| Description | Date | Identifier | |
| Ongoing issues and potential solutions for steering control rattles. | 27th Jan 1921 | Box 38 \ 1 Scan078 | |
| The failure and weakness of steering gear aluminium boxes. | 24th Mar 1921 | Box 38 \ 1 Scan079 | |
| The failure of steering gear aluminium boxes. | 31th Mar 1921 | Box 38 \ 1 Scan080 | |
| Failure of steering gear aluminium boxes and a request for further examination. | 7th Apr 1921 | Box 38 \ 1 Scan081 | |
| The despatch of a broken steering box to Mr. Royce. | 20th Jun 1921 | Box 38 \ 1 Scan082 | |
| Failure of 40/50 steering boxes and the need for a design change to prevent sudden breakage. | 20th Jun 1921 | Box 38 \ 1 Scan083 | |
| Failure of 40/50 model steering boxes. | 27th Jun 1921 | Box 38 \ 1 Scan084 | |
| Requesting that steering boxes be cast bigger to avoid internal 'hacking' away to get clearance. | 28th Jun 1921 | Box 38 \ 1 Scan085 | |
| Forwarding a copy of another memo from Paris concerning steering nuts, requesting comments. | 13th Jul 1921 | Box 38 \ 1 Scan086 | |
| The strength of steering nut housings, identified as a weak point. | 6th Jul 1921 | Box 38 \ 1 Scan087 | |
| Strengthened rocker arm in the steering box. | 7th Feb 1922 | Box 38 \ 1 Scan088 | |
| Production issues, part quantities, and scrapping costs for Rocker Arms. | 13th Feb 1922 | Box 38 \ 1 Scan089 | |
| Summary of correspondence regarding the implementation of a strengthened rocker arm in a steering box. | 22th Feb 1922 | Box 38 \ 1 Scan090 | |
| Standardization of a strengthened rocker arm for the steering box, considering existing stock and potential safety risks. | 2nd Mar 1922 | Box 38 \ 1 Scan091 | |
| Use of old versus new strengthened Rocker Arms in the Steering Box. | 2nd Mar 1922 | Box 38 \ 1 Scan092 | |
| Conference on strengthened rocker arms in steering boxes and using up existing stock. | 11th Mar 1922 | Box 38 \ 1 Scan093 | |
| Complaint from America about a cracked steering column tube on chassis 51-UB due to a manufacturing defect. | 23th Aug 1922 | Box 38 \ 1 Scan094 | |
| Investigation into a faulty steering column on a pre-war chassis, including changes to the manufacturing process. | 25th Aug 1922 | Box 38 \ 1 Scan095 | |
| Steering performance, comparing setups with and without radius rods fitted. | 6th Sep 1922 | Box 38 \ 1 Scan096 | |
| Issues of slackness in steering box bearings, detailing a customer complaint and proposing component replacement and further investigation. | 5th Oct 1922 | Box 38 \ 1 Scan097 | |
| Mr. Royce's requested modifications to the steering wheel for the 6.EX car. | 4th Nov 1922 | Box 38 \ 1 Scan098 | |
| Steering box failures on the 40/50 chassis and proposing a material change to aluminium bronze. | 11th Dec 1922 | Box 38 \ 1 Scan099 | |
| Letter reporting repeated failures of steering boxes and suggesting the part is proving to be very weak. | 4th Dec 1922 | Box 38 \ 1 Scan100 | |
| Letter regarding the frequent failure of steering boxes on several cars after minor impacts. | 12th Dec 1922 | Box 38 \ 1 Scan101 | |
| Standardisation proposal for the Aluminium Bronze Steering Box to overcome failures. | 12th Dec 1922 | Box 38 \ 1 Scan102 | |
| Steering box failures and recommending a material change from aluminium to aluminium-bronze. | 12th Dec 1922 | Box 38 \ 1 Scan103 | |
| Standardisation sheets, modifications to the 40/50 chassis, and aero engine work. | 14th Dec 1922 | Box 38 \ 1 Scan104 | |
| Mr. Royce's requested modifications for an 18-inch steering wheel model. | 16th Dec 1922 | Box 38 \ 1 Scan105 | |
| Steering wobble, the effect of radius rods, pivot splaying and tyre springiness. | 20th Dec 1922 | Box 38 \ 1 Scan106 | |
| From B.J. to Hs. regarding Mr. Royce's disagreement with Standardisation Sheet No. 3465 for an Aluminium Bronze Steering Box. | 1st Jan 1928 | Box 38 \ 1 Scan107 | |
| Steering characteristics, specifically the lack of self-centering and the effects of plain thrust and radius rods. | 1st Jan 1923 | Box 38 \ 1 Scan108 | |
| Technical analysis of steering column friction, road shock, and pivot design. | 9th Jan 1923 | Box 38 \ 1 Scan109 | |
| Record of load tests performed on a standard steering system with a diagram. | 9th Jan 1923 | Box 38 \ 1 Scan110 | |
| Instructions and sketch for testing a steering column under load. | 9th Jan 1923 | Box 38 \ 1 Scan111 | |
| Comparison of the 40/50 HP steering system with the Delage steering system. | 10th Jan 1925 | Box 38 \ 1 Scan112 | |
| Report comparing steering effort and road shock transmission between a Delage car and a 40/50 HP model. | 10th Jan 1925 | Box 38 \ 1 Scan113 | |
| Steering effort tests comparing a 40/50 model, an R.R. model, and a Delage car. | 13th Jan 1923 | Box 38 \ 1 Scan114 | |
| Pivot inclination angles on front axles for 'Stork', 'Heron', and 'Goshawk' models, referencing wobbling issues and Delage steering. | 13th Jan 1923 | Box 38 \ 1 Scan115 | |
| Query for particulars of a Delage steering system for comparative calculations against a 40/50 model. | 15th Jan 1923 | Box 38 \ 1 Scan116 | |
| Design changes to the 'Seagull' steering box, moving to a worm and worm-wheel system. | 15th Jan 1923 | Box 38 \ 1 Scan117 | |
| Test procedure for a rig designed to test the efficiency of carrying trunnions in the 40/50 steering box. | 19th Jan 1923 | Box 38 \ 1 Scan118 | |
| The successful implementation of a solid steering nut on the 40/50 model. | 22th Jan 1923 | Box 38 \ 1 Scan119 | |
| Alterations to a steering mechanism, including abandoning certain components and correcting geometric errors. | 29th Jan 1923 | Box 38 \ 1 Scan120 | |
| Despatch of a wooden model steering wheel for inspection. | 3rd Mar 1923 | Box 38 \ 1 Scan121 | |
| New wooden model of a 40/50 steering wheel, considered an improvement. | 13th Mar 1923 | Box 38 \ 1 Scan122 | |
| Design and standardization of a larger 40/50 steering wheel, comparing it to the Goshawk model. | 1st Apr 1923 | Box 38 \ 1 Scan123 | |
| Recommendation to make the 17.5-inch celluloid covered steering wheel for the 40/50 model a standard feature. | 6th Jul 1923 | Box 38 \ 1 Scan124 | |
| The standardisation of an improved taper type ball end for the 40/50 chassis and the required modifications to steering levers. | 24th Sep 1923 | Box 38 \ 1 Scan125 | |
| Standardisation of a washer for the steering box stud. | 26th Sep 1923 | Box 38 \ 1 Scan126 | |
| Standardisation of a steering wheel by adding a collar to the spokes to improve finish and appearance. | 25th Sep 1923 | Box 38 \ 1 Scan127 | |
| Standardisation of a steering box with more room to avoid hand-work. | 25th Sep 1923 | Box 38 \ 1 Scan128 | |
| Proposed alteration to the steering wheel design for the 40/50 HP chassis and arranging a road test. | 10th Dec 1923 | Box 38 \ 1 Scan129 | |
| Proposal to standardise the 18-inch Dover type steering wheel for the 40/50HP chassis, including corrections to drawings. | 12th Dec 1923 | Box 38 \ 1 Scan130 | |
| Design flaws of a proposed larger steering wheel after road testing on a 107-MG vehicle. | 28th Dec 1923 | Box 38 \ 1 Scan131 | |
| Feedback on a proposed larger steering wheel for the 40/50 HP model. | 3rd Jan 1924 | Box 38 \ 1 Scan132 | |
| Standardisation document for an improved design of a steering wheel, increasing its diameter. | 8th Dec 1923 | Box 38 \ 1 Scan133 | |
| Standardisation document for an improved design of steering wheel. | 8th Dec 1923 | Box 38 \ 1 Scan134 | |
| The specifications for a larger steering wheel for the 40/50 HP model. | 14th Jan 1924 | Box 38 \ 1 Scan135 | |
| Improved steering wheel design, returning an incomplete sheet and awaiting a new sample. | 14th Jan 1924 | Box 38 \ 1 Scan136 | |
| New larger diameter 40/50 steering wheel with a thicker rim and rounded spokes. | 14th Jan 1924 | Box 38 \ 1 Scan137 | |
| Analysis of the factors causing steering wheel movements at high speeds on rough roads. | 26th Mar 1924 | Box 38 \ 1 Scan138 | |
| Analysis of steering dynamics, including gyroscopic effects, wheel inertia, and front axle anchorage. | 26th Mar 1924 | Box 38 \ 1 Scan139 | |
| Causes of and solutions for road shocks in car steering systems, including pivot points and wheel design. | 29th Mar 1924 | Box 38 \ 1 Scan140 | |
| Steering tests for a 40/50 car fitted with a front axle and disc wheels. | 1st Apr 1924 | Box 38 \ 1 Scan141 | |
| Steering shock when driving over obstacles. | 1st Apr 1924 | Box 38 \ 1 Scan142 | |
| Steering tests and issues with low-speed wobbles. | 12th Jul 1923 | Box 38 \ 1 Scan143 | |
| Steering geometry, components and potential modifications to mitigate road shocks. | 10th Apr 1924 | Box 38 \ 1 Scan144 | |
| Requesting an update on the status of the 40/50 HP steering wheel. | 7th May 1924 | Box 38 \ 1 Scan145 | |
| Receiving a larger diameter steering wheel for the 40/50 HP model to address sales criticism. | 12th May 1924 | Box 38 \ 1 Scan146 | |
| Use of floating steering pivot bushes and the superiority of grease over oil for lubrication. | 14th May 1924 | Box 38 \ 1 Scan147 | |
| Different types of steering wheels for the 40/50 HP chassis. | 20th May 1924 | Box 38 \ 1 Scan148 | |
| Larger diameter 40/50 HP chassis steering wheel sent for review by the Sales Department. | 27th May 1924 | Box 38 \ 1 Scan149 | |
| From Hs. to Roy. regarding the purchase of a small wheel for experimental purposes. | 11th Jun 1924 | Box 38 \ 1 Scan150 | |
| Request to standardise a larger steering wheel for the 40/50 HP model following a sales recommendation. | 18th Jun 1924 | Box 38 \ 1 Scan151 | |
| Standardisation document for an improved, larger diameter steering wheel. | 6th Dec 1923 | Box 38 \ 1 Scan152 | |
| Sample steering pivot bush lined with Kelmet metal. | 26th Sep 1924 | Box 38 \ 1 Scan153 | |
| Despatch of a sample steering pivot bush to Mr. Day in Canada for examination. | 26th Sep 1924 | Box 38 \ 1 Scan154 | |
| Manufacturing challenges for die-cast steering wheels and evaluating alternative suppliers. | 30th Jan 1925 | Box 38 \ 1 Scan155 | |
| Clarifying production difficulties with Silvertown and Dover steering wheels. | 2nd Feb 1925 | Box 38 \ 1 Scan156 | |
| Casting difficulties for steering wheel centres for the present design and the Dover type. | 2nd Feb 1925 | Box 38 \ 1 Scan157 | |
| Casting difficulties of die-cast versus sand-cast steering wheels. | 5th Feb 1925 | Box 38 \ 1 Scan158 | |
| Forwarding a blueprint comparing steering on the 40/50 HP chassis, with and without front wheel brakes (F.W.B.). | 21th Mar 1925 | Box 38 \ 1 Scan159 | |
| The causes and potential solutions for heavy steering issues on the 40/50 and EAC models. | 27th Apr 1925 | Box 38 \ 1 Scan160 | |
| Unfinished 40/50HP chassis steering wheel being sent for use on an experimental car. | 7th May 1925 | Box 38 \ 1 Scan161 | |
| Sourcing options, costs, and production issues for 40/50 HP steering wheels. | 20th May 1925 | Box 38 \ 1 Scan162 | |
| The quality of 40/50 HP steering wheels, proposing a move from cast centres to forged Duralumin centres. | 27th May 1925 | Box 38 \ 1 Scan163 | |
| Steering wobble problem for clients Carlos de Salamanca and the King of Spain, and a proposed patented solution. | 20th Jun 1925 | Box 38 \ 1 Scan164 | |
| Extract discussing steering box mounting issues on 40/50 and EAC models and proposed solutions. | 29th Apr 1925 | Box 38 \ 1 Scan165 | |
| Requesting a larger diameter experimental steering wheel for car 78-FW. | 9th Feb 1925 | Box 38 \ 1 Scan166 | |
| 'wheel wobble' issue, requesting the chassis number for further diagnosis. | 16th Oct 1925 | Box 38 \ 1 Scan167 | |
| Diagnosing the cause of wheel wobble and illustrating a method of correction. | 12th Jun 1925 | Box 38 \ 1 Scan168 | |
| Recommendations to correct low-speed wobble and shimmy. | 16th Oct 1925 | Box 38 \ 1 Scan169 | |
| New Phantom car being taken to France for a 10,000-mile test. | 24th Oct 1925 | Box 38 \ 1 Scan170 | |
| Discussion about steering wobble issues on 'Silver Ghost' models fitted with front-wheel brakes. | 23th Oct 1925 | Box 38 \ 1 Scan171 | |
| Internal report discussing the correct phrasing for a letter to owners about front wheel balancing on Silver Ghost cars. | 12th Jun 1925 | Box 38 \ 1 Scan172 | |
| Standardisation of the steering wheel size for the New Phantom. | 10th Mar 1926 | Box 38 \ 1 Scan173 | |
| Two potential causes of steering stiffness on chassis No. 22-LC. | 13th Mar 1926 | Box 38 \ 1 Scan174 | |
| Performance data for a Silver Ghost type nut and worm with 1.125 lead. | 13th Mar 1926 | Box 38 \ 1 Scan175 | |
| Calculation sheet for a Silver Ghost type Nut & Worm with a 1.125 lead, detailing loads, efforts, and efficiencies. | 13th Mar 1926 | Box 38 \ 1 Scan176 | |
| From 'R.' to 'J.' discussing the bonding of radiator tanks to the matrix, referencing a previous memo from Mr. Wormald. | 19th Dec 1918 | Box 38 \ 2 Scan001 | |
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