| Description | Date | Identifier | |
| Suggesting the trial of duralumin rockers to reduce the 'Phantom' model's weight. | 15th Oct 1925 | Box 66a \ 1 scan0067 | |
| Standardisation proposal for a low speed jet control cone. | 14th Oct 1925 | Box 66a \ 1 scan0068 | |
| Alteration to the taper of the low speed jet cone for the New Phantom model. | 3rd Nov 1925 | Box 66a \ 1 scan0069 | |
| Considerations for cold weather testing, focusing on carburation, induction systems, and oil viscosity. | 18th Nov 1925 | Box 66a \ 1 scan0070 | |
| Petrol consumption and suggesting experiments to improve efficiency by heating the throttle or intake air. | 25th Nov 1925 | Box 66a \ 1 scan0071 | |
| Bench and road tests for the Phantom carburetter. | 26th Nov 1925 | Box 66a \ 1 scan0072 | |
| The action, adjustment, and limitations of the New Phantom carburetter. | 26th Nov 1925 | Box 66a \ 1 scan0073 | |
| Carburetter petrol flow velocity, including a formula and a corresponding graph. | 26th Nov 1925 | Box 66a \ 1 scan0074 | |
| The performance of the New Phantom carburetter, focusing on air flow and fuel mixture ratios. | 26th Nov 1925 | Box 66a \ 1 scan0075 | |
| The correct setup of low-speed jets and air ports in a carburetter. | 26th Nov 1925 | Box 66a \ 1 scan0076 | |
| Showing graphs of carburettor mixture control positions against engine R.P.M. | 12th Jun 1925 | Box 66a \ 1 scan0077 | |
| Possible troubles caused by incorrect carburettor settings and the automatic range. | 26th Nov 1926 | Box 66a \ 1 scan0078 | |
| Carburetter adjustments and related engine factors. | 26th Nov 1925 | Box 66a \ 1 scan0079 | |
| Carburettor settings, fuel supply, and adjustments for low-speed jets. | 26th Nov 1925 | Box 66a \ 1 scan0080 | |
| Carburettor speed jet and diaphragm adjustment procedures. | 26th Nov 1925 | Box 66a \ 1 scan0081 | |
| Comparing the New Phantom carburettor's performance with the Silver Ghost's. | 12th Jun 1925 | Box 66a \ 1 scan0082 | |
| Troubleshooting guide for engine performance issues. | 12th Jun 1925 | Box 66a \ 1 scan0083 | |
| Letter from the American branch to England acknowledging receipt of an experimental report on Phantom carburettor tests. | 15th Dec 1925 | Box 66a \ 1 scan0084 | |
| Cover note for information regarding the 'Phantom' carburetter adjustment and fitting. | 23th Dec 1925 | Box 66a \ 1 scan0085 | |
| Super-heated hot spot system for the Phantom engine. | 2nd Feb 1926 | Box 66a \ 1 scan0086 | |
| Explanation of temperature variations in the induction pipe and its effect on the air-fuel mixture. | 2nd Feb 1926 | Box 66a \ 1 scan0087 | |
| Tests comparing water, steam, and exhaust gas heating systems, including data on heat transfer and water velocity. | 2nd Feb 1926 | Box 66a \ 1 scan0088 | |
| Report page detailing experiments on engine cooling systems, focusing on the rate of heating from cold with various water flows. | 2nd Feb 1926 | Box 66a \ 1 scan0089 | |
| Graph and analysis of hot spot temperature increase over time with varying water flow rates. | 2nd Feb 1926 | Box 66a \ 1 scan0090 | |
| Page analyzing a graph of induction pipe temperatures after a cold start, comparing superheated, standard exhaust, and water-heated systems. | 2nd Feb 1926 | Box 66a \ 1 scan0091 | |
| Graph and analysis comparing the performance of three different 'hot spot' heating systems from a cold start. | 2nd Feb 1926 | Box 66a \ 1 scan0092 | |
| Report page comparing the temperature performance of a standard exhaust heated system against a water heated system, including a graph of working temperatures at full throttle. | 2nd Feb 1926 | Box 66a \ 1 scan0093 | |
| Page with a table of induction pipe and air temperatures at different RPMs and heating conditions, followed by analysis on hot spot temperature's effect on power and efficiency. | 2nd Feb 1926 | Box 66a \ 1 scan0094 | |
| Test report page comparing specific fuel consumption and B.M.E.P. for different engine hot spot systems. | 2nd Feb 1926 | Box 66a \ 1 scan0095 | |
| Graph and analysis comparing fuel consumption curves for water heated, superheated, and standard exhaust heated systems. | 2nd Feb 1926 | Box 66a \ 1 scan0096 | |
| Performance graph and analysis comparing standard, water-heated, and superheated engine systems. | 2nd Feb 1926 | Box 66a \ 1 scan0097 | |
| Analysis of heat transfer in engine cooling systems, comparing heat input and temperature rise under full load conditions. | 2nd Feb 1926 | Box 66a \ 1 scan0098 | |
| Graph and analysis of heat transfer in an engine's cooling and carburettor system at various RPMs. | 2nd Feb 1926 | Box 66a \ 1 scan0099 | |
| The influence of hot spot temperature on engine detonation, including a graph. | 2nd Feb 1926 | Box 66a \ 1 scan0100 | |
| Report page analyzing the influence of fuel volatility on engine warm-up time, with a comparative graph. | 2nd Feb 1926 | Box 66a \ 1 scan0101 | |
| Summary of tests comparing standard, superheated, and water-heated hot spot systems on engines. | 2nd Feb 1926 | Box 66a \ 1 scan0102 | |
| The disadvantages of a standard system, specifically trouble with the exhaust throttle valve and potential overheating. | 12th Feb 1926 | Box 66a \ 1 scan0103 | |
| Blueprint detailing the apparatus for testing a superheated throttle and measuring water flows. | 12th Feb 1926 | Box 66a \ 1 scan0104 | |
| Experiments and suggestions regarding heating throttles for the Phantom engine. | 19th Feb 1926 | Box 66a \ 1 scan0105 | |
| Engine water jacket heating systems and exhaust-heated throttles. | 11th Jan 1926 | Box 66a \ 1 scan0106 | |
| Standardisation proposal for the fixing of the spring in an air valve to improve reliability. | 11th Jan 1926 | Box 66a \ 1 scan0107 | |
| Circulation of reports on Phantom carburetter and consumption tests. | 11th Mar 1926 | Box 66a \ 1 scan0108 | |
| Complaints about the Phantom carburettor float chamber cover coming loose and proposing a locking device. | 19th Mar 1926 | Box 66a \ 1 scan0109 | |
| Implementation of a locking device for a float chamber lid on carburettors. | 23th Mar 1926 | Box 66a \ 1 scan0110 | |
| Technical memo discussing the causes and potential solutions for firing in the exhaust of a Phantom engine. | 30th Mar 1926 | Box 66a \ 1 scan0111 | |
| Request to create designs for locking the float chamber lids on two chassis. | 16th Apr 1926 | Box 66a \ 1 scan0112 | |
| Request to design locks for float chamber lids on chassis, similar to those on the 'Eagle' Aero engines. | 19th Apr 1926 | Box 66a \ 1 scan0113 | |
| Causes and potential solutions for explosions in a car's silencer. | 18th May 1926 | Box 66a \ 1 scan0114 | |
| The cause and prevention of self-ignition in the Phantom engine, discussing carburetter and exhaust valve modifications. | 22th Jun 1926 | Box 66a \ 1 scan0115 | |
| Testing self-ignition and the phenomenon of the engine running backwards on Phantom engines. | 28th Jun 1926 | Box 66a \ 1 scan0116 | |
| Carburetter fire risk, back-fires, and the effectiveness of the air intake design. | 5th Jul 1926 | Box 66a \ 1 scan0117 | |
| Methods for carburetter and throttle heating to avoid valve issues, proposing systems using superheated water or steam. | 5th Jul 1926 | Box 66a \ 1 scan0118 | |
| Design considerations and test findings for an aluminium carburetter on a Phantom engine. | 6th Jul 1926 | Box 66a \ 1 scan0119 | |
| Continued memorandum discussing modifications to a brass petrol union. | 1st Jul 1926 | Box 66a \ 1 scan0120 | |
| Satisfactory results with steam heating for the induction pipe bend on Phantom engines, proposing to fit an arrangement to car 7-EX. | 1st Jul 1926 | Box 66a \ 1 scan0121 | |
| Experiments with superheated carburetter throttle systems on Phantom engines. | 8th Jul 1926 | Box 66a \ 1 scan0122 | |
| Analysis of exhaust heated system performance, comparing configurations with and without a butterfly valve for quick warming up. | 8th Jul 1926 | Box 66a \ 1 scan0123 | |
| Comparison of heating rates between a superheat system and a standard exhaust system, illustrated with a graph and diagram. | 8th Jul 1926 | Box 66a \ 1 scan0124 | |
| Engine warming up tests, analysing boiler capacity and heat added to the cooling system under various conditions. | 8th Jul 1926 | Box 66a \ 1 scan0125 | |
| Report page summarising experiments and conclusions on a boiler's superheat and exhaust heating systems. | 10th Jul 1926 | Box 66a \ 1 scan0126 | |
| Decision not to test an alternative carburetter throttle jacket heating system for Phantom engines due to freezing and draining concerns. | 10th Jul 1926 | Box 66a \ 1 scan0127 | |
| Approving schemes for float chamber cover locking devices for the Phantom & 20 HP models. | 12th Jul 1926 | Box 66a \ 1 scan0128 | |
| Investigation into the causes of explosions in the silencer on the Phantom model. | 1st Jan 1926 | Box 66a \ 1 scan0129 | |
| Analysis of continuous explosions observed during engine coasting with a slightly open throttle. | 13th Aug 1926 | Box 66a \ 1 scan0130 | |
| Page 3 of a report detailing experimental results to support a theory on engine firing and mixture strength. | 13th Aug 1926 | Box 66a \ 1 scan0131 | |
| Analysis of engine explosions within the exhaust manifold under different experimental conditions. | 13th Aug 1926 | Box 66a \ 1 scan0132 | |
| Analysis of the causes of explosions in the exhaust manifold and silencer. | 1st Aug 1926 | Box 66a \ 1 scan0133 | |
| The cause of sticking throttles in new Phantom engines due to carbon deposits, and a recommendation to standardize a modification. | 1st Aug 1926 | Box 66a \ 1 scan0134 | |
| Distribution tests for the Phantom engine, comparing different manifold and carburetter configurations. | 1st Aug 1926 | Box 66a \ 1 scan0135 | |
| Report comparing fuel distribution characteristics of Eagle and Phantom carburettors with different manifold configurations. | 1st Aug 1926 | Box 66a \ 1 scan0136 | |
| Report page detailing experiments with various carburetter and manifold configurations, including a blueprint diagram. | 1st Aug 1926 | Box 66a \ 1 scan0137 | |
| Page from a report detailing experiments on a standard carburetter system with associated diagrams. | 1st Aug 1926 | Box 66a \ 1 scan0138 | |
| Testing a new distributing pipe design, with a B.M.E.P. comparison table against the standard system at various RPMs. | 1st Aug 1926 | Box 66a \ 1 scan0139 | |
| Construction and testing of a new distributing pipe for a Phantom engine. | 30th Aug 1926 | Box 66a \ 1 scan0140 | |
| Modifications and performance improvements for Phantom induction pipes and related engine components. | 30th Aug 1926 | Box 66a \ 1 scan0141 | |
| Problem of sticking foot accelerators on Phantom cars and seeking a solution. | 31th Aug 1926 | Box 66a \ 1 scan0142 | |
| Fault with sticking throttles on the Phantom car and proposed modifications. | 9th Sep 1926 | Box 66a \ 1 scan0143 | |
| Drawing LeC.2290, detailing modifications to Phantom carburetter mixture control levers. | 9th Sep 1926 | Box 66a \ 1 scan0144 | |
| Engine issue of 'popping back' in the Phantom model. | 3rd Sep 1926 | Box 66a \ 1 scan0145 | |
| Revisions to the Phantom carburetter, specifically replacing ball bearings with stainless steel roller bearings. | 10th Oct 1926 | Box 66a \ 1 scan0146 | |
| Customer's initials to investigate a carburetter blow-back complaint. | 2nd Nov 1926 | Box 66a \ 1 scan0147 | |
| Query about fitting a Lorraine-style carburetter and induction system to a 40/50 lightweight engine. | 11th Nov 1926 | Box 66a \ 1 scan0148 | |
| Improvements to the Phantom throttle control and 20 HP bonnet louvres for standardisation. | 18th Nov 1926 | Box 66a \ 1 scan0149 | |
| Graph plotting governor lag for chassis 8EX, comparing engine RPM against notches on the quadrant. | 27th Oct 1926 | Box 66a \ 1 scan0150 | |
| Standard production graph showing governor lag for chassis 46 N.C. | 27th Oct 1926 | Box 66a \ 1 scan0151 | |
| With a sketch proposing the design and testing of new twin-carburetter induction pipes for the Phantom engine. | 1st Dec 1926 | Box 66a \ 1 scan0152 | |
| Cost of standardising chassis parts, specifically modifications to the butterfly valve, controls and carburetter throttle. | 8th Dec 1926 | Box 66a \ 1 scan0153 | |
| Standardisation of chassis parts relating to a modified angle to the butterfly throttle and modified controls to clear the bonnet. | 20th Nov 1926 | Box 66a \ 1 scan0154 | |
| Issues with petrol leaking from carburettors after chassis tests. | 22th Dec 1926 | Box 66a \ 1 scan0155 | |
| Suggestion to modify the fulcrum on a lever for the Silver Ghost model. | 30th Dec 1926 | Box 66a \ 1 scan0156 | |
| Carburetter petrol levels for the Phantom model, detailing float adjustments required for different fuels like benzol. | 30th Dec 1926 | Box 66a \ 1 scan0157 | |
| Increased suction noise and whistling from the Phantom carburettor. | 24th Jan 1927 | Box 66a \ 1 scan0158 | |
| Noise issue with the Phantom carburetter's throttle angle alteration. | 28th Jan 1927 | Box 66a \ 1 scan0159 | |
| Quieting increased suction noise in the Phantom carburetter by modifying the throttle valve. | 28th Jan 1927 | Box 66a \ 1 scan0160 | |
| Induction pipe experiments conducted on the Phantom engine. | 2nd Feb 1927 | Box 66a \ 1 scan0161 | |
| Tests of various intake and carburettor systems for cold engine distribution, including a slotted intake pipe and a two-throttle carburettor. | 2nd Feb 1927 | Box 66a \ 1 scan0162 | |
| Carburetor and manifold experiments and their negative results on engine performance. | 2nd Feb 1927 | Box 66a \ 1 scan0163 | |
| Experiments with induction systems to overcome cold starting difficulties and the effects of temperature on detonation. | 2nd Feb 1927 | Box 66a \ 1 scan0164 | |
| Report comparing the performance of exhaust heated systems against water heated systems for engines. | 2nd Feb 1927 | Box 66a \ 1 scan0165 | |
| Blueprint diagram labeled 'Fig 4.' showing a standard carburettor and intake manifold assembly. | 2nd Feb 1927 | Box 66a \ 1 scan0166 | |
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