'L' shaped piston rings for EAC 'V' Series and Condor engines to address oil consumption issues. | 1st May 1925 | Box 180 \ M3 \ M3.1 img011 | |
| Graph of test bench results showing oil consumption curves for an E.A.C. engine, comparing different piston ring configurations. | 19th May 1925 | Box 180 \ M3 \ M3.1 img012 | |
| Oil consumption issues related to 'L' shaped piston rings and the effect of lapping. | 13th May 1925 | Box 180 \ M3 \ M3.1 img013 | |
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