| Description | Date | Identifier | |
| Reducing the friction stages in the 20-HP steering device from three to two due to stiffness. | 1st Oct 1926 | Box 106 \ 3 scan0108 | |
| Steering modification for the 20HP model to address steering joggle complaints. | 9th Oct 1926 | Box 106 \ 3 scan0109 | |
| Modified steering on existing 20-HP cars. | 29th Oct 1926 | Box 106 \ 3 scan0110 | |
| Modification for the steering on existing 20-HP cars in response to customer complaints. | 27th Oct 1926 | Box 106 \ 3 scan0111 | |
| Modification to the 20 HP side steering tube springs due to a large number of steering complaints. | 30th Oct 1926 | Box 106 \ 3 scan0112 | |
| Standardisation of chassis parts by incorporating 'B' type side levers with 'D' type steering. | 22th Oct 1926 | Box 106 \ 3 scan0113 | |
| Redesign of the longitudinal tube ball end for steering, focusing on safety, shocks, and damping. | 11th Nov 1926 | Box 106 \ 3 scan0114 | |
| Steering issues, complaints of 'joggles', and proposed modifications for the 20 HP model. | 12th Nov 1926 | Box 106 \ 3 scan0115 | |
| Steering system tests and issues like wobbles on the 20 HP and Phantom models. | 15th Nov 1926 | Box 106 \ 3 scan0116 | |
| Clarifying the position and proposed modifications for the 20 HP steering system. | 15th Nov 1926 | Box 106 \ 3 scan0117 | |
| Steering issues and potential modifications for the 20 HP model. | 21th Sep 1926 | Box 106 \ 3 scan0118 | |
| The modification and testing of the 20 HP side steering tube. | 20th Nov 1926 | Box 106 \ 3 scan0119 | |
| Friction in the 20 HP pivots and changes to the steering system. | 29th Nov 1926 | Box 106 \ 3 scan0120 | |
| Issue of steering joggle on the 20 HP model and proposing design modifications. | 1st Dec 1926 | Box 106 \ 3 scan0121 | |
| Load measurements on a cross steering tube under different conditions. | 1st Dec 1926 | Box 106 \ 3 scan0122 | |
| Use of a spring-loaded cross steering tube as a standard, cheaper alternative and a request for its modification. | 1st Dec 1926 | Box 106 \ 3 scan0123 | |
| Modification to the 20 HP side steering tube. | 14th Dec 1926 | Box 106 \ 3 scan0124 | |
| New experimental features fitted to a 20 HP chassis for trial. | 14th Dec 1926 | Box 106 \ 3 scan0125 | |
| Dissatisfaction with the steering on 20-HP cars and recommending retrospective modifications due to breakages. | 16th Dec 1926 | Box 106 \ 3 scan0126 | |
| Standardization of a side steering tube improvement and alternative proposals. | 17th Dec 1926 | Box 106 \ 3 scan0127 | |
| Friction issues in the steering of a 20 HP car. | 17th Dec 1926 | Box 106 \ 3 scan0128 | |
| Recommendations for spring ratings and parts for the 20 HP side steering tube. | 7th Jan 1927 | Box 106 \ 3 scan0129 | |
| Requesting the preparation of a 20 HP steering column with a .750 lead worm and nut for a customer's car, F.54941. | 13th Jan 1927 | Box 106 \ 3 scan0130 | |
| Experiments for the 20 HP side steering tube, with recommendations for different spring setups. | 7th Jan 1927 | Box 106 \ 3 scan0131 | |
| Design choice for a 20 HP steering longitudinal tube. | 10th Jan 1927 | Box 106 \ 3 scan0132 | |
| Modifications to the 20 HP radiator shutters and steering column controls. | 28th Jan 1927 | Box 106 \ 3 scan0133 | |
| Temporary scheme for adding friction and a self-centring spring mechanism to the 20 HP steering column. | 28th Jan 1927 | Box 106 \ 3 scan0134 | |
| Effects of friction and self-centering forces on a vehicle's steering system. | 28th Jan 1927 | Box 106 \ 3 scan0135 | |
| Graph plotting Load in Lbs at the end of a pendulum lever against its angular movement in degrees. | 2nd Feb 1927 | Box 106 \ 3 scan0136 | |
| Investigation into the cause of steering wheel 'joggles' or 'twitching' on the 20 HP model in comparison to the 40/50 HP model. | 2nd Feb 1927 | Box 106 \ 3 scan0137 | |
| Technical memorandum discussing steering tube spring movement, joggle, and potential improvements to the steering geometry. | 2nd Feb 1927 | Box 106 \ 3 scan0138 | |
| Graph and table comparing the angular movement of the steering wheel induced by front axle movement for different chassis types. | 2nd Feb 1927 | Box 106 \ 3 scan0139 | |
| Comparative table of steering characteristics for different Phantom chassis series. | 2nd Feb 1927 | Box 106 \ 3 scan0140 | |
| Table of test results for the 20 HP chassis steering system under various configurations and components. | 2nd Feb 1927 | Box 106 \ 3 scan0141 | |
| Requesting information on potential improvements for the 20 HP steering geometry. | 2nd Feb 1927 | Box 106 \ 3 scan0142 | |
| Summary comparing schemes for a 20 HP side steering tube's springs. | 4th Feb 1927 | Box 106 \ 3 scan0143 | |
| Road quality and the machining of parts and springs for new cars. | 2nd Feb 1927 | Box 106 \ 3 scan0144 | |
| Re-evaluation of friction in the steering column due to variations in steering quality. | 2nd Feb 1927 | Box 106 \ 3 scan0145 | |
| Tests and analysis of friction in the steering system, focusing on the worm and nut mechanism. | 7th Feb 1927 | Box 106 \ 3 scan0146 | |
| Report comparing steering system performance and resistance to 'joggles' across different car models. | 7th Feb 1927 | Box 106 \ 3 scan0147 | |
| Test results and modifications to the steering column on a 20 HP car to improve feel and self-centering. | 7th Feb 1927 | Box 106 \ 3 scan0148 | |
| Report page discussing experiments on car friction, high-speed wobbles and 'joggles', with a related graph showing load versus angular movement. | 7th Feb 1927 | Box 106 \ 3 scan0149 | |
| Technical explanation of steering system friction and its advantages over standard friction. | 7th Feb 1927 | Box 106 \ 3 scan0150 | |
| List of disadvantages concerning low and high-speed wobbles and issues with self-centering. | 10th Feb 1927 | Box 106 \ 3 scan0151 | |
| Potential improvements and experimental trials for steering systems. | 10th Feb 1927 | Box 106 \ 3 scan0152 | |
| Design suggestions for dampers and 20 HP steering, citing being overburdened with work and having a depleted staff. | 10th Feb 1927 | Box 106 \ 3 scan0153 | |
| Friction in the steering column for 40/50 HP and 20 HP cars. | 21th Feb 1927 | Box 106 \ 3 scan0154 | |
| List of parts for a temporary friction scheme on a 'D' type steering column for a 20-HP chassis. | 9th Mar 1927 | Box 106 \ 3 scan0155 | |
| Instruction to trial an aluminium bracket for connecting the steering column to the dashboard on the Phantom model. | 15th Mar 1927 | Box 106 \ 3 scan0156 | |
| Potential improvements to the vehicle's steering system. | 22th Mar 1927 | Box 106 \ 3 scan0157 | |
| Preferred combinations for steering system components and damping methods. | 1st Apr 1927 | Box 106 \ 3 scan0158 | |
| Steering geometry of the EAC.7, comparing its bump and rebound characteristics with the Phantom and 20 HP models. | 1st Apr 1927 | Box 106 \ 3 scan0159 | |
| Continuation of a report on the worsened geometry of the EAC.7 component after modifications. | 1st Apr 1927 | Box 106 \ 3 scan0160 | |
| Cause of bad steering geometry on the 20 HP model and suggesting an experiment with a previously abandoned side steering lever. | 1st Apr 1927 | Box 106 \ 3 scan0161 | |
| Alternative proposals for steering modifications and associated experiments. | 7th Apr 1927 | Box 106 \ 3 scan0162 | |
| Proposal and experimental setup for a returning spring on the worm tube for steering. | 7th Apr 1927 | Box 106 \ 3 scan0163 | |
| Cause of a steering 'joggle' on a 20 HP car, weighing geometry vs. gyroscopic action. | 30th Apr 1927 | Box 106 \ 3 scan0164 | |
| Improvements to the 20 HP steering geometry by altering the side steering tube layout. | 30th Apr 1927 | Box 106 \ 3 scan0165 | |
| Device to add friction to the steering column for 'India Steering'. | 5th May 1927 | Box 106 \ 3 scan0166 | |
| Clicking or knocking issue in the 20 HP side steering tube springs caused by suction. | 7th May 1927 | Box 106 \ 3 scan0167 | |
| Experiments for the general improvement of the Phantom steering system. | 12th May 1927 | Box 106 \ 3 scan0168 | |
| Modification to a spanner for adjusting the ball thrust race on the India steering friction device. | 13th May 1927 | Box 106 \ 3 scan0169 | |
| Clicking issue in the 20 HP side steering tube and potential modifications. | 14th May 1927 | Box 106 \ 3 scan0170 | |
| Order for parts for a raked type friction device on a 20-HP Chassis steering column. | 17th Jun 1927 | Box 106 \ 3 scan0171 | |
| Parts list and instruction to produce and fit a friction device on a steering column for a 20-HP experimental chassis. | 21th May 1927 | Box 106 \ 3 scan0172 | |
| The effect of tyre tread shape on steering heaviness for 40/50 HP and 20 HP models. | 23th Jun 1927 | Box 106 \ 3 scan0173 | |
| Difficulties with friction in the 20 HP steering column, suggesting a design change to the plates. | 1st Aug 1927 | Box 106 \ 3 scan0174 | |
| Request to make two sets of friction parts for 40/50 HP models and two sets for 20 HP models. | 1st Aug 1927 | Box 106 \ 3 scan0175 | |
| Friction and play issues in the steering column, referencing observations made on a 'blue car'. | 17th Aug 1927 | Box 106 \ 3 scan0176 | |
| Potential improvements for the 20 HP model, regarding steering, chassis, bodywork, and tyres. | 9th Sep 1927 | Box 106 \ 3 scan0177 | |
| Deletion of 'B' steering, the body type, and the standardisation of a wider dash. | 9th Sep 1927 | Box 106 \ 3 scan0178 | |
| Standardisation of the mixture control on the column to align the design with the Phantom model. | 23th May 1927 | Box 106 \ 3 scan0179 | |
| Introduction of a new part for an 'M' series chassis, including test date and costs. | 1st Apr 1928 | Box 106 \ 3 scan0180 | |
| Difficulty in fitting Flexi-Lubri covers over the pendulum lever for a 20 HP car. | 14th Oct 1927 | Box 106 \ 3 scan0181 | |
| Technical note regarding the fitting issue of a Flexi-Lubri cover onto a 20 HP pendulum lever ball end. | 14th Oct 1927 | Box 106 \ 3 scan0182 | |
| Ongoing complaints and potential tests for the 20 HP steering system. | 14th Oct 1927 | Box 106 \ 3 scan0183 | |
| Request to produce revised friction plates for the steering column friction device on a 20-HP experimental chassis. | 19th Oct 1927 | Box 106 \ 3 scan0184 | |
| Blueprint showing an experimental test on S.S. Tube Joints, schemes N.Sch 2258 and 2301, including load test graphs. | 8th Nov 1927 | Box 106 \ 3 scan0185 | |
| Adding friction to the 20 HP steering column and improving the steering geometry. | 22th Oct 1927 | Box 106 \ 3 scan0186 | |
| Trial of improved steering geometry for the 20 HP model. | 25th Oct 1927 | Box 106 \ 3 scan0187 | |
| Revisions to the 20 HP model, including engine upgrades, a longer chassis, and standardized steering. | 29th Oct 1927 | Box 106 \ 3 scan0188 | |
| Road tests on a 20 HP model with modified steering geometry. | 8th Nov 1927 | Box 106 \ 3 scan0189 | |
| Deletion of oil holes and grooves in steering worms, returning to the original design. | 14th Nov 1927 | Box 106 \ 3 scan0190 | |
| Standardisation of chassis parts by deleting oil holes and grooves in steering worms to reduce cost. | 20th Oct 1927 | Box 106 \ 3 scan0191 | |
| Standardisation form for chassis parts detailing changes, costs, and implementation schedule. | 31th Oct 1921 | Box 106 \ 3 scan0192 | |
| The assembly of Side Steering Tubes for the 20-HP chassis improved geometry scheme. | 18th Nov 1927 | Box 106 \ 3 scan0193 | |
| Updates and replacement parts for the steering geometry on a 20-HP Chassis. | 17th Nov 1927 | Box 106 \ 3 scan0194 | |
| Inclusion of new steering components in a chassis for testing before a 10,000-mile test in France. | 22th Nov 1927 | Box 106 \ 3 scan0195 | |
| Confirmation of clearance modifications to the 20 HP side steering tube for improved geometry, requesting new part details for an ongoing bump test. | 8th Dec 1927 | Box 106 \ 3 scan0196 | |
| Steering complaint from Mr. Geoffrey Summers, detailing delays on a modification and offering a 20 HP car. | 23th Dec 1927 | Box 106 \ 3 scan0197 | |
| Failure of 20 HP side steering tube springs during tests and proposing a new standard spring. | 2nd Jan 1928 | Box 106 \ 3 scan0198 | |
| Standardisation of chassis parts for an improved 20 HP steering geometry. | 22th Dec 1927 | Box 106 \ 3 scan0199 | |
| Standardisation form for a new chassis part, detailing the first chassis for fitting, test date, and associated costs. | 1st Apr 1928 | Box 106 \ 3 scan0200 | |
| Technical memorandum discussing steering imperfections and potential improvements for the 20 HP and 45 HP models. | 25th Mar 1928 | Box 106 \ 3 scan0201 | |
| Modifications to the steering pivot on 20 HP & 40/50 models to reduce road shocks. | 31th Mar 1928 | Box 106 \ 3 scan0202 | |
| Outlining objections to an irreversible steering system, focusing on high-speed wobble, handling, and component reliability. | 1st Apr 1928 | Box 106 \ 3 scan0203 | |
| Technical discussion on the causes of wheel wobble and potential steering geometry solutions. | 4th Jul 1928 | Box 106 \ 3 scan0204 | |
| Review of steering columns, scuttles, and dashboards for 20 HP and 40 HP models, detailing issues of flexibility, vibration and potential solutions. | 4th Jul 1928 | Box 106 \ 3 scan0205 | |
| Comparing the overall steering ratios of various American cars to the 40/50 model. | 2nd Apr 1928 | Box 106 \ 3 scan0206 | |
| Steering system design, flexibility, and comparison with competitor vehicles. | 16th Apr 1928 | Box 106 \ 3 scan0207 | |
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