| Description | Date | Identifier | |
| Engine pre-ignition, spark plug issues, and performance feedback on braking and shock dampers. | 10th Mar 1930 | Box 5a \ 2 02-page221 | |
| 20-HP car testing issues, including crankcase pressure, oil leaks from the fan pulley and rocker cover, and steering problems. | 18th Mar 1930 | Box 5a \ 2 02-page222 | |
| Letter discussing extended vehicle testing in France, dispatch of new parts, and investigating an exhaust valve issue. | 18th Mar 1930 | Box 5a \ 2 02-page223 | |
| Extension of a 20/25 HP 10,000-mile test in France, parts standardization, and modifications. | 17th Mar 1930 | Box 5a \ 2 02-page224 | |
| Requesting an examination of a servo on a 20 HP car due to a woven cotton lining failure. | 20th Mar 1930 | Box 5a \ 2 02-page225 | |
| Faults found after 9,000 miles, detailing oiling problems on the front axle and issues with exhaust valve clearances. | 20th Mar 1930 | Box 5a \ 2 02-page226 | |
| The inspection and modification of a rear shock-absorber and back axle, with notes on future testing. | 20th Mar 1930 | Box 5a \ 2 02-page227 | |
| Diagram with handwritten notes illustrating the cause of failure to a lubrication system. | 21th Mar 1930 | Box 5a \ 2 02-page228 | |
| Letter to G.W. Hancock seeking confirmation on spark plug types and acknowledging reported oil leaks. | 21th Mar 1930 | Box 5a \ 2 02-page229 | |
| Letter about finishing work on a car, awaiting exhaust fittings and sourcing Shell oil from Paris. | 21th Mar 1930 | Box 5a \ 2 02-page230 | |
| Response letter regarding vehicle issues including lubrication failure, a damaged valve, and suspected pre-ignition. | 22th Mar 1930 | Box 5a \ 2 02-page231 | |
| Failure of an exhaust valve on a 20 HP car, requesting an analysis of the steel. | 22th Mar 1930 | Box 5a \ 2 02-page232 | |
| Response letter detailing investigations into servo, steering pivot oil stoppage, and exhaust valve clearance issues. | 22th May 1930 | Box 5a \ 2 02-page233 | |
| Responding to a telegram about ignition plug issues and signs of pre-ignition. | 22th Feb 1930 | Box 5a \ 2 02-page234 | |
| Engine detonation issues with new spark plugs and problems fitting a new silencer flange and bracket. | 23th Mar 1930 | Box 5a \ 2 02-page235 | |
| Letter to G.W. Hancock discussing steering tube lubrication, spark plug usage, and requesting vehicle speed data. | 24th Mar 1930 | Box 5a \ 2 02-page236 | |
| Letter discussing potential spark plug issues and sending new Lodge plugs for testing and reporting. | 24th Mar 1930 | Box 5a \ 2 02-page237 | |
| To stores regarding the despatch of nine type MC3 Lodge Plugs to France. | 24th Mar 1930 | Box 5a \ 2 02-page238 | |
| Responding to an enquiry about brake wear after fitting reduced leverage to the rear brakes. | 24th Mar 1930 | Box 5a \ 2 02-page239 | |
| Letter discussing failures in the lubrication system, ignition plugs, and a sliding exhaust joint. | 24th Mar 1930 | Box 5a \ 2 02-page240 | |
| Cross-section drawing of an Enots nipple with a filter, showing gauze, felt and plate components. | 24th Mar 1930 | Box 5a \ 2 02-page241 | |
| Drawing of an exhaust sliding joint with a handwritten annotation for support. | 24th Mar 1930 | Box 5a \ 2 02-page242 | |
| Diagram illustrating the cross-binding effect in an exhaust sliding joint. | 24th Mar 1930 | Box 5a \ 2 02-page243 | |
| Drawing of a fabricated bracket and tube assembly with dimensions and annotations. | 26th Mar 1930 | Box 5a \ 2 02-page244 | |
| Jamming issue with an exhaust sliding joint caused by a bend in the pipe. | 25th Mar 1930 | Box 5a \ 2 02-page245 | |
| Letter responding to a report about engine detonations, magneto vs battery ignition, and spark plugs. | 25th Mar 1930 | Box 5a \ 2 02-page246 | |
| Response to a customer regarding the incorrect assembly of a front axle lubricator and issues with ignition plugs. | 26th Mar 1930 | Box 5a \ 2 02-page247 | |
| Discussion concerning issues with a sliding exhaust joint and proposed solutions including a new sleeve. | 26th Mar 1930 | Box 5a \ 2 02-page248 | |
| Sagging pipe issue with the Phantom silencer and a proposed solution using a stay. | 26th Mar 1930 | Box 5a \ 2 02-page249 | |
| Reporting the drop in gearbox height after a 3,000-mile test. | 26th Mar 1930 | Box 5a \ 2 02-page250 | |
| Correcting a mistake about ignition plugs and detailing a failure and redesign of an exhaust sliding joint. | 26th Mar 1930 | Box 5a \ 2 02-page251 | |
| Request to manufacture two replacement sliding joints, Detail E.55914, in different bronze alloys for a 20 HP silencer. | 26th Mar 1930 | Box 5a \ 2 02-page252 | |
| Lubrication issue with shock damper connecting links and a recommended modification. | 27th Mar 1930 | Box 5a \ 2 02-page253 | |
| Blueprint detailing connecting-tube lubrication tests and modifications for 20 HP rear dampers. | 27th May 1932 | Box 5a \ 2 02-page254 | |
| Valve testing, French petrol detonation, and arranging a meeting at Le Bourget with new exhaust parts. | 27th Mar 1930 | Box 5a \ 2 02-page255 | |
| Engine detonations becoming objectionable during a 10,000-mile test on a 20/25 model. | 27th Mar 1930 | Box 5a \ 2 02-page256 | |
| Exhaust sliding joint seizure, a proposed fix, and observations on engine detonations and carbon build-up. | 27th Mar 1930 | Box 5a \ 2 02-page257 | |
| Letter responding to remarks, detailing issues with a non-standard lubricator, valve failure, and a sliding exhaust pipe joint. | 28th Mar 1930 | Box 5a \ 2 02-page258 | |
| Telegram from Chateauroux confirming a sliding joint is working but the Enots lubricator is not to drawing G 53803. | 14th May 1930 | Box 5a \ 2 02-page259 | |
| Decarbonizing interval for the 20/25 HP car and issues with the exhaust system. | 28th Mar 1930 | Box 5a \ 2 02-page260 | |
| Gearbox height dropping after mileage and the proposal of a support cross-member. | 28th Mar 1930 | Box 5a \ 2 02-page261 | |
| Typed letter to G.W. Hancock in France confirming a meeting in Sevres about redesigned exhaust and sliding joint parts. | 23th Mar 1930 | Box 5a \ 2 02-page262 | |
| Telegram from Hancock confirming arrival in Paris. | 31th Oct 1933 | Box 5a \ 2 02-page263 | |
| The examination of vehicle 14-G4 in France after 10,000 miles of running. | 31th Mar 1930 | Box 5a \ 2 02-page264 | |
| 10,000-mile report on the performance and wear of the 14.GIV engine and components. | 26th Mar 1930 | Box 5a \ 2 02-page265 | |
| Condition and issues of various engine components following mileage tests. | 26th Mar 1930 | Box 5a \ 2 02-page266 | |
| Condition report on various vehicle components including the clutch, gearbox, brakes, and axles. | 26th Mar 1930 | Box 5a \ 2 02-page267 | |
| Inspection report detailing the condition of chassis components including brakes, springs, steering, and shock absorbers. | 26th Mar 1930 | Box 5a \ 2 02-page268 | |
| The condition of various vehicle components following a trip. | 26th Mar 1930 | Box 5a \ 2 02-page269 | |
| Status and modifications of various vehicle components, including brakes, wiper, lights, and bodywork. | 1st Apr 1930 | Box 5a \ 2 02-page270 | |
| Nineteenth report of the Design Committee regarding a 10,000-mile test on the 14-C4 model. | 1st Apr 1930 | Box 5a \ 2 02-page271 | |
| Telegram requesting a complete set of new piston-rings for a 14 G IV. | 11th Jun 1936 | Box 5a \ 2 02-page272 | |
| Telegram message received by telephone concerning new pistons. | 2nd Apr 1930 | Box 5a \ 2 02-page273 | |
| Report from Chateauroux on the performance of a new sliding joint, crankcase pressure issues, and a dangerous garage door. | 3rd Apr 1930 | Box 5a \ 2 02-page274 | |
| Telegram from Hancock reporting on the poor condition of exhaust valves and their replacement. | 9th Jun 1930 | Box 5a \ 2 02-page275 | |
| Reporting on the performance of a sliding joint and the completion of mileage tests. | 4th Apr 1930 | Box 5a \ 2 02-page276 | |
| To G. W. Hancock regarding his return to Derby and the logistics for cars 14-G4 and 23-EX. | 4th Apr 1930 | Box 5a \ 2 02-page277 | |
| Recurring issues with burnt exhaust valves and comparing them with other valve types. | 5th Apr 1930 | Box 5a \ 2 02-page278 | |
| Post Office telegram from Hancock in Chateauroux regarding a delayed arrival in Derby. | 11th Jun 1906 | Box 5a \ 2 02-page279 | |
| Letter detailing delays in returning a car to Derby due to late delivery of piston rings and transport logistics. | 6th Apr 1930 | Box 5a \ 2 02-page280 | |
| Arranging the trial of car 14-G4 after it completed 14,000 miles. | 14th Apr 1930 | Box 5a \ 2 02-page281 | |
| Arranging for the testing of car 14-G4, with handwritten performance notes. | 14th Apr 1930 | Box 5a \ 2 02-page282 | |
| Instruction memo to fit a lower radiator cap and altered clutch pedal leverage, and to inspect a rear spring. | 24th Apr 1930 | Box 5a \ 2 02-page283 | |
| Request for modifications to the 20 HP car exhaust and clutch systems following a 10,000-mile test. | 24th Apr 1930 | Box 5a \ 2 02-page284 | |
| Inspection and test report on Experimental Car 14-G-4 after a 10,000-mile test. | 25th Apr 1930 | Box 5a \ 2 02-page285 | |
| Road test feedback and performance observations on various vehicle components. | 25th Apr 1930 | Box 5a \ 2 02-page286 | |
| Request for the electrical equipment from chassis 14-GIV for examination following a 10,000-mile test. | 25th Apr 1930 | Box 5a \ 2 02-page287 | |
| Requesting updates on the testing of two 10,000-mile cars, focusing on specific components. | 26th Apr 1930 | Box 5a \ 2 02-page288 | |
| The sending of car 14-G4 to London for trial and to review the lower radiator cap for standardisation. | 28th Apr 1930 | Box 5a \ 2 02-page289 | |
| Responding to technical points raised from a 10,000-mile road test on the 14-G4 model. | 29th Apr 1930 | Box 5a \ 2 02-page290 | |
| Clarifying petrol consumption figures for the 20/25 HP high compression car. | 29th Apr 1930 | Box 5a \ 2 02-page291 | |
| Enquiring when a car can be returned for a strip-down examination. | 5th May 1930 | Box 5a \ 2 02-page292 | |
| The delayed delivery of the experimental 20/25 car, reference 14-G-4. | 6th May 1930 | Box 5a \ 2 02-page293 | |
| Confirming a car is in use over the weekend and will be returned on Monday. | 6th May 1930 | Box 5a \ 2 02-page294 | |
| Sending Experimental Car 14-G-4 to coachbuilder Hoopers to fix body rattles caused by broken front wing stays. | 8th May 1930 | Box 5a \ 2 02-page295 | |
| Letter regarding the return of experimental car 14-G-4 and a sample Paxon air cushion for evaluation. | 12th May 1930 | Box 5a \ 2 02-page296 | |
| Feedback from sales officials on a test car's performance and issues following test runs. | 12th May 1930 | Box 5a \ 2 02-page297 | |
| Discussion concerning the noise made by brakes when coming to a stop. | 28th May 1930 | Box 5a \ 2 02-page298 | |
| Status and handover of chassis 14-G-4. | 28th May 1930 | Box 5a \ 2 02-page299 | |
| Modifications and future use of a car, either for sale, experimental work, or as a demonstration vehicle. | 23th May 1930 | Box 5a \ 2 02-page300 | |
| The urgent fitting of new wing and headlamp brackets to a 25 HP car. | 30th May 1930 | Box 5a \ 2 02-page301 | |
| Examination of a 20 HP car's headlamp brackets and wing stays. | 24th Jun 1930 | Box 5a \ 2 02-page302 | |
| Typed memo enquiring if chassis 14-G4 is still required for experimental work or if it can be released. | 25th Jun 1930 | Box 5a \ 2 02-page303 | |
| The reduction in diameter and standardization of headlamp brackets for chassis 14-G4. | 8th Jul 1930 | Box 5a \ 2 02-page304 | |
| Letter regarding the approval for the appearance of a Phantom II type head-lamp bracket on a 20/25 HP chassis. | 23th Jun 1930 | Box 5a \ 2 02-page305 | |
| The fitting of modified lamp brackets to car 14-G4 and its handover to the Repair Department. | 22th Jul 1930 | Box 5a \ 2 02-page306 | |
| Communication regarding the urgent sale of chassis 14-G4, requesting its release from the experimental department. | 18th Jul 1930 | Box 5a \ 2 02-page307 | |
| Blank document page with a handwritten reference number and date in the top right corner. | 18th Sep 1914 | Box 5a \ 2 02-page308 | |
| Test report on a 14-34 model vehicle after 13,230 miles, covering steering, brakes, clutch, and engine performance. | 8th Apr 1931 | Box 5a \ 2 02-page309 | |
| The performance and durability of various vehicle components after extensive mileage. | 5th Apr 1930 | Box 5a \ 2 02-page310 | |
| The clearance of the clutch trunnion sleeve for 25 HP and Phantom II models. | 22th Nov 1930 | Box 5a \ 2 02-page311 | |
| Letter detailing test requirements and modifications for a car, focusing on a boom at 40 MPH, swan neck vibration, and shock absorbers. | 27th Nov 1930 | Box 5a \ 2 02-page312 | |
| Travel to France to address complaint reports and conduct experimental work. | 27th Nov 1930 | Box 5a \ 2 02-page313 | |
| Reporting on car performance during a run in France, noting issues with steering joggle and booming. | 29th Nov 1930 | Box 5a \ 2 02-page314 | |
| Letter detailing repair work, diagnostics, and findings for chassis 18.S.IV. | 30th Nov 1930 | Box 5a \ 2 02-page315 | |
| List of complaints and findings for chassis 16-G4, detailing issues with steering, starter motor, talkgage, luggage carrier, lubrication, and injection pipe. | 4th Dec 1930 | Box 5a \ 2 02-page316 | |
| Solution for the rubber fan belt fouling the dynamo oil pipe under scheme 1245. | 4th Dec 1930 | Box 5a \ 2 02-page317 | |
| List of complaints and fault findings for chassis 18-G4. | 4th Dec 1930 | Box 5a \ 2 02-page318 | |
| Modification to prevent the rubber fan belt from fouling the dynamo oil pipe on scheme 1245. | 4th Dec 1930 | Box 5a \ 2 02-page319 | |
| Failed windscreen wiper, petrol consumption, and axle issues for chassis 18-9-IV. | 4th Dec 1930 | Box 5a \ 2 02-page320 | |
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