| Description | Date | Identifier | |
| Future discussion about springing and ride control to be held in Derby. | 14th May 1934 | Box 17 \ 1 Scan117 | |
| Application of an anti-roll torsion rod for ride control, including a schematic diagram of the mechanism. | 15th May 1934 | Box 17 \ 1 Scan118 | |
| Required chassis modifications for the 20/25 HP, Phantom, and Spectre models. | 15th May 1934 | Box 17 \ 1 Scan119 | |
| Improvements in springing and ride control, agreeing to take advantage of it and arranging a car for trial. | 16th May 1934 | Box 17 \ 1 Scan120 | |
| On hotel letterhead regarding an encounter with a customer and a road test. | 16th May 1934 | Box 17 \ 1 Scan121 | |
| Describing a vehicle's poor ride quality, specifically the pitching and the damping system. | 16th May 1934 | Box 17 \ 1 Scan122 | |
| Letter on hotel-headed notepaper detailing a vehicle inspection. | 16th May 1934 | Box 17 \ 1 Scan123 | |
| Modifications and a road test of a car, including governor adjustments and damper checks. | 9th Oct 1937 | Box 17 \ 1 Scan124 | |
| Car's handling, discussing the anti-roll rod, damping, and customer complaints of sea sickness and rolling. | 9th Oct 1937 | Box 17 \ 1 Scan125 | |
| Note discussing a customer's car, its use as a town carriage, and the potential need for stiffer road springs. | 9th Oct 1937 | Box 17 \ 1 Scan126 | |
| Customer feedback regarding vehicle suspension and a comparison with an Austin 20 HP | 9th Oct 1937 | Box 17 \ 1 Scan127 | |
| Memo outlining a plan of action for a customer's car regarding the replacement of the rear springs. | 9th Oct 1937 | Box 17 \ 1 Scan128 | |
| Letter on hotel stationery about the urgency of satisfying a customer, Mrs Burgess, to prevent reputational damage. | 23th May 1934 | Box 17 \ 1 Scan129 | |
| Customer complaint regarding incorrect low-rated springs and a proposal to change the policy for fitting springs to owner-driven cars. | 23th May 1934 | Box 17 \ 1 Scan130 | |
| Springing complaint on car 39-RY and recommending spring setup changes. | 25th May 1934 | Box 17 \ 1 Scan131 | |
| Follow-up letter regarding a customer complaint about vehicle springing on chassis 27-RY. | 25th May 1934 | Box 17 \ 1 Scan132 | |
| Suitability of low rated springs for the 40/50 HP chassis following a customer complaint. | 30th May 1934 | Box 17 \ 1 Scan133 | |
| Customer's complaint regarding car springing issues and the subsequent modifications. | 31th May 1934 | Box 17 \ 1 Scan134 | |
| Short typed message to Burgess in Bristol regarding the return of a car. | 17th May 1934 | Box 17 \ 1 Scan135 | |
| Performance of low-rated springs and shock absorbers for the 40/50 HP chassis. | 5th Jun 1934 | Box 17 \ 1 Scan136 | |
| Letter to a customer suggesting alterations to improve the ride of her car, including new springing and seat cushions. | 13th Jun 1934 | Box 17 \ 1 Scan137 | |
| Letter to Mr Leslie about testing a car during a trip to London for Ascot week. | 16th Jun 1934 | Box 17 \ 1 Scan138 | |
| Modifications and issues with a customer's car, chassis 27-RY. | 26th Jun 1934 | Box 17 \ 1 Scan139 | |
| Telegram informing the Experimental Department of a car being sent to Derby. | 26th Jun 1934 | Box 17 \ 1 Scan140 | |
| Letter discussing arrangements for a customer to try different seat cushions for their car to ensure comfort. | 12th Jul 1934 | Box 17 \ 1 Scan141 | |
| Letter fragment discussing the cost of a cushion and the car's suspension. | 12th Jul 1934 | Box 17 \ 1 Scan142 | |
| Customer requirements for chassis 2-PY (Stubbs), car suspension issues, and improvements to governor units. | 12th Jul 1934 | Box 17 \ 1 Scan143 | |
| The trial of a solid latex rear seat cushion for a customer. | 13th Jul 1934 | Box 17 \ 1 Scan144 | |
| Complaint letter about a car's handling, described as being like a 'switchback'. | 13th Aug 1934 | Box 17 \ 1 Scan145 | |
| Letter to a customer regarding car comfort issues and potential remedies. | 31th Aug 1934 | Box 17 \ 1 Scan146 | |
| Complaint from Mrs. F.C. Burgess about car 27-RY, detailing arrangements for repairs and a loan car. | 26th Sep 1934 | Box 17 \ 1 Scan147 | |
| Complaint case memo detailing communications regarding a loan car for Mr. F.O. Burgess, chassis 27-MX. | 25th Sep 1934 | Box 17 \ 1 Scan148 | |
| Table documenting changes to the road spring periodicities for Burgess' Car 27 R.Y. | 27th Sep 1934 | Box 17 \ 1 Scan149 | |
| Alterations for the independent suspension on the 27-EX model. | 27th Sep 1934 | Box 17 \ 1 Scan150 | |
| Requesting an update on a complaint case for F.C. Burgess - 27-RY. | 2nd Oct 1934 | Box 17 \ 1 Scan151 | |
| The resolution of a springing complaint for car 27-RY by adjusting shock damping. | 6th Oct 1934 | Box 17 \ 1 Scan152 | |
| Complaint case report regarding car springing and subsequent modifications for car 27-RY. | 8th Oct 1934 | Box 17 \ 1 Scan153 | |
| Customer letter inquiring about a possible wheel change by mistake and a noisy front shock absorber. | 16th Oct 1934 | Box 17 \ 1 Scan154 | |
| Letter signed by V. Farrow regarding taking a car out for the first time. | 23th Oct 1934 | Box 17 \ 1 Scan155 | |
| Wheel discs and a noisy shock damper on Mr. Burgess' car, 27-RY. | 23th Oct 1934 | Box 17 \ 1 Scan156 | |
| The arrangement of the starting handle gear on the SS engine, referencing drawing N.sch. 2684. | 1st Sep 1928 | Box 17 \ 2 Scan001 | |
| Methods for the starting handle shaft tunnel through 'SS' radiators, noting Mr. Royce's preferred option. | 9th Sep 1928 | Box 17 \ 2 Scan002 | |
| The failure of starting handle E.78308, noting sheared pins and suggesting the spindle be plated rather than painted. | 29th Nov 1928 | Box 17 \ 2 Scan003 | |
| Insufficient clearance for the starting handle through the radiator, requesting an increase in space on production cars. | 13th Sep 1929 | Box 17 \ 2 Scan004 | |
| Potential ignition timing issue with the Low Inertia Spring Drive on the Phantom II. | 2nd Oct 1929 | Box 17 \ 2 Scan005 | |
| Outlining desired features for a car after a 10,000-mile test, including under-bonnet tool storage, a reverse light, and standard bumpers. | 23th Dec 1929 | Box 17 \ 2 Scan006 | |
| The 10,000 miles test, specifically the rear light switch, starting handle, and bumpers. | 31th Dec 1929 | Box 17 \ 2 Scan007 | |
| Modification proposals for the starting handle, including different carrying and storage options. | 6th Jun 1930 | Box 17 \ 2 Scan008 | |
| Standardisation of a starting handle with a shaft left in position on the car. | 24th Jul 1930 | Box 17 \ 2 Scan009 | |
| Problem and suggested modification for the starting handle bracket covers on 20/25 and Phantom II models. | 27th Mar 1934 | Box 17 \ 2 Scan010 | |
| Drawings for a modified hollow dashboard and steering adaptations for a chassis. | 1st Oct 1925 | Box 17 \ 3 Scan001 | |
| Introduction of a stepped dashboard to improve steering column support and its effect on scuttle room. | 11th Nov 1925 | Box 17 \ 3 Scan002 | |
| Observations on car body design, seating arrangements, tyres, and suspension. | 11th Nov 1925 | Box 17 \ 3 Scan003 | |
| Use of balloon and ordinary tyres on the 20 HP and Phantom models. | 25th Nov 1925 | Box 17 \ 3 Scan004 | |
| New lighter front axle and steering arrangements for the Phantom model. | 25th Nov 1925 | Box 17 \ 3 Scan005 | |
| The arrangement of the steering column in the frame and future modifications. | 27th Nov 1925 | Box 17 \ 3 Scan006 | |
| Modifications to the steering box and rocker shaft. | 1st Dec 1925 | Box 17 \ 3 Scan007 | |
| Modifications to the front axle, steering levers, and associated components, including changes to bolt sizes. | 19th Dec 1925 | Box 17 \ 3 Scan008 | |
| Dispatch of a front axle drawing (N.sch.2102) with details on steering connections and clearances. | 19th Dec 1925 | Box 17 \ 3 Scan009 | |
| Modifications required to adapt the dashboard for 'C' and 'D' type steering. | 8th Jan 1926 | Box 17 \ 3 Scan010 | |
| Modifications to the dashboard casting for 'C' & 'D' type steering columns. | 22th Jan 1926 | Box 17 \ 3 Scan011 | |
| Revised steering position drawing N.sch. 2126 for a steering box with a large worm. | 22th Jan 1926 | Box 17 \ 3 Scan012 | |
| Minimum alterations required for the dashboard to accommodate a large worm box. | 22th Jan 1926 | Box 17 \ 3 Scan013 | |
| Alternative arrangements for a damped pendulum lever, awaiting final approval from Mr. Royce. | 26th Jan 1926 | Box 17 \ 3 Scan014 | |
| Modifications for the EAC.7 dashboard and steering support due to differences from the EAC.8 model. | 2nd Jun 1926 | Box 17 \ 3 Scan015 | |
| Design of a stepped cast dashboard and modifications to the steering column support. | 10th Jun 1926 | Box 17 \ 3 Scan016 | |
| Improvements to the steering on model EAC.8 using a lighter front axle. | 10th Jun 1926 | Box 17 \ 3 Scan017 | |
| Proposed modifications to the steering column stay on an EAC. 8 chassis cast dash. | 12th Jun 1926 | Box 17 \ 3 Scan018 | |
| Requesting information on the body type for the first EAC.V11 chassis to proceed with steering design. | 17th Jun 1926 | Box 17 \ 3 Scan019 | |
| Improvements and required modifications for a prototype vehicle based on road testing. | 26th Jun 1926 | Box 17 \ 3 Scan020 | |
| Test drive report for car 12-EX detailing feedback on steering, automatic advance, engine vibration, and other components. | 22th Jul 1926 | Box 17 \ 3 Scan021 | |
| Steering wheel vibrations on the 12-EX car, proposing an experiment to address the issue. | 23th Jul 1926 | Box 17 \ 3 Scan022 | |
| The lightened front axle on the 12-EX car and a complaint investigation. | 12th Aug 1926 | Box 17 \ 3 Scan023 | |
| Investigation of steering troubles on the 12-EX car in France. | 1st Aug 1926 | Box 17 \ 3 Scan024 | |
| High-speed wobble and road shock tests for the 12 EX - EAC VIII, detailing axle and tyre performance. | 14th Aug 1926 | Box 17 \ 3 Scan025 | |
| Report comparing the effects of tyres, shock dampers, and steering settings on vehicle wobble. | 14th Aug 1926 | Box 17 \ 3 Scan026 | |
| Steering friction, with proposals for stronger front springs and adjustments to hydraulic dampers. | 14th Aug 1926 | Box 17 \ 3 Scan027 | |
| The effects of toe-in, friction on steering, and spring controlled steering movement. | 14th Aug 1926 | Box 17 \ 3 Scan028 | |
| Vehicle wobble intensity tests comparing different tyres and dampers. | 16th Aug 1926 | Box 17 \ 3 Scan029 | |
| Letter discussing the despatch of springs, modifications for the 12-EX axle, steering quality, and tyre recommendations. | 16th Aug 1926 | Box 17 \ 3 Scan030 | |
| Communication regarding traction tyres from Dunlops, steering compromises, and the dispatch of a friction device. | 18th Aug 1926 | Box 17 \ 3 Scan031 | |
| Request for a report about steering troubles on car reference HS1/LG13826. | 18th Aug 1926 | Box 17 \ 3 Scan032 | |
| Test on out of centre point steering and its effects on shocks and wobbles. | 18th Aug 1926 | Box 17 \ 3 Scan033 | |
| Steering wobble issues in the 12-EX car, tracing the cause to Dunlop balloon tyres. | 18th Aug 1926 | Box 17 \ 3 Scan034 | |
| Phantom steering issues, attributing the problem to balloon tyres and proposing a hydraulic damper solution. | 8th Aug 1925 | Box 17 \ 3 Scan035 | |
| Layout and modification of a side steering tube. | 3rd Nov 1925 | Box 17 \ 3 Scan036 | |
| Steering improvements for the EAC.S model, involving a lighter front axle, spring-loaded steering joints, and a different buffer spring. | 10th Jun 1926 | Box 17 \ 3 Scan037 | |
| Experimental information on steering and dampers for the 12-EX, exhaust cutouts for the 20 HP, and battery ignition points. | 19th Aug 1926 | Box 17 \ 3 Scan038 | |
| Central lubrication scheme for the New Phantom. | 20th Aug 1926 | Box 17 \ 3 Scan039 | |
| Completion of mileage for the 12-EX car and subsequent steering experiments in France. | 20th Aug 1926 | Box 17 \ 3 Scan040 | |
| Steering troubles on car 12-EX and a proposed solution of adding friction to the pivots. | 20th Aug 1926 | Box 17 \ 3 Scan041 | |
| Investigation into steering wobble issues on car EAC-V111, attributing them to Dunlop tyres and a new axle. | 20th Aug 1926 | Box 17 \ 3 Scan042 | |
| High-speed wobble issues, comparing different tyre types and the effect of dampers on steering performance. | 20th Aug 1926 | Box 17 \ 3 Scan043 | |
| Tests on steering friction, cross steering tubes, and hydraulic dampers to reduce high and low-speed wobbles. | 20th Aug 1926 | Box 17 \ 3 Scan044 | |
| Tests to improve high-speed steering control, reduce wobbles, and enhance ride comfort through load balancing and tyre selection. | 20th Aug 1926 | Box 17 \ 3 Scan045 | |
| Findings on steering, front springing, and the performance of a new axle with various wheels and tyres. | 20th Aug 1926 | Box 17 \ 3 Scan046 | |
| Steering and suspension improvements for the 12-EX car, with a plan for further tests. | 21th Aug 1926 | Box 17 \ 3 Scan047 | |
| Steering tests conducted in France on a new front axle and side steering tube springs. | 21th Aug 1926 | Box 17 \ 3 Scan048 | |
| Steering performance tests, analysing the effects of different spring strengths on road shock absorption and driver control. | 21th Aug 1926 | Box 17 \ 3 Scan049 | |
| New arrangement of a side steering tube with spring-based shock absorption. | 21th Aug 1926 | Box 17 \ 3 Scan050 | |
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