| Description | Date | Identifier | |
| The 10,000-mile test of R.W. wheels for 20 HP cars. | 1st Mar 1924 | Box 159 \ 7 scan0100 | |
| ROY discussing a reply to communication from Rudge Whitworth Wheels. | 4th Mar 1924 | Box 159 \ 7 scan0101 | |
| Letter from Rudge-Whitworth Ltd. inquiring about the mileage on new pattern wheels fitted to a 20 HP car. | 3rd Mar 1924 | Box 159 \ 7 scan0102 | |
| Letter regarding the performance of experimental wheels after 10,000 miles and arranging an inspection. | 5th Mar 1924 | Box 159 \ 7 scan0103 | |
| Letter from Rudge-Whitworth Limited enclosing a report on an inspection of a set of wheels for a 20 HP car. | 3rd Apr 1924 | Box 159 \ 7 scan0104 | |
| Inspection report on the wheels of a 20 HP car, detailing issues with nuts, spokes, rust, and wheel removal. | 3rd Apr 1924 | Box 159 \ 7 scan0105 | |
| Inspection report on the condition and fitting of the wheels and hubs. | 9th Apr 1924 | Box 159 \ 7 scan0106 | |
| Ordering and testing programme for Rudge-Whitworth and Dunlop wheels for 20 HP and 40/50 HP chassis. | 9th Apr 1924 | Box 159 \ 7 scan0107 | |
| Procurement strategy for Dunlop versus the cheaper Rudge-Whitworth wheels for 40/50 HP and 20 HP models. | 10th Apr 1924 | Box 159 \ 7 scan0108 | |
| Specification table for the number of spokes on Dunlop and Rudge Whitworth wheels for the 20 HP model. | 17th Apr 1924 | Box 159 \ 7 scan0109 | |
| The supply and pricing of wheels from Rudge-Whitworth, compared to Dunlop. | 24th Apr 1924 | Box 159 \ 7 scan0110 | |
| Query to the Rudge-Whitworth Company about wheels exhibited at the Olympia Show. | 25th Apr 1924 | Box 159 \ 7 scan0111 | |
| The inspection of wheels on a 20 HP Rolls vehicle, detailing issues with nuts, spokes, and removal. | 19th Mar 1924 | Box 159 \ 7 scan0112 | |
| Inspection report on the condition and adjustments of a vehicle's wheels and hubs. | 29th Apr 1924 | Box 159 \ 7 scan0113 | |
| Blueprints for special Rudge Whitworth wheels, with a note that Dunlop could also produce them. | 29th Apr 1924 | Box 159 \ 7 scan0114 | |
| The delivery schedule from the Rudge-Whitworth Company for 20 HP wheels. | 4th Apr 1924 | Box 159 \ 7 scan0115 | |
| Giving opinions on Rudge-Whitworth wire wheels and bevel pinions for the 20 HP series. | 3rd Jun 1924 | Box 159 \ 7 scan0116 | |
| Simplifying the Goshawk 11 valve spring changer tool. | 7th Jul 1924 | Box 159 \ 7 scan0117 | |
| Chasing progress on the testing and sampling of Rudge Whitworth wire wheels. | 4th Jul 1924 | Box 159 \ 7 scan0118 | |
| Confirming a sample of Rudge Whitworth wheels is being taken to WW. | 7th Jul 1924 | Box 159 \ 7 scan0119 | |
| Continuous experimental testing of R-W wheels fitted to a 20 HP car. | 8th Jul 1924 | Box 159 \ 7 scan0120 | |
| Requesting an update on a further test for Rudge-Whitworth Wheels. | 8th Jul 1924 | Box 159 \ 7 scan0121 | |
| Telegram enquiring if the Rudge Whitworth wheel fastening method is suitable for steel artillery wheels. | 17th Jul 1923 | Box 159 \ 7 scan0122 | |
| Confirmation of a wire regarding the Rudge Whitworth method of fastening steel artillery wheels. | 17th Jul 1924 | Box 159 \ 7 scan0123 | |
| Comparing Rudge Whitworth (R-W) wheels to Dunlop wheels following a 17,000-mile test on a 20 HP car. | 7th Jul 1924 | Box 159 \ 7 scan0124 | |
| Letter from Rudge-Whitworth Limited to Mr. Hives discussing an experimental report, a spanner design, and wheel quality. | 23th Jul 1924 | Box 159 \ 7 scan0125 | |
| Request for a further report on Rudge-Whitworth wheels currently under observation. | 19th Aug 1924 | Box 159 \ 7 scan0126 | |
| Request from The Rudge Whitworth Company for a progress report on sample 20 HP and 40/50 HP wheels. | 19th Nov 1924 | Box 159 \ 7 scan0127 | |
| Request from Rudge Whitworth for a report on wheel sets for the 20 HP and 40/50 HP chassis. | 10th Mar 1925 | Box 159 \ 7 scan0128 | |
| Test results for Rudge-Whitworth wheels and the effect of their competition on Dunlop prices. | 9th Sep 1925 | Box 159 \ 7 scan0129 | |
| Letter from Rudge-Whitworth Limited requesting a report on the performance of wheels supplied for various cars. | 31th Aug 1925 | Box 159 \ 7 scan0130 | |
| Letter from Rudge-Whitworth Ltd discussing a new design for a locknut and enclosing related blueprints. | 19th Sep 1925 | Box 159 \ 7 scan0131 | |
| Query regarding a list of comparative weights for front axle hub components for the New Phantom. | 19th Sep 1925 | Box 159 \ 7 scan0132 | |
| Shortening of road wheel hubs for steel artillery and wire wheels. | 13th Oct 1925 | Box 159 \ 7 scan0133 | |
| Expressing the opinion that Rudge Whitworth wheels are not of the required class. | 16th Mar 1926 | Box 159 \ 7 scan0134 | |
| Letter from Rudge Whitworth Limited asking for a report on the performance of wheels supplied for 20 HP and 40 HP cars. | 15th Mar 1926 | Box 159 \ 7 scan0135 | |
| Proposal for reducing the width of standard Phantom wire wheels by adapting artillery wheel hubs. | 1st Oct 1927 | Box 159 \ 7 scan0136 | |
| Order for two sets of 18' Rudge Whitworth wheels and hubs for the Bensport and Peregrine cars. | 17th Jan 1933 | Box 159 \ 7 scan0137 | |
| From 'Sg' to 'Hs' requesting Rudge Whitworth wheels be fitted to the next Peregrine model for France. | 18th Jan 1933 | Box 159 \ 7 scan0138 | |
| Fitting of Rudge-Whitworth wheels and hubs to the Peregrine car before its shipment to France. | 18th Jan 1933 | Box 159 \ 7 scan0139 | |
| Reminder to arrange a comparison between Rudge Whitworth and Dunlop road wheels. | 1st Mar 1933 | Box 159 \ 7 scan0140 | |
| The fitting and testing of Rudge Whitworth road wheels on two 25 HP cars. | 2nd Mar 1933 | Box 159 \ 7 scan0141 | |
| The urgent fitting of Rudge Whitworth wheels to 25 HP cars. | 2nd Mar 1933 | Box 159 \ 7 scan0142 | |
| Despatch and conversion of six Rudge-Whitworth wheels from 19x6 to 18x6. | 20th Apr 1933 | Box 159 \ 7 scan0143 | |
| The British and Continental car manufacturers using Rudge-Whitworth type wheels. | 23th May 1933 | Box 159 \ 7 scan0144 | |
| Supply, quality, and delays of wheels from the Rudge-Whitworth Company. | 15th Jun 1933 | Box 159 \ 7 scan0145 | |
| The procurement of 15 sets of Rudge-Whitworth Wheels for the Bentley chassis and the return of a loaned 'Driving Dog'. | 21th Jun 1933 | Box 159 \ 7 scan0146 | |
| Order of 15 sets of Rudge-Whitworth wheels for a Bentley car. | 26th Jun 1933 | Box 159 \ 7 scan0147 | |
| Confirming a phone conversation about borrowing a set of Rudge Whitworth wire wheels for testing the second Production Bentley Chassis. | 12th Jul 1933 | Box 159 \ 7 scan0148 | |
| Sample hammer from Rudge-Whitworth, its construction, and cost. | 2nd Sep 1933 | Box 159 \ 7 scan0149 | |
| Sample spanner for Bentley Wheels submitted by the Rudge-Whitworth Company. | 8th Sep 1933 | Box 159 \ 7 scan0150 | |
| Research laboratory report from Rudge-Whitworth Limited regarding the examination of a damaged 72 mm locknut and hub. | 4th Oct 1933 | Box 159 \ 7 scan0151 | |
| Page 2 of a letter from Rudge-Whitworth, Ltd. discussing potential causes and solutions for thread damage on a locknut. | 6th Oct 1933 | Box 159 \ 7 scan0152 | |
| Letter to Rudge Whitworth Limited regarding a damaged hub and nut, detailing issues with thread plating. | 6th Oct 1933 | Box 159 \ 7 scan0153 | |
| Issues with plating on Rudge Whitworth wheel nuts for Bentley vehicles. | 6th Oct 1933 | Box 159 \ 7 scan0154 | |
| Prohibitive cost of aluminium alloy wheel rims compared to the usual steel rims. | 30th Jul 1934 | Box 159 \ 7 scan0155 | |
| Confidential memo concerning Rudge-Whitworth's application for provisional protection for an improved locking device for wheels. | 15th Sep 1934 | Box 159 \ 7 scan0156 | |
| Letter to Rudge-Whitworth Ltd. requesting recommendations on hub modifications following issues at the Ulster Tourist Trophy Race. | 17th Nov 1934 | Box 159 \ 7 scan0157 | |
| Letter to Rudge-Whitworth Ltd. regarding the problem of wheel hubs tightening excessively, making them difficult to remove. | 21th Dec 1934 | Box 159 \ 7 scan0158 | |
| Letter from Rudge-Whitworth Ltd. concerning wheel and hub troubles on a Bentley car following the Ulster Race. | 27th Nov 1934 | Box 159 \ 7 scan0159 | |
| Letter to W.A. Robotham discussing suggestions for improving wheel fitting, locknuts, and hubs. | 27th Nov 1934 | Box 159 \ 7 scan0160 | |
| The concluding page of a typed letter addressed to W. A. Robotham. | 27th Nov 1934 | Box 159 \ 7 scan0161 | |
| Letter to Rudge-Whitworth Ltd. regarding modifications to a hub, bronze inserts, and securing nuts. | 14th Jan 1935 | Box 159 \ 7 scan0162 | |
| Supply of Aluminium Alloy rims for Bentley wheels. | 21th Jan 1935 | Box 159 \ 7 scan0163 | |
| Copy of a letter from Rudge-Whitworth Ltd. regarding the pricing of aluminium alloy wheels and advice on new locknuts. | 16th Jan 1935 | Box 159 \ 7 scan0164 | |
| Proposing a 'bump' test for a set of aluminium alloy wheels. | 22th Jan 1935 | Box 159 \ 7 scan0165 | |
| Letter to Rudge-Whitworth Ltd. seeking their opinion on a proposal to lighten the wheel hubs of a Bentley chassis. | 29th Jan 1935 | Box 159 \ 7 scan0166 | |
| Letter from Rudge-Whitworth Ltd. discussing weight savings on splines for a Bentley and requesting chassis weight information. | 2nd Feb 1935 | Box 159 \ 7 scan0167 | |
| Letter from Rudge-Whitworth Ltd discussing issues with hub locknuts and a proposed solution involving a bronze insert. | 11th Jan 1935 | Box 159 \ 7 scan0168 | |
| Letter from Rudge Whitworth Ltd. discussing alterations to a hub and locknut for racing purposes. | 11th Jan 1935 | Box 159 \ 7 scan0169 | |
| Despatch of one Bentley Wheel Cap to The Rudge-Whitworth Co. Ltd. | 13th Feb 1935 | Box 159 \ 7 scan0170 | |
| Order be placed with Rudge-Whitworth Co. Ltd. for a special hub cap. | 13th Feb 1935 | Box 159 \ 7 scan0171 | |
| Letter to Rudge-Whitworth Ltd. concerning modifications and a request for a new hub nut. | 13th Feb 1935 | Box 159 \ 7 scan0172 | |
| Testing of Wheel Lock Nuts with loose brass inserts from Rudge-Whitworth Company. | 27th Feb 1935 | Box 159 \ 7 scan0173 | |
| Increased weight of a sample Bentley hub cap with brass inserts designed to prevent galling. | 1st Mar 1935 | Box 159 \ 7 scan0174 | |
| Letter to Rudge Whitworth Ltd. concerning the increased weight of newly received hub caps. | 2nd Mar 1935 | Box 159 \ 7 scan0175 | |
| Letter from Rudge-Whitworth Ltd to W. A. Robotham regarding the weight of insert locknuts and a suggestion to use light alloy rims. | 5th Mar 1935 | Box 159 \ 7 scan0176 | |
| Cost and development of experimental Bentley wheels with aluminium alloy rims. | 20th Mar 1935 | Box 159 \ 7 scan0177 | |
| Letter to Messrs. Rudge Whitworth Ltd. regarding the potential manufacture of complete light alloy wheels. | 21th Mar 1935 | Box 159 \ 7 scan0178 | |
| Letter from Rudge-Whitworth Ltd. discussing the practical difficulties of manufacturing all-aluminium wheels. | 22th Mar 1935 | Box 159 \ 7 scan0179 | |
| The spacing of wheel balance weights in discussion with Rudge-Whitworth Ltd. | 18th Apr 1935 | Box 159 \ 7 scan0180 | |
| Request to send an official order to Messrs. Rudge-Whitworth for one set of Wheel Lock Nuts. | 21th Jun 1935 | Box 159 \ 7 scan0181 | |
| Letter to Rudge-Whitworth Ltd. regarding a drawing for a modified wheel lock nut and an urgent request for its manufacture. | 21th Jun 1935 | Box 159 \ 7 scan0182 | |
| Letter from Dunlop Rubber Co. Ltd. regarding costings for a Bentley Hub Extractor. | 5th Oct 1935 | Box 159 \ 7 scan0183 | |
| Letter to Hardy Spicer & Co. Ltd. concerning tightening problems with a Rudge Whitworth wheel. | 18th Feb 1938 | Box 159 \ 7 scan0184 | |
| Letter from Hardy Spicer & Co. regarding the design specifics of a component's inner cone and lock nut angle. | 24th Feb 1938 | Box 159 \ 7 scan0185 | |
| Letter to Hardy Spicer & Co. Ltd. regarding a problem with Rudge Whitworth wheels. | 25th Feb 1938 | Box 159 \ 7 scan0186 | |
| Requesting feedback on Rudge Whitworth wheels due to issues with clunks during manoeuvring. | 25th Feb 1938 | Box 159 \ 7 scan0187 | |
| Customer complaints of 'clonks' on 6½ & 8-litre Bentley wheels and the technical specifications of the hubs used. | 1st Mar 1938 | Box 159 \ 7 scan0188 | |
| Analysis of historical wheel and hub assembly issues, comparing different component designs. | 1st Mar 1938 | Box 159 \ 7 scan0189 | |
| Wheel and hub greasing intervals and a proposal for a modified hub and lock ring design. | 1st Mar 1938 | Box 159 \ 7 scan0190 | |
| Blueprint showing the cross-sectional details of various Bentley hub caps. | 1st Mar 1938 | Box 159 \ 7 scan0191 | |
| Blueprint for a 'Bentley' branded knock-on wheel nut. | 1st Aug 1934 | Box 159 \ 7 scan0192 | |
| Letter from Hardy Spicer & Co. arranging a visit with Mr. Grylls and providing directions. | 28th Feb 1938 | Box 159 \ 7 scan0193 | |
| Letter to Dunlop Rim & Wheel Co. Ltd. regarding an order for a pair of Rudge Whitworth wheels with a modified cone angle. | 3rd Mar 1938 | Box 159 \ 7 scan0194 | |
| Letter to Dunlop Rubber Co. Ltd. forwarding a copy of a letter written to Mr. Sharp regarding Rudge Whitworth wheels. | 3rd Mar 1938 | Box 159 \ 7 scan0195 | |
| Visit to Hardy Spicer to discuss Rudge Whitworth wheel issues, potential modifications, and propellor shafts. | 4th Mar 1938 | Box 159 \ 7 scan0196 | |
| Pressure, speed, and torsion testing for welded tubes and shafts, and a discussion on needle joint clearances. | 4th Mar 1938 | Box 159 \ 7 scan0197 | |
| Letter to Hardy Spicer & Co. Ltd. regarding information on Rudge Whitworth wheels. | 4th Mar 1938 | Box 159 \ 7 scan0198 | |
| The investigation of front wheel movement on a Packard to determine the desired movement for the B.III bumper chassis. | 9th Mar 1938 | Box 159 \ 7 scan0199 | |
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