| Description | Date | Identifier | |
| Noisy tappets and clearance changes for a 35-EX Phantom III engine. | 8th Jun 1937 | Box 92 \ 3 scan0309 | |
| Conditions under which the 35-EX Phantom III engine is liable to stall. | 8th Jun 1937 | Box 92 \ 3 scan0310 | |
| Telegram authorising repairs to be carried out on car 35-EX. | 8th Jun 1937 | Box 92 \ 3 scan0311 | |
| Request to fit mild steel front engine feet and Duprene rubber shock damper glands to chassis 35-EX. | 8th Jun 1937 | Box 92 \ 3 scan0312 | |
| Accompanying a fitting strip report for car 35-EX, requesting an inspection of its parts. | 10th Jun 1937 | Box 92 \ 3 scan0313 | |
| List of part standardizations and other findings resulting from a run in France. | 11th Jun 1937 | Box 92 \ 3 scan0314 | |
| Full analysis of parts from a 15,000-mile test on car 35-MX. | 17th Jun 1937 | Box 92 \ 3 scan0315 | |
| Outcome report of special features tested on a Phantom III, listing parts suitable for standardisation. | 1st May 1937 | Box 92 \ 3 scan0316 | |
| Summary log of various component modifications, tests, and their outcomes. | 1st May 1937 | Box 92 \ 3 scan0317 | |
| List of part modifications and status updates for various vehicle components. | 16th Jun 1937 | Box 92 \ 3 scan0318 | |
| Status and testing report for various vehicle components, including steering and braking systems. | 16th Jun 1937 | Box 92 \ 3 scan0319 | |
| List of component modifications, test results, and status updates. | 16th Jun 1937 | Box 92 \ 3 scan0320 | |
| List of standardised and experimental parts with notes on status and performance. | 16th Jun 1937 | Box 92 \ 3 scan0321 | |
| The status and results of various component tests and modifications. | 16th Jun 1937 | Box 92 \ 3 scan0322 | |
| Outcomes of various component tests and modifications. | 16th Jun 1937 | Box 92 \ 3 scan0323 | |
| Copy of the flywheel teeth after a running-in period in France. | 18th Jun 1937 | Box 92 \ 3 scan0324 | |
| Modifications for rebuilding the steering system on a 35-EX chassis. | 23th Jun 1937 | Box 92 \ 3 scan0325 | |
| The fitting of Lockheed brakes to chassis 35-EX, cancelling a previous instruction. | 24th Jun 1937 | Box 92 \ 3 scan0326 | |
| Requesting the urgent experimental fitting of an additional high-pressure petrol pump. | 2nd Jul 1937 | Box 92 \ 3 scan0327 | |
| Request to fit light type axle shafts and an American Long clutch plate to car 35-EX. | 7th Jul 1937 | Box 92 \ 3 scan0328 | |
| Instruction to set the radiator steam valve for the 35-EX car. | 13th Jul 1937 | Box 92 \ 3 scan0329 | |
| The dimmer switch for instrument lights on the Phantom III 35-EX. | 17th Jul 1937 | Box 92 \ 3 scan0330 | |
| Letter from coachbuilders Park Ward & Co. Ltd regarding the non-receipt of bracing stays for chassis 35-EX. | 22th Jul 1937 | Box 92 \ 3 scan0331 | |
| Unsatisfactory steel rear drums on Phantom Brakes 35-EX causing a judder and requesting the fitting of new C.I. drums. | 10th Sep 1937 | Box 92 \ 3 scan0332 | |
| Outlining four modification jobs to be carried out on car 35-EX. | 16th Sep 1937 | Box 92 \ 3 scan0333 | |
| Instructions for modifying car 35-EX by removing a Cadillac type damper and fitting a standard Phantom III spring drive. | 28th Sep 1937 | Box 92 \ 3 scan0334 | |
| Test run report for car 35-EX to Cornwall, detailing performance, fuel consumption, and issues observed. | 28th Sep 1937 | Box 92 \ 3 scan0335 | |
| The transfer of Phantom III gearbox No. 35-EX to Cricklewood for fitting. | 29th Sep 1937 | Box 92 \ 3 scan0336 | |
| Request to fit a standard fan and clear the body seat rail from the gearbox for car 35-EX. | 29th Sep 1937 | Box 92 \ 3 scan0337 | |
| Modifications to the steering system of car 35-EX, including fitting new parts. | 11th Oct 1937 | Box 92 \ 3 scan0338 | |
| Faults and potential improvements on experimental car 35-EX. | 20th Oct 1937 | Box 92 \ 3 scan0339 | |
| Letter to Messrs. Park Ward & Co. Ltd. requesting the repair account for car 35.EX following an accident, for insurance purposes. | 22th Oct 1937 | Box 92 \ 3 scan0340 | |
| The failure of a Gaco synthetic rubber buffer on the servo drag link of Phantom III chassis 35-EX. | 5th Nov 1937 | Box 92 \ 3 scan0341 | |
| The fitting of a new Borg & Beck Thermoid faced clutch plate to car 35-EX. | 22th Dec 1937 | Box 92 \ 3 scan0342 | |
| Request to fit a trial exhaust silencer from the Servais Silencer Co. to Phantom III car 35-EX. | 23th Dec 1937 | Box 92 \ 3 scan0343 | |
| List of faults and performance notes for car model 35-EX. | 10th Jan 1938 | Box 92 \ 3 scan0344 | |
| Request to fit a set of reduced thickness water coupling plates (E.89188) to the PH.III 35-EX (NO.16 UNIT). | 18th Jan 1938 | Box 92 \ 3 scan0345 | |
| Requesting piston examination for an over-oiling engine and refitting of a customer's rear shock damper. | 10th Feb 1938 | Box 92 \ 3 scan0346 | |
| Petrol consumption tests following adjustments to the carburettor's tilt and fuel level. | 1st Jan 1938 | Box 92 \ 3 scan0347 | |
| Urgent request to change a faulty 'B' side cylinder head on a 35.EX Phantom III due to a water leak. | 21th Feb 1938 | Box 92 \ 3 scan0348 | |
| Requesting the replacement of a burnt-out dynamo on chassis 35-EX. | 4th Mar 1938 | Box 92 \ 3 scan0349 | |
| Requesting modifications to car 35-EX for tests at Brooklands regarding the elimination of oil coolers on Phantom III production. | 28th Apr 1938 | Box 92 \ 3 scan0350 | |
| List of work instructions for modifications to be carried out on the 35.EX Phantom III experimental car. | 2nd May 1938 | Box 92 \ 3 scan0351 | |
| Modification and testing of PH.III oil coolers on the 35-EX car. | 8th Nov 1938 | Box 92 \ 3 scan0352 | |
| Requesting the fitting of a water pump to a car with standard Wraith heater connections. | 29th Dec 1938 | Box 92 \ 3 scan0353 | |
| Proposal to send car unit Phantom III No.15 to the Repair Department for cylinder bore wear measurement. | 27th Apr 1939 | Box 92 \ 3 scan0354 | |
| Potential addition of bonnet shutters and the status of simplified bottom tappets for car 35-EX. | 13th Jun 1939 | Box 92 \ 3 scan0355 | |
| List of required modifications, non-standard features, and parts for car 35.EX. | 15th Jul 1939 | Box 92 \ 3 scan0356 | |
| Decisions made on experimental features for car 35.EX. | 8th Jan 1940 | Box 92 \ 3 scan0357 | |
| Listing modifications and parts to be examined on a car transferred to the Sales department. | 15th Jul 1939 | Box 92 \ 3 scan0358 | |
| The Spectre rear brakes and axle arrangement. | 11th May 1934 | Box 92 \ 4 scan0001 | |
| Adjustments and seal arrangement for Spectre Brakes. | 11th May 1934 | Box 92 \ 4 scan0002 | |
| The 'Spectre' brake differentials of the swinging arm type and a related scheme diagram. | 14th May 1934 | Box 92 \ 4 scan0003 | |
| Modifications to the Spectre's foot brake equaliser linkage and lever. | 31th May 1934 | Box 92 \ 4 scan0004 | |
| Half-size layouts for the Rear Brake Operating Gear for the Spectre model. | 31th May 1934 | Box 92 \ 4 scan0005 | |
| Spectre project's front brake operation and a requested modification to the frame side member. | 5th Jun 1934 | Box 92 \ 4 scan0006 | |
| The Spectre brake operation, detailing the combination of the pull-off-spring bracket and pedal stop. | 6th Jun 1934 | Box 92 \ 4 scan0007 | |
| The Spectre's brake operation, specifically regarding the carrier-lever and compensator for the front brakes. | 16th Jun 1934 | Box 92 \ 4 scan0008 | |
| Modification to the Spectre's rear brake operating cable to resolve an issue with the exhaust pipe. | 18th Jun 1934 | Box 92 \ 4 scan0009 | |
| Modification to the 'Spectre' front brake operating cable equaliser lever. | 18th Jun 1934 | Box 92 \ 4 scan0010 | |
| Design change to the 'Spectre' brake leverages, reducing the foot to cam ratio. | 15th Jun 1934 | Box 92 \ 4 scan0011 | |
| Brake sponge on a Spectre model, suggesting testing cast-iron shoes instead of aluminium. | 15th Sep 1934 | Box 92 \ 4 scan0012 | |
| Technical report on the investigation of spongy 'Spectre' brakes, including measurements and adjustments. | 21th Sep 1934 | Box 92 \ 4 scan0013 | |
| Brake shoe deflection, materials, and design on a 3-B-IV chassis. | 21th Sep 1934 | Box 92 \ 4 scan0014 | |
| List of notes and proposed modifications for the 'Spectre' engine. | 21th Sep 1934 | Box 92 \ 4 scan0015 | |
| Improvements to the 'Spectre' brake adjustment system. | 27th Sep 1934 | Box 92 \ 4 scan0016 | |
| New steel front brake shoes for the Spectre model. | 4th Oct 1934 | Box 92 \ 4 scan0017 | |
| Construction of Spectre rear brake shoes from sheet steel. | 19th Oct 1934 | Box 92 \ 4 scan0018 | |
| Experimental department report on Spectre Brakes, with a recommendation to fit a 40/50 brake system. | 29th Oct 1934 | Box 92 \ 4 scan0019 | |
| Analysis of the high pedal effort and inefficiency of the Spectre braking system. | 29th Oct 1934 | Box 92 \ 4 scan0020 | |
| Braking systems, comparing servos for the Spectre and Phantom models, and proposing improvements. | 29th Oct 1934 | Box 92 \ 4 scan0021 | |
| Efficiency of hydraulic brake systems and providing recommendations for front brakes. | 29th Dec 1934 | Box 92 \ 4 scan0022 | |
| Graph showing the efficiency of direct braking from the pedal to the front brakes for the Spectre model. | 29th Oct 1934 | Box 92 \ 4 scan0023 | |
| Modification to the Spectre Brakes with the addition of pull-off springs. | 29th Oct 1934 | Box 92 \ 4 scan0024 | |
| Experimental department report cover sheet regarding Spectre Brakes and suggestions for an improved layout. | 16th Nov 1934 | Box 92 \ 4 scan0025 | |
| The Spectre model's brake layout, comparing its efficiency to other systems and proposing modifications. | 16th Nov 1934 | Box 92 \ 4 scan0026 | |
| Proposal and justification for trialling a hydraulic braking system, including a suggested layout and mentioning the Girling system for a Bentley. | 16th Nov 1934 | Box 92 \ 4 scan0027 | |
| Brake layout for the Spectre model, specifically the hydraulic and Girling systems. | 22th Nov 1934 | Box 92 \ 4 scan0028 | |
| Proposed mechanism using a wedge for each shoe mounted on rollers. | 22th Nov 1934 | Box 92 \ 4 scan0029 | |
| Modifications to the Spectre model's front brake intermediate lever. | 4th Dec 1934 | Box 92 \ 4 scan0030 | |
| Chassis deflection due to front braking on Bentley & Spectre models. | 18th Dec 1934 | Box 92 \ 4 scan0031 | |
| Chassis deflection tests due to front braking on Bentley and Spectre models. | 18th Dec 1934 | Box 92 \ 4 scan0032 | |
| Chassis frame distortion, welding failure, and comparative analysis of braking and distortion with other vehicles. | 18th Dec 1934 | Box 92 \ 4 scan0033 | |
| The mechanical efficiency of brake system components. | 21th Dec 1934 | Box 92 \ 4 scan0034 | |
| Mechanical efficiency of brake system components, particularly highlighting issues with the Spectre model. | 21th Dec 1934 | Box 92 \ 4 scan0035 | |
| Analysis of efficiency losses in various mechanical components like toggles, cables, and linkage systems. | 21th Dec 1934 | Box 92 \ 4 scan0036 | |
| Analysis of the efficiency and friction of a torsion shaft, pin joints, and levers for the 20/25 front axle. | 21th Dec 1934 | Box 92 \ 4 scan0037 | |
| Graph showing the efficiency of a 20-25 HP back axle brake lever under different loads. | 21th Dec 1934 | Box 92 \ 4 scan0038 | |
| Graph illustrating the efficiency and deflection characteristics of a pin-jointed octagon. | 21th Dec 1934 | Box 92 \ 4 scan0039 | |
| Graph plotting load versus movement and showing the efficiency of a torsion shaft in a front axle. | 21th Dec 1934 | Box 92 \ 4 scan0040 | |
| Graph and table showing the efficiency of a well-oiled Bowden cable. | 21th Dec 1934 | Box 92 \ 4 scan0041 | |
| Graph showing the efficiency of brake toggles for a Bentley, with an oily brake drum. | 21th Dec 1934 | Box 92 \ 4 scan0042 | |
| Series of four graphs plotting the percentage efficiency of a Bowden cable against angle in degrees, tested at four different loads. | 21th Dec 1934 | Box 92 \ 4 scan0043 | |
| Photograph of a mechanical lifting or balancing rig with a hanging weight. | 21th Dec 1934 | Box 92 \ 4 scan0044 | |
| Photograph of a Salter's spring balance scale being used in a test rig with a chain hoist. | 22th Dec 1934 | Box 92 \ 4 scan0045 | |
| Request for a modified front brake assembly for testing on the Spectre model to reduce sponginess. | 22th Dec 1934 | Box 92 \ 4 scan0046 | |
| Revisions to the Spectre brake system linkage and countershaft for the semi-servo system. | 28th Dec 1934 | Box 92 \ 4 scan0047 | |
| Request to remove a Spectre brake from a damaged chassis to test and determine why it is not functioning correctly. | 28th Dec 1934 | Box 92 \ 4 scan0048 | |
| Modifications to the Spectre front brake linkage, specifically the equaliser and carrier levers. | 3rd Jan 1935 | Box 92 \ 4 scan0049 | |
| Authorising a modification to a Spectre's brake shoe for testing purposes. | 18th Jan 1935 | Box 92 \ 4 scan0050 | |
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