| Description | Date | Identifier | |
| Comparison of braking units for the 40/50, 20/25, J.III, and Peregrine models with proposed modifications. | 11th Nov 1932 | Box 102 \ 3 scan0076 | |
| Brake adjustment for the 20/25 model. | 23th Nov 1932 | Box 102 \ 3 scan0077 | |
| On braking system difficulties, weighing the loss of pedal movement against the squeak-elimination benefits of the Hancock brake shoe. | 23th Nov 1932 | Box 102 \ 3 scan0078 | |
| Minimum clearance for the 20/25HP footbrake, comparing a .750' clearance with a proposed 7/8'. | 11th Nov 1932 | Box 102 \ 3 scan0079 | |
| Footbrake issues on the 20/25HP model, specifically rear brake shoe clearance to prevent seizing. | 23th Nov 1932 | Box 102 \ 3 scan0080 | |
| Brake shudder issues with new cast iron brake drums on the 25 HP model. | 9th Dec 1932 | Box 102 \ 3 scan0081 | |
| Modified brake layout for the J.III car, with two prints attached. | 31th Dec 1932 | Box 102 \ 3 scan0082 | |
| Blueprint diagram and calculations for the J III brake layout and overall ratios. | 12th Dec 1932 | Box 102 \ 3 scan0083 | |
| Use of hydraulic transmission for direct braking systems. | 12th Dec 1932 | Box 102 \ 3 scan0085 | |
| Cause and proposed solution for brake seizures on the 20/25 HP chassis. | 21th Mar 1933 | Box 102 \ 3 scan0086 | |
| Standardisation of Lake & Elliott cast iron ribbed brake drums for 25hp chassis. | 11th Oct 1932 | Box 102 \ 3 scan0087 | |
| Test date and associated costs for fitting a new part to an 'I series' chassis. | 7th Jan 1932 | Box 102 \ 3 scan0088 | |
| Complaints of 'brake thumps' on the 20/25HP model and a proposed oil dashpot solution. | 1st Mar 1933 | Box 102 \ 3 scan0089 | |
| Temporary foot brake adjustment on the 20/25 HP chassis to prevent brake seizure. | 6th Apr 1933 | Box 102 \ 3 scan0090 | |
| Scheme for using steel straps on rear brakes and an oil dashpot for the servo on the 20/25 HP model. | 7th Apr 1933 | Box 102 \ 3 scan0091 | |
| Increased clearance for the 20/25 HP model's brakes and whether to apply it retrospectively. | 13th Apr 1933 | Box 102 \ 3 scan0092 | |
| Request for ten 25 HP brake ropes for testing to address stretching and loss of pedal travel. | 16th May 1933 | Box 102 \ 3 scan0093 | |
| Request to manufacture two brake dashpots from an existing part as no drawings are available. | 16th Jun 1933 | Box 102 \ 3 scan0094 | |
| Standardisation of A.M.R. 2 brake linings to increase brake life on 20/25 HP chassis. | 28th Jun 1933 | Box 102 \ 3 scan0095 | |
| Introduction of a new part to a chassis series. | 13th Nov 1933 | Box 102 \ 3 scan0096 | |
| Standardisation of chassis parts for an increased front braking plate lever on the 25 HP model. | 28th Jun 1933 | Box 102 \ 3 scan0097 | |
| Chassis parts standardisation form concerning the fitting of a new part to a B.2. series chassis. | 12th Dec 1933 | Box 102 \ 3 scan0098 | |
| Excessive pedal travel on 20/25 brakes and a proposed solution. | 22th Sep 1933 | Box 102 \ 3 scan0099 | |
| Fitting and adjustment of front brakes, comparing different models. | 19th Oct 1933 | Box 102 \ 3 scan0100 | |
| Investigation into a hydraulic brake system as an alternative to the mechanical system for the J.3. car. | 4th Nov 1933 | Box 102 \ 3 scan0101 | |
| Identifying a mistake made in standardizing the increased front braking system for the 25 HP cars. | 18th Nov 1933 | Box 102 \ 3 scan0102 | |
| Recommendation to return to the original lever for the 25 HP brakes. | 21th Nov 1933 | Box 102 \ 3 scan0103 | |
| The decision to revert to Ferodo asbestos brake liners for the 20/25 chassis. | 1st Jan 1934 | Box 102 \ 3 scan0104 | |
| Requesting the manufacture of parts for a hand brake modification on a 20/25 HP chassis. | 5th Jan 1934 | Box 102 \ 3 scan0105 | |
| Confirming instructions for using specific brake material on 20/25 HP and Bentley models. | 8th Jan 1934 | Box 102 \ 3 scan0106 | |
| Hurrying through parts for a hand brake modification on a 20/25 HP car, chassis GUB-5. | 9th Jan 1934 | Box 102 \ 3 scan0107 | |
| Standardisation of the modified position of the hand brake lever. | 10th Nov 1933 | Box 102 \ 3 scan0108 | |
| Issue with squeaky brakes on chassis number 20-G4. | 9th Jan 1934 | Box 102 \ 3 scan0109 | |
| Development of steel brake shoes compared to the improved heat-treated aluminium version. | 5th Feb 1934 | Box 102 \ 3 scan0110 | |
| Trials on steel brake shoes, discussing issues of clearance, seizing, and permanent growth compared to aluminium shoes. | 5th Feb 1934 | Box 102 \ 3 scan0111 | |
| Modification to the 20/25 HP front brakes to increase the width of the shoes. | 6th Feb 1934 | Box 102 \ 3 scan0112 | |
| Brake lining materials for the 20/25 HP model, comparing AMR.2 lining with Ferodo Bonded Asbestos. | 6th Feb 1934 | Box 102 \ 3 scan0113 | |
| The performance and standardisation of a new M.R. brake material on the 20/25 Chassis and Bentley models. | 20th Jun 1933 | Box 102 \ 3 scan0114 | |
| Test report on the efficiency of standard Ferodo brakes after being exposed to water. | 6th Feb 1934 | Box 102 \ 3 scan0115 | |
| Measurements and analysis of 'sponge' in the front brake system for a 20/25 model. | 12th Feb 1934 | Box 102 \ 3 scan0116 | |
| Concluding page of a test report confirming the twist of an axle shaft. | 12th Feb 1934 | Box 102 \ 3 scan0117 | |
| Modifications to the 20/25 HP direct-operated 4-brake linkage system. | 10th Feb 1934 | Box 102 \ 3 scan0118 | |
| Brake 'juddering' issues found during testing of the B.2. series chassis after being hosed down. | 12th Feb 1934 | Box 102 \ 3 scan0119 | |
| 'juddering' defect in 20/25 HP brakes and the proposed plan to remedy the issue. | 14th Feb 1934 | Box 102 \ 3 scan0120 | |
| Letter detailing brake 'judder' issues after alterations, and queries about a new throttle and assisted clutch. | 20th Feb 1934 | Box 102 \ 3 scan0121 | |
| Brake judder and a carburetter air valve modification. | 22th Feb 1934 | Box 102 \ 3 scan0122 | |
| Correcting a typing error in a previous memo concerning brake performance issues like squeak and judder. | 22th Feb 1934 | Box 102 \ 3 scan0123 | |
| Arranging car delivery, the status of the brakes, and maintenance of the carburettor air valve. | 22th Feb 1934 | Box 102 \ 3 scan0124 | |
| Postponing an investigation into a car's juddering brakes until the symptom reappears. | 24th Feb 1934 | Box 102 \ 3 scan0125 | |
| Short typed note acknowledging a previous communication regarding a juddering issue. | 27th Feb 1934 | Box 102 \ 3 scan0126 | |
| Modification to the 20/25 HP brakes servo to improve inefficiency. | 13th Feb 1934 | Box 102 \ 3 scan0127 | |
| Inquiring from which chassis heat-treated steel brake shoes were introduced into production. | 23th Mar 1934 | Box 102 \ 3 scan0128 | |
| Heat treatment process for brake shoes and its approximate first application. | 27th Mar 1934 | Box 102 \ 3 scan0129 | |
| Easy brake adjustment specifying the correct wing nut lift clearances for various chassis types. | 4th May 1934 | Box 102 \ 3 scan0130 | |
| Standardisation of Brakes - Easy Adjustment with protected working parts. | 12th Jun 1934 | Box 102 \ 3 scan0131 | |
| Estimated cost for extra jigs, tools, and equipment for the 'F2' series chassis. | 31th May 1934 | Box 102 \ 3 scan0132 | |
| Standardisation of spherical bearings for brake equaliser shafts. | 27th Apr 1934 | Box 102 \ 3 scan0133 | |
| Estimated cost and production timeline for extra jigs, tools, and equipment for the 'F' series chassis. | 11th Jun 1934 | Box 102 \ 3 scan0134 | |
| Issue of brake ropes hitting car undersheets and proposing a solution. | 30th Jul 1934 | Box 102 \ 3 scan0135 | |
| Need for brake re-lining on cars 22-EX and 19-G-IV. | 12th Sep 1934 | Box 102 \ 3 scan0136 | |
| Oil leak from brake equaliser shaft spherical bearings and proposed solutions. | 13th Sep 1934 | Box 102 \ 3 scan0137 | |
| Report concerning oil getting onto the rear braking surfaces of the 20/25HP braking system. | 4th Oct 1934 | Box 102 \ 3 scan0138 | |
| Design of an oil catcher and drain for the 20/25 HP rear braking system. | 5th Oct 1934 | Box 102 \ 3 scan0139 | |
| Complaint of oil getting on the 20/25 rear brakes and the associated solution. | 11th Oct 1934 | Box 102 \ 3 scan0140 | |
| Request for a further set of pivoted rear brake shoes for a 20/25 model due to brake squeaks. | 7th Nov 1934 | Box 102 \ 3 scan0141 | |
| Request for information to reply to a query regarding the rear brakes on the 20/25 HP model. | 8th Nov 1934 | Box 102 \ 3 scan0142 | |
| Complaints of squeaking rear brakes on the 20/25 HP model and investigating the fitment of a Hancock device. | 8th Nov 1934 | Box 102 \ 3 scan0143 | |
| Complaint of squeaking rear brakes on the 20/25 model. | 12th Nov 1934 | Box 102 \ 3 scan0144 | |
| Experiment with anti-squeak rear brake shoes for the 20/25 HP and Wraith cars. | 10th Nov 1934 | Box 102 \ 3 scan0145 | |
| Simplification and risks of the hand brake system on the Wraith II. | 18th Dec 1935 | Box 102 \ 3 scan0146 | |
| Extract of statutory rules and orders from 1931 regarding motor car braking systems. | 1st Jan 1931 | Box 102 \ 3 scan0147 | |
| Experimental department report on the mechanical efficiency of brake system components. | 21th Dec 1934 | Box 102 \ 3 scan0148 | |
| Poor mechanical efficiency of brake systems, particularly on the Spectre model. | 21th Dec 1934 | Box 102 \ 3 scan0149 | |
| Analysis of efficiency losses and experiments on various mechanical components including toggles, linkages, and Bowden cables. | 21th Dec 1934 | Box 102 \ 3 scan0150 | |
| Analysis of the efficiency and friction coefficient of a torsion shaft, pin joints, and levers for a 20/25 model. | 21th Dec 1934 | Box 102 \ 3 scan0151 | |
| Series of graphs showing Bowden cable efficiency against angle at various loads. | 21th Dec 1934 | Box 102 \ 3 scan0152 | |
| Graph showing the efficiency of brake toggles for a Bentley vehicle with an oily brake drum. | 21th Dec 1934 | Box 102 \ 3 scan0153 | |
| Graph and table detailing the efficiency of a Bowden Cable at various angles and loads. | 21th Dec 1934 | Box 102 \ 3 scan0154 | |
| Graph showing the efficiency test of a torsion shaft in a 20-25 front axle, plotting load against movement. | 21th Dec 1934 | Box 102 \ 3 scan0155 | |
| Graph plotting the efficiency and deflection of a pin-jointed octagon against input load in pounds. | 21th Dec 1934 | Box 102 \ 3 scan0156 | |
| Graph of efficiency versus input load for a 20-25 HP back axle brake lever, for both single and six-lever systems. | 24th Mar 1909 | Box 102 \ 3 scan0157 | |
| Photograph of a balancing rig apparatus with a central weight. | 24th Mar 1909 | Box 102 \ 3 scan0158 | |
| Photograph of a dynamometer and pulley system testing a series of levers. | 8th Jan 1936 | Box 102 \ 3 scan0159 | |
| Modifications to the 25-30 brake linkage and undersheets when using Bentley crankcases. | 8th Jan 1936 | Box 102 \ 3 scan0160 | |
| Hand brake efficiency for the Phantom II and 25 HP chassis, focusing on oil contamination. | 16th Jan 1935 | Box 102 \ 3 scan0161 | |
| Modification for Phantom II & 25 HP chassis hand brake efficiency due to oil on the brake shoes. | 17th Jan 1935 | Box 102 \ 3 scan0162 | |
| Hand brake efficiency and oil contamination on Phantom II and 25 HP chassis brakes. | 18th Jan 1935 | Box 102 \ 3 scan0163 | |
| Standardisation of parts for anti-squeak rear brake shoes. | 30th Oct 1934 | Box 102 \ 3 scan0164 | |
| Estimated cost for extra jigs, tools, and equipment for the 'H' series chassis. | 14th Nov 1934 | Box 102 \ 3 scan0165 | |
| Suggesting an increase in oil supply to seizing actuating shafts for the 20/25HP rear brakes. | 29th Mar 1935 | Box 102 \ 3 scan0166 | |
| Request to produce and fit water excluders for a 20/25 HP chassis being sent to France. | 8th Apr 1935 | Box 102 \ 3 scan0167 | |
| Inefficient front brakes on the 20/25 HP model, requesting the fitting of 35° servo cams for testing. | 10th Apr 1935 | Box 102 \ 3 scan0168 | |
| Modifications for a water excluder on the front axle. | 17th Apr 1935 | Box 102 \ 3 scan0169 | |
| Method for a front brake water excluder for the 20/25 HP model, referencing a similar design on the Bentley. | 13th May 1935 | Box 102 \ 3 scan0170 | |
| Brake judder and squeaking issues on a 20/25 model following modifications. | 14th May 1935 | Box 102 \ 3 scan0171 | |
| Blocking holes in the rear brake drums of model 21-G-IV to improve water excluder efficiency. | 17th Dec 1935 | Box 102 \ 3 scan0172 | |
| The cause and cure for front brake thumps on the 20/25 HP model. | 1st Jan 1936 | Box 102 \ 3 scan0173 | |
| The causes of and solutions for front brake thumps on Bentley, 20/25, and Phantom II models. | 11th Mar 1936 | Box 102 \ 3 scan0174 | |
| Pull-off spring for the 25-30 hand brake lever to stop rattles and its required load. | 11th Mar 1936 | Box 102 \ 3 scan0175 | |
| Pull-off spring for the 25-30 HP Hand Brake Lever to prevent rattling. | 11th Mar 1936 | Box 102 \ 3 scan0176 | |
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