| Description | Date | Identifier | |
| Non-standardization of wider wheel tracks due to feasibility and international road compatibility. | 30th Aug 1930 | West Wittering \ U \ August1930-November1930 Scan036 | |
| Analysis of variables like tyre size, inflation, and speed affecting A.T. speedometers. | 4th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan037 | |
| Continued document discussing calculations for speedometer instrument revolutions per mile. | 13th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan038 | |
| Analysis of speedometer and odometer accuracy based on tyre size, inflation, speed, and temperature. | 4th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan039 | |
| Speedometer accuracy at high speed, affected by the centrifugal effect of tyres, and a proposal to correct it. | 4th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan040 | |
| Continued discussion on the compression of instrument scales above 40 mph. | 1st Sep 1930 | West Wittering \ U \ August1930-November1930 Scan041 | |
| The causes of brake thumping on the 25HP car and a proposed update for the instruction manual. | 5th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan042 | |
| Brake and clutch experiments, focusing on materials like Ferodo linings and cast iron. | 5th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan043 | |
| Clarifying that 43% of Phantom II cars carry either one or two spare wheels at the rear. | 1st Sep 1930 | West Wittering \ U \ August1930-November1930 Scan044 | |
| Single point radiator mounting scheme for specific complaint cases, mentioning 'jelliers' and diabolo rubber fittings. | 5th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan045 | |
| Sketch of radiator side fittings on 24EX, showing a combination of parts Nsd. 3062 and Nsd. 3059. | 5th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan046 | |
| Suggested alterations and design considerations for a K.S. petrol gauge tank fitting. | 6th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan047 | |
| Vibrations in the 25 HP model caused by the whirling of the propeller shaft at high speeds. | 8th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan048 | |
| Cooling problems and radiator modifications on the Phantom II cars. | 9th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan049 | |
| Page 2 of a report stating that a complete report is being prepared following a comparison with the original Phantom II. | 9th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan050 | |
| Failures and proposed improvements for the Phantom clutch. | 10th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan051 | |
| Ongoing clutch issues related to the driven member, pressure plate binding, and subsequent modifications. | 10th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan052 | |
| Recommendation to increase the adjustment range for the hand brake lever on left-hand drive chassis. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan053 | |
| Tests of an automatic boost regulator, detailing initial inconsistent results due to friction and subsequent improvements. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan054 | |
| Engine boost control adjustments and performance under various throttle and altitude conditions. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan055 | |
| Issues with friction and 'hunting' in engine controls, boost regulators, and magneto operation. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan056 | |
| Performance graph of an automatic boost regulator for an F. Engine T.49 under test conditions. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan057 | |
| The mileage testing of Watford Type E.W.6A magnetos with tungsten points. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan058 | |
| Recommendation to standardise the fitting of tungsten contact points to EW6A magnetos following successful testing. | 1st Sep 1930 | West Wittering \ U \ August1930-November1930 Scan059 | |
| The characteristics and issues with thermostat-controlled radiator shutters. | 12th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan060 | |
| Graphical chart detailing Smith's Calorstat tests, plotting load versus temperature for radiator shutter operation. | 9th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan061 | |
| Blank cover sheet with a purple ink stamp in the bottom right corner. | 12th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan062 | |
| Cover note for attached documents concerning valve spring coil vibrations. | 3rd Sep 1930 | West Wittering \ U \ August1930-November1930 Scan063 | |
| The failure of American-supplied bumpers during stress testing. | 15th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan064 | |
| Blueprint of a component showing front and rear views with dimensions. | 13th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan065 | |
| Blank document with a Print Room date stamp. | 13th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan066 | |
| Requesting the return of a Quadruplex pump sent for evaluation, as the manufacturer is now pressing for payment. | 15th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan067 | |
| Technical memorandum comparing two types of Phantom clutches and their associated performance issues. | 15th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan068 | |
| Clutch faults, performance testing, and a proposal to demonstrate its superiority over a competitor's design. | 15th Feb 1930 | West Wittering \ U \ August1930-November1930 Scan069 | |
| Development of silent third and easy-change gearboxes and the testing of a new four-speed box from an American company. | 19th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan070 | |
| Letter from Rolls-Royce of America concerning the evaluation of an internal geared transmission from Automotive Research Corp. | 6th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan071 | |
| Letter discussing a new 'selector' shift gearbox, ideal axle ratios, and a torque-equalized brake system. | 6th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan072 | |
| Letter from Carl A. Neracher regarding Chrysler's spool gear type transmissions and their potential application. | 6th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan073 | |
| Letter discussing synchromesh transmissions, Chrysler's experience, and arranging a test of a small transmission. | 10th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan074 | |
| On the testing of nitro hardened steel crankshafts and a recommendation for an initial order. | 10th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan075 | |
| Proposing a visit to bring a left-hand drive car fitted with an anti-spilling radiator and low-friction shutters. | 23th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan076 | |
| The cooling efficiency of different radiator types for the Phantom II model. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan077 | |
| Report discussing the efficiency of direct versus indirect radiator cooling, with an attached graph showing mean air speed through a radiator versus car speed. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan078 | |
| Radiator efficiency tests, comparing different types and analyzing heat dissipation. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan079 | |
| Comparison of radiator tube designs (round, square, hexagon) focusing on efficiency, surface area, and construction. | 24th Feb 1930 | West Wittering \ U \ August1930-November1930 Scan080 | |
| Improving radiator cooling efficiency by adjusting tube thickness and design, and examining the effects on engine temperature. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan081 | |
| Continued discussion on Chrysler radiator design and its matrix with fine air passages. | 24th Feb 1930 | West Wittering \ U \ August1930-November1930 Scan082 | |
| Comparative analysis table of different radiator tube designs and their performance metrics. | 24th Feb 1930 | West Wittering \ U \ August1930-November1930 Scan083 | |
| Graph and table comparing the performance of different types of radiator cores for slow-speed cooling. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan084 | |
| Blank page stamped by the Print Room in Derby. | 24th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan085 | |
| Technical drawing of a square matrix tube. | 11th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan086 | |
| The reverse of a document showing a purple ink 'Print Room' stamp from Derby. | 25th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan087 | |
| Extensive testing of a push-button switch without carbon contacts. | 30th Sep 1930 | West Wittering \ U \ August1930-November1930 Scan088 | |
| Summary of experiments conducted on flywheel vibrations for a 25 HP engine. | 2nd Oct 1930 | West Wittering \ U \ August1930-November1930 Scan089 | |
| Experimental notes on engine flywheel vibration and its measurement. | 2nd Oct 1930 | West Wittering \ U \ August1930-November1930 Scan090 | |
| Engine flywheel experiments concerning inertia, vibration, and performance. | 2nd Oct 1930 | West Wittering \ U \ August1930-November1930 Scan091 | |
| Testing clutchless flywheel configurations and their effect on engine smoothness, vibration and noise. | 3rd Oct 1930 | West Wittering \ U \ August1930-November1930 Scan092 | |
| Investigation into flywheel vibrations and attempted solutions. | 3rd Oct 1930 | West Wittering \ U \ August1930-November1930 Scan093 | |
| Failures and proposed modifications for the Phantom II battery box supports. | 6th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan094 | |
| Modification drawing for a battery box support, detailing an additional bracket and stiffener. | 6th Oct 1950 | West Wittering \ U \ August1930-November1930 Scan095 | |
| Road tests of the Daimler Fluid Flywheel and Easy Change Gearbox fitted to a 50/40 Double Six chassis. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan096 | |
| Test report on a vehicle's fluid flywheel and gearbox performance following brutal treatment. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan097 | |
| Report and diagrammatic sketch explaining the Maybach Overspeed Gear system. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan098 | |
| Report page continuing the analysis of competitor vehicle gearboxes and performance, specifically Daimler and Cadillac. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan099 | |
| Road test report on a Daimler Double Six 30/40 chassis. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan100 | |
| Test report detailing the specifications and performance of a 16-cylinder Cadillac, page 6. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan101 | |
| Performance and noise comparison report between a Phantom II model and a Cadillac. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan102 | |
| Performance evaluation report on a Cadillac, covering cooling, brakes, clutch, and steering. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan103 | |
| The suspension, performance, and specifications of a 12 Cylinder Maybach, with comparisons to other cars. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan104 | |
| The Harris Leon-Laisne's suspension and the frame design of an 8-cylinder Chrysler. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan105 | |
| Report page discussing automotive frame, radiator, and wing designs of competitor vehicles. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan106 | |
| Notes on Gallay radiators, chassis design, and the Voisin magnetic relay. | 17th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan107 | |
| Description of the Voisin magnetic relay transmission system with a diagram. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan108 | |
| Summary of trial findings on twelve-cylinder engines, highlighting unresolved issues with power unit noise and suspension. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan109 | |
| Inconsistent test results for a square tube radiator. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan110 | |
| Testing modified Dunlop Silent Tread Tyres for road adhesion and noise. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan111 | |
| Proposal to standardise a new type of tyre following successful trials showing improved adhesion and wear. | 7th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan112 | |
| Arranging to carry the bonnet over the dashboard on the Phantom 11 N.2 Series. | 13th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan113 | |
| Sixth Brooklands report on a series of tests on six different types of radiator core. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan114 | |
| Tests of different radiator tube designs to improve cooling efficiency. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan115 | |
| Continued analysis of radiator tube efficiency, including a review of different tube types and the Gallay radiator. | 24th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan116 | |
| Comparison of radiator tube designs, including a sample from Rolls-Royce of America, and their impact on cooling efficiency. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan117 | |
| Comparison of square and round radiator tubes at full throttle and low speeds. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan118 | |
| Performance comparison of different types of radiator tubes tested on a 19EX car at Brooklands track. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan119 | |
| Graph plotting hydraulic restriction characteristics of a parallel square tube radiator against engine RPM. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan120 | |
| Blank document page with a purple ink date stamp from the Print Room. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan121 | |
| Graph plotting water flow tests against water temperature for a P.I. No 7 unit standard radiator. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan122 | |
| Stamped by the Print Room in Derby. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan123 | |
| Experimental findings on the performance of tungsten contact points and related condenser capacity. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan124 | |
| Ignition distributor condenser capacity, materials, and performance after a 10,000-mile test. | 4th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan125 | |
| Test report on distributor point oxidation, examining the effects of varying condenser capacities. | 4th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan126 | |
| Test results for lower capacity condensers on 20/25 HP and Phantom II chassis to address misfiring. | 14th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan127 | |
| Experiments investigating flywheel vibrations on a 25 HP engine. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan128 | |
| Investigation into flywheel vibrations by systematically isolating components to determine the source. | 20th Oct 1931 | West Wittering \ U \ August1930-November1930 Scan129 | |
| Experiments to diagnose flywheel and crankshaft vibrations, including specifications for a standard flywheel and clutch. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan130 | |
| Results of radiator tests comparing different tube and bonnet designs. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan131 | |
| Comparison of square versus round radiator tubes for performance and cost. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan132 | |
| Table comparing critical atmospheric overheating temperatures for different radiator types under various driving conditions. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan133 | |
| Inspection and test report on a Delco-Remy combined ignition distributor and contact breaker unit. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan134 | |
| Inspection and bench test report for a Delco-Remy Ignition Distributor. | 20th Oct 1930 | West Wittering \ U \ August1930-November1930 Scan135 | |
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