| Description | Date | Identifier | |
| Letter from Rapson Tyre & Jack Coy. Ltd. regarding a steering wobble issue on a car belonging to the Prince of Wales. | 18th Dec 1924 | Box 28 \ 4 Scan219 | |
| Letter discussing tyre performance, racing records, and refuting claims of steering wobble at high speeds. | 18th Dec 1924 | Box 28 \ 4 Scan220 | |
| Letter from the Rapson Tyre Company regarding tyre balance issues causing steering wobble on new car models with four-wheel brakes. | 18th Dec 1924 | Box 28 \ 4 Scan221 | |
| Editorial extract from 'The Autocar' on curing steering wobble by fitting Rapson oversize tyres. | 5th Dec 1924 | Box 28 \ 4 Scan222 | |
| Letter from Rapson Tyre & Jack Co. Ltd. detailing a successful high-speed tyre test on the Prince of Wales' car, comparing Rapson and Dunlop tyres. | 23th Dec 1924 | Box 28 \ 4 Scan223 | |
| Letter from Rapson Tyre & Jack Coy. Ltd. regarding steering-wobble issues due to tyre pressure differences. | 27th Dec 1924 | Box 28 \ 4 Scan224 | |
| Letter from Rapson Tyre & Jack Company discussing steering wobble issues and proposing tyre modifications. | 27th Dec 1924 | Box 28 \ 4 Scan225 | |
| Letter to The Rapson Tyre & Jack Coy. Ltd. regarding a tyre issue on H.R.H. The Prince of Wales' car. | 31th Dec 1924 | Box 28 \ 4 Scan226 | |
| High-speed steering wobble issues caused by out-of-balance Rapson tyres compared to Dunlop tyres. | 9th Jan 1925 | Box 28 \ 4 Scan227 | |
| Wheel wobble issues experienced in the Prince of Wales' car, particularly in relation to balloon tyres. | 23th Sep 1924 | Box 28 \ 4 Scan228 | |
| High-speed steering wobbles, referencing the Prince of Wales' car and a comparison of Rapson and Dunlop tires. | 21th Jan 1925 | Box 28 \ 4 Scan229 | |
| Disputing mileage figures for Rapson tyres compared to Dunlop tyres on the 40/50 HP model, particularly regarding steering wobbles. | 2nd Feb 1925 | Box 28 \ 4 Scan230 | |
| Copy of a letter to Messrs. Rapson regarding a tyre test report in France. | 16th Jun 1924 | Box 28 \ 4 Scan231 | |
| Performance report on Four Rapson Super Comfort SS. Cord Tyres. | 17th Jul 1924 | Box 28 \ 4 Scan232 | |
| Performance report on Rapson tyres fitted to car 98-NK, comparing noise, riding qualities and pressure loss. | 21th Aug 1924 | Box 28 \ 4 Scan233 | |
| Letter to Messrs. Rapson regarding a delay in tyre reports and mileage information. | 21th Aug 1924 | Box 28 \ 4 Scan234 | |
| High-speed steering wobble issues when using low-pressure tyres. | 20th Apr 1925 | Box 28 \ 4 Scan235 | |
| Page discussing the delayed testing of a scheme to solve steering wobble problems on 'V' series steering. | 16th May 1925 | Box 28 \ 4 Scan236 | |
| The steering performance of a borrowed 20 HP Sunbeam car. | 16th May 1925 | Box 28 \ 4 Scan237 | |
| High speed steering wobbles on the 40/50HP Chassis. | 22th May 1925 | Box 28 \ 4 Scan238 | |
| High-speed steering wobble issues on the 40/50HP chassis. | 20th May 1925 | Box 28 \ 4 Scan239 | |
| Technical memorandum discussing the causes and remedies for high-speed steering wobbles on the 40/50 HP model. | 22th May 1925 | Box 28 \ 4 Scan240 | |
| High speed steering wobbles for the 40/50 model, detailing potential causes and remedies. | 22th May 1925 | Box 28 \ 4 Scan241 | |
| Wor. to Hs. forwarding a memo from Cricklewood and requesting views on a suggestion. | 26th May 1925 | Box 28 \ 4 Scan242 | |
| Steering wobble issue on a 40/50 model and its resolution by adjusting the front wheel track. | 25th May 1925 | Box 28 \ 4 Scan243 | |
| Wheel setting adjustments for 40/50 HP steering and the effects on tyre wear. | 27th May 1925 | Box 28 \ 4 Scan244 | |
| Steering wobble issues and a patented damped pendulum lever as a potential solution. | 20th Jun 1925 | Box 28 \ 4 Scan245 | |
| The causes of and remedies for high-speed steering wobbles. | 22th Jun 1925 | Box 28 \ 4 Scan246 | |
| Letter to Dunlop Rubber Co. concerning high-speed bounce and wobble in tyres due to imbalance issues. | 30th Jun 1925 | Box 28 \ 4 Scan247 | |
| Complaints of a serious and dangerous wheel wobble on new designs, analysing its out-of-balance causes. | 30th Jun 1925 | Box 28 \ 4 Scan248 | |
| Responding to questions about steering gear, specifically addressing the phenomenon of 'steering wobbles'. | 15th Jul 1925 | Box 28 \ 4 Scan249 | |
| Continued document discussing out-of-balance Dunlop tyres causing wobbles. | 30th Jun 1925 | Box 28 \ 4 Scan250 | |
| Letter to the Dunlop Rubber Co. Ltd. concerning high-speed bounce and wobble issues in balloon tyres due to imbalance. | 30th Jun 1925 | Box 28 \ 4 Scan251 | |
| Letter discussing a dangerous wheel wobble issue and the analysis of out-of-balance effects. | 13th Jul 1925 | Box 28 \ 4 Scan252 | |
| Cause of high-speed steering wobbles, attributing them to unbalanced road wheels. | 13th Jul 1925 | Box 28 \ 4 Scan253 | |
| Technical bulletin about the causes and solutions for high-speed steering wobbles. | 22th Jun 1925 | Box 28 \ 4 Scan254 | |
| Investigating and damping low and high-speed steering wobbles, comparing performance with a Hispano car. | 7th Jul 1925 | Box 28 \ 4 Scan255 | |
| Steering oscillation, the damped pendulum lever, and the effect of buffer springs. | 17th Jul 1925 | Box 28 \ 4 Scan256 | |
| Ongoing problem and experiments related to steering wobbles. | 11th Aug 1925 | Box 28 \ 4 Scan257 | |
| Instruction to correct a high-speed wobble fault by potentially introducing a damped steering lever. | 11th Aug 1925 | Box 28 \ 4 Scan258 | |
| High-speed steering wobbles, potential causes like tyre imbalance, and comparisons between the New Phantom and Silver Ghost models. | 1st Aug 1925 | Box 28 \ 4 Scan259 | |
| Testing two 20 HP cars, one with balloon tyres and one without, detailing adjustments to damping to improve riding. | 18th Aug 1925 | Box 28 \ 4 Scan260 | |
| 'V' series steering tests regarding driving springs, damping friction, and low-speed wobbles. | 18th Aug 1925 | Box 28 \ 4 Scan261 | |
| Investigations into high-speed steering wobbles. | 12th Aug 1925 | Box 28 \ 4 Scan262 | |
| High-speed steering wobble and its relation to tyre pressure and steering tube springs. | 12th Aug 1925 | Box 28 \ 4 Scan263 | |
| Investigations into high-speed steering wobbles. | 1st Aug 1925 | Box 28 \ 4 Scan264 | |
| High-speed steering wobble, its relation to tyre pressure and the effect of side steering tube springs. | 12th Jun 1925 | Box 28 \ 4 Scan265 | |
| Arranging the examination of a demonstration car at West Wittering to investigate a steering wobble. | 12th Aug 1925 | Box 28 \ 4 Scan266 | |
| Causes and proposed solutions for high-speed steering wobble, believed to be an epidemic caused by lower pressure tyres. | 13th Aug 1925 | Box 28 \ 4 Scan267 | |
| Investigation into high-speed steering wobbles, asking for specific measurements and proposing a testing method. | 14th Aug 1925 | Box 28 \ 4 Scan268 | |
| Solutions for steering wobbles, including tyre balancing, tyre pressure, and steering ratio adjustments. | 14th Aug 1925 | Box 28 \ 4 Scan269 | |
| Steering wobble issues, proposed testing, and potential solutions for Phantom cars. | 14th Aug 1925 | Box 28 \ 4 Scan270 | |
| Postscript memorandum outlining the delivery schedule and position for Phantom models. | 14th Aug 1925 | Box 28 \ 4 Scan271 | |
| Issue of 'wobbles' on fast cars and its prevalence among other manufacturers. | 15th Aug 1925 | Box 28 \ 4 Scan272 | |
| Cover note for a list of experiments requested by Mr. Royce regarding steering wobbles. | 15th Aug 1925 | Box 28 \ 4 Scan273 | |
| From Mr. Royce proposing experiments to investigate high-speed steering wobbles. | 15th Aug 1925 | Box 28 \ 4 Scan274 | |
| Experiment to stiffen the vehicle frame horizontally with gussets and stay plates, comparing Phantom and Silver Ghost models. | 15th Aug 1925 | Box 28 \ 4 Scan275 | |
| Questions and diagrams regarding steering dynamics, wheel wobble, tyre pressures, and wheel weights for 40/50 or Phantom models. | 1st Aug 1925 | Box 28 \ 4 Scan276 | |
| Insurance and liability risks for high-speed road tests concerning steering wobbles. | 1st Aug 1925 | Box 28 \ 4 Scan277 | |
| High speed steering wobble experiments and the relationship to tyre pressure. | 17th Aug 1925 | Box 28 \ 4 Scan278 | |
| High-speed steering wobbles and related component tests. | 17th Aug 1925 | Box 28 \ 4 Scan279 | |
| High-speed steering wobbles in 'V' series cars. | 17th Aug 1925 | Box 28 \ 4 Scan280 | |
| High-speed wobbles, testing the effects of tyre pressure, wheel gather, and steering tube springs. | 12th Jun 1925 | Box 28 \ 4 Scan281 | |
| High-speed wobbles, testing the effects of different springs, axle inertia, and front-end weight. | 1st Aug 1925 | Box 28 \ 4 Scan282 | |
| Cover letter for a file containing investigations into steering wobbles. | 17th Aug 1925 | Box 28 \ 4 Scan283 | |
| High-speed steering wobbles on a Phantom car due to varying tyre pressures. | 17th Aug 1925 | Box 28 \ 4 Scan284 | |
| Table of test results logging vehicle stability and control at various tyre pressures. | 17th Aug 1925 | Box 28 \ 4 Scan285 | |
| Correcting a typographical error in a previous document regarding steering wobbles. | 17th Aug 1925 | Box 28 \ 4 Scan286 | |
| Causes and potential solutions for high and low-speed steering wobbles and road shocks. | 7th Aug 1925 | Box 28 \ 4 Scan287 | |
| Discussion and series of questions regarding steering dampers, friction surfaces, and the effects of lubrication and load on vehicle handling. | 7th Aug 1925 | Box 28 \ 4 Scan288 | |
| The amount of mechanical friction needed to prevent high-speed wobbles and the resulting driver fatigue. | 18th Aug 1925 | Box 28 \ 4 Scan289 | |
| Query regarding steering wobbles on cars fitted with front-wheel brakes tested in France. | 18th Aug 1925 | Box 28 \ 4 Scan290 | |
| Modifications to address high speed steering wobbles on cars 98-NK and 5-EX. | 1st Aug 1925 | Box 28 \ 4 Scan291 | |
| Trying a horizontally mounted hydraulic shock absorber to fix high-speed steering wobbles. | 8th Aug 1925 | Box 28 \ 4 Scan292 | |
| Ongoing tests and potential modifications for various steering system components. | 18th Aug 1925 | Box 28 \ 4 Scan293 | |
| Technical memorandum discussing modifications to the cross steering arm and investigating the causes of high-speed steering wobble. | 18th Aug 1925 | Box 28 \ 4 Scan294 | |
| Solutions for high-speed wobbles by adjusting weight distribution, tyre balance, and damper design. | 18th Aug 1925 | Box 28 \ 4 Scan295 | |
| New Phantom handling issues compared to the Silver Ghost, focusing on weight, chassis flexibility, steering, and tyre balance. | 18th Aug 1925 | Box 28 \ 4 Scan296 | |
| Preliminary investigation into high-speed steering wobbles. | 18th Aug 1925 | Box 28 \ 4 Scan297 | |
| Investigating high-speed steering wobbles on Phantom and Silver Ghost chassis. | 12th Aug 1925 | Box 28 \ 4 Scan298 | |
| The protocol for road tests on high-speed steering wobbles. | 18th Aug 1925 | Box 28 \ 4 Scan299 | |
| Wheel balancing on Phantom models, advising against temporary balance weights due to potential for serious out-of-balance issues. | 19th Aug 1925 | Box 28 \ 4 Scan300 | |
| Potential improvements to reduce steering wobble, including dampers, spring levers, and worm gears. | 19th Aug 1925 | Box 28 \ 4 Scan301 | |
| Measuring high-speed steering wobbles on a Phantom car. | 19th Aug 1925 | Box 28 \ 4 Scan302 | |
| High-speed steering wobbles, detailing the measurement of their amplitude and phases. | 19th Aug 1925 | Box 28 \ 4 Scan303 | |
| Steering wobble issues on Phantom and Silver Ghost models, attributing the problem to low-pressure and out-of-balance tyres. | 20th Aug 1925 | Box 28 \ 4 Scan304 | |
| High-speed steering wobbles caused by low-pressure tyres on 40/50 HP cars. | 20th Apr 1925 | Box 28 \ 4 Scan305 | |
| Page two of an experimental report regarding a delayed test on a scheme to solve steering wobble problems. | 20th Apr 1925 | Box 28 \ 4 Scan306 | |
| Prevention of high-speed steering wobbles by balancing wheels and maintaining correct tyre pressure. | 20th Aug 1925 | Box 28 \ 4 Scan307 | |
| Investigations into high-speed steering wobbles. | 20th Aug 1925 | Box 28 \ 4 Scan308 | |
| Wire confirmation regarding the effectiveness of front shock dampers in reducing axle vibrations. | 21th Aug 1925 | Box 28 \ 4 Scan309 | |
| Causes of and solutions for front-end wobble, identified as an 'epidemic' linked to out-of-balance tyres. | 1st Aug 1925 | Box 28 \ 4 Scan310 | |
| Continued memo on the investigation into the causes and remedies of steering wobble, termed 'pit-pat', in the Phantom model. | 21th Aug 1925 | Box 28 \ 4 Scan311 | |
| Letter from F.H. Royce discussing the causes and solutions for high-speed steering wobbles, known as 'sobbles'. | 21th Aug 1925 | Box 28 \ 4 Scan312 | |
| Tests for high-speed steering wobbles on Phantom and Silver Ghost cars. | 21th Aug 1925 | Box 28 \ 4 Scan313 | |
| Steering friction and tests investigating wheel wobble using front shock absorbers and balanced wheels on a 'Phantom' model. | 21th Aug 1925 | Box 28 \ 4 Scan314 | |
| The nature and causes of wheel wobble, including observations of tire marks on the road. | 21th Aug 1925 | Box 28 \ 4 Scan315 | |
| Analyzing the causes and characteristics of 'criss-cross' axle vibration or wobble. | 21th Aug 1925 | Box 28 \ 4 Scan316 | |
| Measuring and damping wheel wobbles and vibrations on Phantom and Silver Ghost models. | 1st Aug 1925 | Box 28 \ 4 Scan317 | |
| Telegram concerning the effectiveness of front shock dampers and axle vibration tests. | 21th Aug 1925 | Box 28 \ 4 Scan318 | |
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