| Description | Date | Identifier | |
| Two cases of rivet failure in the balancing arm of the Spectre Servo mechanism. | 21th Jan 1935 | Box 92 \ 4 scan0051 | |
| Experimental department report on a 'sponge' feeling in the front brakes of a Spectre car. | 21th Jan 1935 | Box 92 \ 4 scan0052 | |
| Investigating the cause of poor braking performance and 'sponge' on the Spectre car brakes. | 21th Jan 1935 | Box 92 \ 4 scan0053 | |
| Graph showing the relative movement of the lever and cams for the Spectre front brakes with the drum in position. | 20th Jan 1935 | Box 92 \ 4 scan0054 | |
| Secret memorandum regarding self-locking issues and planned adjustments for the Spectre brakes. | 5th Feb 1935 | Box 92 \ 4 scan0055 | |
| Modifications to the Spectre Girling brakes, particularly concerning the handbrake operation and shoe fulcrums. | 11th Feb 1935 | Box 92 \ 4 scan0056 | |
| Modifications to the Spectre's Girling rear brake linkage and associated components. | 12th Feb 1935 | Box 92 \ 4 scan0057 | |
| Secret internal memo regarding modifications to the Spectre rear brakes. | 12th Feb 1935 | Box 92 \ 4 scan0058 | |
| Request for a delivery date for a Spectre front brake assembly incorporating new schemes. | 13th Feb 1935 | Box 92 \ 4 scan0059 | |
| Design and operation of Girling front brakes for the Spectre model, comparing two schematics. | 15th Feb 1935 | Box 92 \ 4 scan0060 | |
| Meeting minutes discussing brake system policy and designs for the Spectre project. | 19th Feb 1935 | Box 92 \ 4 scan0061 | |
| Meeting notes discussing modifications to the Spectre chassis, brakes, brake pedal, and clutch. | 19th Feb 1935 | Box 92 \ 4 scan0062 | |
| Modifications to clutch and brake pedal levers. | 19th Feb 1935 | Box 92 \ 4 scan0063 | |
| Secret memo regarding a modification to the cross steering lever for Spectre Girling Brakes. | 20th Feb 1935 | Box 92 \ 4 scan0064 | |
| The sponginess in the Spectre front brake adjustment mechanism. | 19th Feb 1935 | Box 92 \ 4 scan0065 | |
| Comparing original and later type Spectre front brake adjustment mechanisms. | 21th Feb 1935 | Box 92 \ 4 scan0066 | |
| Graph showing the relative movement of the lever and cams for the Spectre front brakes under different adjustments. | 19th Feb 1935 | Box 92 \ 4 scan0067 | |
| The Spectre's RR type front brakes with tangent screw adjustment, referencing an associated schematic. | 20th Feb 1935 | Box 92 \ 4 scan0068 | |
| The intermediate front brake lever (N.Sch.4386) for Spectre type brakes with tangent screw adjustment. | 22th Feb 1935 | Box 92 \ 4 scan0069 | |
| Diagram of semi-servo brake leverages for the Spectre model, including a proposed modification. | 22th Feb 1935 | Box 92 \ 4 scan0070 | |
| Modified operating levers and diagrams for the Spectre Girling Brakes. | 22th Feb 1935 | Box 92 \ 4 scan0071 | |
| Modification to the intermediate lever for Girling and Semi-servo brakes on the Spectre project. | 22th Feb 1935 | Box 92 \ 4 scan0072 | |
| List of designs for the revised braking system on the Spectre model. | 6th Mar 1935 | Box 92 \ 4 scan0073 | |
| Confirming the decision to prioritise the revised braking system for the Spectre, specifically for car No. 3. | 19th Mar 1935 | Box 92 \ 4 scan0074 | |
| Secret memo detailing modifications to the Spectre Hand Brake Intermediate Shaft. | 22th May 1935 | Box 92 \ 4 scan0075 | |
| Hand brake mechanism issue on the Spectre III and a proposed temporary solution. | 12th Jun 1935 | Box 92 \ 4 scan0076 | |
| Technical memo discussing brake judder on Spectre models and proposed solutions. | 13th Jun 1935 | Box 92 \ 4 scan0077 | |
| Secret memo regarding a modification to the rear brake linkage on the Spectre model. | 19th Jun 1935 | Box 92 \ 4 scan0078 | |
| To G.W. Hancock regarding brake and clutch adjustments for the Spectre vehicle. | 26th Jun 1935 | Box 92 \ 4 scan0079 | |
| Secret memorandum detailing a modification to the Spectre's hand brake linkage. | 28th Jun 1935 | Box 92 \ 4 scan0080 | |
| Clearance issues and potential modifications for the Spectre's horizontal hand brake lever. | 2nd Jul 1935 | Box 92 \ 4 scan0081 | |
| Secret memo regarding a half size layout of the Spectre rear brake linkage. | 3rd Jul 1935 | Box 92 \ 4 scan0082 | |
| Loss of travel issue with the horizontal hand brake lever for the Spectre model. | 8th Jul 1935 | Box 92 \ 4 scan0083 | |
| Proposal to modify the Spectre's front brake linkage following the fitment of a front roll bar. | 12th Jul 1935 | Box 92 \ 4 scan0084 | |
| Secret memo regarding the substitution of Oilite bushes for needle roller bearings on the Front Brake Actuating Lever for the Spectre frame. | 15th Aug 1935 | Box 92 \ 4 scan0085 | |
| Brake layout modifications for the 'Spectre' model's 2-S-I test in France. | 16th Aug 1935 | Box 92 \ 4 scan0086 | |
| Modification to the brake layout for model 2-S-I for France. | 17th Aug 1935 | Box 92 \ 4 scan0087 | |
| Secret memo detailing proposed modifications to the Spectre model's hand brake cables to prevent fraying. | 20th Aug 1935 | Box 92 \ 4 scan0088 | |
| Letter to Ferodo Limited regarding tests on composite brake drums and servo linings. | 12th Sep 1935 | Box 92 \ 4 scan0089 | |
| Technical discussion on the Phantom III hand brake, addressing issues and comparing performance with other models. | 19th Sep 1935 | Box 92 \ 4 scan0090 | |
| Note about altering the material of a shoe from aluminium to steel. | 19th Sep 1935 | Box 92 \ 4 scan0091 | |
| Outlining an alternative method to reduce the hand brake leverage for car 33-EX. | 21th Sep 1935 | Box 92 \ 4 scan0092 | |
| Design, cooling, and required alterations for Spectre brake drums. | 21th Sep 1935 | Box 92 \ 4 scan0093 | |
| On modifications to the Spectre hand brake linkage to reduce leverage and improve geometry. | 24th Sep 1935 | Box 92 \ 4 scan0094 | |
| Replacement of aluminum hand brake shoes with steel ones for the Phantom III. | 3rd Oct 1935 | Box 92 \ 4 scan0095 | |
| Proposal to trial oilite bushes in the Phantom III rear brake linkage instead of needle roller bearings. | 4th Oct 1935 | Box 92 \ 4 scan0096 | |
| Modifications to the Phantom III brake pedal due to reduced travel from carpets and bending under load. | 15th Oct 1935 | Box 92 \ 4 scan0097 | |
| Issues with automatic brake adjustment and proposing a new system seen on a Birmingham Bus Co. vehicle. | 16th Oct 1935 | Box 92 \ 4 scan0098 | |
| Blueprint diagram of an automatic brake adjustment mechanism. | 17th Oct 1935 | Box 92 \ 4 scan0099 | |
| Tests carried out on a Phantom III car (31-EX) to investigate brake pedal sponge. | 19th Oct 1935 | Box 92 \ 4 scan0100 | |
| Potential braking issues including pedal sponge, carpet interference, and a note on a handbrake fault on car 34-EX. | 6th Nov 1935 | Box 92 \ 4 scan0101 | |
| Particulars for a front brake pull-off spring for the Phantom III car. | 6th Nov 1935 | Box 92 \ 4 scan0102 | |
| Specification for a front brake pull off spring for the Phantom III model. | 7th Nov 1935 | Box 92 \ 4 scan0103 | |
| Dangerous Phantom III rear brake drum failure, attributing the cause to increased stress and recommending a new design with 4 ribs. | 7th Nov 1935 | Box 92 \ 4 scan0104 | |
| Alteration to the Phantom III horizontal hand brake lever position. | 8th Nov 1935 | Box 92 \ 4 scan0105 | |
| Failure of Phantom III rear brake drums and suggesting potential causes and design improvements. | 8th Nov 1935 | Box 92 \ 4 scan0106 | |
| Cause of failure in Phantom III rear brake drums and potential solutions. | 8th Nov 1935 | Box 92 \ 4 scan0107 | |
| Requesting to prevent placing large orders for Phantom III rear brake drum castings pending a decision on alterations. | 9th Nov 1935 | Box 92 \ 4 scan0108 | |
| Failure of Phantom III rear brake drums and proposing a design modification. | 11th Nov 1935 | Box 92 \ 4 scan0109 | |
| Issues with flexible rear brake drums on the Phantom III and a request to produce modified drums for testing. | 16th Nov 1935 | Box 92 \ 4 scan0110 | |
| Changing from aluminium to steel for hand brake shoes on the first 50 Phantom III cars due to seizing issues. | 18th Nov 1935 | Box 92 \ 4 scan0111 | |
| The seizure of Phantom III rear brakes, proposing changes to materials for spindles and end caps. | 19th Nov 1935 | Box 92 \ 4 scan0112 | |
| Investigation into brake fade on a Phantom III (35-EX), detailing pedal movement measurements and their causes. | 21th Nov 1935 | Box 92 \ 4 scan0113 | |
| Technical memorandum discussing brake pedal 'sponge', fading issues, and proposed solutions. | 21th Nov 1935 | Box 92 \ 4 scan0114 | |
| Brake system examination, detailing issues with the servo, drums, and linings, and proposing material changes. | 21th Nov 1935 | Box 92 \ 4 scan0115 | |
| Notification regarding a design change to the Phantom III rear brake drums to overcome distortion. | 26th Nov 1935 | Box 92 \ 4 scan0116 | |
| Brake pedal movement for the Phantom III, requesting modifications to the pedal stem. | 29th Nov 1935 | Box 92 \ 4 scan0117 | |
| The outdated brakes on car 30-EX, requesting an upgrade to the latest specification for development work. | 2nd Dec 1935 | Box 92 \ 4 scan0118 | |
| Design change for the Phantom III rear brake drums, instructing to machine castings to a new drawing, G. 84005. | 4th Dec 1935 | Box 92 \ 4 scan0119 | |
| Requesting the production of two sets of Oillite bushes for Phantom III Bell Cranks for experience gathering. | 4th Dec 1935 | Box 92 \ 4 scan0120 | |
| Partial rivet failure on Phantom III & Bentley steel brake shoes, with analysis and recommendations for a new material. | 11th Dec 1935 | Box 92 \ 4 scan0121 | |
| Trouble with unequal expansion of brake shoes and drums, and instructions to use experimental steel shoes with zinc bonded material. | 12th Dec 1935 | Box 92 \ 4 scan0122 | |
| Suggesting the substitution of strengthened front springs for the rear foot brake shoe springs on the Phantom III. | 2nd Jan 1936 | Box 92 \ 4 scan0123 | |
| The failure of Phantom III rear brake lining rivets due to heat, requesting tests on new special brass rivets. | 8th Jan 1936 | Box 92 \ 4 scan0124 | |
| List of brake experiments showing component status and car allocation. | 11th Jan 1936 | Box 92 \ 4 scan0125 | |
| Summary of brake system modifications, tests, and statuses for various vehicle models. | 11th Jan 1936 | Box 92 \ 4 scan0126 | |
| Seizures in the oiling scheme and brake gear for Bentley 20/25 and Phantom III models. | 4th Jan 1936 | Box 92 \ 4 scan0127 | |
| The addition of felt sealing washers to the bell crank lever needle bearings for the Phantom III rear brake operation. | 4th Jan 1936 | Box 92 \ 4 scan0128 | |
| Revised hand brake adjustment for the Phantom III, including a special spanner. | 4th Jan 1936 | Box 92 \ 4 scan0129 | |
| Issue with the front brakes engaging when the car is jacked up, preventing drum removal. | 17th Jan 1936 | Box 92 \ 4 scan0130 | |
| Issue with the Phantom III front brakes engaging during full rebound and proposed modifications. | 21th Jan 1936 | Box 92 \ 4 scan0131 | |
| Requesting a new brake lever for the Phantom III 32-EX to be fitted before its 10,000-mile test. | 21th Jan 1936 | Box 92 \ 4 scan0132 | |
| Modification of a sheet metal bracket for the Phantom III brake pedal. | 23th Jan 1936 | Box 92 \ 4 scan0133 | |
| Modified sheet metal bracket for the Phantom III brake pedal. | 23th Jan 1936 | Box 92 \ 4 scan0134 | |
| Two brake failures on a Phantom III model, requesting an investigation. | 27th Jan 1936 | Box 92 \ 4 scan0135 | |
| Instruction regarding the fitting of spring retaining rings for the Phantom III brake operation. | 28th Jan 1936 | Box 92 \ 4 scan0136 | |
| Phantom III brake issues, including seizing bearings and a push rod design flaw, and proposing modifications. | 28th Jan 1936 | Box 92 \ 4 scan0137 | |
| Potential modification to the bell crank and lever for the Phantom III brake mechanism. | 28th Jan 1936 | Box 92 \ 4 scan0138 | |
| The fitting of spring retaining rings for the Phantom III brake operation. | 28th Jan 1936 | Box 92 \ 4 scan0139 | |
| Response to a proposed cost-reduction scheme for the Phantom III hand brake equaliser. | 29th Jan 1936 | Box 92 \ 4 scan0140 | |
| Rear brake operation for the Phantom III model. | 31th Jan 1936 | Box 92 \ 4 scan0141 | |
| Cost reductions for the Phantom III Hand Brake Equaliser, specifically concerning needle bearings and acme threads. | 31th Jan 1936 | Box 92 \ 4 scan0142 | |
| Operation of the foot and hand rear brakes for the Phantom III model. | 31th Jan 1936 | Box 92 \ 4 scan0143 | |
| The order and fitting of brake drums for car 32-EX and material tests on 'Millenite' iron. | 31th Jan 1936 | Box 92 \ 4 scan0144 | |
| Modifications to the rear brake intermediate shaft for chassis with dropped front ends. | 10th Feb 1936 | Box 92 \ 4 scan0145 | |
| Requesting to fit lever Rm.46 to the 32-EX brakes on a car in the shop. | 11th Feb 1936 | Box 92 \ 4 scan0146 | |
| Modifications to the rear brakes of the Phantom III. | 12th Feb 1936 | Box 92 \ 4 scan0147 | |
| Design change for the Phantom III rear brake intermediate shaft. | 12th Feb 1936 | Box 92 \ 4 scan0148 | |
| Design change for the Phantom III rear brake intermediate shaft. | 12th Feb 1936 | Box 92 \ 4 scan0149 | |
| Requesting an order of Phantom III brake linings from Ferodo Ltd. | 24th Feb 1936 | Box 92 \ 4 scan0150 | |
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