| Description | Date | Identifier | |
| Design and materials for a damper flywheel, focusing on friction surfaces and vibration. | 9th Mar 1928 | West Wittering \ R \ January1928-March1928 126 | |
| Insufficient dynamo output for 20HP & 40/50 models and proposed solutions. | 9th Mar 1928 | West Wittering \ R \ January1928-March1928 127 | |
| Design options for an 'SS' propeller shaft, referencing schematics and various manufacturing preferences. | 10th Mar 1928 | West Wittering \ R \ January1928-March1928 128 | |
| Adaption of a Phantom carburetter to an EAC.10 induction pipe. | 10th Mar 1928 | West Wittering \ R \ January1928-March1928 129 | |
| The final revision of a thrust bearing for an 'SS' 1' offset hypoid pinion. | 10th Mar 1928 | West Wittering \ R \ January1928-March1928 130 | |
| Design improvements for the rear brake compensating shaft. | 16th Mar 1928 | West Wittering \ R \ January1928-March1928 131 | |
| Hand-drawn cross-sectional diagram of a lever and servo mechanism. | 13th Mar 1928 | West Wittering \ R \ January1928-March1928 132 | |
| Centralised chassis lubrication for the Phantom's front axle control damper. | 13th Mar 1928 | West Wittering \ R \ January1928-March1928 133 | |
| Issues with the Phantom's spare wheel carrier, including frame flexing and potential design revisions. | 13th Mar 1928 | West Wittering \ R \ January1928-March1928 134 | |
| Alterations to design with a focus on reusing existing parts to minimize costs. | 13th Mar 1928 | West Wittering \ R \ January1928-March1928 135 | |
| Strategy and development of the 15-EX Sports Model, including engine, chassis, and bodywork considerations. | 5th Mar 1928 | West Wittering \ R \ January1928-March1928 136 | |
| Chassis flexibility and steering column issues, with suggestions for a sports car design for the Olympia show. | 15th Mar 1928 | West Wittering \ R \ January1928-March1928 137 | |
| Development strategy for the 15-EX Sports Model, covering engine/chassis improvements and body design. | 15th Mar 1928 | West Wittering \ R \ January1928-March1928 138 | |
| Chassis flexibility, steering column support, and design suggestions for a new sports car model. | 13th Jan 1928 | West Wittering \ R \ January1928-March1928 139 | |
| Hand-drawn design sketches with notes on stress and stiffness for a frame component. | 15th Mar 1928 | West Wittering \ R \ January1928-March1928 140 | |
| Four proposals for modifying an engine cylinder head for the India Chassis. | 15th Mar 1928 | West Wittering \ R \ January1928-March1928 141 | |
| Proposal for battery ignition wiring on EAC.10, referencing blueprint LeC. 2526 and the 20HP chassis. | 17th Mar 1928 | West Wittering \ R \ January1928-March1928 142 | |
| Centralised chassis lubrication schemes for the 'India 3' project, discussing drawings and alternative proposals. | 17th Mar 1928 | West Wittering \ R \ January1928-March1928 143 | |
| Alternative proposals for centralised chassis lubrication for the rear axle. | 17th Mar 1928 | West Wittering \ R \ January1928-March1928 144 | |
| Two schemes for modifying an exhaust pipe flange to improve tolerance for lineability. | 20th Mar 1928 | West Wittering \ R \ January1928-March1928 145 | |
| Design choices for the India 3 engine, focusing on the cylinder head, induction system, and carburettor. | 21th Mar 1928 | West Wittering \ R \ January1928-March1928 146 | |
| Attached drawings for the India 3 engine suspension. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 147 | |
| Attached drawing LeC. 2532 for an exhaust pipe flange. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 148 | |
| The provision for a thermometer bulb in a cylinder head, referencing blueprint LeC. 2533. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 149 | |
| Referencing an attached drawing for a cylinder head thermometer. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 150 | |
| Disassembly and suggested modification of a frame cross component. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 151 | |
| The design of a rubber block engine suspension for the India 3 / 20HP chassis, comparing alternative designs. | 22th Mar 1928 | West Wittering \ R \ January1928-March1928 152 | |
| Letter suggesting three different body designs for the EAC.10 'SS' chassis. | 23th Mar 1928 | West Wittering \ R \ January1928-March1928 153 | |
| Future car design improvements regarding body dimensions, rubber mounting, lighting, and instrument grouping. | 23th Mar 1928 | West Wittering \ R \ January1928-March1928 154 | |
| Design specifications and maintenance requirements for car batteries, with handwritten annotations. | 23th Mar 1928 | West Wittering \ R \ January1928-March1928 155 | |
| Design of exhaust and inlet valve guides for the Phantom Aluminium Head. | 23th Mar 1928 | West Wittering \ R \ January1928-March1928 156 | |
| Balance of a twin 5-cylinder engine, with comparisons to 10 and 6-cylinder engines. | 24th Mar 1928 | West Wittering \ R \ January1928-March1928 157 | |
| Modification to the induction pipe and cylinder head water jacket. | 24th Mar 1928 | West Wittering \ R \ January1928-March1928 158 | |
| Drawing of an inlet pipe for the EAC.10 cylinder head and a proposed modification. | 24th Mar 1928 | West Wittering \ R \ January1928-March1928 159 | |
| The dispatch of drawing LeC. 2528 for battery ignition wiring and awaiting feedback. | 24th Mar 1928 | West Wittering \ R \ January1928-March1928 160 | |
| Design of a bolted exhaust pipe joint with spherical seats for the 'SS' engine. | 28th Mar 1928 | West Wittering \ R \ January1928-March1928 161 | |
| Steering performance and potential improvements for 20HP and 45HP models. | 25th Mar 1928 | West Wittering \ R \ January1928-March1928 162 | |
| Prioritising the India 3 chassis over the EAC. 10, detailing improvements from a 10,000-mile test. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 163 | |
| Responding to a request, outlining plans for providing drawings of various vehicle components. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 164 | |
| Outstanding design considerations for an exhaust, radiator, suspension, and front axle. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 165 | |
| Proposed semi-isolation scheme for the scuttle, requesting more detail before approval for Phantom production. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 166 | |
| Proposal and advantages of creating a new front axle forging for the 'SS' model. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 167 | |
| 'SS' Side Steering Tube, referencing drawing N. sch. 2567. | 26th Mar 1928 | West Wittering \ R \ January1928-March1928 168 | |
| Approval memo regarding 'SS' Battery Ignition Wiring diagram LeC. 2526. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 169 | |
| Using magnesium for pistons to save weight in 6-cylinder car engines, comparing a German design. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 170 | |
| Approving modifications to the 'SS' carburetter and induction bend water jacket based on blueprint LeC. 2527. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 171 | |
| Progressive vehicle development, performance improvements, and addressing design complexities in response to competitors. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 172 | |
| Use of a friction damper to resolve scuttle and dashboard issues on various car models. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 173 | |
| Weak forward body support springs and a request for modification on the Barker car. | 27th Mar 1928 | West Wittering \ R \ January1928-March1928 174 | |
| Reviewing and outlining experiments for the Phantom steering system, focusing on a new .900 large worm and damping friction. | 2nd Apr 1928 | West Wittering \ R \ January1928-March1928 175 | |
| Improvements to steering systems, axle flexibility, and weight distribution. | 31th Mar 1928 | West Wittering \ R \ January1928-March1928 176 | |
| Design and lubrication of the India 3 adjustable carrier wheel. | 31th Mar 1928 | West Wittering \ R \ January1928-March1928 177 | |
| Sending proposals for various components for the rear end of a frame. | 31th Mar 1928 | West Wittering \ R \ January1928-March1928 178 | |
| Requesting alterations to the Sports Phantom crankchamber specifications. | 1st Oct 1927 | West Wittering \ R \ October1927-December1927 Scan001 | |
| Proposal for narrower wire wheels for the Phantom, involving the modification of artillery wheel hubs. | 1st Oct 1927 | West Wittering \ R \ October1927-December1927 Scan002 | |
| Design and manufacturing of suspension springs, referencing Mr. Olley's notes and a proposal to use Firth's for production. | 3rd Oct 1927 | West Wittering \ R \ October1927-December1927 Scan003 | |
| Machining operations for a Sports Phantom 'Y' alloy piston. | 4th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan004 | |
| Sending drawing Lec. 2468 concerning the Phantom Sports oil pump and drive. | 5th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan005 | |
| List of proposed modifications for the Phantom Sports model after a 10,000-mile test in France. | 5th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan006 | |
| List of proposed modifications categorized as 'Highly Desirable' and 'Non-Controversial'. | 5th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan007 | |
| List of desirable improvements and technical notes for a vehicle, page 3. | 10th May 1927 | West Wittering \ R \ October1927-December1927 Scan008 | |
| Battery charge reduction, weight saving, and a proposed automatic cut-off system. | 10th May 1927 | West Wittering \ R \ October1927-December1927 Scan009 | |
| Suggestion to use bakelite for a switchbox. | 6th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan010 | |
| Suggestion to supply the spare wheel carrier and luggage grid as a complete unit. | 6th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan011 | |
| Replacing a suggestion for a duralumin rear axle brake bracket with using an entire EAC rear brake. | 6th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan012 | |
| Reminder requesting detailed comparative weights for the EAC. 7 and 40/50 back axles. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan013 | |
| Phone message confirmation regarding changes to a sports car build due to a broken crank-chamber. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan014 | |
| Confirmation of despatch for a model Enots lubrication system to Benton & Stone Ltd. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan015 | |
| Modifications to the Sports Phantom wheelcase and gears. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan016 | |
| Drawing LeC. 2471 for the Sports Phantom oil strainer and crankchamber. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan017 | |
| Proposal for narrower wire wheels for the 20HP chassis, detailing alterations to the hub design. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan018 | |
| Proposals for lightening the propeller shaft and testing new thrust bearings on the Phantom model. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan019 | |
| Revisions to the rear brake gear for the Phantom Sports model, referencing schematic 2472. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan020 | |
| Improvements and testing plans for the Sports Phantom and the next 10,000 miles car. | 8th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan021 | |
| Modifications to the slipper flywheel for the Sports Phantom model. | 10th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan022 | |
| Design challenges and commercial considerations of a rear spare wheel carrier versus a combined carrier and luggage grid. | 11th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan023 | |
| Modifications to the Sports Phantom's oil level indicator and lower half crankcase. | 11th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan024 | |
| Considerations for fitting larger batteries for theatre and parking use, with suggestions on lighting and charging systems. | 11th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan025 | |
| Proposed modifications to the rear axle centre casing and differential cage. | 10th Dec 1927 | West Wittering \ R \ October1927-December1927 Scan026 | |
| Features for the first car of the Sports Phantom series. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan027 | |
| Modification to the rear spring centre trunnion bolt for brake rope clearance. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan028 | |
| Change in the tilt angle for the Sports Phantom magneto bracket. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan029 | |
| Requesting feedback on a modified 20HP spare wheel carrier for the Phantom rear wheel carrier design. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan030 | |
| Adaptation of centralised lubrication for the rear axle, along with modifications for shock and squeak dampers. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan031 | |
| Modification to the oil gallery pipe for the Sports Phantom crankchamber. | 13th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan032 | |
| Planned improvements and modifications for a sports car. | 17th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan033 | |
| Purchase of competitor vehicles for trial and analysis. | 17th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan034 | |
| Method for clipping a pipe for the centralised chassis lubrication system to the front springs. | 18th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan035 | |
| Modified design for a Sports Phantom Piston. | 18th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan036 | |
| The design of a solid torque tube, specifically its diameter and thickness. | 18th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan037 | |
| Suggestion to test an improved horizontal S.U. carburetter on the 20HP model. | 19th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan038 | |
| Issues with a sample Watford clock, including starting problems and intermittent stopping. | 19th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan039 | |
| Requesting an updated chassis print for a Sports Phantom with a list of special features. | 19th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan040 | |
| Continuation of a letter listing components and discussing the branding of the chassis. | 19th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan041 | |
| Modifications to the Sports Phantom crankchamber for the sports chassis. | 19th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan042 | |
| Chassis modifications for the Sports Phantom model. | 20th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan043 | |
| Benefits of mounting car bodies on four points with rubber seatings to reduce vibrations and road shocks. | 20th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan044 | |
| New scheme for dipping headlamps, including wiring, support, and potential patenting. | 20th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan045 | |
| Delays in standardizing battery ignition tungsten points. | 20th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan046 | |
| Issues with a noisy sequence starter gear and suggesting alternative manufacturing processes. | 20th Oct 1927 | West Wittering \ R \ October1927-December1927 Scan047 | |
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