| Description | Date | Identifier | |
| Oil consumption on Bentley engines, specifically concerning an extra oil hole in the connecting rods. | 19th Oct 1937 | Box 159 \ 6 scan0090 | |
| Standardization of detachable wire wheels and the use of large Palmer tires. | 29th Mar 1911 | Box 159 \ 7 scan0001 | |
| Technical Committee's decision to reject a proposal from Rudge Whitworth for supplying wire wheels. | 1st Sep 1911 | Box 159 \ 7 scan0002 | |
| Mr. Royce's proposal to make wire wheels standard and manufacture the hubs in-house. | 19th Jun 1912 | Box 159 \ 7 scan0003 | |
| Departmental memo concerning an extract of a letter about wire wheels. | 27th Jun 1912 | Box 159 \ 7 scan0004 | |
| Copy of a letter extract from a customer regarding their experience with Rudge-Whitworth detachable wire wheels. | 15th Jun 1912 | Box 159 \ 7 scan0005 | |
| Performance of Rudge-Whitworth detachable wire wheels, noting issues with spokes and hub tightening. | 29th Jun 1912 | Box 159 \ 7 scan0006 | |
| Letter to Rudge-Whitworth Ltd. regarding the balancing issues of their wire wheels due to spoke arrangement and component placement. | 27th Aug 1912 | Box 159 \ 7 scan0007 | |
| Letter to Rudge-Whitworth Ltd. regarding the balancing of front wheels and the arrangement of security bolts. | 27th Aug 1912 | Box 159 \ 7 scan0008 | |
| Letter from Rudge-Whitworth Ltd. concerning the arrangement and balancing of security bolts and valves on tyres. | 28th Aug 1912 | Box 159 \ 7 scan0009 | |
| Letter of acknowledgement to Messrs Rudge-Whitworth Ltd. | 29th Aug 1912 | Box 159 \ 7 scan0010 | |
| Letter from Rudge-Whitworth Ltd. comparing the mechanical data of their 1912 and 1913 pattern wheels. | 6th Sep 1912 | Box 159 \ 7 scan0011 | |
| Continued letter to T. B. Barrington, Esq., from Rudge-Whitworth, Ltd, regarding a pattern. | 6th Aug 1912 | Box 159 \ 7 scan0012 | |
| Letter to Rudge-Whitworth Ltd. requesting a missing table of mechanical data for 1912 and 1913 pattern wheels. | 7th Sep 1912 | Box 159 \ 7 scan0013 | |
| Letter to Rudge-Whitworth Ltd acknowledging receipt of a table regarding R.W. detachable wheels. | 9th Sep 1912 | Box 159 \ 7 scan0014 | |
| Letter from Rudge-Whitworth Ltd. concerning the balancing of wheels, security bolts and valves. | 10th Sep 1912 | Box 159 \ 7 scan0015 | |
| Table of specifications for drive and cone seats on R.W. detachable wheels, separated by years 1912 and 1913. | 11th Sep 1912 | Box 159 \ 7 scan0016 | |
| Letter to Messrs Rudge-Whitworth Ltd. acknowledging their letter concerning the balance of wheels. | 11th Sep 1912 | Box 159 \ 7 scan0017 | |
| Letter discussing modifications to the front hubs and steering arrangement for R.W. wire wheels. | 8th Oct 1912 | Box 159 \ 7 scan0018 | |
| Page 2 of a memorandum by F.H. Royce detailing improvements to the central brake and change speed levers. | 4th Dec 1912 | Box 159 \ 7 scan0019 | |
| Special parts fitted to chassis 2100E, specifically discussing road wheels. | 4th Dec 1912 | Box 159 \ 7 scan0020 | |
| Specifications for wooden and wire wheels, and brake drums for chassis 2301. | 4th Dec 1912 | Box 159 \ 7 scan0021 | |
| Modifications to wheel hubs and collaboration with Dunlop for new standards. | 11th Apr 1913 | Box 159 \ 7 scan0022 | |
| Page detailing working instructions for Rudge-Whitworth people. | 11th Apr 1913 | Box 159 \ 7 scan0023 | |
| Comparing the weight of Dunlop wheels to Rudge-Whitworth wheels and discussing wheel creep on hubs. | 24th Nov 1913 | Box 159 \ 7 scan0024 | |
| Advantages of wire wheels over wood wheels, particularly for high-speed cars and use on the Continent. | 28th Nov 1913 | Box 159 \ 7 scan0025 | |
| Comparing R.W. Wheels with Dunlop wheels for use on heavy cars. | 28th Nov 1913 | Box 159 \ 7 scan0026 | |
| Experiences with different types of Rudge-Whitworth detachable wire wheels. | 4th Dec 1913 | Box 159 \ 7 scan0027 | |
| The performance of R.W. Wire Wheels following the Spanish Trials, with a comparison to Dunlop wheels. | 26th Nov 1913 | Box 159 \ 7 scan0028 | |
| Instructions regarding issues with Rudge Whitworth wheels becoming slack or rusted onto hubs. | 9th Dec 1913 | Box 159 \ 7 scan0029 | |
| Instructions on rectifying slackness in keyed wheels and noting the improved design of the 1913 spline-driven wheel. | 8th Sep 1913 | Box 159 \ 7 scan0030 | |
| Instructions on the correct procedure for tightening Dunlop wheels to prevent wear on the spline. | 8th Sep 1913 | Box 159 \ 7 scan0031 | |
| Internal instruction giving an opinion on the wearing capabilities of wheels. | 8th Sep 1913 | Box 159 \ 7 scan0032 | |
| Comparative testing of Rudge-Whitworth and Dunlop detachable wheels on a heavy closed body car. | 11th Dec 1913 | Box 159 \ 7 scan0033 | |
| Forwarding a request to fit Rudge-Whitworth wheels to a trial car for observation. | 9th Mar 1914 | Box 159 \ 7 scan0034 | |
| Letter discussing the comparative advantages and dimensional accuracy of Rudge-Whitworth versus Dunlop wheels. | 20th Apr 1914 | Box 159 \ 7 scan0035 | |
| Internal memorandum regarding the receipt and fitting of two sets of detachable wire wheels for experimental cars. | 6th May 1914 | Box 159 \ 7 scan0036 | |
| Departmental memo chasing a progress update on road testing Rudge Whitworth detachable wheels. | 18th Jun 1914 | Box 159 \ 7 scan0037 | |
| The fitting of wheels with brake drums and sourcing a suitable car for an experiment. | 26th May 1914 | Box 159 \ 7 scan0038 | |
| The delay in road testing Rudge Whitworth detachable wheels, with a handwritten reply. | 18th Jun 1914 | Box 159 \ 7 scan0039 | |
| Suggesting a trial for 'Plattford' on an instruction car. | 16th Jan 1914 | Box 159 \ 7 scan0040 | |
| Fitting of Rudge Whitworth detachable wheels to chassis 2300. | 19th Jun 1914 | Box 159 \ 7 scan0041 | |
| Extract regarding fitting Rudge-Whitworth detachable wheels to a new experimental car. | 12th Aug 1914 | Box 159 \ 7 scan0042 | |
| Instruction and query regarding the fitting of Rudge Whitworth wire wheels to an experimental chassis. | 18th Nov 1914 | Box 159 \ 7 scan0043 | |
| The fitting of Rudge Whitworth detachable wheels with a self-locking device to experimental car 49GB. | 20th Nov 1914 | Box 159 \ 7 scan0044 | |
| Rudge-Whitworth detachable wheels with an automatic locking device, including remarks from Mr. Royce. | 27th Jan 1915 | Box 159 \ 7 scan0045 | |
| List of experiments and modifications incorporated on chassis 49 GB. | 3rd Feb 1915 | Box 159 \ 7 scan0046 | |
| Fitting of experimental Rudge Whitworth wheels to an engine. | 2nd Sep 1915 | Box 159 \ 7 scan0047 | |
| Extract discussing the relative merits and issues of Dunlop, Rudge-Whitworth, and Michelin wheels for the 40/50 HP chassis. | 26th Nov 1918 | Box 159 \ 7 scan0048 | |
| Extract discussing the relative merits of Dunlop, Rudge-Whitworth, and Michelin wheels for the 45/50 HP chassis. | 29th Nov 1918 | Box 159 \ 7 scan0049 | |
| Order of preference for detachable wheels, comparing Michelin, Rudge-Whitworth and Dunlop designs. | 20th Dec 1918 | Box 159 \ 7 scan0050 | |
| The benefits of costly spokes and rims for improving wheel appearance and preventing rust damage to tyres. | 20th Dec 1918 | Box 159 \ 7 scan0051 | |
| Choice of wheels and design specifications for shock absorbers. | 18th Dec 1919 | Box 159 \ 7 scan0052 | |
| Temperature indicators, Dunlop and Rudge-Whitworth hubs, and petrol tank filler gauzes. | 2nd Dec 1919 | Box 159 \ 7 scan0053 | |
| Query regarding the type of demountable rims used with Rudge-Whitworth detachable wire wheels. | 22th Jul 1920 | Box 159 \ 7 scan0054 | |
| Quoting Rudge-Whitworth Ltd. on the security of detachable flanges on wire wheels used at the Indianapolis Speedway Race. | 24th Jul 1920 | Box 159 \ 7 scan0055 | |
| Letter from Rudge-Whitworth Ltd. detailing the results of the 1920 Indianapolis 500 race and the successful performance of their wheels. | 24th Jun 1920 | Box 159 \ 7 scan0056 | |
| Communication regarding the use of split pins on Rudge-Whitworth detachable wire wheels at the Indianapolis Speedway Race. | 24th Jul 1920 | Box 159 \ 7 scan0057 | |
| Letter from Rudge-Whitworth Ltd. concerning the tyres and rims used at the Indianapolis 500 Speedway Race. | 24th Jul 1920 | Box 159 \ 7 scan0058 | |
| Cover letter forwarding correspondence regarding Rudge-Whitworth Detachable Wire Wheels. | 16th Jul 1920 | Box 159 \ 7 scan0059 | |
| Letter detailing the results of the 1920 Indianapolis 500 race, highlighting that all cars were fitted with Rudge-Whitworth wheels. | 24th Jun 1920 | Box 159 \ 7 scan0060 | |
| Bilingual instruction card for Rudge-Whitworth detachable wire wheel lock nuts. | 1st May 1922 | Box 159 \ 7 scan0061 | |
| Bilingual instruction card for changing Rudge-Whitworth detachable wire wheels. | 1st May 1922 | Box 159 \ 7 scan0062 | |
| Comparing Rudge-Whitworth and Dunlop detachable wire wheels, concluding the Dunlop design is preferable. | 6th Feb 1922 | Box 159 \ 7 scan0063 | |
| Reports on Rudge-Whitworth and Dunlop wire wheels for Mr. Royce. | 20th Jun 1922 | Box 159 \ 7 scan0064 | |
| Letter discussing past issues and experiences with Rudge-Whitworth wire wheels. | 15th Jun 1922 | Box 159 \ 7 scan0065 | |
| Problems and risks associated with fitting Rudge-Whitworth wire wheels to the Goshawk model. | 9th Jun 1922 | Box 159 \ 7 scan0066 | |
| Rudge Whitworth wheels fitted to a 20 HP car, detailing issues with noise and rim flanges during testing. | 6th Oct 1922 | Box 159 \ 7 scan0067 | |
| Failure of Rudge Whitworth wheels due to the noise they produced. | 11th Oct 1922 | Box 159 \ 7 scan0068 | |
| Booklet from the Rudge Whitworth Company about their laboratory work. | 11th Oct 1922 | Box 159 \ 7 scan0069 | |
| Technical comparison between the Rudge Whitworth and Dunlop wire wheels, outlining why the latter is preferred. | 5th May 1923 | Box 159 \ 7 scan0070 | |
| The continued opposition from Mr. Royce and the Technical department to the R.W. type of wheel. | 16th May 1923 | Box 159 \ 7 scan0071 | |
| Quoting correspondence from Rudge Whitworth regarding the inspection of wheels fitted to a 20 HP car. | 16th May 1923 | Box 159 \ 7 scan0072 | |
| Seeking clarification on actions required for a set of Rudge Whitworth wheels. | 24th May 1923 | Box 159 \ 7 scan0073 | |
| Letter from Rudge-Whitworth Ltd. regarding 1/12th scale model wheels for the Queen's Dolls' House. | 27th Jun 1923 | Box 159 \ 7 scan0074 | |
| Modifications and issues with Rudge-Whitworth and Dunlop wheels. | 29th Aug 1923 | Box 159 \ 7 scan0075 | |
| Requesting an urgent report on the testing of new Rudge Whitworth wheels to achieve significant cost savings. | 26th Sep 1923 | Box 159 \ 7 scan0076 | |
| Delays from Rudge Whitworth Co. in providing final designs for wheels for the 20HP chassis. | 28th Sep 1923 | Box 159 \ 7 scan0077 | |
| Expediting the acquisition and testing of Rudge-Whitworth wheels. | 1st Oct 1923 | Box 159 \ 7 scan0078 | |
| Requesting the immediate testing of Rudge-Whitworth wheels on a 40/50 HP chassis. | 5th Nov 1923 | Box 159 \ 7 scan0079 | |
| Fitting, testing, and ordering of Rudge Whitworth wheels. | 6th Nov 1923 | Box 159 \ 7 scan0080 | |
| Experiments with Rudge-Whitworth wheels for the 20 HP and 40/50 HP models. | 29th Nov 1923 | Box 159 \ 7 scan0081 | |
| Difficulty of changing Rudge Whitworth wire wheels due to their tight fit on the hubs of a 20 HP car. | 29th Nov 1923 | Box 159 \ 7 scan0082 | |
| From ROY regarding arrangements for a 20 HP car with experimental wheels to be sent to the Rudge Whitworth Company in Coventry for alterations. | 30th Nov 1923 | Box 159 \ 7 scan0083 | |
| The performance and fitment issues of Rudge-Whitworth wheels on a 20 HP car. | 30th Nov 1923 | Box 159 \ 7 scan0084 | |
| Agreeing to the order of Rudge-Whitworth wheels for testing on the 20 HP model. | 3rd Dec 1923 | Box 159 \ 7 scan0085 | |
| Cover letter forwarding a communication from Rudge Whitworth Company regarding wheel examination and delivery arrangements. | 4th Dec 1923 | Box 159 \ 7 scan0086 | |
| Copy of a letter from Rudge Whitworth Ltd. concerning the fitment of wheels on a 20 HP car. | 3rd Dec 1923 | Box 159 \ 7 scan0087 | |
| Testing wheels and nuts on a 20 HP experimental car to resolve a slackness issue. | 3rd Dec 1923 | Box 159 \ 7 scan0088 | |
| Letter to Mr. John Pugh of Rudge Whitworth Ltd. concerning 10,000-mile road tests. | 4th Dec 1923 | Box 159 \ 7 scan0089 | |
| Letter from Rudge-Whitworth Limited to Mr. Hives comparing a 10,000-mile test of a motor bicycle against a 20 HP car. | 5th Dec 1923 | Box 159 \ 7 scan0090 | |
| Letter from Rudge-Whitworth, Ltd. to E. W. Hives comparing car mileage. | 5th Dec 1923 | Box 159 \ 7 scan0091 | |
| Letter to Rudge-Whitworth Ltd. reporting on a 5,000-mile endurance test of their wheels on a 20 HP car. | 2nd Jan 1923 | Box 159 \ 7 scan0092 | |
| Letter from Rudge-Whitworth Limited regarding an interim report on a 20 HP car test. | 3rd Jan 1924 | Box 159 \ 7 scan0093 | |
| Request for a report on the adoption of Rudge-Whitworth wheels for 40/50 and 20 HP models. | 10th Jan 1923 | Box 159 \ 7 scan0094 | |
| On the 6,000-mile test of R-W wheels, comparing their tightening requirements to Dunlop wheels. | 1st Jan 1924 | Box 159 \ 7 scan0095 | |
| Status and development of Rudge Whitworth wheels for 20 HP and 40/50 HP models. | 11th Jan 1924 | Box 159 \ 7 scan0096 | |
| From BJ to Hs regarding the next steps for inspecting Rudge-Whitworth wheels. | 14th Jan 1924 | Box 159 \ 7 scan0097 | |
| Ongoing 10,000-mile test of R.W. wheels and the ordering of Dunlop wheels. | 15th Jan 1924 | Box 159 \ 7 scan0098 | |
| Confirmation of an order placed with the Dunlop Company for 1000 sets of wheels for the 20 HP chassis. | 16th Jan 1924 | Box 159 \ 7 scan0099 | |
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