| Description | Date | Identifier | |
| Sourcing and testing of new back axle forgings and the elimination of jaggering brakes which cause fractures. | 23th Dec 1912 | Box 2 \ 6 B002_X 140 141 157-page041 | |
| New lighter rear axle design, focusing on using forgings over castings and discontinuing jaggering brakes. | 30th Dec 1912 | Box 2 \ 6 B002_X 140 141 157-page042 | |
| Proposing tests for oil shock dampers and axle strength, comparing different spring systems. | 12th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page043 | |
| Brief directive from Mr. Royce regarding an urgency report. | 5th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page044 | |
| From F.H.R. to Mr Wormald regarding the policy for improving axles through better design and machinery. | 4th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page045 | |
| Attaching a production card and instruction sheets for a light axle adjusting rig, which has been cancelled. | 20th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page046 | |
| Instruction sheet regarding the creation of patterns for a rear light axle adjusting rig. | 20th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page047 | |
| Testing of a back axle by bumping, referencing an extract from Mr. Royce's memo on spring types. | 25th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page048 | |
| Extract from a memo by Mr. Royce concerning a clerical error in ratios. | 25th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page049 | |
| Extract from Mr. Royce's memo regarding work already completed on axles. | 25th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page050 | |
| Method for testing the strength of the back axle using different spring systems. | 6th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page051 | |
| Gear ratios for a new light axle design and correcting a clerical error. | 6th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page052 | |
| Remark from Mr. Royce on an Urgency report regarding gear ratio and pitch. | 5th Feb 1913 | Box 2 \ 6 B002_X 140 141 157-page053 | |
| Departmental memo regarding a modification to special nuts for axle tubes and other special places. | 6th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page054 | |
| Departmental memo concerning a new design of light axle with stronger bolts, referencing an experiment and comments from Mr Royce. | 6th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page055 | |
| Instructions detailing alterations to an axle, delayed by priority work on a new 4-speed gearbox and change levers. | 12th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page056 | |
| To Mr. Royce regarding the new design of a light axle with stronger bolts, referencing an attached report. | 12th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page057 | |
| Modification to the design of special nuts for axle tubes and other special places. | 14th Mar 1913 | Box 2 \ 6 B002_X 140 141 157-page058 | |
| Advocating for the introduction of a new light back axle and discussing its manufacture. | 22th May 1913 | Box 2 \ 6 B002_X 140 141 157-page059 | |
| Use of fine pitch bevel gears for back axles to mitigate noise. | 22th May 1913 | Box 2 \ 6 B002_X 140 141 157-page060 | |
| Proposed improvements for a new light rear axle. | 2nd Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page061 | |
| Instructions to Mr. Royce regarding blueprints and modifications for a new light axle. | 2nd Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page062 | |
| Instructions to Mr. Royce regarding the design and production of a new light axle. | 2nd Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page063 | |
| From F.H.R. regarding strengthening the light back axle and torque tubes. | 28th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page064 | |
| Benefits of a tie-rod for a new light axle and regretting the lack of prior testing. | 8th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page065 | |
| To Mr. Royce clarifying points on the Light Strengthened Axle. | 12th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page066 | |
| Continuation page of stress and load calculations for a car's axle tube and flange assembly. | 12th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page067 | |
| Comparing the axle tube specifications of model G.2682 with those of a standard car torque tube. | 12th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page068 | |
| To Mr Royce regarding a light strengthened axle, enclosing a memo from Mr Bailey and two blueprints. | 12th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page069 | |
| From Mr. Royce on the urgency of improvements following a breakdown and for ease of manufacture. | 28th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page070 | |
| Urgency report from Mr. Royce regarding the cancellation of bouncing tackle. | 28th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page071 | |
| Redesign of a Light Axle with stronger bolts following a breakdown, with improvements for ease of manufacture. | 29th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page072 | |
| Design improvements for the Light Back Axle, including the torque tube and central box. | 2nd May 1913 | Box 2 \ 6 B002_X 140 141 157-page073 | |
| Departmental memo regarding the modification to the design of special nuts for axle tubes. | 9th May 1913 | Box 2 \ 6 B002_X 140 141 157-page074 | |
| Experiment No.140 regarding the modification of special nuts G.2093 for Torque Tube Bolts. | 14th May 1913 | Box 2 \ 6 B002_X 140 141 157-page075 | |
| Modification to the design of special nuts for axle tubes. | 1st Jul 1918 | Box 2 \ 6 B002_X 140 141 157-page076 | |
| Description of a vehicle's rear axle assembly, including the axle tube, bearings, shafts, differential, and axle box. | 24th Nov 1913 | Box 2 \ 6 B002_X 140 141 157-page077 | |
| The fitting of new axles and pivots for 10 HP cars due to interchangeability concerns. | 3rd Jul 1914 | Box 2 \ 6 B002_X 140 141 157-page078 | |
| Machining instruction sheet with specifications for bevel gears, including wheel and pinion dimensions and change gear settings. | 14th Apr 1913 | Box 2 \ 6 B002_X 140 141 157-page079 | |
| Mr. Royce's anxiety to switch rear axle production from steel castings to drop forgings. | 2nd Sep 1913 | Box 2 \ 6 B002_X 140 141 157-page080 | |
| Extract regarding a lightening process and weight reduction for the back axle and rear brakes. | 9th Sep 1916 | Box 2 \ 6 B002_X 140 141 157-page081 | |
| Extract from a report on Chassis No 7-CA concerning its road-holding capabilities. | 9th Sep 1919 | Box 2 \ 6 B002_X 140 141 157-page082 | |
| Typed note expressing disapproval of large road wheels and their disadvantage to the chassis. | 9th Sep 1916 | Box 2 \ 6 B002_X 140 141 157-page083 | |
| Extract discussing the manifestation of bevel gear period noise at slow speeds on chassis 107-A. | 9th Sep 1916 | Box 2 \ 6 B002_X 140 141 157-page084 | |
| Instruction note regarding a delay on experimental gears for a right rear axle, awaiting an anchor wheel. | 20th Sep 1913 | Box 2 \ 6 B002_X 140 141 157-page085 | |
| A light rear axle and double rear brake component that has been finished and is awaiting testing. | 30th Oct 1913 | Box 2 \ 6 B002_X 140 141 157-page086 | |
| Strategies for reducing the weight of the rear axle and requesting a competitive analysis. | 10th Dec 1913 | Box 2 \ 6 B002_X 140 141 157-page087 | |
| Performance of a Peugeot light back axle and suggesting an experimental return to a previous axle design. | 13th Dec 1913 | Box 2 \ 6 B002_X 140 141 157-page088 | |
| Cancellation notice for an extract regarding a light axle with finer pitch gears. | 9th Mar 1914 | Box 2 \ 6 B002_X 140 141 157-page089 | |
| Cancellation notice for an experiment on a light axle with finer pitch gears. | 9th Mar 1914 | Box 2 \ 6 B002_X 140 141 157-page090 | |
| Instructions from Mr. Royce to arrange a trial for a car fitted with a 20-degree angle axle. | 24th Mar 1914 | Box 2 \ 6 B002_X 140 141 157-page091 | |
| To trial a car fitted with a Fe 20° Angle Axle, with subsequent handwritten responses. | 27th Mar 1914 | Box 2 \ 6 B002_X 140 141 157-page092 | |
| Clarifying a misunderstanding by Mr. Royce concerning a 20-degree angle axle and gears on Chassis 2300. | 28th Mar 1914 | Box 2 \ 6 B002_X 140 141 157-page093 | |
| Short memo from the Order Office regarding the inability to find production cards for an experiment. | 8th Apr 1914 | Box 2 \ 6 B002_X 140 141 157-page094 | |
| Reply regarding rear axles, referencing a previous memo and an attached drawing office report. | 8th Jul 1914 | Box 2 \ 6 B002_X 140 141 157-page095 | |
| Widespread oil leakage from rear axles, proposing an efficient breather as a solution. | 12th Feb 1927 | Box 2 \ 6 B002_X 140 141 157-page096 | |
| Instructions to Mr Wormald regarding an investigation and experiment into the cause of an oil leak. | 11th Jul 1914 | Box 2 \ 6 B002_X 140 141 157-page097 | |
| Oil leaks in a rear axle, quoting Mr. Royce's inquiry on the matter. | 4th Sep 1914 | Box 2 \ 6 B002_X 140 141 157-page098 | |
| Report discussing the performance of modified springs, a lightened back axle, and a longer torque tube. | 18th Aug 1916 | Box 2 \ 6 B002_X 140 141 157-page099 | |
| Extract proposing methods for weight reduction on a standard car's light axle. | 18th Aug 1916 | Box 2 \ 6 B002_X 140 141 157-page100 | |
| Extract discussing issues with bevel gear noise and smoothness in a back axle. | 9th Sep 1916 | Box 2 \ 6 B002_X 140 141 157-page101 | |
| Decision not to pursue the Andrade differential. | 7th May 1926 | Box 2 \ 6 B002_X 140 141 157-page102 | |
| German limited-movement differential device and its suitability for passenger cars versus military vehicles. | 23th Dec 1927 | Box 2 \ 6 B002_X 140 141 157-page103 | |
| Letter discussing the proposal and logistics for testing an improved 'Andrade' differential. | 16th Jan 1928 | Box 2 \ 6 B002_X 140 141 157-page104 | |
| Letter from a patent attorney to the Chief Engineer regarding a new differential design. | 12th Jan 1928 | Box 2 \ 6 B002_X 140 141 157-page105 | |
| Letter from patent attorney C. Andrade Jr. offering his patented differential design for use in cars. | 12th Jan 1928 | Box 2 \ 6 B002_X 140 141 157-page106 | |
| Assembly drawing of an Andrade Differential for a Ford vehicle. | 12th Jan 1928 | Box 2 \ 6 B002_X 140 141 157-page107 | |
| The functions and advantages of the Andrade Differential. | 27th Mar 1928 | Box 2 \ 6 B002_X 140 141 157-page108 | |
| Proposing a test of the S. de Lavaud Differential Gear, claimed to prevent 'tail wagging', following a recent accident. | 27th Mar 1928 | Box 2 \ 6 B002_X 140 141 157-page109 | |
| Offer for a Sensaud de Lavaud Differential to be fitted to a 20 HP car. | 4th Apr 1928 | Box 2 \ 6 B002_X 140 141 157-page110 | |
| The Sensaud de Lavaud differential and the supply of drawings for a 20 HP Rear Axle. | 1st Apr 1928 | Box 2 \ 6 B002_X 140 141 157-page111 | |
| Request for blueprints to construct a de Lavaud differential for a 20 HP rear axle. | 11th Apr 1928 | Box 2 \ 6 B002_X 140 141 157-page112 | |
| Blank separator page marked with the number 141. | 2nd Mar 1911 | Box 2 \ 6 B002_X 140 141 157-page113 | |
| Suitability of a worm drive versus a double bevel back axle. | 2nd Mar 1911 | Box 2 \ 6 B002_X 140 141 157-page114 | |
| Implementation of a worm drive, including gear ratios, speed, and road clearance. | 21th Apr 1911 | Box 2 \ 6 B002_X 140 141 157-page115 | |
| 13° bevel gear wheel and quiet worm drive for a potential trial car. | 21th Apr 1911 | Box 2 \ 6 B002_X 140 141 157-page116 | |
| Back axle gear ratios and the potential for two different vehicle models. | 21th Apr 1911 | Box 2 \ 6 B002_X 140 141 157-page117 | |
| Introduction of a second car model, considering chassis interchangeability and body types. | 21th Apr 1911 | Box 2 \ 6 B002_X 140 141 157-page118 | |
| Comparison between Bevel and Worm Gear back axles, noting issues with clearance and strength. | 3rd May 1911 | Box 2 \ 6 B002_X 140 141 157-page119 | |
| Design completion of a worm-driven back axle and associated chassis modifications. | 17th May 1911 | Box 2 \ 6 B002_X 140 141 157-page120 | |
| Design modification to be four or five inches higher, with an enclosed tracing. | 17th May 1911 | Box 2 \ 6 B002_X 140 141 157-page121 | |
| Instructions for sourcing and obtaining estimates for manufacturing worm geared back axle components. | 30th May 1911 | Box 2 \ 6 B002_X 140 141 157-page122 | |
| Lanchester people and the differences between a common worm and a Hindley worm. | 30th May 1911 | Box 2 \ 6 B002_X 140 141 157-page123 | |
| Departmental memo to Mr. Royce regarding the difficulty in sourcing a supplier for a Hindley Worm Gear. | 28th Jun 1911 | Box 2 \ 6 B002_X 140 141 157-page124 | |
| Unavailability of horizontal worm gears for an experimental car and proposing a committee meeting to decide the next steps. | 30th Jun 1911 | Box 2 \ 6 B002_X 140 141 157-page125 | |
| Meeting minutes discussing the design, implementation, and sourcing of worm and double bevel back axles. | 13th Nov 1911 | Box 2 \ 6 B002_X 140 141 157-page126 | |
| Meeting minutes concerning the testing of a worm axle. | 17th Nov 1911 | Box 2 \ 6 B002_X 140 141 157-page127 | |
| Meeting minutes discussing the testing and development of a worm axle. | 29th Nov 1911 | Box 2 \ 6 B002_X 140 141 157-page128 | |
| Committee meeting notes discussing worm axles, worm gears, and their efficiency. | 6th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page129 | |
| Meeting minutes discussing the testing and development of worm axles. | 11th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page130 | |
| Meeting minutes discussing the testing, wear, and comparative efficiency of a worm axle, with a proposal to copy Lanchester's design. | 13th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page131 | |
| Report comparing the performance data of a worm axle against a bevel axle. | 21th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page132 | |
| Meeting minutes discussing the performance, manufacturing, and fitting of a worm drive axle. | 21th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page133 | |
| Meeting minutes discussing the testing of worm gears, worm drives, and various axles. | 28th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page134 | |
| Committee's opinion on the significance of not finding other cars fitted with a worm axle. | 17th Jan 1912 | Box 2 \ 6 B002_X 140 141 157-page135 | |
| Meeting minutes discussing delays, road tests, and design aspects of a worm axle. | 17th Jan 1912 | Box 2 \ 6 B002_X 140 141 157-page136 | |
| Departmental memo discussing the feasibility of fitting a worm axle to an experimental chassis. | 8th Nov 1911 | Box 2 \ 6 B002_X 140 141 157-page137 | |
| Dynamometer and road test results comparing a worm axle and a bevel axle on a 182E chassis. | 24th Nov 1911 | Box 2 \ 6 B002_X 140 141 157-page138 | |
| Article from 'The Autocar' magazine discussing the principles and efficiency of worm gearing, with constructive criticism by an independent engineer. | 9th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page139 | |
| Page from 'The Autocar' magazine discussing the design, efficiency, and causes of failure of worm gears. | 9th Dec 1911 | Box 2 \ 6 B002_X 140 141 157-page140 | |
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