| Description | Date | Identifier | |
| Standardisation of positions for the steering column and side levers. | 25th Oct 1918 | Box 76 \ 4 scan0075 | |
| Page 2 of a letter requesting an opinion, with various handwritten calculations. | 25th Oct 1918 | Box 76 \ 4 scan0076 | |
| Requesting a reply regarding the position of the column and sidelevers for cars. | 25th Oct 1918 | Box 76 \ 4 scan0077 | |
| Confirming the satisfactory performance of 'D' type side levers with a steering wheel in the 'C' position on a new chassis. | 29th May 1919 | Box 76 \ 4 scan0078 | |
| Parts list for the 'G' Section assembly of Chassis 1. E.X. | 30th Jun 1919 | Box 76 \ 4 scan0079 | |
| Alterations to the position of hand and brake levers for streamline bodywork. | 28th Jan 1920 | Box 76 \ 4 scan0080 | |
| Suggestion to remove the reverse guard mechanism and a request from Mr. Royce to obtain opinions on the matter. | 28th Jan 1920 | Box 76 \ 4 scan0081 | |
| Customer complaints about the length of chassis side levers and proposing a shorter brake lever. | 4th May 1920 | Box 76 \ 4 scan0082 | |
| Ergonomics and proposed repositioning of the side brake lever. | 5th Jul 1921 | Box 76 \ 4 scan0083 | |
| Disadvantages of removing the reverse trigger from the change speed lever and proposing to cancel the modification. | 13th Nov 1922 | Box 76 \ 4 scan0084 | |
| Confirming Mr. Royce's agreement regarding a change speed lever without a reverse trigger. | 15th Nov 1922 | Box 76 \ 4 scan0085 | |
| Design and production implications of a new side change gear box with a servo system for front wheel brakes. | 14th Dec 1922 | Box 76 \ 4 scan0086 | |
| Adoption of left-hand steering and four-wheel brakes for the American market, and general braking performance. | 7th Dec 1922 | Box 76 \ 4 scan0087 | |
| Desirability of a shorter change speed lever for the 40/50 HP model. | 10th Apr 1924 | Box 76 \ 4 scan0088 | |
| Pros and cons of fitting a shorter experimental gear change lever to a 40/50 HP car. | 8th Apr 1924 | Box 76 \ 4 scan0089 | |
| Proposal to standardize a 2-inch shorter change speed lever for the 40/50 HP chassis, following testing. | 2nd Jun 1924 | Box 76 \ 4 scan0090 | |
| From DA to HS requesting an experimental report on a shorter change speed lever. | 21th Jun 1924 | Box 76 \ 4 scan0091 | |
| Fitment of a shorter change speed lever on a 40/50 HP car with a Hooper open touring body. | 25th Jun 1924 | Box 76 \ 4 scan0092 | |
| Standardisation proposal for a shorter change speed lever to suit coachwork. | 6th Jun 1924 | Box 76 \ 4 scan0093 | |
| Imperfections and necessary improvements for the side brake and change speed levers on a steel body subframe chassis. | 8th Jun 1925 | Box 76 \ 4 scan0094 | |
| Page 2 of a memorandum discussing a simplification to the spring design for the side control. | 8th Jan 1921 | Box 76 \ 4 scan0095 | |
| Preliminary road test report on the 'Goshawk' chassis, detailing the performance of its components. | 8th Jan 1921 | Box 76 \ 4 scan0096 | |
| Feedback on the Goshawk I car's change speed lever, noting stiff springs and poor positioning. | 7th Feb 1921 | Box 76 \ 4 scan0097 | |
| Positioning of change speed levers and the stiffness of control springs for the Goshawk 11 engine arrangement. | 8th Feb 1921 | Box 76 \ 4 scan0098 | |
| Instructions for lighter springs to be put in the change-speed lever for the Goshawk I Car. | 8th Feb 1921 | Box 76 \ 4 scan0099 | |
| Design and positioning of Goshawk side levers for B and D type steering. | 6th Jul 1923 | Box 76 \ 4 scan0100 | |
| Concluding page of a letter confirming that a matter is receiving attention. | 7th Jun 1923 | Box 76 \ 4 scan0101 | |
| Seating accommodation and side lever placement for the Goshawk model. | 7th Jun 1923 | Box 76 \ 4 scan0102 | |
| Urgent rigging of dummy right-hand control levers for a 20 HP car. | 13th Jul 1923 | Box 76 \ 4 scan0103 | |
| Proposal to take a 20 HP car fitted with mock-up right-hand control levers for examination. | 8th Jul 1923 | Box 76 \ 4 scan0104 | |
| Modifications to the right-hand levers for the Goshawk II model. | 19th Jul 1923 | Box 76 \ 4 scan0105 | |
| The planned arrival of a 20 HP car at Conduit Street and subsequent departure to Chichester. | 21th Jul 1923 | Box 76 \ 4 scan0106 | |
| Letter from 'R' requesting weekly progress reports on various mechanical works including steering, springs, brakes and gearbox. | 16th Jan 1924 | Box 76 \ 4 scan0107 | |
| Internal secret memo discussing progress on EAC projects, addressing delays, and clarifying the nomenclature for different EAC models. | 16th Jan 1924 | Box 76 \ 4 scan0108 | |
| Status and design of various chassis models, gearboxes, and other components. | 8th Jun 1925 | Box 76 \ 4 scan0109 | |
| Issues and proposed improvements for the side brake and change speed levers. | 8th Jun 1925 | Box 76 \ 4 scan0110 | |
| Typed memo discussing a modification to a spring design for the side control. | 1st Jun 1928 | Box 76 \ 4 scan0111 | |
| Side lever mechanism for the 20 HP chassis, focusing on brake lever flexibility and proposing design changes. | 1st Jun 1928 | Box 76 \ 4 scan0112 | |
| Dimensions and proposed modifications for brake and change gear levers on various car models. | 1st Jun 1928 | Box 76 \ 4 scan0113 | |
| Flexibility and length of the change gear lever, comparing 'D' and 'B' types. | 1st Jun 1928 | Box 76 \ 4 scan0114 | |
| Outlining specifications for a small chassis, referencing the Goshawk model. | 17th Nov 1920 | Box 76 \ 4 scan0115 | |
| Repositioning of the central control levers for the driver. | 10th Nov 1922 | Box 76 \ 4 scan0116 | |
| Chassis arrangements seen at a show and proposed modifications for the 6.EX car using Goshawk parts. | 10th Nov 1922 | Box 76 \ 4 scan0117 | |
| List of modifications for the 6.EX. car model, detailing 23 changes and their origins. | 19th Jan 1923 | Box 76 \ 4 scan0118 | |
| Modification of the central change gear to a side position for the Goshawk chassis. | 19th Jan 1923 | Box 76 \ 4 scan0119 | |
| Various design improvements for axles, dynamo drive, track width, and brake lever position. | 15th May 1923 | Box 76 \ 4 scan0120 | |
| The arrangement of central change levers for the Goshawk II, including pedal spring anchorage. | 20th Aug 1923 | Box 76 \ 4 scan0121 | |
| Article from 'The Autocar' magazine discussing the principles of friction and lubrication. | 12th Aug 1911 | Box 76 \ 4 scan0122 | |
| Article from 'The Autocar' magazine discussing the principles of bearing lubrication and potential failure points. | 12th Aug 1911 | Box 76 \ 4 scan0123 | |
| Article from 'The Autocar' magazine discussing engine friction, lubrication methods, and oil viscosity. | 19th Aug 1911 | Box 76 \ 4 scan0124 | |
| Technical article discussing lubrication issues, including foreign matter in oil, the preference of oil over grease, and power loss from unlubricated brakes. | 2nd Sep 1913 | Box 76 \ 4 scan0125 | |
| Response to Mr. Desnos's complaints regarding lubrication instructions and modifications to the 4-speed gearbox. | 2nd Sep 1913 | Box 76 \ 4 scan0126 | |
| Query regarding the lubrication interval for the propeller shaft universal joint. | 11th Sep 1913 | Box 76 \ 4 scan0127 | |
| Query regarding the lubrication mileage for the propeller shaft universal joint. | 13th Sep 1913 | Box 76 \ 4 scan0128 | |
| Query and response regarding the lubrication interval for the propeller shaft universal joint. | 11th Sep 1913 | Box 76 \ 4 scan0129 | |
| Re-lubrication mileage interval for car X.726. | 19th Sep 1913 | Box 76 \ 4 scan0130 | |
| Internal correspondence routing slip regarding a letter from 'Motor Trader'. | 6th Feb 1914 | Box 76 \ 4 scan0131 | |
| Internal inquiry regarding recommended lubricating oils and their average mileage for various vehicle components. | 10th Feb 1914 | Box 76 \ 4 scan0132 | |
| Recommended lubricating oils and greases for various vehicle components. | 10th Feb 1914 | Box 76 \ 4 scan0133 | |
| Request from 'Motor Trader' for a list of recommended lubricating oils. | 12th Feb 1914 | Box 76 \ 4 scan0134 | |
| Letter detailing recommended lubricants for a chassis, including engine oil, gear oil, and grease for different seasons and components. | 13th Feb 1914 | Box 76 \ 4 scan0135 | |
| Page 2 of a memo discussing lubrication procedures and the supply of information to the 'Motor Trader'. | 3rd Dec 1914 | Box 76 \ 4 scan0136 | |
| Change in lubrication frequency for the Universal Joint in the Instruction Book. | 3rd Dec 1914 | Box 76 \ 4 scan0137 | |
| Lubrication frequency of universal joints and possible causes for seizure. | 4th Dec 1914 | Box 76 \ 4 scan0138 | |
| Myers System of Chassis Lubrication. | 22th Jul 1921 | Box 76 \ 4 scan0139 | |
| Title page for a reprint titled 'New Methods of Chassis Lubrication' by Cornelius T. Myers. | 28th Feb 1918 | Box 76 \ 4 scan0140 | |
| Article from 'Automotive Industries' magazine discussing new methods of chassis lubrication, including oil-less bushings, direct feed, and wick feed systems. | 28th Feb 1918 | Box 76 \ 4 scan0141 | |
| Article on chassis lubrication methods, comparing oil and grease, with illustrations of various oiling systems. | 28th Feb 1918 | Box 76 \ 4 scan0142 | |
| From a publication detailing various methods of automotive chassis lubrication from the early 20th century. | 28th Feb 1918 | Box 76 \ 4 scan0143 | |
| Damage to the front spring lubricator on 40/50 HP models and a proposed solution. | 16th Feb 1927 | Box 76 \ 4 scan0144 | |
| Clearance issues and potential solutions for front spring lubricators on the 40/50 HP chassis. | 17th Feb 1927 | Box 76 \ 4 scan0145 | |
| Letter discussing lubrication options, including types of oils, greases, and application methods. | 24th Oct 1927 | Box 76 \ 4 scan0146 | |
| From F.H. Royce regarding lubrication preferences for crane work and slow-moving parts. | 25th Apr 1921 | Box 76 \ 4 scan0147 | |
| The use of an 'Alemite' or similar screw syringe grease system for the Goshawk 11 chassis lubrication. | 25th Apr 1921 | Box 76 \ 4 scan0148 | |
| Modifications to the Goshawk engine lubrication system. | 9th Nov 1921 | Box 76 \ 4 scan0149 | |
| Over-oiling issues and strainer specifications for the Goshawk 11 engine. | 19th Jan 1922 | Box 76 \ 4 scan0150 | |
| Typed memorandum about engine oil change procedures for new engines and the 40/50 model. | 26th Apr 1917 | Box 76 \ 4 scan0151 | |
| Request for a chassis drawing showing lubrication points and frequency for the 7-Goshawk-II. | 27th Jun 1922 | Box 76 \ 4 scan0152 | |
| Discouraging the use of thick oil in gearboxes and back axles due to handling issues in cold weather. | 29th Nov 1924 | Box 76 \ 4 scan0153 | |
| Dashpots for parallel air and steel springs, discussing the viscosity of oil under pressure and varying temperatures. | 30th Jul 1914 | Box 76 \ 4 scan0154 | |
| Note from Mr. Ionides regarding experiments with lubricating oil viscosity. | 2nd Oct 1914 | Box 76 \ 4 scan0155 | |
| Test report comparing the viscosity of Glycerine and Motorine B and C at different temperatures. | 9th Oct 1914 | Box 76 \ 4 scan0156 | |
| Departmental memo requesting information on oil specifications to find a suitable oil for use in Russia. | 15th Jan 1915 | Box 76 \ 4 scan0157 | |
| Departmental memo discussing the selection of suitable oils for Russia, requesting experiment graphs and proposing customer information cards. | 15th Jan 1915 | Box 76 \ 4 scan0158 | |
| Request for details and particulars on perfect oils for engine, gearbox, and back axle for use in Russia. | 15th Jan 1915 | Box 76 \ 4 scan0159 | |
| Characteristics and test results for Motorine B, Motorine C, and Amber Gear Oil. | 3rd Feb 1915 | Box 76 \ 4 scan0160 | |
| Follow-up memo requesting particulars and analysis of oils for use in Russia. | 4th Feb 1915 | Box 76 \ 4 scan0161 | |
| Suitable oils for use in Russia, including a table of their characteristics. | 5th Feb 1915 | Box 76 \ 4 scan0162 | |
| Laboratory tests of 'Motorine C' and 'Gas Engine Oil' compared to other oils. | 1st May 1919 | Box 76 \ 4 scan0163 | |
| Conclusion of an oil analysis report finding a gas engine oil unsuitable as a substitute for Castrol R. | 21th Aug 1919 | Box 76 \ 4 scan0164 | |
| Experiments with different lubricating oils and their qualities. | 21th Aug 1919 | Box 76 \ 4 scan0165 | |
| Use and testing of lubricating oils, including Neatsfoot oil for leather. | 22th Aug 1919 | Box 76 \ 4 scan0166 | |
| And comparing different lubricating oils and suppliers for car and aero engines. | 22th Aug 1919 | Box 76 \ 4 scan0167 | |
| Importance of using the correct engine oil to prevent wear on pistons, rings, and bearings. | 22th Aug 1919 | Box 76 \ 4 scan0168 | |
| Progress on piston knock issues, focusing on lubrication and the use of castor oil. | 1st Sep 1919 | Box 76 \ 4 scan0169 | |
| Engine oil consumption and the possibilities of draining the crankcase more easily. | 22th Sep 1919 | Box 76 \ 4 scan0170 | |
| Requesting recommendations for lubricating oils for the engine, gearbox, and axle. | 1st Sep 1919 | Box 76 \ 4 scan0171 | |
| Unsuitability of thick lubricating oils for gearboxes. | 4th Sep 1919 | Box 76 \ 4 scan0172 | |
| Recommendation of Castrol oil for engines, its cost-effectiveness, and properties compared to other lubricants. | 9th Sep 1919 | Box 76 \ 4 scan0173 | |
| Use of Castrol versus a mixture of Price's oils for lubricating car engines and gears. | 9th Sep 1919 | Box 76 \ 4 scan0174 | |
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