| Description | Date | Identifier | |
| Graph comparing the load versus deflection for Continental and Standard rubber buffers on a 40/50 rear axle. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan072 | |
| Blank page with a departmental date stamp in the bottom right corner. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan073 | |
| Graph showing the load versus deflection rating of a road spring and buffer. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan074 | |
| Graph of oil pressure versus piston velocity for a hydraulic damper with staggered orifices at different temperatures. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan075 | |
| Graph comparing the viscosities of various oils plotted against temperature. | 28th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan076 | |
| Blank page marked with a print room date stamp. | 28th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan077 | |
| Test results for a hydraulic shock damper with various restriction configurations, pressures, and temperatures. | 21th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan078 | |
| Stamped by the Test Room in Derby. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan079 | |
| Blueprint detailing hydraulic shock damper tests with various restriction configurations and performance results. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan080 | |
| Cover note for an assistant's report (WC.92) regarding varnished battery ignition distributor moulded heads. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan081 | |
| Experiment testing various varnishes on battery ignition distributor moulded heads to prevent tracking. | 27th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan082 | |
| Insufficient dynamo output at high speeds and proposed modifications to the armatures. | 30th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan083 | |
| On the completion of the 12-EX Phantom chassis for a 10,000-mile test, detailing modifications and delays. | 31th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan084 | |
| Objections to irreversible steering systems, analysing high-speed wobble and the effects of tyre size. | 2nd Apr 1928 | West Wittering \ S \ March1928-May1928 Scan085 | |
| Technical memorandum discussing steering geometry, wheel wobble, and potential solutions to reduce road shocks. | 2nd Apr 1928 | West Wittering \ S \ March1928-May1928 Scan086 | |
| Continued discussion on 12-EX steering performance in France compared to the standard. | 1st Apr 1928 | West Wittering \ S \ March1928-May1928 Scan087 | |
| The performance of the 20 HP car, discussing potential improvements and design considerations such as engine size and chassis weight. | 1st Apr 1928 | West Wittering \ S \ March1928-May1928 Scan088 | |
| Increasing engine size for better performance and comparing it with competitor vehicles. | 11th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan089 | |
| Issues with Watford R.O.1 sleeve type magnetos and sourcing a less costly replacement. | 11th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan090 | |
| The unsatisfactory performance of Watford EW6 magnetos, detailing issues with noise, poor low-speed operation, and timing variations. | 11th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan091 | |
| Magneto performance issues, including cold start failures, noise, and endurance testing. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan092 | |
| Noisy magnetos, discussing modifications and tests with supplier Messrs. North. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan093 | |
| Testing magnetos, comparing tungsten points and the performance of bakelite versus steel gears. | 8th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan094 | |
| Suggestion to obtain a number of Lucas machines for experimental production testing. | 2nd Apr 1928 | West Wittering \ S \ March1928-May1928 Scan095 | |
| Comparison of steering ratios between various American cars and internal models, with a discussion on steering geometry for racing versus large vehicles. | 2nd Apr 1928 | West Wittering \ S \ March1928-May1928 Scan096 | |
| Circumstances of an accident involving the 15-EX car. | 13th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan097 | |
| Continued report discussing a car accident, focusing on the dislodged rear axle and an investigation into the cause of the car skidding. | 4th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan098 | |
| Results of tests on a lighter clutch for a 20 HP vehicle. | 4th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan099 | |
| Technical drawing of a proposed lightened flywheel. | 10th Dec 1927 | West Wittering \ S \ March1928-May1928 Scan100 | |
| Inadequate fuel supply in supercharger carburetters, specifically regarding the float chambers and needle valve. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan101 | |
| Comparison of carburettor fuel flow, level variation, and float design for Falcon, Condor, and Supercharged F engines. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan102 | |
| Carburetter float chamber design and fuel flow considerations. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan103 | |
| Page detailing carburetter needle valve settings, float drops, and fuel flow issues between front and rear float chambers. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan104 | |
| Carburetter fuel feed improvements and recommendations for the Condor engine. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan105 | |
| Continued memorandum on carburettor design, focusing on the float chamber, fuel passages, and diffusers. | 13th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan106 | |
| Table showing the effect on petrol level of larger floats and needle valves combined with various float leverages. | 13th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan107 | |
| Reverse of a document showing a date stamp from the Derby works. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan108 | |
| Comparison table of specifications for Falcon XI and Condor aero carburettors. | 12th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan109 | |
| Blueprint for a suggested connecting pipe between front and rear float chambers to improve fuel flow. | 12th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan110 | |
| Diagram showing fuel levels in front and rear float chambers under different flow conditions. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan111 | |
| Blank page with a purple date stamp from the Print Room in Derby. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan112 | |
| Experiments conducted on a bump rig to measure steering column deflection with a cast dash. | 6th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan113 | |
| Analysis of steering column deflection, proposing dash and suspension modifications as solutions. | 6th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan114 | |
| Test report detailing steering column movement measurements on a bumping rig under various chassis configurations. | 17th Apr 1934 | West Wittering \ S \ March1928-May1928 Scan115 | |
| Blueprint for an experimental stiffener for cast dash bumping tests. | 17th Apr 1934 | West Wittering \ S \ March1928-May1928 Scan116 | |
| Tests conducted on various Phantom induction pipe designs. | 21th Apr 1923 | West Wittering \ S \ March1928-May1928 Scan117 | |
| Experiments with one-piece and two-piece distributing pipe models and nozzles to improve fuel distribution. | 21th Apr 1923 | West Wittering \ S \ March1928-May1928 Scan118 | |
| Report comparing the performance of underfed slotted, weir, and standard pipes. | 21th Apr 1923 | West Wittering \ S \ March1928-May1928 Scan119 | |
| Graph of specific petrol consumption versus dynamometer load for a Phantom engine, comparing standard and Weir induction pipes. | 20th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan120 | |
| Stamped document from the Print Room. | 20th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan121 | |
| Graph comparing power and induction depression with different Weir induction pipes for a Phantom engine. | 20th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan122 | |
| Requirements and difficulties with magnetos from various manufacturers. | 21th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan123 | |
| Continued note discussing a 58° range, electrical principles, component materials like bakelite, and interactions with Messrs. North and Watford. | 16th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan124 | |
| Phantom steering, comparing its ratio to Bentley and Hispano models and detailing improvements and customer feedback. | 23th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan125 | |
| Steering characteristics during a skid, comparing low-geared steering on a Phantom with a 20 HP and Bugatti. | 23th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan126 | |
| Review of magnetos from various manufacturers for the Phantom Chassis. | 23th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan127 | |
| Report comparing the performance and characteristics of Scintilla, Simms, and Lucas magnetos. | 21th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan128 | |
| Summary of magneto rejections on production chassis between January and April 1928, broken down by fault type. | 21th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan129 | |
| Proposed improvements for a new series of 100 Phantom cars. | 1st Apr 1928 | West Wittering \ S \ March1928-May1928 Scan130 | |
| Testing and ordering materials for car parts, including brakes, wheels, and hubs for the 12-EX model. | 1st Apr 1928 | West Wittering \ S \ March1928-May1928 Scan131 | |
| Test report on an 8-Cylinder 2-Litre Bugatti, noting its poor performance compared to the Phantom sports car. | 1st Apr 1928 | West Wittering \ S \ March1928-May1928 Scan132 | |
| Test report on a modified straight through vertical carburetter for the Phantom engine. | 25th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan133 | |
| Carburettor tests comparing fixed size chokes with constant depression carburetters and discussing fuel atomisation and power output. | 25th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan134 | |
| Carburettor tests focusing on air intake position and mixture distribution. | 26th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan135 | |
| Comparison of weights between Standard and Side by Side brake gear components. | 26th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan136 | |
| Laboratory endurance test of a Watford KW6 magneto and an ongoing test of a Robert Bosch magneto. | 28th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan137 | |
| Endurance test report on a Watford EW6 Magneto No.105302. | 28th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan138 | |
| Test results and recommendations for a cast dashboard design. | 30th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan139 | |
| Analysis of steering column movement and vibration, with proposals for stiffening the dash and radiator support. | 30th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan140 | |
| Test results for steering column movement with different rear engine mounting configurations. | 30th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan141 | |
| Table showing the effects of radiator coupling to the dashboard under four different engine mounting and damper configurations. | 28th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan142 | |
| Explanatory diagrams for dashboard supports and stiffeners. | 28th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan143 | |
| Reverse of a photographic print with a company date stamp. | 1st May 1942 | West Wittering \ S \ March1928-May1928 Scan144 | |
| Specifications and fitting of a green lamp switch unit to experimental chassis. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan145 | |
| The resistance specifications and operational voltage testing for a Green Lamp Switch M, noting material composition and performance variations with temperature. | 30th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan146 | |
| Wiring diagram for the connections of a green lamp relay switch for battery charge control. | 22th Mar 1928 | West Wittering \ S \ March1928-May1928 Scan147 | |
| Broken near-side and off-side front springs found on car 14-EX after its return from Le Canadel. | 28th May 1928 | West Wittering \ S \ March1928-May1928 Scan148 | |
| Bumping rig tests comparing Firths and American road springs. | 28th May 1928 | West Wittering \ S \ March1928-May1928 Scan149 | |
| The testing and comparison of different rear spring types, their weights, and performance on car models 12-KX and 15-EX. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan150 | |
| Summary of the 20 HP steering position, comparing J and M series geometry and steering ratios. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan151 | |
| Table of specifications for 20 HP steering conversions to achieve a lower over-all ratio. | 7th May 1928 | West Wittering \ S \ March1928-May1928 Scan152 | |
| Blank page with a Print Room date stamp. | 7th May 1928 | West Wittering \ S \ March1928-May1928 Scan153 | |
| The laboratory testing and suitability of Maconinte H.T. cable for chassis use, comparing it to standard cable. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan154 | |
| Comparative tests of Maconito and standard Glover insulated cables for high tension wiring. | 2nd May 1928 | West Wittering \ S \ March1928-May1928 Scan155 | |
| The comparative testing of various H.T. cables such as Gloverite, Super-Glover, Helsby and MaconitÄ—. | 2nd May 1928 | West Wittering \ S \ March1928-May1928 Scan156 | |
| Examination report on the condition of various ignition cable sets after extensive mileage. | 2nd May 1928 | West Wittering \ S \ March1928-May1928 Scan157 | |
| Results of electrical breakdown tests on different cable samples. | 2nd May 1928 | West Wittering \ S \ March1928-May1928 Scan158 | |
| Quality of H.T. ignition cables, comparing Glover's products with Maconinte, and recommending the latter as the standard. | 18th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan159 | |
| Development and cessation of work on the Auto Charge Control Switch. | 18th Apr 1928 | West Wittering \ S \ March1928-May1928 Scan160 | |
| Request for permission to send chassis 17-EX to Messrs. Jarvis to have a sports body fitted. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan161 | |
| Examination of the 15-EX car chassis following an accident, concluding road conditions were the likely cause. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan162 | |
| Advantages of a dashboard-mounted petrol level indicator over the existing back-tank gauge. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan163 | |
| The disadvantage and cost of instrument board gauges. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan164 | |
| Tests, assembly, and performance issues related to the position of scraper rings. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan165 | |
| The urgent requirement for a subframe arrangement for mounting the car body, noting its advantages over the Phantom model. | 5th May 1928 | West Wittering \ S \ March1928-May1928 Scan166 | |
| Progress update on a chassis build, noting a delay pending instructions for the engine section which is needed for bench testing. | 5th May 1928 | West Wittering \ S \ March1928-May1928 Scan167 | |
| List of vehicle sections for which design schemes or further information are being awaited. | 7th May 1928 | West Wittering \ S \ March1928-May1928 Scan168 | |
| Impact of a higher radiator on driver vision in a Phantom model and a proposed alteration to the steering column. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan169 | |
| On rectifying complaints about 40/50 model steering by modifying steering ratios and suspension. | 8th May 1928 | West Wittering \ S \ March1928-May1928 Scan170 | |
| Chart detailing steering conversion specifications for complaints, aiming for a 15/1 over-all ratio. | 1st May 1928 | West Wittering \ S \ March1928-May1928 Scan171 | |
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