| Description | Date | Identifier | |
| Page 2 of a memo noting issues with steering wheel joggle and rear silencer spitting. | 1st Sep 1931 | Box 11 \ 3 03-page522 | |
| Test report on the 25-EX vehicle during trials in France, detailing handling, performance, and suspension characteristics. | 1st Sep 1931 | Box 11 \ 3 03-page523 | |
| Road tests concerning suspension and steering issues, particularly the effect of tyre pressures. | 1st Sep 1931 | Box 11 \ 3 03-page524 | |
| 10,000 miles test on a 25-EX model, detailing lubrication failure on rear shock damper ball joints and issues with a sticking servo. | 1st Sep 1931 | Box 11 \ 3 03-page525 | |
| Redesign of the radiator and bonnet movement, noting that previously sent rubbers were useless. | 2nd Sep 1931 | Box 11 \ 3 03-page526 | |
| Arranging for an employee to test a 25-EX car in France to appreciate its springing and address customer satisfaction issues. | 2nd Sep 1931 | Box 11 \ 3 03-page527 | |
| Letter discussing the extended testing of car 25-EX in France and justifying the need for it. | 2nd Sep 1931 | Box 11 \ 3 03-page528 | |
| From G.W. Hancock detailing the failure of a Bijur pump on vehicle 19-G4 and modifications made to vehicle 25-EX. | 2nd Sep 1931 | Box 11 \ 3 03-page529 | |
| Features fitted to car 25-EX, its performance, and a recommendation for its return to England. | 4th Mar 1931 | Box 11 \ 3 03-page530 | |
| Letter discussing which features from the 25-EX experimental car to standardize, with a particular concern about the bonnet fitting. | 7th Sep 1931 | Box 11 \ 3 03-page531 | |
| Methods for improving engine cooling by fitting a louvred bonnet, recommended for hot countries. | 7th Sep 1931 | Box 11 \ 3 03-page532 | |
| Letter from Chateauroux, France, responding to a memo about criticisms of car 25-LX, specifically regarding bonnet knocks and radiator suspension. | 2nd Sep 1931 | Box 11 \ 3 03-page533 | |
| Cross steering tube load issue, wear on a ball pad, and the potential need for a new design. | 10th Sep 1931 | Box 11 \ 3 03-page534 | |
| Letter requesting a severe hammering test be performed on two sets of front road springs for confirmatory life-cycle evidence. | 10th Sep 1931 | Box 11 \ 3 03-page535 | |
| The collection of car 26-EX in Paris and the examination of its cross steering tube. | 15th Sep 1931 | Box 11 \ 3 03-page536 | |
| Typed message to Hancock in France concerning the arrival of car 25-EX and a request for a spare radiator. | 16th Sep 1931 | Box 11 \ 3 03-page537 | |
| Post Office Telegraph confirming an arrival in Derby on Sunday. | 17th Sep 1944 | Box 11 \ 3 03-page538 | |
| The contents of two telegrams regarding the arrival of car 25 EX in Derby. | 17th Sep 1931 | Box 11 \ 3 03-page539 | |
| Report comparing the springing and steering performance of cars 25-EX and 31-GX for continental use. | 18th Sep 1931 | Box 11 \ 3 03-page540 | |
| Springing, shock absorbers, and damping of the 25-EX model. | 22th Sep 1931 | Box 11 \ 3 03-page541 | |
| Attached chart of top water and air temperatures for the 25-EX car in France. | 22th Sep 1931 | Box 11 \ 3 03-page542 | |
| Chart showing sparking plug temperatures for an Eagle II aero engine across twelve cylinders. | 2nd Jan 1928 | Box 11 \ 3 03-page543 | |
| The investigation and adjustments made to car 24-EX following a steering complaint. | 22th Nov 1931 | Box 11 \ 3 03-page544 | |
| Engine component condition report for No. 21 Unit (25-EX. Chassis) after a 30,000 miles test on Shell Oil. | 24th Nov 1931 | Box 11 \ 3 03-page545 | |
| Inspection report detailing the condition of various engine components following a test. | 26th Nov 1931 | Box 11 \ 3 03-page546 | |
| Chassis inspection report after a 30,000-mile test, detailing wear and tear on various components. | 26th Nov 1931 | Box 11 \ 3 03-page547 | |
| Vehicle condition report detailing wear and faults on various components. | 9th Dec 1931 | Box 11 \ 3 03-page548 | |
| Condition of engine components following a 25,000-mile strip-down test using Aero Shell oil. | 9th Dec 1931 | Box 11 \ 3 03-page549 | |
| Condition report on the chassis, including the front and rear axles, brakes, steering, clutch, and gearbox. | 9th Dec 1931 | Box 11 \ 3 03-page550 | |
| Inspection report on the condition of road springs and hydraulic shock dampers. | 9th Dec 1931 | Box 11 \ 3 03-page551 | |
| Summary of car issues including brake wear, failing drip plugs, and crankshaft bearing trouble. | 9th Dec 1931 | Box 11 \ 3 03-page552 | |
| Technical report on the testing of different radiator configurations, radiator shutters, and bonnet fittings. | 9th Dec 1931 | Box 11 \ 3 03-page553 | |
| Modifications and performance notes on radiator mounting, brakes, axles, and steering components. | 9th Dec 1931 | Box 11 \ 3 03-page554 | |
| Damper performance, component wear, and oiling system issues. | 9th Dec 1931 | Box 11 \ 3 03-page555 | |
| The performance and modifications of the accelerator pedal, road springs, and petrol pump. | 1st Oct 1917 | Box 11 \ 3 03-page556 | |
| Graph plotting air and water temperatures against vehicle speed over several numbered laps. | 1st Oct 1917 | Box 11 \ 3 03-page557 | |
| Graph plotting various water and air temperatures over three laps during a series of tests at 60 MPH. | 17th Jul 1930 | Box 11 \ 3 03-page558 | |
| Graph plotting temperature data from tests with car 24 EX on the Montlhery Track. | 17th Jul 1930 | Box 11 \ 3 03-page559 | |
| List of vehicle components and modifications for a job identified as 'Kirby'. | 17th Jul 1930 | Box 11 \ 3 03-page560 | |
| Providing a reference to the location of previous files. | 1st Apr 1932 | Box 11 \ 4 04-page001 | |
| Cover or divider page. | 1st Apr 1932 | Box 11 \ 4 04-page002 | |
| Arrangements for a 10,000-mile test of a Phantom car in France, listing its new components. | 24th Mar 1932 | Box 11 \ 4 04-page003 | |
| Test report and specification list for the 19-EX car, intended for a 10,000-mile test in France. | 22th Apr 1932 | Box 11 \ 4 04-page004 | |
| List of specifications and modifications for chassis, engine, and electrical components, including details on cost savings. | 22th Apr 1932 | Box 11 \ 4 04-page005 | |
| The fitting of permanent D.W.S. jacks to car 19-EX due to customer demand and a timeline for a 10,000-mile test. | 22th Apr 1932 | Box 11 \ 4 04-page006 | |
| Various mechanical issues encountered during a car journey to Chateauroux, France. | 23th Apr 1932 | Box 11 \ 4 04-page007 | |
| Diagnosis and temporary solution for a phenomenon where the top gear selector rod gets stuck. | 25th Apr 1932 | Box 11 \ 4 04-page008 | |
| Confirmation via wire of G.W. Hancock's arrival at Le Canadel with car 19-EX. | 26th Apr 1932 | Box 11 \ 4 04-page009 | |
| Issues with synchromesh gears and the carburettor during road testing. | 29th Apr 1932 | Box 11 \ 4 04-page010 | |
| The petrol pump's inability to lift fuel from the reserve tank under certain conditions. | 4th May 1932 | Box 11 \ 4 04-page011 | |
| Report from G.W. Hancock regarding 25 HP sparking plugs. | 4th May 1932 | Box 11 \ 4 04-page012 | |
| Vehicle inspection for a client, Sir Henry, covering misfiring diagnostics and gearbox issues. | 1st May 1932 | Box 11 \ 4 04-page013 | |
| Technical report detailing various vehicle faults and performance observations on components like the carburettor, suspension, and engine. | 1st May 1932 | Box 11 \ 4 04-page014 | |
| Issues with bonnet fasteners, torque reaction dampers, and jack/number plate clearance found during road trials. | 2nd May 1932 | Box 11 \ 4 04-page015 | |
| Telegram to Hancock in France from Hives requesting an explanation for overdue test reports. | 2nd May 1932 | Box 11 \ 4 04-page016 | |
| Telegram received by telephone reporting the completion of an 1854-mile journey. | 2nd May 1932 | Box 11 \ 4 04-page017 | |
| Telegram from Hancock to Hives reporting on mileage covered during a test run. | 2nd May 1932 | Box 11 \ 4 04-page018 | |
| Progress report from a vehicle test in France, detailing mileage, reasons for delayed reports, and modifications made. | 2nd May 1932 | Box 11 \ 4 04-page019 | |
| Chasing overdue daily reports for an experimental car (19-EX. CAR) undergoing testing in France. | 2nd May 1932 | Box 11 \ 4 04-page020 | |
| Query requesting further details on a binding issue with the Phantom II Synchromesh gears. | 2nd May 1932 | Box 11 \ 4 04-page021 | |
| Car test run detailing modifications and issues with the damper, gearbox, and carburetter. | 3rd May 1932 | Box 11 \ 4 04-page022 | |
| Letter to C.W. Hancock discussing carburetter acceleration lag and crankshaft torsional period test results. | 3rd May 1932 | Box 11 \ 4 04-page023 | |
| Issues with tappets, petrol gauges, brakes, dampers, and bonnet locks. | 3rd May 1932 | Box 11 \ 4 04-page024 | |
| Letter from G.W.H. asking for clarification on conflicting work priorities between cars 19-EX and 24-EX. | 4th May 1932 | Box 11 \ 4 04-page025 | |
| Telegram reporting three bent rocker post rods and requesting a strengthened set as a precaution. | 4th May 1932 | Box 11 \ 4 04-page026 | |
| Bent rocker push rods, engine preignition, and synchromesh gearbox issues. | 4th May 1932 | Box 11 \ 4 04-page027 | |
| Gear disengagement issues and a request for K.L.G. spark plugs to address a pre-ignition problem. | 5th Jul 1935 | Box 11 \ 4 04-page028 | |
| Telegram from Chateauroux to Derby concerning clearance and a follow-up report. | 5th Jul 1935 | Box 11 \ 4 04-page029 | |
| Crankshaft torsional period and brake thumps on the 25 HP car. | 5th May 1932 | Box 11 \ 4 04-page030 | |
| Test results and issues with tappets, gauges, bonnet locks, and dampers on a prototype vehicle. | 5th May 1932 | Box 11 \ 4 04-page031 | |
| Carburettor performance issues, including luffing, poor acceleration, and increased petrol consumption. | 5th May 1932 | Box 11 \ 4 04-page032 | |
| From Robotham to Hancock in France about component clearances and failures. | 5th May 1932 | Box 11 \ 4 04-page033 | |
| Response to a report of bent push rods, seeking more information as the issue could not be replicated on a test engine. | 5th May 1932 | Box 11 \ 4 04-page034 | |
| Internal request to dispatch six complete Phantom II push rods to G.W. Hancock. | 5th May 1932 | Box 11 \ 4 04-page035 | |
| Technical report on carburetter adjustments, exhaust valve issues, and preignition testing from France. | 6th May 1932 | Box 11 \ 4 04-page036 | |
| Increasing the clutch fabric area due to wear from the introduction of a synchromesh gear. | 6th May 1932 | Box 11 \ 4 04-page037 | |
| Oscillation of an undamped petrol gauge needle and its repositioning on the instrument board for testing. | 6th May 1932 | Box 11 \ 4 04-page038 | |
| Instructions for a test run to Paris to try a shimmy shackle and obtain K.L.G. plugs. | 6th May 1932 | Box 11 \ 4 04-page039 | |
| Responding to a letter about various vehicle faults including preignition and shimmy-shackle. | 6th May 1932 | Box 11 \ 4 04-page040 | |
| Typed letter confirming receipt of a telegram regarding a car test run to Paris and obtaining K.L.G. plugs. | 6th May 1932 | Box 11 \ 4 04-page041 | |
| Communication discussing crankshaft torsional period and brake thumps, detailing tests and proposed solutions. | 7th May 1932 | Box 11 \ 4 04-page042 | |
| Dynamo fabric drive failure where driving holes have become elongated. | 7th May 1932 | Box 11 \ 4 04-page043 | |
| Sketch of a dynamo fabric drive component, noting that the holes are elongated. | 8th May 1932 | Box 11 \ 4 04-page044 | |
| Vehicle issues including an engine knock, spring drive load, spark plug performance, and clutch fabric wear. | 8th May 1932 | Box 11 \ 4 04-page045 | |
| Letter to G.W. Hancock regarding issues with the carburetter, exhaust valves, and preignition. | 9th May 1932 | Box 11 \ 4 04-page046 | |
| Technical memorandum regarding the performance and adjustment of an expanding carburetter. | 7th May 1932 | Box 11 \ 4 04-page047 | |
| Overcoming high fuel consumption by adjusting needles for high-speed running. | 9th May 1932 | Box 11 \ 4 04-page048 | |
| Pre-ignition issues causing stretched exhaust valves, with a request for a replacement set and a proposal to try salt-cooled valves. | 9th May 1932 | Box 11 \ 4 04-page049 | |
| Typed memo regarding the dispatch and testing of a slow running jet and mixture adjustment. | 10th May 1932 | Box 11 \ 4 04-page050 | |
| Engine pre-ignition and gearbox problems in car 19-EX, recommending a recall. | 10th May 1932 | Box 11 \ 4 04-page051 | |
| Confirming receipt of correspondence and the sending of a report on 24-EX. | 11th May 1932 | Box 11 \ 4 04-page052 | |
| Telegram from Hancock regarding post-Paris travel arrangements, luggage, and customs. | 12th Aug 1937 | Box 11 \ 4 04-page053 | |
| Telegram received by telephone detailing travel arrangements from France to Derby. | 12th May 1932 | Box 11 \ 4 04-page054 | |
| Telegram received by telephone enquiring whether a car will be returning. | 4th Jun 1929 | Box 11 \ 4 04-page055 | |
| Telegram to Hancock regarding faults with car 19-EX and return instructions. | 11th May 1932 | Box 11 \ 4 04-page056 | |
| Communication to Hancock in France regarding the expected return time of a car. | 12th May 1932 | Box 11 \ 4 04-page057 | |
| Telegram from Chateauroux reporting bent rocker push rods and pronounced pre-ignition, requesting a set of strengthened rods. | 5th May 1932 | Box 11 \ 4 04-page058 | |
| Modifications and test results for a 19-EX carburetter experiencing cutting out issues. | 13th May 1932 | Box 11 \ 4 04-page059 | |
| The failure of a self-lubricating front engine suspension bush and its replacement with a standard bronze bush. | 24th May 1932 | Box 11 \ 4 04-page060 | |
| Completion of a 10,000-mile running test for car 19-EX. | 10th Jun 1932 | Box 11 \ 4 04-page061 | |
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