| Description | Date | Identifier | |
| Friction requirements and design suggestions for the cross steering tube on a 12-EX car with balloon tyres. | 1st Nov 1926 | Box 67 \ 3 scan0010 | |
| Steering stiffness on the 20 HP car, comparing the existing friction device with a proposed spring-loaded cross steering tube. | 1st Nov 1926 | Box 67 \ 3 scan0011 | |
| And calculating steering friction couples related to new friction plates and a damper. | 4th Nov 1926 | Box 67 \ 3 scan0012 | |
| Proposals and experiments to manage friction in a new front axle, steering pivots, and multi-plate clutch. | 5th Nov 1926 | Box 67 \ 3 scan0013 | |
| Design objectives and limitations for steering tube ball ends, focusing on safety, shocks, and damping. | 11th Nov 1926 | Box 67 \ 3 scan0014 | |
| The effect of lubrication on the ball joints of a loaded cross steering tube. | 16th Nov 1926 | Box 67 \ 3 scan0015 | |
| From DA to Hs. regarding the unsatisfactory steering on Mr. Royce's car 7-EX. | 20th Nov 1926 | Box 67 \ 3 scan0016 | |
| Modifications required for leather covers for brake and cross steering joints on a Phantom model. | 23th Nov 1926 | Box 67 \ 3 scan0017 | |
| Potential modification of cross steering levers to address brake squeaking on the lightened front axle. | 30th Nov 1926 | Box 67 \ 3 scan0018 | |
| Cure for 'steering joggles' on the 20 HP model by increasing friction in the cross steering tube. | 1st Dec 1926 | Box 67 \ 3 scan0019 | |
| Alternative spring parts for the spring-loaded cross steering joint on a 40/50 Phantom chassis. | 7th Dec 1926 | Box 67 \ 3 scan0020 | |
| Required spring load for the cross steering tubes on 40/50 HP and 20 HP cars. | 14th Dec 1926 | Box 67 \ 3 scan0021 | |
| Graph plotting load versus set up for cross steering tube springs. | 21th Dec 1926 | Box 67 \ 3 scan0022 | |
| Requesting the manufacture and testing of a spring-loaded cross steering tube for a Phantom vehicle. | 21th Dec 1926 | Box 67 \ 3 scan0023 | |
| Part replacement scheme for the Phantom 40/50 Chassis cross steering lever. | 21th Dec 1926 | Box 67 \ 3 scan0024 | |
| Blueprints for two alternative springs for the 40/50 Phantom chassis for experimental purposes. | 31th Dec 1926 | Box 67 \ 3 scan0025 | |
| To expedite the arrival of specific car springs. | 3rd Jan 1927 | Box 67 \ 3 scan0026 | |
| Standardisation document for an alteration to the springs in the cross steering tube to improve steering stability. | 10th Jan 1927 | Box 67 \ 3 scan0027 | |
| Required free length of springs and the supply of washers for the 40/50 Cross Steering Tube. | 22th Jan 1927 | Box 67 \ 3 scan0028 | |
| Instructions for fitting and testing the 40/50 Cross Steering Tube. | 22th Jan 1927 | Box 67 \ 3 scan0029 | |
| Fitting instructions for the 40/50 cross steering tube. | 22th Jan 1927 | Box 67 \ 3 scan0030 | |
| Results of bench and road tests on friction in a steering pivot head. | 26th Jan 1927 | Box 67 \ 3 scan0031 | |
| Continued analysis of friction and torque measurements for different mechanical arrangements. | 26th Jan 1927 | Box 67 \ 3 scan0032 | |
| Report analyzing steering friction values for different axle pivot configurations and spring load setups. | 26th Jan 1927 | Box 67 \ 3 scan0033 | |
| Continued memo discussing a friction device and potential modifications to the steering system. | 29th Jan 1927 | Box 67 \ 3 scan0034 | |
| Clarifying the testing procedure and specified load for steering wheel rotation after the final road test. | 29th Jan 1927 | Box 67 \ 3 scan0035 | |
| The merits and issues of implementing hydraulic damping on steering systems. | 1st Feb 1927 | Box 67 \ 3 scan0036 | |
| Modification to the cross steering tube to reduce friction for cars with older front axles. | 13th Apr 1927 | Box 67 \ 3 scan0037 | |
| Instructions for the modification and fitting of distance collars on spring-loaded cross steering tubes. | 29th Apr 1927 | Box 67 \ 3 scan0038 | |
| The benefits of damping friction on the steering tube to avoid rattles. | 29th Apr 1927 | Box 67 \ 3 scan0039 | |
| On the adjustment and fitting of the spring-loaded cross steering tube, especially concerning old axles and balloon tyres. | 1st Jul 1927 | Box 67 \ 3 scan0040 | |
| Reduction of load on the cross steering tube for the 40/50-HP chassis to improve steering. | 14th Nov 1927 | Box 67 \ 3 scan0041 | |
| Decision to delay adopting front springs with 1' negative camber on the standard Phantom until torque control is fitted, and a proposal to lower the rear of the car. | 1st Dec 1927 | Box 67 \ 3 scan0042 | |
| Steering adjustments for the 8-EX car. | 8th Jan 1928 | Box 67 \ 3 scan0043 | |
| Query regarding the feasibility of removing the bend from the cross steering tube following the fitting of an axle control. | 1st May 1928 | Box 67 \ 3 scan0044 | |
| Clearance for the Phantom cross steering tube when the engine is moved forward. | 17th May 1928 | Box 67 \ 3 scan0045 | |
| Accompanying a report regarding the lubrication of ball ends and arranging a follow-up. | 27th Nov 1928 | Box 67 \ 3 scan0046 | |
| Lubrication challenges of cross steering tube ball ends. | 24th Nov 1928 | Box 67 \ 3 scan0047 | |
| Requesting an urgent modification to a ball end and pad to address seizure complaints. | 28th Nov 1928 | Box 67 \ 3 scan0048 | |
| Proposing a solution to address ball end seizure in a cross steering tube. | 28th Nov 1928 | Box 67 \ 3 scan0049 | |
| Cross-sectional diagram of a valve assembly with instructional notes. | 28th Nov 1928 | Box 67 \ 3 scan0050 | |
| Extract from a visit to sales discussing the potential abolition of the 'C' steering column based on driver positioning. | 12th Feb 1924 | Box 67 \ 3 scan0051 | |
| Secret memorandum discussing the steering and front spring arrangement. | 19th Feb 1924 | Box 67 \ 3 scan0052 | |
| Feedback on steering speed and a proposed modification, comparing it to a Hispano model. | 14th Aug 1924 | Box 67 \ 3 scan0053 | |
| Secret memo discussing the provision of chassis prints for a 'D' steering long chassis and a 'P' steering sports model. | 14th Aug 1924 | Box 67 \ 3 scan0054 | |
| Secret memorandum discussing the replacement of the mixture control onto the steering column and alternative manufacturing methods for the steering worm. | 28th Aug 1924 | Box 67 \ 3 scan0055 | |
| Secret memo regarding the design, steering compromises, and high-speed testing of balloon tyres for the EAC.11 model. | 17th Oct 1924 | Box 67 \ 3 scan0056 | |
| Note about the reduction in tyre section for the 20 HP model. | 13th Nov 1924 | Box 67 \ 3 scan0057 | |
| Issues with the EAC.11 model's radiator appearance and steering column vibration. | 13th Nov 1924 | Box 67 \ 3 scan0058 | |
| Proposed modification to the steering gear ratio on the 40/50 HP model to reduce driver effort and prevent wobble. | 25th Nov 1924 | Box 67 \ 3 scan0059 | |
| Proposed steering modification for the 40/50 HP model to reduce effort and improve stability. | 25th Nov 1924 | Box 67 \ 3 scan0060 | |
| Secret memo from Hs to PN regarding the standardisation of lower geared steering for model EAC.11. | 26th Nov 1924 | Box 67 \ 3 scan0061 | |
| Modifications and vibration issues on car 93-NK, focusing on engine coupling alternatives. | 26th Nov 1924 | Box 67 \ 3 scan0062 | |
| Steering column vibration, control alterations, and exhaust noise on the 40/50 HP model. | 19th Dec 1924 | Box 67 \ 3 scan0063 | |
| 40/50 HP steering nut wear, identifying lack of lubrication as the cause and describing a redesign for an oil-tight steering box. | 19th Dec 1924 | Box 67 \ 3 scan0064 | |
| Driver vision issues caused by new steering wheel positions. | 19th Dec 1924 | Box 67 \ 3 scan0065 | |
| Secret memorandum responding to a query about steering wheel positions on various car series and types. | 22th Dec 1924 | Box 67 \ 3 scan0066 | |
| Decision memo on using a plain bearing for the 'V' & 'W' series steering column gearbox. | 30th Dec 1924 | Box 67 \ 3 scan0067 | |
| Secret memo discussing issues with steering positions, driver vision and comfort after converting a 40/50 car into a 'V' series EAC. | 31th Dec 1924 | Box 67 \ 3 scan0068 | |
| Complaint about the seating position and visibility in a 'V' series car, proposing an inspection. | 1st Jan 1925 | Box 67 \ 3 scan0069 | |
| Temporary wooden frame seat to standardize seating position measurements for coachbuilders. | 1st Mar 1925 | Box 67 \ 3 scan0070 | |
| Experimental steering setups for the 'V' series, including wheel positions and a missing technical drawing for a universal joint. | 7th Jan 1925 | Box 67 \ 3 scan0071 | |
| Driver seating positions and obstructed vision on 'EAC' 'V' series cars. | 1st Jan 1925 | Box 67 \ 3 scan0072 | |
| Page discussing the importance of settling correct seating positions. | 1st Jan 1925 | Box 67 \ 3 scan0073 | |
| The seating positions and driver's view on 'EAC' 'V' series cars. | 1st Jan 1925 | Box 67 \ 3 scan0074 | |
| Typed memo discussing the urgency of settling correct seating positions. | 13th Jan 1925 | Box 67 \ 3 scan0075 | |
| Secret memorandum regarding a new scheme for 'B', 'C' and 'D' steerings on Series 'V' controls. | 13th Jan 1925 | Box 67 \ 3 scan0076 | |
| List of twelve questions regarding the particulars of the EAC Steering system. | 16th Jan 1925 | Box 67 \ 3 scan0077 | |
| Confirming the steering wheel position on E.A.C. and the electric switch arrangement for the 'V' Series. | 26th Jan 1925 | Box 67 \ 3 scan0078 | |
| Proposed modifications to the steering column on 'V' Series cars. | 26th Jan 1925 | Box 67 \ 3 scan0079 | |
| The comparative efficiency tests of EAC and 40/50 steering columns. | 15th Feb 1925 | Box 67 \ 3 scan0080 | |
| Steering reversibility tests and gearbox modifications, including a cross-sectional drawing. | 15th Feb 1925 | Box 67 \ 3 scan0081 | |
| Particulars of 40/50 and EAC steering systems, including movement calculations. | 15th Feb 1925 | Box 67 \ 3 scan0082 | |
| Diagram illustrating the method for measuring input and output load on a steering system. | 15th Feb 1925 | Box 67 \ 3 scan0083 | |
| Diagrams illustrating a reversibility test for unwinding and steering lock positions. | 14th Feb 1925 | Box 67 \ 3 scan0084 | |
| Modification drawing for a rocking shaft bearing on a 40/50 Chassis V Series. | 14th Feb 1925 | Box 67 \ 3 scan0085 | |
| Graph plotting the results of a reversibility test on various worm gears. | 14th Feb 1925 | Box 67 \ 3 scan0086 | |
| Graph plotting input versus output load tests for different steering gear configurations. | 14th Feb 1925 | Box 67 \ 3 scan0087 | |
| Graph of input-output tests from centre to right-hand lock, comparing different worm gear configurations. | 17th Feb 1925 | Box 67 \ 3 scan0088 | |
| Secret memo from GWH to Hs. regarding the progress of work on various cars and a comparison of EAC and Hispano steering. | 17th Feb 1925 | Box 67 \ 3 scan0089 | |
| Comparison of steering effort against tyre pressure for a Rolls-Royce and a Hispano Suiza car. | 16th Feb 1925 | Box 67 \ 3 scan0090 | |
| Testing a modification to the 'V' Series steering system by bolting the rocker shaft arms together. | 28th Feb 1925 | Box 67 \ 3 scan0091 | |
| Modifications to the E.A.C. steering box design, moving away from roller bearings. | 3rd Mar 1925 | Box 67 \ 3 scan0092 | |
| Design improvements for a steering box mechanism. | 10th Mar 1925 | Box 67 \ 3 scan0093 | |
| The steering effort of the E.A.C. 'V' series car. | 13th Mar 1925 | Box 67 \ 3 scan0094 | |
| Comparing the steering effort and components of Hispano, 40/50, and EAC systems. | 3rd Mar 1925 | Box 67 \ 3 scan0095 | |
| Secret memo discussing the cause of steering differences in the 'V' series, specifically related to weight. | 18th Mar 1925 | Box 67 \ 3 scan0096 | |
| Heavy steering issues, comparing designs, and proposing potential improvements. | 23th Mar 1925 | Box 67 \ 3 scan0097 | |
| Design alternatives for a pendulum lever shaft and worm gear. | 25th Mar 1925 | Box 67 \ 3 scan0098 | |
| Secret memo regarding a proposed whitemetal lined steering nut for the 'V' series steering worm. | 25th Mar 1925 | Box 67 \ 3 scan0099 | |
| Comparing the steering geometry of the 'V' series with the older EAC.3 model. | 25th Mar 1925 | Box 67 \ 3 scan0100 | |
| Secret memorandum discussing potential causes and experimental solutions for steering column binding issues. | 1st Apr 1925 | Box 67 \ 3 scan0101 | |
| Proposal for a scheme of a nut and rockers shaft for the 20 HP model, suggesting an experimental build. | 2nd Apr 1925 | Box 67 \ 3 scan0102 | |
| Suggestion for a Series 'V' steering nut made from steel with a whitemetal lining. | 2nd Apr 1925 | Box 67 \ 3 scan0103 | |
| Cover note for an attached telegram with noted alterations. | 3rd Apr 1925 | Box 67 \ 3 scan0104 | |
| Confirmation of a telegram discussing steering lubrication issues and potential improvements. | 6th Apr 1925 | Box 67 \ 3 scan0105 | |
| Showing a received telegram and its corrected interpretation regarding mechanical parts and testing. | 6th Apr 1925 | Box 67 \ 3 scan0106 | |
| Comparing the force required for different steering systems, including the 'EAC' steering. | 1st Apr 1925 | Box 67 \ 3 scan0107 | |
| Comparing steering effort on 'V' series and 40/50 cars with varying tyre pressures and axle weights. | 25th Sep 1924 | Box 67 \ 3 scan0108 | |
| Tests conducted on steering gear to address issues of heavy steering. | 25th Sep 1924 | Box 67 \ 3 scan0109 | |
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