| Description | Date | Identifier | |
| The use of Discol fuel in car engines. | 19th Aug 1924 | Box 32 \ 1 Scan100 | |
| Performance test comparison between 'Discol' and 'Petrol' fuels on a specific chassis. | 25th Jul 1924 | Box 32 \ 1 Scan101 | |
| Blank document page with a print room stamp from Derby. | 20th Aug 1924 | Box 32 \ 1 Scan102 | |
| Laboratory report detailing the distillation and specific gravity of a 50-50 Aviation Spirit and Benzole sample. | 21th May 1925 | Box 32 \ 1 Scan103 | |
| Use of BP, Shell, and Pratts petrol for testing cars and aero engines, including the introduction of tetra ethyl lead. | 15th Nov 1926 | Box 32 \ 1 Scan104 | |
| Internal memorandum about 'Ethyl' petrol containing T.E.L. and its suitability for company cars. | 21th Jan 1928 | Box 32 \ 1 Scan105 | |
| Outlining two tests to be carried out on a K-S petrol gauge. | 20th Oct 1928 | Box 32 \ 1 Scan106 | |
| Covering memo regarding correspondence with the Zollpeer Motor Fuel Co. about motor fuel. | 1st May 1929 | Box 32 \ 1 Scan107 | |
| Letter from Zollpeer Motor Fuel Co. offering a free sample of their 'Zollpeer Car Power' fuel additive for testing. | 30th Apr 1929 | Box 32 \ 1 Scan108 | |
| Letter to The Zolineer Motor Fuel Co. clarifying the procedure for motor fuel testing. | 1st May 1929 | Box 32 \ 1 Scan109 | |
| From Roy to Hs. regarding the late delivery of Ethylene Glycol. | 12th Aug 1929 | Box 32 \ 1 Scan110 | |
| Quality of Ethylene Glycol delivered by Imperial Chemical Industries. | 13th Aug 1929 | Box 32 \ 1 Scan111 | |
| Engine pinking, the use of different petrols, and using low-grade fuel in experimental cars to identify carburation faults. | 1st Oct 1929 | Box 32 \ 1 Scan112 | |
| Letter from British Petroleum Company Limited confirming the alcohol content of '33 Equals Brooklands Racing Mixture'. | 14th May 1930 | Box 32 \ 1 Scan113 | |
| Letter from the British Petroleum Company regarding the estimation of alcohol content in a fuel mixture. | 14th May 1930 | Box 32 \ 1 Scan114 | |
| Letter from British Petroleum concerning a meeting about 'Brooklands Racing Mixture' fuel. | 19th May 1930 | Box 32 \ 1 Scan115 | |
| The safety and effectiveness of Ethyl Petrol in the company's car engines. | 22th Jun 1931 | Box 32 \ 1 Scan116 | |
| Harold Moore opening a new laboratory for testing lubricating oils and motor fuels. | 1st Dec 1931 | Box 32 \ 1 Scan117 | |
| Letter from Harold Moore announcing the opening of a new laboratory for fuel analysis and valuation using a C.F.R. engine. | 1st Dec 1931 | Box 32 \ 1 Scan118 | |
| Article in 'Automobile Engineer' on tests of Dominion Motor Fuels and a related supply arrangement. | 7th Dec 1931 | Box 32 \ 1 Scan119 | |
| Clarifying the position on recommended fuels, particularly National Benzole Mixture. | 12th Feb 1932 | Box 32 \ 1 Scan120 | |
| Suggested letter stating the policy of not recommending specific fuel brands, such as National Benzole Mixture. | 19th Feb 1932 | Box 32 \ 1 Scan121 | |
| Specifications of a 'Safety Fuel' from the Standard Oil Co in New Jersey. | 11th Mar 1932 | Box 32 \ 1 Scan122 | |
| List of octane values for various commercially available fuels tested on an S.30 engine. | 24th Mar 1933 | Box 32 \ 1 Scan123 | |
| The relationship between front wheel braking systems and the geometry of true pivotal steering. | 18th Feb 1910 | Box 32 \ 2 Scan001 | |
| Published letter to the editor discussing the merits of true pivotal steering, with a diagram and an image of a Rudge-Whitworth wheel. | 4th Mar 1911 | Box 32 \ 2 Scan002 | |
| Technical discussion in the form of two letters regarding the design of front wheel brakes and pivotal steering. | 13th Jun 1907 | Box 32 \ 2 Scan003 | |
| Departmental memo suggesting alterations to rear brakes to prevent them from sticking due to water and mud. | 18th Mar 1911 | Box 32 \ 2 Scan004 | |
| Instruction regarding special larger covers for brake drums on wheels. | 20th Oct 1911 | Box 32 \ 2 Scan005 | |
| Two proposed schemes for the length of the brake hand lever and gear. | 15th Feb 1912 | Box 32 \ 2 Scan006 | |
| Suggestion to try a different fabric lining for the footbrake, instead of Ferodo. | 24th Oct 1912 | Box 32 \ 2 Scan007 | |
| The design and condition of the brakes, propeller shaft, and universal joints. | 24th Nov 1913 | Box 32 \ 2 Scan008 | |
| The investigation of uneven wear on rear wheel foot brake liners following tests. | 22th Aug 1914 | Box 32 \ 2 Scan009 | |
| Suggestion to test rear brakes by attaching a rolled steel rim to a sheet metal disc centre. | 15th Jun 1915 | Box 32 \ 2 Scan010 | |
| Extract detailing modifications to the back axle and brakes on experimental cars to reduce weight. | 1st May 1919 | Box 32 \ 2 Scan011 | |
| Requesting the standardization of a small stud to prevent outer brake shoe springs from fouling the inner brake drum. | 27th Aug 1919 | Box 32 \ 2 Scan012 | |
| Recommending an increase in clearance for the Brake Rope Connections on the 40/50 Chassis. | 29th Aug 1919 | Box 32 \ 2 Scan013 | |
| Prevention of oil leakage to the brakes from the back axle by fitting diaphragms. | 23th Sep 1919 | Box 32 \ 2 Scan014 | |
| Prints for making three experimental sets of a proposed oil catcher for the rear axle of a 40/50 chassis. | 23th Sep 1919 | Box 32 \ 2 Scan015 | |
| Issues with rear axle brake lubrication and arguing against American suggestions to remove lubricators. | 29th Jan 1920 | Box 32 \ 2 Scan016 | |
| Lubrication of the rear axle brake mechanism and the potential use of oilless bearings. | 2nd Feb 1920 | Box 32 \ 2 Scan017 | |
| Lubrication issues with the rear axle brake mechanism and a proposal for improvement. | 7th Sep 1920 | Box 32 \ 2 Scan018 | |
| Extract listing future schemes and improvements for starter and ignition systems. | 7th Sep 1920 | Box 32 \ 2 Scan019 | |
| Letter to Ferodo Limited regarding the co-efficient of friction for 9L brake and clutch material. | 7th Mar 1921 | Box 32 \ 2 Scan020 | |
| Letter confirming an order for 250 sets of Brake Shoe Facings made from the latest Ferobestos material. | 3rd Mar 1921 | Box 32 \ 2 Scan021 | |
| Test results for Ferodo brake material without brass wire, noting a lower co-efficient of friction. | 3rd Mar 1921 | Box 32 \ 2 Scan022 | |
| Acceptable gap for loose wheel flanges with reference to Goodyear and Dunlop specifications. | 5th Apr 1921 | Box 32 \ 2 Scan023 | |
| Faulty working brakes, specifically the seizing of the rear axle mechanism and related lubrication issues. | 25th Apr 1921 | Box 32 \ 2 Scan024 | |
| Squeaking brake mechanisms, attributing the fault to over-lubrication of the guide pins. | 10th Aug 1921 | Box 32 \ 2 Scan025 | |
| Brake polishing issues and proposing tests with a new brake material and annealed brake drums. | 10th Aug 1921 | Box 32 \ 2 Scan026 | |
| Footbrake glazing issues on the 40/50 chassis, proposing a new annealing treatment for brake drums. | 10th Oct 1921 | Box 32 \ 2 Scan027 | |
| Correspondence with supplier Ferodo Ltd. about a missing graph for a 40/50 HP chassis rear hub and brake. | 13th Oct 1921 | Box 32 \ 2 Scan028 | |
| Suggesting experimental tests to address issues with brake drum polishing and the consequent loss of braking effectiveness. | 14th Oct 1921 | Box 32 \ 2 Scan029 | |
| Performance, materials, and friction coefficient of brake drums and Ferodo brake liners. | 14th Oct 1921 | Box 32 \ 2 Scan030 | |
| Continued letter discussing experimental work and requesting assistance from Messrs. Ferodo Ltd. | 14th Oct 1921 | Box 32 \ 2 Scan031 | |
| Proposal to supply Ferodo Ltd. with a complete rear hub and brake assembly for testing brake liners. | 11th Nov 1921 | Box 32 \ 2 Scan032 | |
| Request for the return of a loaned pamphlet concerning 4-wheel brakes. | 4th Nov 1921 | Box 32 \ 2 Scan033 | |
| Brief note of thanks for a pamphlet on 4-wheel braking, which is being returned. | 5th Nov 1921 | Box 32 \ 2 Scan034 | |
| Cover note from Hs. to R. regarding an attached article on four-wheel braking. | 8th Nov 1921 | Box 32 \ 2 Scan035 | |
| Modification to the heat treatment process for 40/50 chassis brake drums. | 25th Aug 1922 | Box 32 \ 2 Scan036 | |
| Material characteristics and friction coefficient of the Ferodo brake lining on the 40/50 chassis rear brakes. | 3rd Oct 1922 | Box 32 \ 2 Scan037 | |
| Complaints of rattling brake ropes on the 40/50 chassis and a proposed temporary fix. | 12th Oct 1922 | Box 32 \ 2 Scan038 | |
| Sending drawings concerning the front wheel brakes of Saurer lorries. | 25th Oct 1922 | Box 32 \ 2 Scan039 | |
| Design and patent status of front wheel brakes used on Saurer Lorries. | 30th Oct 1922 | Box 32 \ 2 Scan040 | |
| Investigation report into the cause of rear brake squeaks, including a diagram of the brake shoes. | 28th Apr 1923 | Box 32 \ 2 Scan041 | |
| Foot brake issues, specifically squeaking and binding when brake shoes are reversed. | 30th May 1923 | Box 32 \ 2 Scan042 | |
| Blueprint and notice for a front wheel brake produced by Messrs LEMOINE. | 30th May 1923 | Box 32 \ 2 Scan043 | |
| Letter from Établissements Lemoine proposing their new HERBOT front-wheel braking system. | 29th May 1923 | Box 32 \ 2 Scan044 | |
| Promotional document in French for the Hersot front brake system by Établissements Lemoine. | 29th May 1923 | Box 32 \ 2 Scan045 | |
| Promotional leaflet for the Lemoine-patented Hersot front brake system, detailing its characteristics and advantages. | 29th May 1923 | Box 32 \ 2 Scan046 | |
| Tests to ascertain the effect of a 20 lb load on 40/50 Chassis Brake Springs G335 when heated to various temperatures. | 31th Aug 1923 | Box 32 \ 2 Scan047 | |
| Fifth laboratory test report on 40/50 Chassis Brake Springs G335, detailing changes in length after heat treatment. | 31th Aug 1923 | Box 32 \ 2 Scan048 | |
| Cover note for a press extract concerning the Midland Automobile Club's Shelsley Walsh Hill Climb. | 11th Sep 1923 | Box 32 \ 2 Scan049 | |
| Letter from automobile component manufacturer Alford & Alder regarding their patented Front Wheel Brakes. | 29th Sep 1923 | Box 32 \ 2 Scan050 | |
| Continuation sheet of a letter from Alford & Alder regarding the trial of their brakes. | 27th Nov 1923 | Box 32 \ 2 Scan051 | |
| Attaching a copy of the description and blueprints for the U.S. Axle Company's front wheel brake design. | 27th Nov 1923 | Box 32 \ 2 Scan052 | |
| Letter forwarding a front wheel brake design from the U.S. Axle Company for inspection and comment. | 16th Nov 1925 | Box 32 \ 2 Scan053 | |
| Letter to the U.S. Axle Company acknowledging receipt of front wheel brake blueprints and forwarding them to the design department in England. | 16th Nov 1923 | Box 32 \ 2 Scan054 | |
| Copy of a document from The U.S. Axle Company detailing their front wheel brake data. | 16th Nov 1923 | Box 32 \ 2 Scan055 | |
| Graph of torque input versus torque output, showing the friction effect for a W.W. slow speed servo. | 18th Jun 1924 | Box 32 \ 2 Scan056 | |
| Excessive wear on brake drums for chassis 56-S-5 and the proposed repair procedures. | 18th Jun 1924 | Box 32 \ 2 Scan057 | |
| Air Brakes and the forwarding of related documents. | 7th Jul 1924 | Box 32 \ 2 Scan058 | |
| The inaccuracies of road tests published in motor papers due to speedometer errors. | 1st Mar 1925 | Box 32 \ 2 Scan059 | |
| Analysing the improbable performance claims of a 45 HP Renault competitor vehicle. | 21th Mar 1925 | Box 32 \ 2 Scan060 | |
| Page discussing vehicle performance discrepancies and testing methods. | 21th Mar 1925 | Box 32 \ 2 Scan061 | |
| Renault acceleration curves and horsepower calculations. | 21th Mar 1925 | Box 32 \ 2 Scan062 | |
| Concave HP curves and the impossibility of constant acceleration in touring car engines. | 1st Mar 1925 | Box 32 \ 2 Scan063 | |
| Analyzing braking test methodologies and their inherent inaccuracies. | 23th Mar 1925 | Box 32 \ 2 Scan064 | |
| Brake efficiency and critiquing braking curves from 'The Motor' magazine. | 1st Mar 1925 | Box 32 \ 2 Scan065 | |
| Page 4 of an experimental report critiquing the braking test methodology used by 'The Motor' magazine. | 23th Mar 1925 | Box 32 \ 2 Scan066 | |
| Time-velocity curve graph for a 40/50 R.R. Open Touring car, comparing it with a 45 Renault. | 26th Feb 1923 | Box 32 \ 2 Scan067 | |
| Blueprint graph showing braking curves for a 40/50 model car under various conditions. | 19th Mar 1925 | Box 32 \ 2 Scan068 | |
| Three graphs comparing braking performance curves for a 14 HP Sports Delage, a 12-25 HP Vermorel, and an 11-24 Lagonda. | 23th Mar 1925 | Box 32 \ 2 Scan069 | |
| Stamped document from the Print Room in Derby. | 23th Mar 1925 | Box 32 \ 2 Scan070 | |
| Comparative analysis of velocity curves for a Bentley Speed Model and a Vermorel 12-25, with commentary. | 17th Mar 1925 | Box 32 \ 2 Scan071 | |
| Blank document page featuring a red ink stamp. | 25th May 1925 | Box 32 \ 2 Scan072 | |
| Graphical analysis of the acceleration curves for a 45 HP Renault. | 3rd Mar 1925 | Box 32 \ 2 Scan073 | |
| Blank document sheet with a Print Room stamp. | 21th Mar 1925 | Box 32 \ 2 Scan074 | |
| Graph charting the average coefficient of friction and temperature of Ferodo bonded asbestos lining over one hour. | 8th May 1925 | Box 32 \ 2 Scan075 | |
| Stamped page from the Print Room with a list of four handwritten numbers. | 8th May 1925 | Box 32 \ 2 Scan076 | |
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