| Description | Date | Identifier | |
| Motor design calculations, torque requirements, and potential modifications. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 139 | |
| Proposal to produce and test a new motor armature for the Phantom engine to address issues with the existing Bosch motor. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 140 | |
| Query on the milling process for slots on a tapered armature. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 141 | |
| Calculations for the sequence starter motor required for a Phantom Engine with a 13:1 ratio. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 142 | |
| Page of calculations for an electrical component, possibly a motor or generator. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 143 | |
| Calculations for motor electrical resistance, including armature and field values at 20°C. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 144 | |
| Page of calculations for armature dimensions and copper wire specifications. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 145 | |
| Calculations for armature and field winding specifications of an electric motor. | 1st Jun 1927 | West Wittering \ Q \ 2April1927-June1927 146 | |
| Calculation table for the Ampere-turns required to produce a specific magnetic flux. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 147 | |
| Tests and a modification to prevent knocks in hydraulic shock dampers. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 148 | |
| The theory and testing of hydraulic damper valves, including the effect of an oil cushion. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 149 | |
| Analysis of hydraulic damper performance, discussing piston leakage, valve timing, cushioning, and axle loads. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 150 | |
| Report page detailing modifications to shock dampers and the methodology for testing their efficiency. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 151 | |
| Analysis of shock damper loading, discussing the effects of axle velocity, oil flow dynamics, and viscosity. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 152 | |
| Report page concluding tests on a damper, comparing its performance and suggesting future developments. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 153 | |
| Shock damper's performance, with a chronograph record from a 10,000-mile road test. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 154 | |
| Pressure/stroke diagram for a front shock absorber. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 155 | |
| Blank page with a purple ink stamp in the bottom right corner. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 156 | |
| Two graphs illustrating the effects of temperature, load, and piston velocity on high pressure valve opening. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 157 | |
| Graph plotting the effect of speed on maximum damper load at different temperatures. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 158 | |
| Series of graphs showing the effects of temperature, load, and stroke rate on damper and valve performance. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 159 | |
| Stamped blank cover sheet from the Print Room in Derby. | 2nd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 160 | |
| Standardization of the magneto ignition switch arrangement for the Phantom model. | 3rd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 161 | |
| The objections and potential improvements to ignition switch arrangements. | 3rd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 162 | |
| The design and testing of the switchbox, auto switch, and battery charging system. | 3rd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 163 | |
| Improving the electrical charging system, battery life, and dynamo performance. | 3rd Jun 1927 | West Wittering \ Q \ 2April1927-June1927 164 | |
| Technical note on the risk of dynamo failure with a disconnected battery. | 11th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 165 | |
| Various proposed combinations for testing the No.1 scheme sequence starter. | 11th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 166 | |
| Page discussing whether to proceed with trials of a scheme or cancel the proposal. | 11th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 167 | |
| The inspection and testing of a new sleeveless Watford magneto and an up-to-date Lucas ER6 magneto. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 168 | |
| Comparison of Lucas type ERS and Watford magneto modifications and specifications. | 1st Apr 1927 | West Wittering \ Q \ 2April1927-June1927 169 | |
| Comparison of distributor specifications and dimensions for Watford and Lucas components. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 170 | |
| Comparison table of relative distributor dimensions for Watford and Lucas models, with suggested new dimensions. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 171 | |
| Test report comparing the performance of Watford and Lucas magnetos under endurance, short circuit, and open circuit conditions. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 172 | |
| Comparative performance test report on Lucas and Watford magnetos, detailing open circuit and short circuit curves and a utility test with a shunted spark gap. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 173 | |
| Performance comparison of Watford and Lucas magnetos detailing their firing capabilities at various speeds and settings. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 174 | |
| Performance comparison between Watford and Lucas magnetos against general specification criteria. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 175 | |
| Comparison between the Watford sleeveless type magneto and the Lucas type ERS magneto. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 176 | |
| Report page discussing the performance and compliance of magnetos, specifically comparing Watford and Lucas models. | 11th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 177 | |
| Graph comparing Volt-Speed and Ampere-Speed curves for Watford and Lucas magnetos. | 11th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 178 | |
| Technical memorandum detailing investigations into high-speed wobbles and the effects of shock damper loading. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 179 | |
| Tests on vehicle wobble, focusing on the effects of engine mass, shock dampers, and frame rigidity. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 180 | |
| Comparison of high-speed wobble characteristics between an EAC. V11. and a Hispano vehicle. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 181 | |
| Causes and prevention of high-speed wheel wobble in vehicles. | 13th Jan 1927 | West Wittering \ Q \ 2April1927-June1927 182 | |
| Graph and diagrams comparing the torsional rigidity of the Hispano and E.A.C.7 chassis frames. | 13th Jan 1927 | West Wittering \ Q \ 2April1927-June1927 183 | |
| Carburetter starvation on the Phantom model due to petrol boiling in the Autovac feed system. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 184 | |
| Testing to resolve petrol starvation in the Autovac due to heat from the exhaust manifold, listing possible solutions. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 185 | |
| On the failure of the Autovac petrol feed system on Phantom cars and experiments to fix it with a larger diameter pipe. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 186 | |
| Petrol pipe tests conducted on a Standard Phantom engine, recommending the adoption of a larger pipe. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 187 | |
| Graph plotting the effect of petrol pipe size on Autovac petrol delivery against engine RPM at half throttle. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 188 | |
| Stamped document from the Print Room in Derby. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 189 | |
| Graph showing the effect of the size of a petrol pipe on Autovac delivery against engine RPM. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 190 | |
| Graph showing the effect of petrol supply pipe size on Autovac delivery against engine RPM. | 13th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 191 | |
| From the Derby Print Room with largely illegible text. | 14th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 192 | |
| Experimental testing of battery ignition contact points using a new drive rig. | 21th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 193 | |
| Revised calculations and suggestions for a scheme sequence starter motor. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 194 | |
| Armature dimensions, tapering, and air gaps related to grinding punched plates. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 195 | |
| Advantages of making armature slots parallel to improve the magnetic circuit. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 196 | |
| Calculations and specifications for a sequence starter motor for a Phantom engine. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 197 | |
| Page 2 of calculations for motor characteristics, including armature circumference, flux per pole, number of conductors, and back E.M.F. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 198 | |
| Page of calculations for motor resistance, armature, and slot area. | 22th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 199 | |
| Page of calculations for armature slot dimensions, conductor area, and space efficiency for a motor. | 31th Mar 1927 | West Wittering \ Q \ 2April1927-June1927 200 | |
| Calculations for electrical component dimensions, turns, and resistance. | 31th Mar 1927 | West Wittering \ Q \ 2April1927-June1927 201 | |
| Calculation table for the ampere-turns required to produce the necessary magnetic flux in a component. | 31th Mar 1927 | West Wittering \ Q \ 2April1927-June1927 202 | |
| Calculations and suggestions for pole windings, including cross-sectional area and turns. | 1st May 1927 | West Wittering \ Q \ 2April1927-June1927 203 | |
| Investigation into the failures experienced with the 20 HP starter motor. | 1st May 1927 | West Wittering \ Q \ 2April1927-June1927 204 | |
| Modifications to a pinion unit to improve centralisation and engagement, and an investigation into cork clutch slipping issues. | 1st May 1927 | West Wittering \ Q \ 2April1927-June1927 205 | |
| Analysis of starter motor engagement issues, focusing on pinion gear grinding, weak spring D.51133, and friction problems with cork discs. | 1st May 1927 | West Wittering \ Q \ 2April1927-June1927 206 | |
| Tests and improvements made to a starter motor unit by adjusting spring loads. | 29th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 207 | |
| Sketches illustrating issues with a starter motor pinion engagement mechanism. | 29th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 208 | |
| Issues and costs associated with fitting a No.1 scheme sequence starter to the EAC.7 chassis. | 30th Jun 1927 | West Wittering \ Q \ 2April1927-June1927 209 | |
| Development and analysis of the EAC.7 steering geometry, comparing it with Phantom and India models. | 1st Apr 1927 | West Wittering \ Q \ April1927-June1927 1 | |
| Confirming the commencement of detailing for Phantom bonnet locks following an agreement. | 1st Apr 1927 | West Wittering \ Q \ April1927-June1927 2 | |
| Requesting information to create a preliminary layout for a Phantom luggage box and wheel carrier. | 1st Apr 1927 | West Wittering \ Q \ April1927-June1927 3 | |
| Telegram confirmation detailing engine modifications required for an official test. | 1st Apr 1927 | West Wittering \ Q \ April1927-June1927 4 | |
| Bad steering geometry on 20HP cars and a proposal to re-test a side steering lever. | 4th Feb 1927 | West Wittering \ Q \ April1927-June1927 5 | |
| From 'R' discussing the quality of English coachwork, chassis stiffness, and tyre specifications for various models. | 4th Apr 1927 | West Wittering \ Q \ April1927-June1927 6 | |
| Modifications to the 20HP radiator and cast dash, drawing comparisons to the 40/50 model. | 8th Apr 1927 | West Wittering \ Q \ April1927-June1927 7 | |
| Design of road springs for 40/50 & 20HP chassis. | 5th Apr 1927 | West Wittering \ Q \ April1927-June1927 8 | |
| Decision to file radiator drawing N. sch. 2371 for reference. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 9 | |
| Design of brake squeak dampers for the 20HP and Phantom models. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 10 | |
| Experimental setup for a proposed returning spring on the steering worm tube. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 11 | |
| Outlining design specifications for new experimental radiators and bonnets, with a recommendation to remove shutters for sports cars. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 12 | |
| Modification to the servo linkage to increase brake rod force. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 13 | |
| Outlining two alternative steering scheme proposals for experimentation on Phantom models. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 14 | |
| Axle modification for hypoid gears, suggesting a reduction in the 'out of centre' dimension. | 11th Apr 1927 | West Wittering \ Q \ April1927-June1927 15 | |
| Problem of oil getting on the brakes from the Phantom front hubs and proposed solutions. | 7th Apr 1927 | West Wittering \ Q \ April1927-June1927 16 | |
| Similarities and patentability concerns between the company's damper and a design by Lanchester. | 12th Apr 1927 | West Wittering \ Q \ April1927-June1927 17 | |
| Reputational risk of adopting Lucas magnetos due to their poor performance on Morris cars. | 12th Apr 1927 | West Wittering \ Q \ April1927-June1927 18 | |
| Design specifications for hypoid gears, including off-set sizes, component changes, and gear ratios. | 14th Apr 1927 | West Wittering \ Q \ April1927-June1927 19 | |
| Proposal for mounting hydraulic shock dampers on the rear axle of a 20HP model. | 14th Apr 1927 | West Wittering \ Q \ April1927-June1927 20 | |
| Poor riding quality of a specific car presented to Mr. Brewster and the proposed actions to rectify the issue. | 15th Apr 1927 | West Wittering \ Q \ April1927-June1927 21 | |
| Procurement and specifications for magnetos for the Phantom and 20HP models. | 15th Apr 1927 | West Wittering \ Q \ April1927-June1927 22 | |
| Sourcing of a suitable clock for a cluster board, expressing frustration with suppliers and design options. | 20th Apr 1927 | West Wittering \ Q \ April1927-June1927 23 | |
| Phantom tappet noises, questioning if rocker alterations are the true cause of improvement. | 20th Apr 1927 | West Wittering \ Q \ April1927-June1927 24 | |
| Lanchester patent for a crankshaft damper and its potential application to a Goshawk engine. | 20th Apr 1927 | West Wittering \ Q \ April1927-June1927 25 | |
| Improvements to the steering worm, nut, and spring return mechanisms. | 20th Apr 1927 | West Wittering \ Q \ April1927-June1927 26 | |
| Steering mechanism design choices, focusing on springs, worm shafts, and the Phantom axle. | 22th Apr 1927 | West Wittering \ Q \ April1927-June1927 27 | |
| Proposing a simple battery charge indicator using a green light to warn the driver. | 22th Apr 1927 | West Wittering \ Q \ April1927-June1927 28 | |
| Inquiring about removing felt glands on valve gear to enable the adoption of double valve springs. | 23th Apr 1927 | West Wittering \ Q \ April1927-June1927 29 | |
| | | | |
