| Description | Date | Identifier | |
| The development and comparison of various gearbox and transmission technologies. | 1st Nov 1930 | Box 6 \ 2 02-page127 | |
| Design update memo discussing the development of a new 3-speed gearbox with pre-selection. | 4th Nov 1930 | Box 6 \ 2 02-page128 | |
| Modifications and additions for a revised epicyclic 3rd speed gearbox. | 4th Nov 1930 | Box 6 \ 2 02-page129 | |
| Revised details for an epicyclic 3rd speed gearbox, including a query about a fabric coupling. | 7th Nov 1930 | Box 6 \ 2 02-page130 | |
| Modifications to the servo and brake arrangements for a revised epicyclic 3rd speed gearbox. | 7th Nov 1930 | Box 6 \ 2 02-page131 | |
| Gearbox problem and a proposed electrical change speed gear with a magnetically coupled clutch. | 27th Nov 1930 | Box 6 \ 2 02-page132 | |
| Revisions to the Epicyclic 3rd Speed Gearbox and related schematics. | 11th Nov 1930 | Box 6 \ 2 02-page133 | |
| Modification to shorten the oil pump for the epicyclic 3rd speed gearbox. | 2nd Nov 1930 | Box 6 \ 2 02-page134 | |
| Proposed assembly procedure for a revised epicyclic 3rd speed gearbox. | 30th Nov 1930 | Box 6 \ 2 02-page135 | |
| Design and testing of epicyclic gearbox units for 25HP & 45HP models, including gear types and braking systems. | 20th Dec 1930 | Box 6 \ 2 02-page136 | |
| Allocation of work for a steering column job related to a vacuum control pre-selection scheme. | 20th Dec 1930 | Box 6 \ 2 02-page137 | |
| Revisions to the vacuum control for an epicyclic 3rd speed gearbox, specifically regarding the piston and stops. | 10th Jan 1931 | Box 6 \ 2 02-page138 | |
| Design considerations and alternatives for a reverse gear mechanism in a gearbox, comparing Maybach and Silver Ghost types. | 23th Jan 1931 | Box 6 \ 2 02-page139 | |
| Hand-drawn sketch of a gearbox assembly with annotations. | 25th Jan 1931 | Box 6 \ 2 02-page140 | |
| Design of an eccentrically engaged reverse gear, including pinion materials and tooth profiles. | 25th Jan 1931 | Box 6 \ 2 02-page141 | |
| Alternative gear and layshaft designs, referencing the Phantom II model. | 25th Jan 1931 | Box 6 \ 2 02-page142 | |
| Sketch of a swinging reverse gear mechanism. | 25th Jan 1931 | Box 6 \ 2 02-page143 | |
| Final urgent recommendation with a sketch detailing the assembly of a shaft and pinion within a box. | 2nd Mar 1931 | Box 6 \ 2 02-page144 | |
| Required alterations to easy change silent gearboxes based on information from Dr. Maybach. | 2nd Mar 1931 | Box 6 \ 2 02-page145 | |
| Design of change gears, specifically the issues with Maybach jaws and comparing them to alternative schemes. | 2nd Mar 1931 | Box 6 \ 2 02-page146 | |
| Investigation into combining Salerni rings with a Maybach coupling for a change gear. | 6th Mar 1931 | Box 6 \ 2 02-page147 | |
| Demonstration of a Maybach easy change gearbox and a proposed comparison with a Daimler system. | 6th Mar 1931 | Box 6 \ 2 02-page148 | |
| Arranging for a car from Stratton Instone to be brought to Conduit St for a meeting. | 9th Mar 1931 | Box 6 \ 2 02-page149 | |
| Arranging a meeting to see and try the '14-KX' in relation to Easy Change Gears. | 9th May 1931 | Box 6 \ 2 02-page150 | |
| Technical memo discussing gearbox design, improvements, and comparisons with Maybach gearboxes. | 3rd Mar 1931 | Box 6 \ 2 02-page151 | |
| Preliminary tests of an Epicyclic gearbox with vacuum controlled twin top change gear on chassis No. 27-EX. | 1st Mar 1931 | Box 6 \ 2 02-page152 | |
| Gearbox noise and gear change issues, specifically concerning epicyclic gears and Maybach dogs. | 31th Mar 1931 | Box 6 \ 2 02-page153 | |
| Gearbox issues, detailing noise, complexity, and proposed improvements to the gears and Maybach jaws. | 14th Mar 1931 | Box 6 \ 2 02-page154 | |
| Potential 'crashing engagement' issue with the Maybach change gear vacuum control. | 14th Mar 1931 | Box 6 \ 2 02-page155 | |
| Telegram from Loxandoux to Reycar regarding a vibration issue that occurs during acceleration in third gear. | 1st Apr 1937 | Box 6 \ 2 02-page156 | |
| Cablegram from France concerning a gearbox fault. | 2nd Apr 1931 | Box 6 \ 2 02-page157 | |
| Noise issue in a gearbox with epicyclic third speed and the proposed solution. | 3rd Apr 1931 | Box 6 \ 2 02-page158 | |
| Design challenges and mechanics of a new epicyclic gearbox scheme, focusing on gear meshing and speed synchronization. | 3rd Apr 1931 | Box 6 \ 2 02-page159 | |
| Gear changes, throttle operation, and the design of face jaws for a Maybach component. | 17th Apr 1931 | Box 6 \ 2 02-page160 | |
| Technical memorandum discussing the design and merits of a double top gear system. | 17th Apr 1931 | Box 6 \ 2 02-page161 | |
| Brief typed note regarding a potential issue with jaws and gears. | 9th Apr 1931 | Box 6 \ 2 02-page162 | |
| Two points regarding issues with an epicyclic 3rd speed gearbox. | 9th Apr 1931 | Box 6 \ 2 02-page163 | |
| Slow progress in developing an Epicyclic Easy Change Gearbox with a silent third gear. | 10th Apr 1931 | Box 6 \ 2 02-page164 | |
| Instructions for modifications to the Maybach dogs operating the epicyclic 3rd speed and top gear. | 13th Apr 1931 | Box 6 \ 2 02-page165 | |
| Epicyclic Easy Change Gearbox. | 13th Apr 1931 | Box 6 \ 2 02-page166 | |
| Patent royalties for Maybach jaws and comparing costs with Mr Ricardo's combustion chamber. | 14th Apr 1931 | Box 6 \ 2 02-page167 | |
| The testing and modification of an epicyclic 3rd speed gearbox following trials at Brooklands. | 16th Apr 1931 | Box 6 \ 2 02-page168 | |
| Issues and potential improvements for a gearbox with an epicyclic 3rd speed and Maybach clutch. | 17th Apr 1931 | Box 6 \ 2 02-page169 | |
| Letter questioning the decision not to acquire a Maybach gearbox for the Phantom II model, despite its successful trial. | 21th Apr 1931 | Box 6 \ 2 02-page170 | |
| Trial of a Buick car fitted with a synchro-mesh 'Easy Change Gear' device. | 21th Apr 1931 | Box 6 \ 2 02-page171 | |
| Cost and technical suitability of a license for the Maybach Easy Change Gear. | 21th Apr 1931 | Box 6 \ 2 02-page172 | |
| Trial of a Buick synchro mesh gearbox as an 'easy change gear' alternative. | 22th Apr 1931 | Box 6 \ 2 02-page173 | |
| Outlining the reasons against purchasing a Maybach gearbox, citing integration difficulties, performance, and royalty costs. | 28th Apr 1931 | Box 6 \ 2 02-page174 | |
| 'press button, electrical' scheme to gain a competitive advantage over Hispano and Bentley. | 23th Apr 1931 | Box 6 \ 2 02-page175 | |
| Proposed temporary brake fitting for an epicyclic 3rd speed gearbox. | 23th Apr 1931 | Box 6 \ 2 02-page176 | |
| Trial of a synchro mesh gearbox in a Buick car. | 27th Apr 1931 | Box 6 \ 2 02-page177 | |
| Investigation into 'Easy Change Gear' systems, including Voisin, Graham Paige, and Buick synchro-mesh. | 2nd May 1931 | Box 6 \ 2 02-page178 | |
| Acquisition of competitor cars and gearboxes for evaluation, specifically a Voisin and a Graham Paige. | 4th May 1931 | Box 6 \ 2 02-page179 | |
| Highlighting design 'fouls' on a print for an Epicyclic 3rd Speed Gearbox. | 6th May 1931 | Box 6 \ 2 02-page180 | |
| The challenges in obtaining silent helical gears for a quiet, easy-change third gear. | 7th May 1931 | Box 6 \ 2 02-page181 | |
| Clarifying intended modifications and instructions for an epicyclic 3-speed gearbox. | 1st May 1931 | Box 6 \ 2 02-page182 | |
| Design of a future 25HP synchromesh gearbox, comparing it with a Buick design. | 28th May 1931 | Box 6 \ 2 02-page183 | |
| The conversion to an electrically controlled friction type gearbox. | 28th May 1931 | Box 6 \ 2 02-page184 | |
| Query regarding gear lever movement and load for a J. & S. Synchro Mesh Gearbox, seeking comparison data from a Buick. | 24th Jun 1931 | Box 6 \ 2 02-page185 | |
| Letter and proposal from General Motors about a synchromesh transmission. | 8th Jul 1931 | Box 6 \ 2 02-page186 | |
| Letter from a consulting engineer regarding royalty terms for a Synchro Mesh Transmission patent. | 7th Jul 1931 | Box 6 \ 2 02-page187 | |
| Concluding page of a letter from W.W. Constantine requesting remarks. | 9th Jul 1931 | Box 6 \ 2 02-page188 | |
| Revisions to the epicyclic 3rd speed gearbox, friction clutch, and brake. | 9th Jul 1931 | Box 6 \ 2 02-page189 | |
| Sticking and concentricity of cones in a synchro-mesh gearbox, referencing Buick's lapping instructions. | 19th Sep 1931 | Box 6 \ 2 02-page190 | |
| Technical note on gear sleeve alignment and a proposal to use a bronze stirrup to reduce friction. | 22th Sep 1931 | Box 6 \ 2 02-page191 | |
| Road test report on a 25 HP Synchro Mesh Gearbox, comparing its performance to a Buick and noting an issue with noise at idle. | 22th Sep 1931 | Box 6 \ 2 02-page192 | |
| Success and implementation of a new synchromesh gearbox with a silent third gear. | 1st Jan 1931 | Box 6 \ 2 02-page193 | |
| Adoption of synchro mesh and proposing a new epicyclic gear design. | 28th Oct 1931 | Box 6 \ 2 02-page194 | |
| Gearbox scheme involving synchronised brakes, an epicyclic unit, and a jaw clutch drive. | 6th Nov 1931 | Box 6 \ 2 02-page195 | |
| The synchro-mesh gearbox, discussing the reverse shaft and forward bearing design. | 6th Nov 1931 | Box 6 \ 2 02-page196 | |
| Request to arrange test runs on competitor cars to evaluate their silent gearboxes. | 16th Dec 1931 | Box 6 \ 2 02-page197 | |
| Competitive necessity of developing a synchromesh gearbox for all forward gears. | 19th Apr 1932 | Box 6 \ 2 02-page198 | |
| Report for the Technical Committee on experiences with detachable rims from various manufacturers. | 16th Nov 1911 | Box 6 \ 3 03-page01 | |
| Request for the names of other manufacturers of detachable rims following a report on interchangeability and balance issues. | 23th Nov 1911 | Box 6 \ 3 03-page02 | |
| Departmental memo regarding issues with various makers of detachable rims. | 29th Nov 1911 | Box 6 \ 3 03-page03 | |
| Departmental memo requesting specific details on issues with Captain, Cave, Sankey and Spencer Moulton wheel rims. | 15th Dec 1911 | Box 6 \ 3 03-page04 | |
| Departmental memo replying to a query about balance and fitment problems with various detachable rims. | 20th Dec 1911 | Box 6 \ 3 03-page05 | |
| Log card for Continental Rims (U.S.A.) of the type 'flutes'. | 18th Dec 1912 | Box 6 \ 3 03-page06 | |
| The fitting of Continental parts, wheels, and rims. | 23th Aug 1932 | Box 6 \ 3 03-page07 | |
| Testing and disadvantages of American Continental Rims. | 19th Aug 1912 | Box 6 \ 3 03-page08 | |
| List of seven disadvantages associated with a specific type of wheel rim. | 7th Sep 1920 | Box 6 \ 3 03-page09 | |
| Extract discussing high-speed steering, wheel types, transmission knock, and suspension. | 7th Sep 1920 | Box 6 \ 3 03-page10 | |
| Copy of a minute from a Technical Committee meeting discussing Vinet and Michelin rim patents. | 4th Jan 1912 | Box 6 \ 3 03-page11 | |
| Departmental memo to Mr. Johnson following up on a previous query from October 11th. | 30th Oct 1912 | Box 6 \ 3 03-page12 | |
| Departmental memo regarding an enquiry into instructions for designing a detachable rim. | 2nd Nov 1912 | Box 6 \ 3 03-page13 | |
| Departmental memo to Mr Barrington regarding a delay with instructions for detachable rims for Mr Spinney. | 14th Nov 1912 | Box 6 \ 3 03-page14 | |
| The failure of demountable rims on 40/50 HP cars and the subsequent agreement with Dunlop to fit a locking plate. | 8th Aug 1924 | Box 6 \ 3 03-page15 | |
| The performance, advantages, and disadvantages of balloon tyres. | 14th Mar 1924 | Box 6 \ 3 03-page16 | |
| The challenges of recommending tyres due to the lack of standardization in rim and tyre sizes. | 12th Jul 1928 | Box 6 \ 3 03-page17 | |
| Adoption of low-pressure tyres and suitable wheel sizes for the 20 HP car. | 12th Jul 1928 | Box 6 \ 3 03-page18 | |
| Letter to The Dunlop Rubber Co. querying the availability of 20' rims and silent tread tyres. | 14th Jul 1928 | Box 6 \ 3 03-page19 | |
| Standardisation of chassis parts relating to 20 inch rims and 6 inch tyres for the 20 HP model. | 24th Jul 1928 | Box 6 \ 3 03-page20 | |
| Cost and schedule document for fitting a new part to a chassis. | 3rd Nov 1928 | Box 6 \ 3 03-page21 | |
| Selection of wheel rim sizes for 'SS' cars. | 20th Feb 1929 | Box 6 \ 3 03-page22 | |
| Requesting the experimental production of straight-tooth constant mesh gears for the Goshawk II gearbox. | 28th Oct 1921 | Box 6 \ 4 04-page001 | |
| The Goshawk II footboards, specifying the metalwork for the Change Gear Mechanism should be in two pieces. | 27th Apr 1922 | Box 6 \ 4 04-page002 | |
| Delivery of 20HP chassis fitted with coarse pitch bevel gears, conditional upon the completion of a 10,000-mile trial. | 5th May 1923 | Box 6 \ 4 04-page003 | |
| The standardization and release of chassis fitted with 20-HP, 11x50 axles. | 4th Jun 1923 | Box 6 \ 4 04-page004 | |
| Urgent internal memo regarding the standardisation of 11 x 50 axles for 20-HP Chassis. | 4th Jun 1923 | Box 6 \ 4 04-page005 | |
| Urgent memo regarding the testing and release of new 20 HP axles, with a request to ship two chassis to Australia. | 4th Jun 1923 | Box 6 \ 4 04-page006 | |
| | | | |
