| Description | Date | Identifier | |
| Recommending the adoption of low-pressure tyres to keep pace with competitors like Bentley, Daimler and Panhard. | 31th Aug 1926 | Box 29 \ 1 Scan239 | |
| Preliminary steering tests for the 12-EX car, focusing on damper settings and wobble reduction. | 1st Sep 1926 | Box 29 \ 1 Scan240 | |
| Tyre performance, steering wobble, and the effect of tyre pressure on selectiveness. | 1st Sep 1926 | Box 29 \ 1 Scan241 | |
| Technical report discussing vehicle suspension issues, including insufficient damping and damper design. | 2nd Sep 1926 | Box 29 \ 1 Scan242 | |
| Safety implications and reputational risk of wheel wobble caused by larger, lower-pressure tyres at high speeds. | 2nd Sep 1926 | Box 29 \ 1 Scan243 | |
| Testing of larger section low-pressure tyres on a standard chassis. | 2nd Sep 1926 | Box 29 \ 1 Scan244 | |
| That tests for front wheel wobble should be conducted using well-worn tyres. | 1st Sep 1926 | Box 29 \ 1 Scan245 | |
| Performance of 6.75 inch Dunlop balloon tyres compared to 6.00 inch tyres, detailing test results and handling characteristics. | 9th Sep 1926 | Box 29 \ 1 Scan246 | |
| Expressing disappointment over repetitive testing being conducted on the same cars on Continental roads. | 10th Sep 1926 | Box 29 \ 1 Scan247 | |
| Results of testing three different tyre sizes to understand their effect on high-speed wobble. | 10th Sep 1926 | Box 29 \ 1 Scan248 | |
| Visit to Dunlop in Birmingham to discuss tyre development, including modifications to triple stud and balloon tyres. | 14th Sep 1926 | Box 29 \ 1 Scan249 | |
| Discussion with Dunlop regarding the performance of triple stud and traction tread tyres, focusing on wear, wobbling, and safety. | 15th Sep 1926 | Box 29 \ 1 Scan250 | |
| Letter to Dunlop Rubber Co. Ltd. regarding high-speed wobbles and 'shimmy' issues with various tyre treads on the 40/50 HP chassis. | 15th Sep 1926 | Box 29 \ 1 Scan251 | |
| Letter to Dunlop Rubber Company regarding tyre tread design and its effect on high-speed wobble for the 40/50 HP chassis. | 16th Sep 1926 | Box 29 \ 1 Scan252 | |
| Letter to the Dunlop Rubber Co. regarding testing of tyre treads and issues with 'shimmy' and high-speed wobbles. | 17th Sep 1926 | Box 29 \ 1 Scan253 | |
| Steering stability issues related to friction in pivots following tests on the 20 HP and New Phantom axles. | 20th Sep 1926 | Box 29 \ 1 Scan254 | |
| Tests conducted on a new axle pivot arrangement and its effect on steering performance and friction. | 17th Apr 1925 | Box 29 \ 1 Scan255 | |
| Potential solutions for steering wobble issues, including a patentable idea for a self-righting spring on the worm shaft. | 10th Jun 1926 | Box 29 \ 1 Scan256 | |
| Use of hydraulic dampers to improve steering performance and prevent wobbles. | 11th Oct 1926 | Box 29 \ 1 Scan257 | |
| Accident report from high-speed wobble testing where the steering lever broke at 70 mph. | 12th Nov 1926 | Box 29 \ 1 Scan258 | |
| Provisional patent for a design related to steering wobbles. | 12th Oct 1926 | Box 29 \ 1 Scan259 | |
| Recommending immediate production of a reinforced Phantom pendulum lever due to breakage. | 11th Jun 1926 | Box 29 \ 1 Scan260 | |
| Steering tests for vehicle 12-EX, investigating a wobble issue at various tyre pressures. | 15th Nov 1926 | Box 29 \ 1 Scan261 | |
| Suspension issues like 'tossing', 'jouncing', and 'tramping' on 4-wheel brake cars, and offering potential solutions. | 16th Nov 1926 | Box 29 \ 1 Scan262 | |
| Low-speed wobble issues on 20 HP cars due to a lack of damping on steering pivots, and the costs to rectify. | 18th Nov 1926 | Box 29 \ 1 Scan263 | |
| Tyre size, pressure and damper recommendations for Chassis 29-EE. | 20th Nov 1926 | Box 29 \ 1 Scan264 | |
| Wheel balancing tests for 33 x 6.75 inch tyres, focusing on inner tube joint placement. | 26th Nov 1926 | Box 29 \ 1 Scan265 | |
| The issues with wheel balancing caused by the position of the joint in the inner tube relative to the valve. | 26th Nov 1926 | Box 29 \ 1 Scan266 | |
| Listing the moment of inertia for various wheel and tyre combinations related to high-speed wobbles. | 26th Nov 1926 | Box 29 \ 1 Scan267 | |
| Strategy for rectifying low-speed wobble issues on 20 HP chassis already delivered to customers. | 18th Dec 1926 | Box 29 \ 1 Scan268 | |
| Seriousness of low-speed wobbles and the decision on whether to alter 570 cars already delivered. | 1st Dec 1926 | Box 29 \ 1 Scan269 | |
| Low-speed wobble issues on the 20 HP chassis and the importance of fixing the fault. | 3rd Dec 1926 | Box 29 \ 1 Scan270 | |
| Use of friction in 20 HP steering connections to prevent wobbles. | 3rd Dec 1926 | Box 29 \ 1 Scan271 | |
| Cover memo for a modified document concerning high-speed wobbles. | 14th Jan 1927 | Box 29 \ 1 Scan272 | |
| Technical memorandum discussing the causes of high-speed wobbles, referencing Mr. Healey's paper on gyroscopic effects. | 16th Sep 1925 | Box 29 \ 1 Scan273 | |
| Technical analysis of diagonal or criss-cross oscillation caused by tyre errors and leaf spring systems. | 16th Sep 1925 | Box 29 \ 1 Scan274 | |
| The effect of diagonal oscillation on axle pivots and steering stability. | 16th Sep 1925 | Box 29 \ 1 Scan275 | |
| Analysis of wheel oscillation and the effects of lateral pivot pin inclination on vehicle dynamics. | 16th Sep 1925 | Box 29 \ 1 Scan276 | |
| The causes of wheel wobble, tramping, and oscillation in a front axle unit. | 15th Sep 1925 | Box 29 \ 1 Scan277 | |
| Tests on heavy section inner tubes and inertia dampers to solve high-speed wobbles. | 31th Jan 1927 | Box 29 \ 1 Scan278 | |
| Suggestions and experimental trials for improving a vehicle's steering system. | 10th Feb 1927 | Box 29 \ 1 Scan279 | |
| Concerns and tests regarding high-speed steering wobble on the EAC-V11 model. | 16th Feb 1927 | Box 29 \ 1 Scan280 | |
| Comparison table of linear movement and tube inclination specifications for different chassis models. | 4th Mar 1927 | Box 29 \ 1 Scan281 | |
| Tests conducted on balloon tyres and their effect on high-speed wobbles and vehicle performance. | 4th Mar 1927 | Box 29 \ 1 Scan282 | |
| Technical memo discussing steering geometry and the effects of a damped pendulum lever on high and low speed wobbles. | 14th Mar 1927 | Box 29 \ 1 Scan283 | |
| Potential improvements to steering, including reducing wobbles with spring-loaded friction and experimenting with self-centring mechanisms. | 18th Apr 1940 | Box 29 \ 1 Scan284 | |
| Improving steering systems by incorporating friction and spring centering to reduce road shocks and wobbles. | 18th Apr 1940 | Box 29 \ 1 Scan285 | |
| Potential improvements to steering systems, including spring geometry, damping, and a spring return scheme. | 3rd Mar 1927 | Box 29 \ 1 Scan286 | |
| Fitting of friction dampers on 20 HP cars with balloon tyres to prevent low speed wobbles. | 22th Mar 1927 | Box 29 \ 1 Scan287 | |
| Modifications to the steering worm, nut, and spring return system. | 16th Apr 1927 | Box 29 \ 1 Scan288 | |
| Self-centering steering mechanisms and design considerations for a 20 HP model. | 27th Apr 1927 | Box 29 \ 1 Scan289 | |
| Front axles, discussing high-speed wobble and steering geometry on the 20 HP model. | 27th Apr 1927 | Box 29 \ 1 Scan290 | |
| Inquiring if reducing front axle weight has improved high-speed wobbles. | 30th Apr 1927 | Box 29 \ 1 Scan291 | |
| Query on a calculation for the gyroscopic couple on a front axle during high-speed wheel wobble. | 2nd Nov 1931 | Box 29 \ 1 Scan292 | |
| Low compression engine test conducted in a hangar. | 22th Jan 1927 | Box 29 \ 1 Scan293 | |
| Hand-drawn diagram illustrating the physics of a gyroscope, with equations for precession and acceleration couples. | 24th Feb 1926 | Box 29 \ 1 Scan294 | |
| Analysis of high-speed wheel wobble, focusing on gyroscopic effects and tire wear characteristics. | 24th Feb 1926 | Box 29 \ 1 Scan295 | |
| The reverse side of a document with a faint pencil sketch and a stamped mark. | 10th May 1920 | Box 29 \ 1 Scan296 | |
| Drawing analyzing high-speed wobble, tire wear, and gyroscopic effects on a vehicle's front axle. | 24th Feb 1926 | Box 29 \ 1 Scan297 | |
| Blueprint showing various conceptual diagrams for steering and suspension systems to address high-speed wobble. | 24th Feb 1926 | Box 29 \ 1 Scan298 | |
| Front axle wobbling issues on the 20 HP model, referencing solutions involving different tyre sizes and steering components. | 3rd May 1927 | Box 29 \ 1 Scan299 | |
| Tests and modifications to address high-speed wobbles. | 12th May 1927 | Box 29 \ 1 Scan300 | |
| Technical memo proposing a modification to a steering box chassis component using lengthened studs and a packing piece, including sketches. | 10th Dec 1932 | Box 29 \ 1 Scan301 | |
| Road test report on high speed wobbles caused by a specific axle and wheel configuration. | 13th May 1927 | Box 29 \ 1 Scan302 | |
| Letter from the US to UK office regarding high-speed steering wobble, test results, and production delays. | 24th May 1927 | Box 29 \ 1 Scan303 | |
| Figures related to high-speed wobble and the necessity for hydraulic shock absorbers. | 6th May 1927 | Box 29 \ 1 Scan304 | |
| Technical drawing analyzing the causes and effects of high-speed wheel wobble, including gyroscopic moments and tire wear. | 24th Feb 1926 | Box 29 \ 1 Scan305 | |
| Drawing with calculations analyzing high-speed wheel wobble and gyroscopic moments. | 5th May 1927 | Box 29 \ 1 Scan306 | |
| Issues with spring-loaded ball ends on the 20 HP cross steering tube and requesting design changes. | 26th May 1927 | Box 29 \ 1 Scan307 | |
| Company's policy on fitting low-pressure tyres and addressing potential customer concerns about wobbles. | 31th May 1927 | Box 29 \ 1 Scan308 | |
| The investigation of high-speed wobbles, particularly the unexpected effect of shock damper loading on out-of-balance tyres. | 14th Jun 1927 | Box 29 \ 1 Scan309 | |
| Tests on vehicle frame wobble, exploring the effects of engine mass, inertia, dampers, and ballast. | 14th Jun 1927 | Box 29 \ 1 Scan310 | |
| Comparison of oscillation time and road speed wobble between an EAC.VII and a Hispano car. | 14th Jun 1927 | Box 29 \ 1 Scan311 | |
| Eliminating high-speed wobbles by adjusting damper, spring, and frame stiffness. | 14th Jun 1927 | Box 29 \ 1 Scan312 | |
| Graph and diagrams comparing the rigidity and periodicity of a Hispano frame versus an E.A.C.7 frame. | 21th Jun 1927 | Box 29 \ 1 Scan313 | |
| Suggestion for an experiment to address high-speed wobbles by modifying the front axle suspension. | 21th Jun 1927 | Box 29 \ 1 Scan314 | |
| Modifications for a 20 HP chassis to address low speed wobbles and a clicking noise in the steering system. | 23th Jun 1927 | Box 29 \ 1 Scan315 | |
| Standardisation of a spring loaded front end side steering tube to prevent low speed wobbles. | 21th Jun 1927 | Box 29 \ 1 Scan316 | |
| The standardisation of chassis parts, detailing costs and testing schedule. | 8th Oct 1927 | Box 29 \ 1 Scan317 | |
| Correcting a previous statement on the torsional stiffness of the Hispano frame compared to the 40/50. | 11th Jul 1927 | Box 29 \ 1 Scan318 | |
| High-speed wobble issues, tyre recommendations, and steering control in relation to Australian accidents. | 17th Oct 1927 | Box 29 \ 1 Scan319 | |
| Low speed steering wobble on the 20-HP chassis based on test results and complaints. | 1st Nov 1927 | Box 29 \ 1 Scan320 | |
| Proposal from Dunlop to film high speed wobbles on a bumping rig. | 1st Nov 1927 | Box 29 \ 1 Scan321 | |
| Steering wobbles and joggles on the 20 HP model with a standardised spring-loaded ball end. | 3rd Nov 1927 | Box 29 \ 1 Scan322 | |
| Investigating 'Wheels Incorporated', a New York company that rectifies steering errors and high-speed wobbles in American cars. | 28th Dec 1927 | Box 29 \ 1 Scan323 | |
| Experiments and observations on the phenomenon of wheel wobble. | 14th Mar 1928 | Box 29 \ 1 Scan324 | |
| High-speed wobble (shimmy) in cars, detailing experiments and observations. | 14th Mar 1928 | Box 29 \ 1 Scan325 | |
| The multiple factors contributing to a vehicle dynamics phenomenon. | 22th Mar 1928 | Box 29 \ 1 Scan326 | |
| Test report on the effect of removing the pivot bearing end plate on high speed wobbles. | 22th Mar 1928 | Box 29 \ 1 Scan327 | |
| Objections to irreversible steering, addressing issues like high-speed wobble and the role of wheel inertia. | 1st Apr 1928 | Box 29 \ 1 Scan328 | |
| Steering wobble (shimmy) and proposed solutions by modifying wheel and king pin geometry. | 7th Apr 1928 | Box 29 \ 1 Scan329 | |
| Using front engine arms to reduce high-speed wobbles on the Phantom model. | 7th Apr 1928 | Box 29 \ 1 Scan330 | |
| Letter from the American branch discussing fitting Truffault shock absorbers to sports cars to address front-wheel wobble. | 12th Apr 1928 | Box 29 \ 1 Scan331 | |
| Proposing a high-speed road test of a 6-cylinder Bentley to investigate 'high speed wobbles'. | 14th Jun 1928 | Box 29 \ 1 Scan332 | |
| Front axle tests altering the wheel centre point to improve steering and reduce wobble. | 8th Jun 1928 | Box 29 \ 1 Scan333 | |
| Experiments with king pin angles, pivots, and front braking systems. | 22th Jun 1928 | Box 29 \ 1 Scan334 | |
| Increased moment of unbalanced force on the 'SS' front axle and requesting a test. | 22th Jun 1928 | Box 29 \ 1 Scan335 | |
| Wheel balance issues, high-speed wobbles, and tests related to the 'SS' front axle. | 27th Jun 1928 | Box 29 \ 1 Scan336 | |
| Technical memo detailing steering improvements for the 40/50 HP model, focusing on overcoming high-speed wobbles. | 5th Jul 1928 | Box 29 \ 1 Scan337 | |
| Experiments with frame stiffness, damping, and suspension to improve high-speed selectivity and riding comfort. | 5th Jul 1928 | Box 29 \ 1 Scan338 | |
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