| Description | Date | Identifier | |
| Policy on fitting 4-wheel brakes, side levers, and a 4-speed gearbox to the Goshawk model. | 1st Jan 1924 | Box 5 \ 3 03-page087 | |
| Balancing rear brake drums and hubs for the 20-HP car. | 30th Jan 1924 | Box 5 \ 3 03-page088 | |
| The Goshawk frame and widening of the track to accommodate 4-wheel brakes. | 24th Jun 1924 | Box 5 \ 3 03-page089 | |
| Inquiry regarding the machining status of brake drums for chassis 56-S-5 due to excessive wear. | 18th Aug 1924 | Box 5 \ 3 03-page090 | |
| Suggestions for testing and repairing 20 HP Chassis brake drums. | 21th Oct 1924 | Box 5 \ 3 03-page091 | |
| Newly escalated urgency of developing front wheel brakes for the 20 HP chassis. | 30th Oct 1924 | Box 5 \ 3 03-page092 | |
| Design progress and dependencies for the 20 HP chassis four-wheel brake system. | 12th Nov 1924 | Box 5 \ 3 03-page093 | |
| Examination of broken front springs and recommendations for improvements to the 20 HP car's suspension and brakes. | 27th Nov 1924 | Box 5 \ 3 03-page094 | |
| Analysis of increased wear on rear brake drums following the introduction of servo-assisted, four-wheel brakes. | 29th Nov 1924 | Box 5 \ 3 03-page095 | |
| Increasing the 20 HP track width to accommodate wider rear brake drums and the impact of driver braking habits. | 29th Nov 1924 | Box 5 \ 3 03-page096 | |
| Scheme using dampers to resolve squeaking brakes on 20 HP cars. | 1st Jan 1925 | Box 5 \ 3 03-page097 | |
| Arrangement of a rear brake damper with a modified dust cover for Chassis II. | 18th Jan 1928 | Box 5 \ 3 03-page098 | |
| Proposal to order 100 sets of materials for four-wheel brakes on the 20 HP U.S.A. chassis. | 30th Jan 1925 | Box 5 \ 3 03-page099 | |
| Design and testing of front brakes, including the use of 40' springs, radius rods, and shackles. | 2nd Mar 1925 | Box 5 \ 3 03-page100 | |
| Squeaking brakes on the 20-HP chassis and requesting a new solution. | 16th Feb 1925 | Box 5 \ 3 03-page101 | |
| Solution for squeaking brakes on the 20-HP chassis and its distribution to depots. | 2nd Mar 1925 | Box 5 \ 3 03-page102 | |
| The issue of squeaking brakes on the 20 HP model and the unacceptable nature of the current remedy. | 18th Mar 1925 | Box 5 \ 3 03-page103 | |
| Customer complaints of squeaking brakes on the 20 HP model and potential solutions. | 25th Mar 1925 | Box 5 \ 3 03-page104 | |
| Delays with the 'India' chassis concerning front-wheel brakes and gearbox parts. | 31th Mar 1925 | Box 5 \ 3 03-page105 | |
| Potential solutions and design comparisons for squeaking brakes on the 20 HP model. | 1st Apr 1925 | Box 5 \ 3 03-page106 | |
| Cause of squeaking brakes on the Goshawk model, suggesting high pressure as the reason. | 1st Apr 1925 | Box 5 \ 3 03-page107 | |
| Secret memorandum discussing design modifications and potential failures of front brake pivots. | 15th Apr 1925 | Box 5 \ 3 03-page108 | |
| Secret memo discussing a proposed lightened squeak damper for 20 HP rear brakes. | 6th Apr 1926 | Box 5 \ 3 03-page109 | |
| Suggesting a trial of a brake squeak damper based on an experiment with a Morris-Cowley. | 16th Apr 1925 | Box 5 \ 3 03-page110 | |
| The two types of squeaking brakes, a high note squeak and a low note groan, on the 30 HP model. | 17th Apr 1925 | Box 5 \ 3 03-page111 | |
| The causes and potential remedies for brake squeaking and groaning on 20 HP and 40/50 models. | 17th Apr 1925 | Box 5 \ 3 03-page112 | |
| The causes and potential cures for squeaking brakes. | 17th Apr 1925 | Box 5 \ 3 03-page113 | |
| Ten tests conducted to eliminate brake squeak. | 17th Apr 1925 | Box 5 \ 3 03-page114 | |
| Cause of squeaky brakes related to water and proposing a new spring and block damper design. | 19th Apr 1925 | Box 5 \ 3 03-page115 | |
| Testing Ferodo strips to eliminate brake squeaks. | 1st Apr 1925 | Box 5 \ 3 03-page116 | |
| Preparations for a 10,000-mile test of an 'India' model with front wheel brakes. | 12th May 1925 | Box 5 \ 3 03-page117 | |
| Steering instability, rapid servo wear, and braking faults. | 12th May 1925 | Box 5 \ 3 03-page118 | |
| Concerning the production and testing of 'India' type cars, comparing versions with and without 4-wheel brakes. | 25th Sep 1924 | Box 5 \ 3 03-page119 | |
| The performance of the brakes and steering for the 'India' model with 4-wheel brakes. | 4th May 1925 | Box 5 \ 3 03-page120 | |
| Construction of gearboxes with torsionally free pinions and a modification to first gear. | 4th May 1925 | Box 5 \ 3 03-page121 | |
| Graph showing the average coefficient of friction and temperature change of Ferodo bonded asbestos lining over one hour. | 2nd May 1925 | Box 5 \ 3 03-page122 | |
| Secret memo regarding the production of lightened front brake toggle shafts for 'India' cars with four-wheel brakes. | 2nd May 1925 | Box 5 \ 3 03-page123 | |
| Secret memo concerning the delayed departure of the 'INDIA' car with 4-wheel brakes. | 13th May 1925 | Box 5 \ 3 03-page124 | |
| Secret memo discussing the precautions for camouflaging new 4-wheel brakes on the 20 HP model for India. | 15th May 1925 | Box 5 \ 3 03-page125 | |
| The brake distribution and leverages for the 'India' four-wheel brake system. | 25th Sep 1924 | Box 5 \ 3 03-page126 | |
| Tests on front axle torsion and servo efficiency. | 20th May 1925 | Box 5 \ 3 03-page127 | |
| Page discussing servo efficiency and theoretical brake distribution. | 1st May 1925 | Box 5 \ 3 03-page128 | |
| Requesting a check of figures on a sketch for 'India' front wheel brake leverages. | 25th May 1925 | Box 5 \ 3 03-page129 | |
| Blueprint detailing the G II & G III brake linkages, performance calculations, and efficiency data. | 1st Mar 1928 | Box 5 \ 3 03-page130 | |
| Clarifying 4-wheel brake distribution calculations and comparing braking percentages for different setups. | 25th May 1925 | Box 5 \ 3 03-page131 | |
| Ratio of servo braking for front and rear brakes in relation to vehicle weight. | 1st Jul 1934 | Box 5 \ 3 03-page132 | |
| Authorisation sheet for a design change to a lighter brake operating mechanism for the 'India' plus F.W.B. model. | 26th May 1925 | Box 5 \ 3 03-page133 | |
| The servo efficiency of the 'India' model's front wheel brakes. | 15th Sep 1926 | Box 5 \ 3 03-page134 | |
| Altering brake distribution by increasing leverage to the front by 20%. | 27th May 1925 | Box 5 \ 3 03-page135 | |
| Replying to a query about the comparability of braking units and servo multiplication between different models. | 25th May 1925 | Box 5 \ 3 03-page136 | |
| The braking ratios and efficiency of a servo unit referred to as the 'India' unit. | 27th May 1925 | Box 5 \ 3 03-page137 | |
| Page discussing the calculation of front to rear braking units and servo ratios in relation to car weight. | 25th Sep 1926 | Box 5 \ 3 03-page138 | |
| Authorisation for an improved and lightened front brake cam operation for the 'India' model. | 28th May 1925 | Box 5 \ 3 03-page139 | |
| Spring-loaded steering connections for the India and Phantom models. | 28th May 1926 | Box 5 \ 3 03-page140 | |
| Questioning the definition of 'servo efficiency' in relation to four-wheel brakes. | 28th May 1925 | Box 5 \ 3 03-page141 | |
| Secret memorandum discussing modifications and discrepancies for the 'India' model front axle brake levers. | 29th Sep 1925 | Box 5 \ 3 03-page142 | |
| Secret memorandum discussing torque multiplication and rod loads for the 'India' four-wheel brake system. | 29th May 1925 | Box 5 \ 3 03-page143 | |
| Braking leverage, servo efficiency, and the distribution of braking power on cars of varying weights. | 27th May 1925 | Box 5 \ 3 03-page144 | |
| Secret memorandum discussing steering and braking improvements for the 'India' chassis. | 29th May 1925 | Box 5 \ 3 03-page145 | |
| Improvements and issues with the front wheel braking system. | 5th Jun 1925 | Box 5 \ 3 03-page146 | |
| Secret memo discussing front wheel braking modifications and instructions for the India model. | 8th Jun 1925 | Box 5 \ 3 03-page147 | |
| Mr. Royce's opinion on the proportions of braking and adjustments to achieve a desired torque multiplication. | 9th Jun 1925 | Box 5 \ 3 03-page148 | |
| Effect of altering the proportion of direct braking on servo efficiencies. | 9th Jun 1925 | Box 5 \ 3 03-page149 | |
| Secret memo detailing front brake and servo adjustments for vehicles in India & East Africa. | 10th Jun 1925 | Box 5 \ 3 03-page150 | |
| Continued section of a typed memo discussing the need for rapid action. | 11th Jun 1925 | Box 5 \ 3 03-page151 | |
| Modifications to an 'India' car, focusing on brakes, stiffer springs, and gearbox tests. | 11th Jun 1925 | Box 5 \ 3 03-page152 | |
| Tests for 4-speed 20 HP gearboxes, detailing modifications to splines and analysing the results. | 1st Jun 1925 | Box 5 \ 3 03-page153 | |
| Servo efficiency, detailing the calculation of 'torque multiplication' units for the 'INDIA' F.W.B. project. | 1st Jun 1925 | Box 5 \ 3 03-page154 | |
| Calculations for torque multiplication units for an 'India' Servo system. | 11th Jun 1925 | Box 5 \ 3 03-page155 | |
| Blueprint detailing modifications to a braking system, with associated calculations, distribution table, and performance graphs. | 11th Jun 1925 | Box 5 \ 3 03-page156 | |
| Secret memorandum regarding modifications to the 'INDIA' chassis front axle, brake parts, and a pending decision on front springs. | 3rd Jul 1925 | Box 5 \ 3 03-page157 | |
| Part replacements for the rear brake equalizing mechanism on the 20-HP chassis for India. | 3rd Jul 1925 | Box 5 \ 3 03-page158 | |
| Requesting an order for 200 sets of a new Differential Actuating Lever for the 20-HP Chassis (India) front brake mechanism. | 3rd Jul 1925 | Box 5 \ 3 03-page159 | |
| Part replacements for the Rear Hub of the 20-HP Chassis (India). | 3rd Jul 1925 | Box 5 \ 3 03-page160 | |
| Notification regarding part replacements and material orders for the rear brakes of the 20-HP Chassis for India. | 3rd Jul 1925 | Box 5 \ 3 03-page161 | |
| List of drawings for the front axle and brakes of the 20-HP Indian chassis. | 3rd Jul 1925 | Box 5 \ 3 03-page162 | |
| Part replacements, ordering instructions, and the issuance of new blueprints. | 3rd Jun 1925 | Box 5 \ 3 03-page163 | |
| Clarifying a previous message about 'INDIA' front wheel brakes, correcting a reference from 'wheels' to 'special front axles'. | 16th Jul 1925 | Box 5 \ 3 03-page164 | |
| Clarifying corrections for two previous communications regarding front wheel brakes for India. | 16th Jul 1925 | Box 5 \ 3 03-page165 | |
| Fitting 4-wheel brakes to the 20 HP car, discussing modifications and damper tests. | 23th Jul 1925 | Box 5 \ 3 03-page166 | |
| Continued note on brake squeak issues and damper efficiency on 20 HP and 40/50 HP models. | 24th Jul 1925 | Box 5 \ 3 03-page167 | |
| Front wheel, rear, and servo brake adjustments for the 'India' model. | 24th Jul 1925 | Box 5 \ 3 03-page168 | |
| Adjustments for brake system components including rods, levers, ropes, and servo efficiency. | 1st Jul 1925 | Box 5 \ 3 03-page169 | |
| Adjustments for customers' servo, rear brakes, and front brakes. | 24th Jul 1925 | Box 5 \ 3 03-page170 | |
| Page describing an adjustment procedure for a serrated pressing on a camshaft. | 1st Jul 1925 | Box 5 \ 3 03-page171 | |
| Braking system analysis showing the effects of servo torque on front and rear brake distribution via a lever diagram, data table, and performance chart. | 29th Oct 1936 | Box 5 \ 3 03-page172 | |
| Blueprint detailing the test procedure for measuring servo efficiency and comparison using spring balances. | 25th Aug 1931 | Box 5 \ 3 03-page173 | |
| Proposals for rear brake drum covers on 20 HP & 40/50 HP chassis to prevent noise from trapped stones. | 7th Aug 1925 | Box 5 \ 3 03-page174 | |
| Instructions for setting the front brake lever and determining the length of brake ropes on a 20 HP chassis. | 13th Aug 1925 | Box 5 \ 3 03-page175 | |
| Servo rattle issue in 20 HP cars with 4-wheel brakes. | 1st Aug 1925 | Box 5 \ 3 03-page176 | |
| Performance of the cam for the four-wheel brake system on car GOS.111. | 1st Sep 1925 | Box 5 \ 3 03-page177 | |
| Wear and tear of the brake mechanism after a 10,000-mile test in France. | 11th Sep 1925 | Box 5 \ 3 03-page178 | |
| Requesting brake specifications for the 20 HP chassis for a new instruction book, with handwritten replies. | 15th Sep 1925 | Box 5 \ 3 03-page179 | |
| Responding to queries about brake adjustments, pedal travel, and braking distribution. | 16th Sep 1925 | Box 5 \ 3 03-page180 | |
| Twisted front axle issue on a 20 HP car fitted with 4-wheel brakes. | 16th Sep 1925 | Box 5 \ 3 03-page181 | |
| Twisted front axle (G.111 type) following a high-speed driving and braking incident. | 16th Sep 1925 | Box 5 \ 3 03-page182 | |
| Analysis of damage to an arm caused by a tyre impact combined with hard braking. | 17th Sep 1925 | Box 5 \ 3 03-page183 | |
| The Phantom 4-wheel braking system, detailing changes to braking distribution and performance. | 17th Sep 1925 | Box 5 \ 3 03-page184 | |
| New 20 HP brake design intended to prevent squeaking on past and future cars. | 21th Sep 1925 | Box 5 \ 3 03-page185 | |
| Issue and current unsatisfactory solution for squeaking brakes on the 20 HP model. | 18th Mar 1925 | Box 5 \ 3 03-page186 | |
| | | | |
