| Description | Date | Identifier | |
| Letter discussing the performance and handling issues of a side steering tube fitted with soft springs. | 12th Apr 1928 | Box 154 \ 3 scan0064 | |
| Experiments on side steering tube springs to prevent high-speed wobbles. | 27th Apr 1928 | Box 154 \ 3 scan0065 | |
| Letter from the Springfield, MA office to Derby, UK discussing issues with a 'grunting' steering column thrust bearing and proposing a new design. | 25th May 1928 | Box 154 \ 3 scan0066 | |
| Blueprint showing a cross-section of a Steering Column Thrust Bearing. | 25th May 1928 | Box 154 \ 3 scan0067 | |
| Steering issues, particularly wobbles and the use of softer springs. | 12th Jul 1928 | Box 154 \ 3 scan0068 | |
| Modifications to the pendulum lever and wheel offset for easier parking and improved handling. | 3rd Jan 1929 | Box 154 \ 3 scan0069 | |
| Experiments on side steering tubes to address issues with steering wander, stiffness and joggles. | 3rd Jan 1929 | Box 154 \ 3 scan0070 | |
| Spring stiffness and the fitting of new tubes and oil pipes to specific chassis. | 19th Apr 1929 | Box 154 \ 3 scan0071 | |
| RRAI steering controls, forwarding a letter from Mr. Olley for review. | 19th Apr 1929 | Box 154 \ 3 scan0072 | |
| New steering column controls, lighting controls, and the placement of controls on the instrument board. | 25th Mar 1929 | Box 154 \ 3 scan0073 | |
| Page discussing criticisms and proposed changes to spark control, carburation control, and shutter systems. | 25th Mar 1929 | Box 154 \ 3 scan0074 | |
| The final page of a letter from Rolls-Royce of America, Inc. discussing car handling in winter related to a shutter. | 20th Jun 1929 | Box 154 \ 3 scan0075 | |
| Chassis alteration number 12, discussing the stiffness of side steering tube springs and the 9' pendulum lever. | 20th Jun 1929 | Box 154 \ 3 scan0076 | |
| Inquiry to The Lavine Gear Co. about a new type of steering gear advertised in 'Automotive Industries'. | 8th Sep 1934 | Box 154 \ 3 scan0077 | |
| Letter from Lavine Gear Company acknowledging an inquiry for steering gear and referring to their London representative. | 26th Sep 1934 | Box 154 \ 3 scan0078 | |
| Information sheet blueprint for Lavine Gear Co. Models A & AA steering gears. | 24th Apr 1935 | Box 154 \ 3 scan0079 | |
| Article from 'Automotive Industries' on an improved 'Nut and Lever' steering gear by Lavine. | 9th Jun 1934 | Box 154 \ 3 scan0080 | |
| Page detailing new developments in automotive parts, accessories, and production tools from a trade publication. | 9th Jun 1934 | Box 154 \ 3 scan0081 | |
| Letter from Automotive Products Company regarding specifications and options for Lavine Steering Gears. | 6th Oct 1934 | Box 154 \ 3 scan0082 | |
| Continuation page of a letter from Automotive Products Company Limited regarding a sectioned model. | 1st Oct 1934 | Box 154 \ 3 scan0083 | |
| Information sheet and blueprint for Lavine Gear Co. Models A & AA gears. | 1st Oct 1934 | Box 154 \ 3 scan0084 | |
| Letter to The Automotive Products Company deferring tests on Lavine Steering Gears due to reported defects. | 15th Oct 1934 | Box 154 \ 3 scan0085 | |
| Letter from Automotive Products Company Ltd. regarding an issue with Lavine steering gears. | 17th Oct 1934 | Box 154 \ 3 scan0086 | |
| Letter from Automotive Products Company regarding technical feedback on the Lavine Steering Gear. | 19th Nov 1934 | Box 154 \ 3 scan0087 | |
| Concluding page of a letter from Automotive Products Company Ltd. discussing competitive pricing and offering co-operation. | 19th Nov 1934 | Box 154 \ 3 scan0088 | |
| Extract detailing alterations to the petrol tank for the American model. | 27th Sep 1919 | Box 154 \ 3 scan0089 | |
| Introduction of a new 20-gallon petrol tank for the American market. | 9th Sep 1919 | Box 154 \ 3 scan0090 | |
| Notes on a scheme for an American Petrol Tank featuring a two-gallon reserve fuel system. | 24th Oct 1919 | Box 154 \ 3 scan0091 | |
| The decision on manufacturing chassis for the American market. | 31th Oct 1919 | Box 154 \ 3 scan0092 | |
| Design challenges and solutions for a petrol gauge and filler on a luggage carrier. | 28th Jan 1920 | Box 154 \ 3 scan0093 | |
| Modifying the carburettor's flat feed chamber to include a filter for a new back tank, referencing the 'Condor' design. | 28th Jan 1920 | Box 154 \ 3 scan0094 | |
| From Oy. to Da. regarding drawings for a petrol level gauge and modified tank that are awaited for standardisation. | 7th Feb 1920 | Box 154 \ 3 scan0095 | |
| Potential improvements and part standardisation for American-built cars. | 15th Feb 1920 | Box 154 \ 3 scan0096 | |
| Corrosion issues with petrol filters and tanks due to acids in the fuel, and a proposed new design. | 1st Jun 1920 | Box 154 \ 3 scan0097 | |
| Suggestion to incorporate an old style inverted conical petrol filter onto American and imported chassis. | 1st Jun 1920 | Box 154 \ 3 scan0098 | |
| Development of a special petrol tank with new features for the American market. | 29th Jun 1920 | Box 154 \ 3 scan0099 | |
| Copy of a cablegram regarding the adoption of petrol tanks, and status of shock absorbers and spring experiments. | 1st Jul 1920 | Box 154 \ 3 scan0100 | |
| Cablegram from Claude Johnson detailing decisions on the starter motor, petrol tank, dynamo, and magneto for the Springfield chassis. | 6th Aug 1920 | Box 154 \ 3 scan0101 | |
| Standardizing Monel Metal gauze for petrol filters and coordinating the change with the U.S.A. division. | 1st Aug 1920 | Box 154 \ 3 scan0102 | |
| Extract discussing the design and production of a petrol tank in communication with America. | 27th Aug 1920 | Box 154 \ 3 scan0103 | |
| Modifications to the double level device side filler and petrol gauge. | 28th Aug 1920 | Box 154 \ 3 scan0104 | |
| Slow petrol tank filling caused by a Monel metal filter gauze and a proposed solution. | 4th Mar 1921 | Box 154 \ 3 scan0105 | |
| Use and potential omission of fuel inlet filters, comparing practices and proposing tests. | 4th Apr 1921 | Box 154 \ 3 scan0106 | |
| Instruction sheet detailing timings for filling petrol tanks under different conditions. | 4th Apr 1921 | Box 154 \ 3 scan0107 | |
| Issues with filling petrol tanks in the USA due to monel metal gauze and the proposed solution. | 4th Apr 1921 | Box 154 \ 3 scan0108 | |
| On petrol tank filling difficulties, comparing filling times for an 18-gallon tank using different filter gauzes and methods. | 13th Apr 1921 | Box 154 \ 3 scan0109 | |
| Extract detailing proposed alterations to a petrol tank to improve filling speed and level indicator visibility. | 3rd Jun 1921 | Box 154 \ 3 scan0110 | |
| Difficulty of filling the petrol tank on the 4.EX car and a proposed new design. | 6th Jun 1921 | Box 154 \ 3 scan0111 | |
| Petrol tank design, including vent pipes, fillers, and petrol level indicators. | 1st Jun 1921 | Box 154 \ 3 scan0112 | |
| The design and performance of various fuel gauges and a petrol filter. | 8th Jun 1921 | Box 154 \ 3 scan0113 | |
| Continued memorandum discussing a tank fitting and the potential abandonment of a hand-hole. | 28th Jun 1921 | Box 154 \ 3 scan0114 | |
| Technical memo discussing the gas tank filler position and reserve compartment on model 4.EX. | 19th Jul 1921 | Box 154 \ 3 scan0115 | |
| The design, function, and fixing of indicators and petrol filters. | 11th Aug 1920 | Box 154 \ 3 scan0116 | |
| Letter from M. Olley of Rolls Royce of America Inc. discussing the design of a complex filler cap for tanks. | 10th Dec 1920 | Box 154 \ 3 scan0117 | |
| Extract concerning alterations to the frame, dashboard drilling, and cross members for the American Model. | 27th Sep 1919 | Box 154 \ 3 scan0118 | |
| Policy decision on chassis production for the American market. | 31th Oct 1919 | Box 154 \ 3 scan0119 | |
| Extract detailing modifications to the electric starter and the lengthening of the chassis. | 6th Dec 1919 | Box 154 \ 3 scan0120 | |
| Incorporation of Left Hand Steering on the American chassis and other design changes. | 10th Dec 1919 | Box 154 \ 3 scan0121 | |
| American Print No. F-442 for the Rear Gear box Cross-member. | 19th Jun 1925 | Box 154 \ 3 scan0122 | |
| Letter from the American to the UK branch discussing the development and adoption of a new body subframe. | 19th Oct 1925 | Box 154 \ 3 scan0123 | |
| Proposed modifications to the car body, dash, and sub-frame. | 19th Oct 1925 | Box 154 \ 3 scan0124 | |
| Success and concerns regarding a body subframe, including a planned 10,000-mile endurance test. | 29th Oct 1925 | Box 154 \ 3 scan0125 | |
| Letter detailing an early test on a Phantom to cure axle tramping and steering wobble by stiffening the frame. | 11th Jun 1928 | Box 154 \ 3 scan0126 | |
| Relationship between component mounting, torsional stiffness, and preventing axle shimmy. | 5th Dec 1935 | Box 154 \ 3 scan0127 | |
| Modifications to the La Salle steering system for the Phantom III model, including raising the steering box and changing the pendulum lever. | 5th Dec 1935 | Box 154 \ 3 scan0128 | |
| Comparison table of steering system specifications for various models and configurations. | 2nd Feb 1936 | Box 154 \ 3 scan0129 | |
| Internal memorandum discussing the breakdown of chassis parts standardisation and a proposal for a new testing regime with assigned specialists. | 2nd Feb 1936 | Box 154 \ 3 scan0130 | |
| Policy of using specialists for car development, testing, and experimental work. | 2nd Feb 1936 | Box 154 \ 3 scan0131 | |
| List of standardisation sheets for the Bentley Chassis detailing changes completed in January. | 4th Feb 1936 | Box 154 \ 3 scan0132 | |
| List of standardisation sheets in circulation for various vehicle components. | 4th Feb 1936 | Box 154 \ 3 scan0133 | |
| List of modifications and parts not yet fitted to the 20/25 HP production chassis. | 4th Feb 1936 | Box 154 \ 3 scan0134 | |
| Request to remove a roller follower from the rockershaft of a La Salle gear for examination. | 15th Oct 1936 | Box 154 \ 3 scan0135 | |
| Laboratory analysis of the material composition of a broken steering wheel. | 11th Jul 1922 | Box 154 \ 3 scan0136 | |
| The static load and torque testing of a Dover Ltd. steering wheel for the Goshawk II experimental chassis. | 11th Jul 1922 | Box 154 \ 3 scan0137 | |
| Continuation page of a report on a comparative test of a 40/50 HP wheel. | 30th Oct 1922 | Box 154 \ 3 scan0138 | |
| Request for a report on the 40 HP Dover Steering Wheel regarding complicating negotiations with Messrs. Firth. | 30th Oct 1922 | Box 154 \ 3 scan0139 | |
| Gentle reminder requesting a report on the 40/50 HP Dover Steering Wheel. | 8th Nov 1922 | Box 154 \ 3 scan0140 | |
| Decision memo stating the Dover steering wheel is unsatisfactory for the 40/50 chassis. | 9th Nov 1922 | Box 154 \ 3 scan0141 | |
| Manufacturing process and sourcing of steering wheels for E.A.C. cars. | 13th Nov 1923 | Box 154 \ 3 scan0142 | |
| Comparing quotes from various suppliers for the manufacture and covering of steering wheels. | 14th Feb 1923 | Box 154 \ 3 scan0143 | |
| Tests to reduce steering wheel shocks on the 6-EX car by adding weight to the rim. | 2nd Jun 1923 | Box 154 \ 3 scan0144 | |
| Cracking Dover steering wheels on 20 HP chassis, and a plan to test a renovated wheel from chassis 45-G-6. | 2nd Jan 1924 | Box 154 \ 3 scan0145 | |
| Criticism of the Dover Steering Wheel and a plan to source an I.R.G.P. wheel as an alternative. | 1st Jan 1924 | Box 154 \ 3 scan0146 | |
| Orders, supply, and testing of steering wheels for 'T' and 'U' series vehicles. | 25th Mar 1924 | Box 154 \ 3 scan0147 | |
| Standardising steering wheels for the 40/50 chassis, detailing issues with the Dover wheel and plans for a new sample. | 26th Mar 1924 | Box 154 \ 3 scan0148 | |
| Recurring cracks in Dover Steering Wheels on the 20 HP Chassis and a request to test a renovated wheel. | 26th Apr 1924 | Box 154 \ 3 scan0149 | |
| Follow-up memo requesting an update on the examination of a patent steering wheel received from Italy. | 8th Mar 1926 | Box 154 \ 3 scan0150 | |
| Confirming a conversation about an unsuitable special steering wheel covered in soft rubber for a 40/50 HP model. | 10th Mar 1926 | Box 154 \ 3 scan0151 | |
| The dispatch of a steering wheel sent in for examination. | 12th Mar 1926 | Box 154 \ 3 scan0152 | |
| Reviewing and rejecting a sample rubber-covered steering wheel from an Italian supplier. | 15th Mar 1926 | Box 154 \ 3 scan0153 | |
| Letter regarding the procurement of a 'Rougier' flexible steering wheel for experimental purposes. | 20th Nov 1926 | Box 154 \ 3 scan0154 | |
| New spring steering wheel with finger impressions proposed by Bluemels. | 22th Aug 1927 | Box 154 \ 3 scan0155 | |
| Requesting to borrow a La Salle steering wheel from General Motors for inspection. | 22th Nov 1927 | Box 154 \ 3 scan0156 | |
| Acquisition of a La Salle steering wheel from General Motors. | 25th Nov 1927 | Box 154 \ 3 scan0157 | |
| Optimal size and position of the Phantom steering wheel for driver comfort. | 5th Mar 1928 | Box 154 \ 3 scan0158 | |
| Request by Mr. A.C. Lovesey to purchase a tested spring-spoke steering wheel. | 12th Apr 1928 | Box 154 \ 3 scan0159 | |
| Suggesting a price of 5 shillings for a scrap wheel that was about to be broken up. | 5th May 1928 | Box 154 \ 3 scan0160 | |
| New steering wheels with an increased diameter for the 20 HP, 40/50, Phantom, and India models. | 30th Aug 1928 | Box 154 \ 3 scan0161 | |
| Extract from a communication about a sample S.S. Steering Wheel. | 23th Nov 1928 | Box 154 \ 3 scan0162 | |
| Extract from a letter regarding the manufacturing process for a wheel rim's moulded Exonite covering. | 22th Nov 1928 | Box 154 \ 3 scan0163 | |
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