| Description | Date | Identifier | |
| The effects of single front brake application on steering and the torsional movement of the axle. | 7th Sep 1925 | Box 66 \ 5 scan0023 | |
| Phantom 4-wheel braking distribution, detailing modifications and performance on chassis 46-PK. | 12th Jun 1925 | Box 66 \ 5 scan0024 | |
| Squeaking brakes on 40/50 HP & 20 HP models and potential remedies. | 24th Sep 1925 | Box 66 \ 5 scan0025 | |
| Difficulties getting duralumin pressings for the brake carrier, authorising a switch to an aluminium casting. | 13th Oct 1925 | Box 66 \ 5 scan0026 | |
| Issues with the 'Phantom' 4-wheel brake system, specifically poor friction on the equaliser link causing thumping. | 14th Oct 1925 | Box 66 \ 5 scan0027 | |
| The 8-EX car regarding duralumin brake carriers and front axle weight reduction. | 16th Oct 1925 | Box 66 \ 5 scan0028 | |
| Friction issues and modifications for the Phantom's four-wheel brake system. | 22th Oct 1925 | Box 66 \ 5 scan0029 | |
| Suggesting an improvement to the 4-wheel brake system for Phantom and India models by altering the spring arrangement. | 24th Oct 1925 | Box 66 \ 5 scan0030 | |
| Factors affecting the calculation of braking distances for the Phantom model. | 31th Oct 1925 | Box 66 \ 5 scan0031 | |
| Phantom braking performance, wheel locking, and the flywheel effect. | 12th Jun 1925 | Box 66 \ 5 scan0032 | |
| The effect of pull off spring strength on brake thumping for the New Phantom 4-wheel brakes. | 4th Nov 1925 | Box 66 \ 5 scan0033 | |
| Issue with brakes thumping and grabbing on the New Phantom Chassis. | 19th Nov 1925 | Box 66 \ 5 scan0034 | |
| Potential changes to the front wheel brake bedding process for the Phantom and 20 HP models. | 26th Nov 1925 | Box 66 \ 5 scan0035 | |
| Inquiry regarding a report of twisted foot-brake brackets possibly caused by driver misuse. | 3rd Dec 1925 | Box 66 \ 5 scan0036 | |
| Potential causes of a brake squeak on a Chassis 5-MC demonstration car during Barkers trials. | 4th Dec 1925 | Box 66 \ 5 scan0037 | |
| History and faults of a front brake differential designed for the cancelled EAC.II chassis. | 4th Dec 1925 | Box 66 \ 5 scan0038 | |
| Failure of the 20 HP brake brackets. | 9th Dec 1925 | Box 66 \ 5 scan0039 | |
| Mr. Minchin's legal case regarding vehicle stopping distances and brake performance. | 10th Dec 1925 | Box 66 \ 5 scan0040 | |
| Replacement of leather covers with all-metal ones for rear brake countershafts. | 17th Dec 1925 | Box 66 \ 5 scan0041 | |
| Standardisation proposal for metal covers for rear brake adjustment. | 10th Dec 1925 | Box 66 \ 5 scan0042 | |
| Front wheel brake failures caused by excessive oiling of the front pivots. | 1st Jan 1926 | Box 66 \ 5 scan0043 | |
| Standardisation of modified dust covers for rear brakes to prevent stone and grit ingress. | 10th Dec 1925 | Box 66 \ 5 scan0044 | |
| The issue of squeaking front wheel brakes. | 28th Jan 1926 | Box 66 \ 5 scan0045 | |
| Internal correspondence regarding the urgent issue of squeaking front wheel brakes (F.W.B.) and potential solutions. | 27th Jan 1926 | Box 66 \ 5 scan0046 | |
| Issue of squeaking front brakes on Phantom cars and potential solutions. | 30th Jan 1926 | Box 66 \ 5 scan0047 | |
| Specific cars experiencing squeaks from their front wheel brakes. | 2nd Feb 1926 | Box 66 \ 5 scan0048 | |
| Proposing a new design for automatic brake adjustment. | 8th Feb 1926 | Box 66 \ 5 scan0049 | |
| Extract from the Sales Conference minutes about the issue of squeaking front brakes. | 8th Feb 1926 | Box 66 \ 5 scan0050 | |
| Semi-automatic brake adjustment mechanism using a ratchet device. | 19th Feb 1926 | Box 66 \ 5 scan0051 | |
| Patented friction scheme for four-wheel brakes, its ineffectiveness, and potential alternatives. | 2nd Mar 1926 | Box 66 \ 5 scan0052 | |
| Patent for friction in suspension links and modifications to the New Phantom brake linkage. | 4th Mar 1926 | Box 66 \ 5 scan0053 | |
| Mr. Royce's instructions for adapting the EAC.7 double rear brakes. | 11th Mar 1926 | Box 66 \ 5 scan0054 | |
| Complaints of squeaking brakes on the 'New Phantom' and 20 HP models. | 19th Mar 1926 | Box 66 \ 5 scan0055 | |
| Causes and potential solutions for squeaking brakes. | 22th Mar 1926 | Box 66 \ 5 scan0056 | |
| Extract from the Sales Conference minutes regarding squeaking brakes on the 40/50 and 20 HP models. | 25th Mar 1926 | Box 66 \ 5 scan0057 | |
| Following a Sales Conference discussion about the effectiveness of a damping device on squeaking front brakes. | 26th Mar 1926 | Box 66 \ 5 scan0058 | |
| Recommendation to manufacture rear brake operating shaft covers from steel instead of aluminium due to damage. | 8th Apr 1926 | Box 66 \ 5 scan0059 | |
| Instruction to change the material for metal covers on rear brake operating shafts from aluminium to mild steel. | 13th Apr 1926 | Box 66 \ 5 scan0060 | |
| Experiments to overcome squeaking front brakes by treating brake linings with different compounds. | 17th Apr 1926 | Box 66 \ 5 scan0061 | |
| Test report on a 40/50 HP chassis regarding oil leaking from the front pivots onto the front wheel brakes. | 28th May 1926 | Box 66 \ 5 scan0062 | |
| Characteristics of new Ferodo brake material under various conditions like heat, moisture, and rust. | 10th Jun 1926 | Box 66 \ 5 scan0063 | |
| Issue of squeaking brakes on cars with a new lightened axle and proposing solutions. | 21th Sep 1926 | Box 66 \ 5 scan0064 | |
| Complaint regarding an objectionable noise or slap when the footbrake is released on model chassis. | 1st Oct 1925 | Box 66 \ 5 scan0065 | |
| Scheme to fit dampers to front brake drums to eliminate squeaking. | 20th Oct 1926 | Box 66 \ 5 scan0066 | |
| Issues with front brake shoe rattle on the 'Phantom' model. | 22th Oct 1926 | Box 66 \ 5 scan0067 | |
| Explaining why new, lighter front brakes fitted to axle G.74294 are prone to squeaking and the proposed solution. | 25th Oct 1926 | Box 66 \ 5 scan0068 | |
| Summary of tests to overcome squeaks from front brakes fitted to a 12-EX model. | 25th Oct 1926 | Box 66 \ 5 scan0069 | |
| Alterations to Phantom front brakes to prevent rattle, which also applies to the 20 HP model. | 3rd Nov 1926 | Box 66 \ 5 scan0070 | |
| Instruction note regarding Phantom leather covers for brake and cross steering joints. | 13th Nov 1926 | Box 66 \ 5 scan0071 | |
| Causes and potential cures for squeaking brakes, including dampers, brake liners, and bedding. | 19th Nov 1926 | Box 66 \ 5 scan0072 | |
| Problem of squeaking brakes on the 40/50 HP model, exploring solutions like rigid drums and their side-effects. | 23th Nov 1926 | Box 66 \ 5 scan0073 | |
| Modifications required for sample leather covers for brake and cross steering joints on the Phantom model. | 23th Nov 1926 | Box 66 \ 5 scan0074 | |
| Requesting a test drive of a car with an experimentally modified four-wheel braking ratio. | 30th Nov 1926 | Box 66 \ 5 scan0075 | |
| Proposing to alter the braking distribution on a familiar car by fitting two new levers. | 1st Dec 1926 | Box 66 \ 5 scan0076 | |
| Instructions to overcome squeaking from front brake drums on the C.Z. Series, including modifications to cross steering levers. | 8th Dec 1926 | Box 66 \ 5 scan0077 | |
| Proposed alterations to the 40/50 braking system, with a table comparing braking percentages for different schemes. | 9th Dec 1926 | Box 66 \ 5 scan0078 | |
| Standardisation Sheet to reduce front-wheel braking on the Phantom model by modifying lever lengths. | 11th Dec 1926 | Box 66 \ 5 scan0079 | |
| The despatch of two levers to Mr. P. Northey for an experiment. | 13th Dec 1926 | Box 66 \ 5 scan0080 | |
| Graph and calculations comparing brake distribution for the 40/50 model, showing old, new, and proposed setups. | 13th Dec 1926 | Box 66 \ 5 scan0081 | |
| Sending two levers to reduce front braking. | 13th Dec 1926 | Box 66 \ 5 scan0082 | |
| Adjustments to brake distribution and servo assistance for 40/50 & 20 HP models to improve safety. | 13th Dec 1926 | Box 66 \ 5 scan0083 | |
| Test results for dampers on front brake drums. | 22th Dec 1926 | Box 66 \ 5 scan0084 | |
| Incorrect brake levers sent for cars not fitted with a lightened axle. | 31th Dec 1926 | Box 66 \ 5 scan0085 | |
| Part changes for the front brake equalizing mechanism on 40/50 Chassis (Phantom) & Silver Ghost models. | 3rd Jan 1927 | Box 66 \ 5 scan0086 | |
| Sending two levers to be fitted to a trials car to test reduced front braking. | 5th Jan 1927 | Box 66 \ 5 scan0087 | |
| Dispatch of two levers to be fitted to a demonstration car at no charge. | 5th Jan 1927 | Box 66 \ 5 scan0088 | |
| The standardisation sheet for reduced front braking and levers sent for trial. | 17th Jan 1927 | Box 66 \ 5 scan0089 | |
| Standardisation of chassis parts for a front brake drum damper to reduce brake squeaks. | 10th Dec 1926 | Box 66 \ 5 scan0090 | |
| Requesting feedback on the mileage and satisfactory performance of front brake drum dampers. | 1st Jan 1927 | Box 66 \ 5 scan0091 | |
| Telegram message concerning the testing and approval of modified levers. | 19th Jan 1927 | Box 66 \ 5 scan0092 | |
| Confirmation of approval for tested modified levers on vehicle 103-MC, acknowledging a compromise resulting in a 7% reduction in braking effectiveness. | 19th Jan 1927 | Box 66 \ 5 scan0093 | |
| Standardisation sheet detailing the performance of brake drum dampers on experimental cars. | 20th Jan 1927 | Box 66 \ 5 scan0094 | |
| Requesting road test results for an alteration intended to reduce front braking. | 21th Jan 1927 | Box 66 \ 5 scan0095 | |
| Standardisation sheet regarding the successful testing of a reduced front braking scheme on various experimental cars. | 24th Jan 1927 | Box 66 \ 5 scan0096 | |
| Alteration to part G.73149, increasing its length from 3.00' to 4.00' to reduce front braking. | 9th Dec 1926 | Box 66 \ 5 scan0097 | |
| Load tests and design recommendations for front wheel brake torsional pull-off springs. | 31th Jan 1927 | Box 66 \ 5 scan0098 | |
| Stress limits and reliability of front wheel brake pull-off springs. | 10th Feb 1927 | Box 66 \ 5 scan0099 | |
| Fault in the 40/50 HP servo brake mechanism involving the front equaliser shaft and swinging link, leading to brake snatching. | 11th Feb 1927 | Box 66 \ 5 scan0100 | |
| Instructing a reduction in front braking on experimental 40/50 HP cars and a check on hydraulic dampers. | 28th Jan 1927 | Box 66 \ 5 scan0101 | |
| Continued memorandum discussing a toggling issue with a brake linkage and proposing a solution involving a stop. | 11th Feb 1927 | Box 66 \ 5 scan0102 | |
| Failure to adhere to a 10 lbs load specification for a lever and the resulting stress issues requiring modification. | 11th Feb 1927 | Box 66 \ 5 scan0103 | |
| Proposing a sheet metal addition to the Phantom front brake differential to prevent cable slack. | 14th Feb 1927 | Box 66 \ 5 scan0104 | |
| Front track, wheel lean, and decision not to widen the wings on the 10-EX model. | 15th Feb 1927 | Box 66 \ 5 scan0105 | |
| Over-efficiency of new front axle brakes, caused by using old-style bedding on the shoes. | 24th Feb 1927 | Box 66 \ 5 scan0106 | |
| Correcting a misunderstanding about front brake shoe bedding for the Phantom model, attaching a blueprint for the correct procedure. | 25th Feb 1927 | Box 66 \ 5 scan0107 | |
| Recommending the fitting of a stop to the front brakes for cars with the new axle. | 3rd Mar 1927 | Box 66 \ 5 scan0108 | |
| 'Phantom Braking' issues caused by overly efficient front brakes and weak springs. | 1st Mar 1927 | Box 66 \ 5 scan0109 | |
| Suggestions to reduce sponginess and increase stiffness in the EAC.7 brakes. | 25th Mar 1927 | Box 66 \ 5 scan0110 | |
| Design and effectiveness of brake squeak dampers for the 20 HP and Phantom models. | 7th Apr 1927 | Box 66 \ 5 scan0111 | |
| Silent brake stop for the 40/50 HP foot brake levers, proposing a trial with a Ferodo strip on chassis 12-EX. | 28th Apr 1927 | Box 66 \ 5 scan0112 | |
| Issues with the brake servo system and a proposed solution involving a spring thrust collar. | 29th Apr 1927 | Box 66 \ 5 scan0113 | |
| Front brake snatch, the servo shaft, and the condition of brake linings on F.W.B. axles. | 10th May 1927 | Box 66 \ 5 scan0114 | |
| With diagrams detailing modifications to an axle and wheel setup for high-speed wobble tests. | 12th May 1927 | Box 66 \ 5 scan0115 | |
| Note suggesting a fix using lengthened studs and solid packing. | 31th Mar 1938 | Box 66 \ 5 scan0116 | |
| Drawing N.sch.2447 for a clutch and clutch brake, noting its use with an integral gearbox and alterations to the crankcase and crankshaft. | 17th Sep 1927 | Box 66 \ 5 scan0117 | |
| Issues with flexible front brake drums and proposing a new scheme for more rigid drums with dampers for the Phantom model. | 17th Sep 1927 | Box 66 \ 5 scan0118 | |
| Replacing the suggestion for a duralumin rear axle brake bracket with using the entire EAC rear brake assembly. | 10th Oct 1927 | Box 66 \ 5 scan0119 | |
| Revised rear brake gear for the Phantom Sports car, based on EAC.7 brakes. | 8th Oct 1927 | Box 66 \ 5 scan0120 | |
| Operation and components of the braking system, specifically the Tee-equalizer arm. | 15th Oct 1927 | Box 66 \ 5 scan0121 | |
| Technical description of the front brake and servo system operation, including deductions on brake release. | 15th Oct 1927 | Box 66 \ 5 scan0122 | |
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