| Description | Date | Identifier | |
| Query regarding an over-heating complaint on a Phantom III chassis, investigating the cause. | 19th Jul 1938 | Box 96 \ 1 scan0336 | |
| Customer request for a clutch brake for Chassis 3-BT-73. | 21th Jul 1938 | Box 96 \ 1 scan0337 | |
| Follow-up report on an overheating complaint for chassis 3-CP-194, detailing tests and precautionary measures taken. | 21th Jul 1938 | Box 96 \ 1 scan0338 | |
| Noisy twin petrol pumps for two chassis, detailing their replacement and the return of original components. | 8th Aug 1938 | Box 96 \ 1 scan0339 | |
| Overheating complaint for a Phantom III, chassis 3.AZ.216, and potential remedies. | 26th Aug 1938 | Box 96 \ 1 scan0340 | |
| Confirmation of a broken differential casing from chassis GTL-71, a common issue on early Phantom III cars. | 15th Sep 1938 | Box 96 \ 1 scan0341 | |
| The removal of a bevel pinion thrust race from the rear axle of a Phantom III chassis. | 22th Sep 1938 | Box 96 \ 1 scan0342 | |
| Complaints of wheel driver knock or creak on the Phantom III model. | 23th Sep 1938 | Box 96 \ 1 scan0343 | |
| Scatter plot chart of mileage versus chassis number series for complaints of creak or knock in PIII wheel drivers. | 21th Sep 1938 | Box 96 \ 1 scan0344 | |
| Faulty thermostats on Ph.III and 25/30 HP cars and the procedure for their return. | 27th Sep 1938 | Box 96 \ 1 scan0345 | |
| Sample of a water preparation and aluminium washers from the oil cooler of chassis 3-BT-187. | 30th Sep 1938 | Box 96 \ 1 scan0346 | |
| Request for the mileage of a chassis since an HP petrol pump was fitted. | 13th Oct 1938 | Box 96 \ 1 scan0347 | |
| Testing and repair of a radiator matrix unit following a suspected fault. | 13th Oct 1938 | Box 96 \ 1 scan0348 | |
| Report regarding a faulty thermostat on chassis no. 61-MW, which required replacement. | 19th Oct 1938 | Box 96 \ 1 scan0349 | |
| Examination report on a driven plate from a Phantom III, noting cracks in the facings and suggesting re-facing. | 2nd Nov 1938 | Box 96 \ 1 scan0350 | |
| Advisable removal of oil coolers from all Phantom III cars following a reported failure. | 5th Nov 1938 | Box 96 \ 1 scan0351 | |
| The condition of big end bearings in several Phantom III cars, noting satisfactory cases and failures. | 11th Nov 1938 | Box 96 \ 1 scan0352 | |
| Query regarding the cause of oily hand brake shoe liners in relation to Phantom III Complaint Report N.1530. | 22th Nov 1938 | Box 96 \ 1 scan0353 | |
| Report regarding a faulty thermometer on Chassis No. 3-CP-178 which was reading 10 degrees high and subsequently replaced. | 12th Nov 1938 | Box 96 \ 1 scan0354 | |
| The testing of a faulty calorstat unit from chassis No. 61.MW. | 5th Dec 1938 | Box 96 \ 1 scan0355 | |
| Requesting an examination into the cause of a cracked central tube on a Phantom 111 hydraulic damper. | 6th Dec 1938 | Box 96 \ 1 scan0356 | |
| Maximum pressure expected in the Phantom III front damper tube. | 7th Dec 1938 | Box 96 \ 1 scan0357 | |
| Returning an Oil Cooler Matrix for Chassis No. 3-AZ-112 based on Complaint Report No1575. | 7th Dec 1938 | Box 96 \ 1 scan0358 | |
| Cracked 'F' type oil cooler on chassis 3-AZ-144, advising it be returned to the Works. | 14th Dec 1938 | Box 96 \ 1 scan0359 | |
| Defect in an oil cooler for chassis no. 3.AZ.144, caused by excessive machining. | 17th Dec 1938 | Box 96 \ 1 scan0360 | |
| Laboratory analysis report on the hardness, microstructure, and defects of a Phantom III Front Hydraulic Damper central tube. | 19th Dec 1938 | Box 96 \ 1 scan0361 | |
| Laboratory report with two micrographs showing material structures at x300 magnification. | 19th Dec 1938 | Box 96 \ 1 scan0362 | |
| Laboratory report with a micrograph showing oxidised seams on the inner surface of a tube. | 19th Dec 1938 | Box 96 \ 1 scan0363 | |
| Complaint case requesting the examination of an oil cooler matrix, thermometer and oil gauge from chassis 3-CM-199. | 19th Dec 1938 | Box 96 \ 1 scan0364 | |
| Unresolved customer complaints regarding steering and body movement for chassis 3-BT-81. | 20th Dec 1938 | Box 96 \ 1 scan0365 | |
| Continued memo seeking opinions on improving a car's springing, steering, and body movement. | 20th Dec 1938 | Box 96 \ 1 scan0366 | |
| To Sir Herbert Smith regarding the difficulty of improving coupé bodies on chassis 3-BT-81. | 22th Dec 1938 | Box 96 \ 1 scan0367 | |
| The fitting of a heater and defroster for a Phantom III model, chassis 3.DL.156. | 6th Feb 1939 | Box 96 \ 1 scan0368 | |
| Requesting the manufacture and dispatch of heater and defroster parts for a Phantom III 3-DL-156 vehicle to Hooper & Co. for fitting. | 10th Feb 1939 | Box 96 \ 1 scan0369 | |
| Internal memorandum detailing proposed alterations to chassis 3.BT.81 for Sir Herbert Smith to resolve ride and handling issues. | 21th Feb 1939 | Box 96 \ 1 scan0370 | |
| List of required adjustments and tests for steering and suspension components. | 21th Feb 1939 | Box 96 \ 1 scan0371 | |
| Modification to the Phantom III clutch thrust housing. | 7th Mar 1939 | Box 96 \ 1 scan0372 | |
| Request to examine worn clutch linings from Lord Rea's car and to comment on the owner's driving habits. | 8th Mar 1939 | Box 96 \ 1 scan0373 | |
| Clutch issue on chassis 3-AZ-226 for The Rt. Hon. Lord Rea, attributing the fault to driver mal-treatment. | 9th Mar 1939 | Box 96 \ 1 scan0374 | |
| Correspondence regarding a confirmed failure due to mal-treatment on Chassis 3.AZ.226 belonging to The Rt. Hon. Lord Rea. | 10th Mar 1939 | Box 96 \ 1 scan0375 | |
| Modifications to a Phantom III Coupe body to resolve issues of 'shake and dither'. | 15th Mar 1939 | Box 96 \ 1 scan0376 | |
| Fitting a harmonic bumper to the Phantom III to control frame oscillation and shimmy. | 15th Mar 1939 | Box 96 \ 1 scan0377 | |
| Inquiry regarding suitable springs for Phantom III chassis 3.DL.152, to be fitted with a 5-seater Touring Limousine body from chassis 39-EX. | 16th Mar 1939 | Box 96 \ 1 scan0378 | |
| The weight of a specially light body for the Phantom III, chassis 39.EX. | 21th Mar 1939 | Box 96 \ 1 scan0379 | |
| Complaint report requesting the return of worn roller cones and cages from chassis steering for inspection. | 3rd Apr 1939 | Box 96 \ 1 scan0380 | |
| Complaint about defective roller cones and cages on chassis 3-DL-106. | 4th Apr 1939 | Box 96 \ 1 scan0381 | |
| Letter discussing the potential exchange of a car for an older model plus a cheque. | | Box 96 \ 1 scan0382 | |
| Letter to The Honourable W. Bethell regarding the possibility of acquiring a smaller, newer car model like the Wraith after an exchange. | 5th Apr 1939 | Box 96 \ 1 scan0383 | |
| Sir Herbert Smith Bt.'s chassis, stating the issue is now a sales problem, not an engineering one. | 19th Apr 1939 | Box 96 \ 1 scan0384 | |
| Conversation with customer Sir Herbert Smith Bt. regarding steering issues with his car, chassis number 3.BT-81. | 19th Apr 1939 | Box 96 \ 1 scan0385 | |
| Typed internal memorandum regarding advice on a new car body and a potential part-exchange deal. | 19th Apr 1939 | Box 96 \ 1 scan0386 | |
| Letter concerning customer Sir Herbert Smith's dissatisfaction with car 3-BT-81 and its potential sale. | 21th Apr 1939 | Box 96 \ 1 scan0387 | |
| Cover letter forwarding a chauffeur's remarks on No-Co-Ro and hydraulic plunger return springs for chassis 3.AX-97. | 13th May 1939 | Box 96 \ 1 scan0388 | |
| Letter from a chauffeur detailing experiences with a radiator solution and issues with piston assemblies on a Phantom III. | 10th May 1939 | Box 96 \ 1 scan0389 | |
| Page 2 of a chauffeur's report regarding the resolution of a loosening component on chassis 3.AX-97. | 19th May 1939 | Box 96 \ 1 scan0390 | |
| Owners complaint report investigating the failure of a Fabroid idler gear on chassis 3.AX-153. | 19th May 1939 | Box 96 \ 1 scan0391 | |
| Continued report on gear failure analysis, discussing wedging, knocking, stripped teeth, and a change in gear material. | 19th May 1939 | Box 96 \ 1 scan0392 | |
| Acknowledging the conclusions reached regarding a mishap and noting it as an isolated case. | 22th May 1939 | Box 96 \ 1 scan0393 | |
| Investigation into the failure of a Fabroil idler gear, possibly due to material ageing, on chassis g-AZ-172. | 10th Jun 1939 | Box 96 \ 1 scan0394 | |
| Acknowledging the cause of a failure and awaiting recommendations following further tests. | 12th Jun 1938 | Box 96 \ 1 scan0395 | |
| Report investigating idler gear failures on the Phantom III, detailing test results and alternative gear materials. | 8th Jul 1939 | Box 96 \ 1 scan0396 | |
| Report comparing different gear types and recommending a new gear for replacement work based on torque and load data. | 8th Jul 1939 | Box 96 \ 1 scan0397 | |
| Idler gear failures, comparing the reliability of fabroil gears to chain drives used in American cars. | 15th Jul 1939 | Box 96 \ 1 scan0398 | |
| Steering defect discovered on Chassis No. 3-DL-90 during its reconditioning for resale. | 9th Aug 1939 | Box 96 \ 1 scan0399 | |
| Repeated tappet and camshaft trouble on a Phantom III, chassis 3-AX-95, after conversion to solid tappets. | 14th Aug 1939 | Box 96 \ 1 scan0400 | |
| Engine modifications to improve oil circulation and reduce friction. | 14th Aug 1939 | Box 96 \ 1 scan0401 | |
| Hand-drawn diagrams illustrating modifications to the Phantom III tappet mechanism. | 18th Aug 1934 | Box 96 \ 1 scan0402 | |
| Camshaft and tappets for the Phantom III model, referencing file 1113. | 18th Aug 1934 | Box 96 \ 1 scan0403 | |
| Owners Complaint Report No. W.363 regarding persistent tappet trouble and recommended modifications for chassis 3.AX-11. | 24th Aug 1939 | Box 96 \ 1 scan0404 | |
| Letter discussing Phantom III engine oil issues, comparing Castrol XL and Mobiloil Arctic viscosities. | 8th Oct 1939 | Box 96 \ 1 scan0405 | |
| Response to Colonel Bristow regarding a drop in oil pressure attributed to the fluidity of Arctic oil. | 10th Oct 1939 | Box 96 \ 1 scan0406 | |
| Drawings for the 'Spectre' engine, detailing valve lift, tappets, and a revised compression ratio. | 24th Jan 1934 | Box 96 \ 2 scan0001 | |
| Cancelling a ball valve design for Spectre Hydraulic Valve Adjusters, substituting it with a conical headed plunger. | 11th Apr 1934 | Box 96 \ 2 scan0002 | |
| Clarifying the selection of tappets for the Spectre engine, comparing the hydraulic and Halford types. | 15th May 1934 | Box 96 \ 2 scan0003 | |
| List of features to be incorporated in the design of self-adjusting tappets for the Spectre engine. | 29th May 1934 | Box 96 \ 2 scan0004 | |
| Updates and design features for the Spectre Self-Adjusting Tappets. | 29th Jun 1934 | Box 96 \ 2 scan0005 | |
| Request for modifications to whitemetal eccentrics clearance and the supply of weaker plunger return springs for trial. | 4th Jul 1934 | Box 96 \ 2 scan0006 | |
| Clearances and spring modifications for Spectre Self-Adjusting Tappets. | 4th Jul 1934 | Box 96 \ 2 scan0007 | |
| Requesting an urgent adjustment to the valve timing on the Spectre Unit. | 5th Jul 1934 | Box 96 \ 2 scan0008 | |
| Specification for the manufacture of a set of Spectre Self-Adjusting Tappets. | 6th Sep 1934 | Box 96 \ 2 scan0009 | |
| Issues with the Spectre valve gear, including valve bounding and limitations of lead bronze bearings. | 12th Sep 1934 | Box 96 \ 2 scan0010 | |
| Results of spring tests to determine the critical speed on Spectre. | 12th Sep 1934 | Box 96 \ 2 scan0011 | |
| Instructing the modification and lightening of Spectre valves, particularly the exhaust valve. | 14th Sep 1934 | Box 96 \ 2 scan0012 | |
| Drawing LeC.4113 for a weight-reduced inlet and exhaust valve for Spectre Valves. | 24th Sep 1934 | Box 96 \ 2 scan0013 | |
| Spectre Double Valve Springs for use with a short duration camshaft, noting required head modifications. | 28th Sep 1934 | Box 96 \ 2 scan0014 | |
| Fitting strengthened valve springs to a Spectre No. 2 unit. | 14th Nov 1934 | Box 96 \ 2 scan0015 | |
| Instructions for modifications to self-adjusting tappets for the Spectre project. | 12th Dec 1934 | Box 96 \ 2 scan0016 | |
| Alteration of details for silent tappets for the Spectre. | 17th Dec 1934 | Box 96 \ 2 scan0017 | |
| Production challenges and requests for silent tappets on the Phantom model. | 18th Jan 1935 | Box 96 \ 2 scan0018 | |
| Comparison of wear on Spectre and Phantom tappets, referencing their different lubrication methods. | 18th Jan 1935 | Box 96 \ 2 scan0019 | |
| Comparison of engine component specifications for the Spectre and Phantom models. | 18th Jan 1935 | Box 96 \ 2 scan0020 | |
| Spectre bottom tappet wear and a proposed camshaft modification to reduce rubbing velocity. | 21th Jan 1935 | Box 96 \ 2 scan0021 | |
| Tappet wear on the Spectre Valve Gear and proposing a spring redesign. | 24th Jan 1935 | Box 96 \ 2 scan0022 | |
| Specification note for fitting self-adjusting tappets to Spectre units. | 5th Feb 1935 | Box 96 \ 2 scan0023 | |
| The manufacturing difficulties of Spectre Bottom Tappets due to camshaft grinding limitations. | 12th Feb 1935 | Box 96 \ 2 scan0024 | |
| Secret memo regarding design changes to the Spectre engine roller tappets and camshaft. | 11th Feb 1935 | Box 96 \ 2 scan0025 | |
| Secret memo discussing the failure of Spectre valve springs and requesting a new design and testing rig. | 23th Feb 1935 | Box 96 \ 2 scan0026 | |
| Possible alterations to address Spectre tappet wear. | 23th Feb 1935 | Box 96 \ 2 scan0027 | |
| Request to manufacture Spectre Bottom Tappets from three different specified materials for testing purposes. | 26th Feb 1935 | Box 96 \ 2 scan0028 | |
| Modifications and testing procedures for Spectre tappets. | 27th Feb 1935 | Box 96 \ 2 scan0029 | |
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