| Description | Date | Identifier | |
| Confidential memo requesting two 40/50 HP chassis and bodies to carry out experimental tests on front wheel brakes. | 28th Sep 1923 | Box 73 \ 2 scan0025 | |
| Timeline for fitting front wheel brakes after the bodies are fitted. | 4th Oct 1923 | Box 73 \ 2 scan0026 | |
| Secret memo discussing the design and construction of an armoured car body, suggesting sourcing parts from Vickers. | 4th Oct 1923 | Box 73 \ 2 scan0027 | |
| Query regarding the visibility and potential concealment of front wheel brakes on an armoured car. | 4th Oct 1923 | Box 73 \ 2 scan0028 | |
| Confirming the allocation of two long experimental chassis, Nos. 93-NK and 35-PK. | 4th Oct 1923 | Box 73 \ 2 scan0029 | |
| Secret memo on experimental tests for the E.A.C-3 chassis, detailing modifications for 4-wheel brakes and recommending further testing. | 5th Oct 1923 | Box 73 \ 2 scan0030 | |
| Minimum number of cars and chassis required for experimental tests, specifically concerning front-wheel brakes and armoured car bodies. | 4th Oct 1923 | Box 73 \ 2 scan0031 | |
| Transfer of responsibility for 10,000-mile chassis tests to the Experimental Department and clarifying testing timelines. | 1st Oct 1923 | Box 73 \ 2 scan0032 | |
| The allotment of two long-type chassis for modification into E.A.C-3 chassis. | 1st Oct 1923 | Box 73 \ 2 scan0033 | |
| Secret memo from B.J. to Hs. regarding the urgent construction and testing of eight experimental E.A.C.3 chassis. | 8th Oct 1923 | Box 73 \ 2 scan0034 | |
| Query regarding the types of steering fitted to 8 chassis allotted for E.A.C. III. | 10th Oct 1923 | Box 73 \ 2 scan0035 | |
| Secret memo outlining the strict conditions for road testing a chassis fitted with front-wheel brakes. | 10th Oct 1923 | Box 73 \ 2 scan0036 | |
| Communication regarding the despatch of chassis and requirements for future chassis bodies for testing. | 10th Oct 1923 | Box 73 \ 2 scan0037 | |
| Secret memo about despatching chassis to coachbuilders and arranging for heavy test bodies. | 11th Oct 1923 | Box 73 \ 2 scan0038 | |
| Allocating an order number for work on chassis 35-PK and 93-NK for experimental purposes and requesting billing information. | 11th Oct 1923 | Box 73 \ 2 scan0039 | |
| Secret internal memorandum detailing decisions on brake systems and gearbox designs for various chassis. | 13th Oct 1923 | Box 73 \ 2 scan0040 | |
| Decision to retain the existing Hand Brake and Back Axle design, alongside a new scheme for the Bell Crank Lever. | 15th Oct 1923 | Box 73 \ 2 scan0041 | |
| Road tests conducted on front wheel brakes. | 20th Oct 1923 | Box 73 \ 2 scan0042 | |
| Steering and braking issues, including pivot lean, axle twist, and steering wobbles. | 20th Oct 1923 | Box 73 \ 2 scan0043 | |
| Brake pedal pressure, brake performance with wrapping action, and the adverse effects of front brakes on steering geometry. | 12th Jul 1923 | Box 73 \ 2 scan0044 | |
| Road tests conducted on front wheel brakes. | 20th Oct 1923 | Box 73 \ 2 scan0045 | |
| Steering and braking performance, focusing on pivot lean, axle twist, and steering wobbles. | 12th Jul 1923 | Box 73 \ 2 scan0046 | |
| Brake performance, adjustment, and the effect of front brakes on steering geometry. | 1st Oct 1923 | Box 73 \ 2 scan0047 | |
| Front wheel brakes, detailing axle twist under load and the results of measuring compensator body movement. | 12th Jul 1923 | Box 73 \ 2 scan0048 | |
| Secret memo discussing design experiments and suggestions for front wheel brakes. | 10th Oct 1923 | Box 73 \ 2 scan0049 | |
| Secret internal memorandum detailing the results of road tests on front wheel brakes, noting issues with jaggers and torsional effects. | 22th Oct 1923 | Box 73 \ 2 scan0050 | |
| Confirmation of a wire (telegram) providing instructions on a brake mechanism design. | 22th Oct 1923 | Box 73 \ 2 scan0051 | |
| Confirmation of a telegram from Royce regarding a brake and spring deflection issue. | 22th Oct 1923 | Box 73 \ 2 scan0052 | |
| Confirmation of a telegram from Royce with suggestions for modifying braking and suspension systems. | 22th Oct 1923 | Box 73 \ 2 scan0053 | |
| Front wheel brake 'jaggers' and proposing solutions including brake alterations, stiffer springs, double radius rods, and shock dampers. | 23th Oct 1923 | Box 73 \ 2 scan0054 | |
| Technical memo discussing improvements for brakes, steering, and friction materials. | 1st Oct 1923 | Box 73 \ 2 scan0055 | |
| Instructions for creating two new sets of front springs for a front wheel brake experiment. | 1st Oct 1923 | Box 73 \ 2 scan0056 | |
| Policy on front wheel brakes and addressing reported issues such as axle wind-up. | 23th Oct 1923 | Box 73 \ 2 scan0057 | |
| Potential modifications and solutions for issues with front wheel brakes. | 24th Oct 1923 | Box 73 \ 2 scan0058 | |
| Damping, the use of aluminium for drums, and the effects of front brakes. | 25th Oct 1923 | Box 73 \ 2 scan0059 | |
| Telegram concerning a car with front-wheel brakes, radius rods, and a specific scheme. | 25th Oct 1923 | Box 73 \ 2 scan0060 | |
| Tests conducted on front wheel brakes, detailing issues with 'jaggering' and proposed solutions. | 28th Oct 1923 | Box 73 \ 2 scan0061 | |
| The ineffectiveness of other manufacturers' 4-wheel brake systems compared to their own. | 26th Oct 1923 | Box 73 \ 2 scan0062 | |
| The dangers of front wheel brakes, front wheel skids, and their effect on steering. | 12th Jul 1923 | Box 73 \ 2 scan0063 | |
| 4-wheel braking systems, focusing on preventing front wheel lock-up and comparing different arrangements. | 26th Oct 1923 | Box 73 \ 2 scan0064 | |
| Road tests and performance issues with front wheel brakes. | 27th Oct 1923 | Box 73 \ 2 scan0065 | |
| Braking performance with varied radius rod ball positions. | 27th Oct 1923 | Box 73 \ 2 scan0066 | |
| Copy of a telegram regarding a modification to a front wheel brake system. | 29th Oct 1923 | Box 73 \ 2 scan0067 | |
| Testing a chassis fitted with front wheel brakes. | 12th Jul 1923 | Box 73 \ 2 scan0068 | |
| Road testing a front wheel brake scheme, noting its effect on steering and a proposed modification. | 1st Nov 1923 | Box 73 \ 2 scan0069 | |
| Testing the parallel control for 4-wheel brakes on a front axle. | 12th Jul 1923 | Box 73 \ 2 scan0070 | |
| Secret memo detailing instructions from Mr. Royce for modifying the four-wheel brake system for the EAC.111 car. | 5th Nov 1923 | Box 73 \ 2 scan0071 | |
| Experiments with front wheel brakes, detailing four key points of investigation. | 1st Nov 1923 | Box 73 \ 2 scan0072 | |
| Design and advantages of a brake for the E.A.C. front axle. | 1st Nov 1923 | Box 73 \ 2 scan0073 | |
| On proposed permanent modifications for front brakes, including new shoe designs and servo mechanisms. | 1st Nov 1923 | Box 73 \ 2 scan0074 | |
| Brake testing results, necessary modifications to brake shoes and actuation, and drawings for Goshawk and 40/50 front axles. | 1st Nov 1923 | Box 73 \ 2 scan0075 | |
| Modifications and testing of brake systems, including servos and equalised brakes. | 8th Nov 1923 | Box 73 \ 2 scan0076 | |
| Coachwork modifications for converting the 40/50 and Goshawk models to four-wheel brakes. | 8th Nov 1923 | Box 73 \ 2 scan0077 | |
| Short run and brake modifications for the first 40/50 HP chassis. | 10th Nov 1923 | Box 73 \ 2 scan0078 | |
| Difficulties of automatically relieving front wheel brakes during cornering and proposing a new scheme. | 12th Nov 1923 | Box 73 \ 2 scan0079 | |
| Modifications to a 4-wheel servo brake system. | 12th Nov 1923 | Box 73 \ 2 scan0080 | |
| Page discussing brake pressure, effectiveness, and vehicle steering when braking. | 12th Nov 1923 | Box 73 \ 2 scan0081 | |
| Confirmation of a telegram regarding instructions for front brake and servo system tests. | 12th Nov 1923 | Box 73 \ 2 scan0082 | |
| Copy of a telegram regarding component flexibility and testing procedures. | 15th Nov 1940 | Box 73 \ 2 scan0083 | |
| The testing and modification of a 4-wheel brake system to address issues with jaggers. | 14th Nov 1923 | Box 73 \ 2 scan0084 | |
| Confirmation of a telegram from Royce suggesting a solution to 'jaggers' caused by drum flexibility. | 15th Nov 1923 | Box 73 \ 2 scan0085 | |
| Telegram concerning a brake experiment, suggesting modifications to the brake shoes. | 21th Aug 1923 | Box 73 \ 2 scan0086 | |
| Investigation into an inconsistent 4-wheel braking system. | 15th Nov 1923 | Box 73 \ 2 scan0087 | |
| Communications and analysis on the causes and solutions for 'jaggering' in four-wheel brake systems. | 15th Nov 1923 | Box 73 \ 2 scan0088 | |
| Technical memorandum discussing braking system issues and potential improvements to axles, shoes, and damping. | 15th Nov 1923 | Box 73 \ 2 scan0089 | |
| Continued section of a report discussing unsatisfactory schemes of shoes and the need for improvement. | 16th Nov 1923 | Box 73 \ 2 scan0090 | |
| Telegram from Royce regarding the cause of 'jaggering' brakes and suggested solutions. | 16th Nov 1923 | Box 73 \ 2 scan0091 | |
| Telegram from Royce detailing the cause and solution for a brake 'jaggering' problem by modifying the Ferodo lining. | 16th Nov 1923 | Box 73 \ 2 scan0092 | |
| Confirmation of a telegram from Royce regarding an issue with jaggering brakes and suggested solutions. | 16th Nov 1923 | Box 73 \ 2 scan0093 | |
| Brake testing results, issues with stiff front springs, and the proposal of a torque member to control front axle brake torsion. | 21th Nov 1923 | Box 73 \ 2 scan0094 | |
| Modifications to the pressure distributing gear for 40/50 four-wheel brakes to eliminate self-binding. | 22th Nov 1923 | Box 73 \ 2 scan0095 | |
| Proposed modifications to the four-wheel brake system and suspension for the 40/50 model. | 22th Nov 1923 | Box 73 \ 2 scan0096 | |
| Negative consequences of fitting 4-wheel brakes to the 40/50 HP model. | 22th Nov 1923 | Box 73 \ 2 scan0097 | |
| Continued memorandum regarding the testing procedure for front wheel brakes for the Sales department. | 22th Nov 1923 | Box 73 \ 2 scan0098 | |
| Secret memo from CJ to Hs discussing a difficulty with front wheel brakes when shunting. | 22th Nov 1923 | Box 73 \ 2 scan0099 | |
| Telegram from Royce to Hives regarding solutions for brake faults, including modifications to the balancing gear and sunshaft. | 22th Nov 1923 | Box 73 \ 2 scan0100 | |
| Private memo requesting views on an enclosed document concerning front wheel brakes. | 23th Nov 1923 | Box 73 \ 2 scan0101 | |
| Querying the timeline for a chassis with front wheel brakes and the impact of recent design changes. | 1st Nov 1923 | Box 73 \ 2 scan0102 | |
| From CJ to Hs regarding an arrangement for steering lock and front springs on a car with 4 wheel brakes. | 23th Nov 1923 | Box 73 \ 2 scan0103 | |
| Comparison of brake load and brake effort for 'Brakes with Floating Fulcrum' and 'Standard Brakes'. | 1st Nov 1923 | Box 73 \ 2 scan0104 | |
| Modifications made to floating fulcrum type four-wheel brakes. | 23th Nov 1923 | Box 73 \ 2 scan0105 | |
| Proposed modifications to the front and rear wheel braking systems. | 23th Nov 1923 | Box 73 \ 2 scan0106 | |
| Torque calculations and spring deflection for front wheel brakes. | 24th Nov 1923 | Box 73 \ 2 scan0107 | |
| Confirmation of a telegram from Royce to Hives regarding alterations to a floating fulcrum cam. | 26th Nov 1923 | Box 73 \ 2 scan0108 | |
| Copy of a telegram from Mr. Royce detailing a list of required and non-required parts. | 27th Nov 1923 | Box 73 \ 2 scan0109 | |
| Suggesting a method to check for unnecessary friction in the four-wheel brake mechanism. | 27th Nov 1923 | Box 73 \ 2 scan0110 | |
| Proposed experimental alterations to the four-wheel brake system. | 27th Nov 1923 | Box 73 \ 2 scan0111 | |
| Continued memorandum discussing improvements to brake shoe and servo systems. | 28th Nov 1923 | Box 73 \ 2 scan0112 | |
| Brake testing methodology and proposed brake shoe designs. | 28th Nov 1923 | Box 73 \ 2 scan0113 | |
| Steering load and pivot lean on a four-wheel brake chassis following bump tests. | 28th Nov 1923 | Box 73 \ 2 scan0114 | |
| Standardisation of parts for the 40/50 chassis, particularly regarding car EAC.11 and a Dynamo. | 28th Nov 1923 | Box 73 \ 2 scan0115 | |
| Modifications to dynamo pole shoes and their adaptation for the 40/50 model. | 29th Nov 1923 | Box 73 \ 2 scan0116 | |
| Stopping work on front wheel brakes and requesting an up-to-date list of parts likely to be scrapped. | 29th Nov 1923 | Box 73 \ 2 scan0117 | |
| Testing front brakes with a floating fulcrum. | 29th Nov 1923 | Box 73 \ 2 scan0118 | |
| Brake performance satisfaction and rectification procedures for the 40/50 chassis. | 30th Nov 1923 | Box 73 \ 2 scan0119 | |
| Vehicle preferences for a trip to Le Canadel, including a Goshawk and a 40/50 for experimental testing on carburation and brakes. | 1st Dec 1923 | Box 73 \ 2 scan0120 | |
| Explaining a delay in four-wheel brake designs, awaiting experimental results for the epicyclic pressure distributing gear. | 12th Dec 1923 | Box 73 \ 2 scan0121 | |
| Telegram confirmation regarding a brake experiment and proposed modifications. | 3rd Dec 1923 | Box 73 \ 2 scan0122 | |
| New type of sleeve spring clip with dowel pegs for 40/50 four-wheel brake axles. | 4th Dec 1923 | Box 73 \ 2 scan0123 | |
| Brake tests, comparing the effectiveness of different brake shoe bedding on the 40/50 model. | 4th Dec 1923 | Box 73 \ 2 scan0124 | |
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