| Description | Date | Identifier | |
| The difficulties in testing cooling systems and proposing new methods for radiator comparisons. | 25th Nov 1924 | Box 24 \ 5 Scan106 | |
| Report page detailing radiator cooling efficiency tests, referencing Newton's Law of Cooling and Method 'B'. | 25th Nov 1924 | Box 24 \ 5 Scan107 | |
| Continued description of a testing methodology for radiator efficiency and simulating hill climbing conditions on level ground. | 25th Nov 1924 | Box 24 \ 5 Scan108 | |
| Page detailing radiator water temperature differences and the critical atmospheric temperature for boiling. | 25th Nov 1924 | Box 24 \ 5 Scan109 | |
| Forwarding the minutes of a Sales Conference. | 5th Sep 1925 | Box 24 \ 5 Scan110 | |
| Sales conference minute discussing the water overheating issue in the 20 HP model. | 18th Nov 1925 | Box 24 \ 5 Scan111 | |
| Overheating complaint on a 40/50 HP Chassis 14-TM belonging to Juan Correa. | 18th Nov 1925 | Box 24 \ 5 Scan112 | |
| Radiator boiling issue on Chassis No. 63-AU, possibly caused by fitted shutters. | 30th Nov 1925 | Box 24 \ 5 Scan113 | |
| Criticizing the design and control method of radiator shutters and their effectiveness in preventing boiling. | 19th Nov 1925 | Box 24 \ 5 Scan114 | |
| Draft memorandum advising against fitting certain Bowden wire-operated radiator shutters to Silver Ghost cars. | 25th Nov 1925 | Box 24 \ 5 Scan115 | |
| Arrangement of water connections for Series V & P.W. | 10th Nov 1934 | Box 24 \ 5 Scan116 | |
| The design and performance of radiator shutters, comparing them to third-party options. | 1st Dec 1925 | Box 24 \ 5 Scan117 | |
| Overheating and cooling tests for chassis No. 14-TM. | 9th Dec 1925 | Box 24 \ 5 Scan118 | |
| Schemes for improving carburation by increasing the temperature of the throttle valve and carburetter. | 17th Dec 1925 | Box 24 \ 5 Scan119 | |
| Modification to a Phantom's cooling system to run under pressure. | 18th Jan 1926 | Box 24 \ 5 Scan120 | |
| Merits of a whistle versus a red lamp to warn of a boiling radiator. | 28th Apr 1926 | Box 24 \ 5 Scan121 | |
| Indicator to show when water is boiling using a thermometer from the Cambridge Instrument Co. | 1st Apr 1926 | Box 24 \ 5 Scan122 | |
| Responding to a query about increasing the cooling capacity on Phantom cars. | 2nd Jul 1926 | Box 24 \ 5 Scan123 | |
| Limitations of the water cooling system in Phantom models and considering alternative methods. | 24th Aug 1926 | Box 24 \ 5 Scan124 | |
| Typed memorandum discussing a steam-based cooling system with a safety valve. | 25th Aug 1926 | Box 24 \ 5 Scan125 | |
| Engine cooling on the Phantom, comparing it to the Silver Ghost and referencing experiments with different cooling systems. | 25th Aug 1926 | Box 24 \ 5 Scan126 | |
| Engine over-heating issues on Phantom models and a proposed solution involving a pressure system. | 26th Aug 1926 | Box 24 \ 5 Scan127 | |
| Trial of a lightened axle and hydraulic dampers on car 8-EX, and a request for sketches of the pressure cooling system from car 10-EX. | 26th Aug 1926 | Box 24 \ 5 Scan128 | |
| Overheating tests in France, comparing the fan and radiator positions on experimental cars 8-EX and 12-EX. | 21th Sep 1926 | Box 24 \ 5 Scan129 | |
| Correcting a previous reference from 8-EX to 12-EX concerning tests on over-heating in France. | 22th Sep 1926 | Box 24 \ 5 Scan130 | |
| CWB to Hs. discussing the superior cooling performance of the 12-EX model and potential modifications. | 30th Sep 1926 | Box 24 \ 5 Scan131 | |
| Comparing the 12-EX car's cooling system to the standard Phantom, concluding pressure cooling is an unnecessary complication. | 1st Oct 1926 | Box 24 \ 5 Scan132 | |
| Power curve graph comparing a steam cooling system and standard water cooling. | 10th Feb 1926 | Box 24 \ 5 Scan133 | |
| Cover sheet with handwritten reference numbers and a company stamp. | 27th Sep 1926 | Box 24 \ 5 Scan134 | |
| Modifications to radiator design and dimensions, including integral shutters and a comparison of front areas for various models. | 25th Jan 1927 | Box 24 \ 5 Scan135 | |
| Analysis of radiator cooling performance, comparing revisions of the EAC.8 radiator with different tube dimensions. | 17th Feb 1925 | Box 24 \ 5 Scan136 | |
| Fan position tests on the 12-EX to increase cooling efficiency and its potential application to Phantom models. | 25th Apr 1927 | Box 24 \ 5 Scan137 | |
| Use, necessity, and cost of bonnet shutters versus louvres on the 40/50 HP chassis. | 20th Jun 1927 | Box 24 \ 5 Scan138 | |
| Cost and simplification of 40/50 bonnet shutters and louvres. | 23th Jun 1927 | Box 24 \ 5 Scan139 | |
| Removal of rear shutters from a standard car model not intended for tropical climates. | 30th Jun 1927 | Box 24 \ 5 Scan140 | |
| Temperature tests at Brooklands comparing the effects of different car alterations on temperature and performance. | 12th Sep 1927 | Box 24 \ 5 Scan141 | |
| Technical comparison of the 10-EX and a standard car's cooling system, with conclusions on ventilation. | 12th Sep 1927 | Box 24 \ 5 Scan142 | |
| Summary of temperature tests conducted at Brooklands under various car conditions. | 19th Sep 1927 | Box 24 \ 5 Scan143 | |
| High-speed cooling tests comparing shutters to a louvered bonnet for a sports car. | 19th Sep 1927 | Box 24 \ 5 Scan144 | |
| Suitability and reliability of automatically controlled radiator shutters. | 24th Sep 1927 | Box 24 \ 5 Scan145 | |
| Technical bulletin discussing engine overheating caused by choking of the radiator core from hard water deposits. | 24th Jan 1928 | Box 24 \ 5 Scan146 | |
| Methods for testing radiator obstructions and cleaning the core with a chemical preparation. | 24th Jan 1928 | Box 24 \ 5 Scan147 | |
| Instructions for cleaning radiators with 'Kleenwell' and a recommendation to use soft water to prevent choking. | 24th Jan 1928 | Box 24 \ 5 Scan148 | |
| Graph illustrating water circulation flow rates in a complete water system against engine RPM. | 23th Jan 1928 | Box 24 \ 5 Scan149 | |
| The reverse of a document or photograph with a date stamp from the print room. | 23th Jan 1928 | Box 24 \ 5 Scan150 | |
| Blueprint detailing two methods for testing radiator efficiency and system restriction. | 23th Jan 1928 | Box 24 \ 5 Scan151 | |
| Blueprint detailing the design and dimensions of a Water Venturimeter. | 16th Jul 1928 | Box 24 \ 5 Scan152 | |
| Table and calculations showing the relationship between water's boiling point, pressure, and head. | 16th Jul 1928 | Box 24 \ 5 Scan153 | |
| Overheating issues of the 20 HP fan and potential improvements. | 17th Jul 1928 | Box 24 \ 5 Scan154 | |
| Depot sheet discussing procedures for addressing car over-heating by cleaning oxide deposits from cylinder blocks. | 9th Apr 1929 | Box 24 \ 5 Scan155 | |
| Obstructed radiators and boiling, including a specific case involving black slime and a note on anti-freeze solutions. | 1st May 1929 | Box 24 \ 5 Scan156 | |
| Cooling tests and proposed improvements for the 20 HP car. | 1st May 1929 | Box 24 \ 5 Scan157 | |
| Comparison of radiator specifications and performance expectations for various car models. | 27th May 1929 | Box 24 \ 5 Scan158 | |
| Loan of 'SS' Car 19-EX for opinions and addressing an overheating complaint. | 27th May 1929 | Box 24 \ 5 Scan159 | |
| Comparative analysis of the radiator cooling system on 'SS' cars versus Phantom models. | 27th May 1929 | Box 24 \ 5 Scan160 | |
| High-speed test report comparing bonnet ventilation and cooling performance to address vehicle overheating issues. | 12th Jun 1927 | Box 24 \ 5 Scan161 | |
| Comparison of car performance regarding overheating and the effectiveness of louvred bonnets. | 27th May 1929 | Box 24 \ 5 Scan162 | |
| Comparison of engine water temperatures during a hill climb test for three car models, with corresponding radiator specifications. | 27th May 1929 | Box 24 \ 5 Scan163 | |
| Largely blank document page stamped by the print room. | 29th May 1929 | Box 24 \ 5 Scan164 | |
| Letter discussing proposed performance tests in the mountains of France for chassis 21-EX. | 7th Jun 1929 | Box 24 \ 5 Scan165 | |
| Plans and rationale for testing the 21-EX car's cooling system against the Phantom. | 11th Jun 1929 | Box 24 \ 5 Scan166 | |
| Vehicle's performance during a road trip from Bourges to Grenoble, detailing speed and steering issues. | 24th Jun 1929 | Box 24 \ 5 Scan167 | |
| Road test report detailing water temperature, brake adjustments, and fuel consumption during a journey through France. | 24th Jun 1929 | Box 24 \ 5 Scan168 | |
| Letter regarding cooling tests for the 20 HP, 17-G type chassis, and potential modifications. | 25th Jun 1929 | Box 24 \ 5 Scan169 | |
| Vehicle modifications regarding shock damper lubrication, steering flow, and issues with fuel starvation at high speeds. | 25th Jun 1929 | Box 24 \ 5 Scan170 | |
| Report from Grenoble detailing a car test run on mountain roads, including a temperature test. | 25th Jun 1929 | Box 24 \ 5 Scan171 | |
| Vehicle performance metrics and observed mechanical faults during a road test. | 25th Jun 1929 | Box 24 \ 5 Scan172 | |
| Vehicle's performance during mountain ascents of the Col du Lauteret and Col du Galibier. | 26th Jun 1929 | Box 24 \ 5 Scan173 | |
| Test climb of the Galibier pass, detailing performance and a body boom issue. | 26th Jun 1929 | Box 24 \ 5 Scan174 | |
| Letter on Hotel Majestic Grenoble letterhead detailing a test drive of an Invicta car up the Col du Porte. | 27th Jun 1929 | Box 24 \ 5 Scan175 | |
| Engine boiling after a 2000ft climb, with observations on competitor vehicle testing. | 24th Jun 1929 | Box 24 \ 5 Scan176 | |
| Road test in the French Alps, detailing engine performance and cooling. | 28th Jun 1929 | Box 24 \ 5 Scan177 | |
| Road test report detailing vehicle cooling, tyre wear on mountain roads, and daily running statistics. | 28th Jun 1929 | Box 24 \ 5 Scan178 | |
| Instructions for experimental car testing regarding cooling, engine noise, body booming, and squeaking servos. | 1st Jun 1929 | Box 24 \ 5 Scan179 | |
| Servo squeaking and a proposal to test a Phantom front axle on an S.S. model to improve steering. | 1st Jun 1929 | Box 24 \ 5 Scan180 | |
| Cooling system issues and proposed improvements for SS cars. | 1st Jun 1929 | Box 24 \ 5 Scan181 | |
| Instructions for research work and testing on a vehicle, including fan position, axle, engine mountings, and steering. | 29th Jun 1929 | Box 24 \ 5 Scan182 | |
| Vehicle's performance during a mountain climb in France, written on hotel letterhead. | 29th Jun 1929 | Box 24 \ 5 Scan183 | |
| Brake improvements, mileage, and petrol consumption. | 29th Jun 1929 | Box 24 \ 5 Scan184 | |
| Results of 20 HP cooling tests in France, particularly for the 21-EX model. | 1st Jul 1929 | Box 24 \ 5 Scan185 | |
| Letter from Grenoble detailing a hill climb test to Le Revard to check the engine's water temperature. | 1st Sep 1929 | Box 24 \ 5 Scan186 | |
| Journey's itinerary, mileage, and petrol consumption. | 1st Jul 1929 | Box 24 \ 5 Scan187 | |
| Issues with choked radiators and recommending new S.S. radiator tubes and stricter production testing. | 24th Jul 1929 | Box 24 \ 5 Scan188 | |
| Investigation into complaints of radiators becoming choked in service on F.2 B series cars. | 26th Jul 1929 | Box 24 \ 5 Scan189 | |
| The hydraulic restriction and cooling efficiency of a gap radiator matrix. | 7th Aug 1929 | Box 24 \ 5 Scan190 | |
| Recommendation on radiator tube selection for the S.S. model based on comparative cooling capacity tests. | 7th Aug 1929 | Box 24 \ 5 Scan191 | |
| Radiator boiling issues on Phantom models, related to the spacing between radiator tubes. | 20th Aug 1929 | Box 24 \ 5 Scan192 | |
| Technical memorandum discussing facts about car cooling systems, radiator obstructions, and hydraulic restrictions. | 31th Aug 1929 | Box 24 \ 5 Scan193 | |
| Analysis of cooling system inefficiencies related to boiling, pump design, electrolytic corrosion, and radiator tube blockage. | 31th Aug 1929 | Box 24 \ 5 Scan194 | |
| Radiator outlet design and filter performance, including a diagram of a filter with a cleaning connection. | 21th Aug 1929 | Box 24 \ 5 Scan195 | |
| Graph showing the effect of temperature on circulation through an SS Radiator with 6/7 m/m tubes. | 21th Aug 1929 | Box 24 \ 5 Scan196 | |
| Test report comparing water flow restriction through various radiator types and configurations. | 13th Jun 1929 | Box 24 \ 5 Scan197 | |
| Dimensional drawing and table for radiator matrix and tubes for various models. | 13th Jun 1929 | Box 24 \ 5 Scan198 | |
| Blueprint diagram of a radiator test rig. | 23th Aug 1920 | Box 24 \ 5 Scan199 | |
| Choking issue in cooling systems by comparing the gap area and hydraulic mean depths of different series of tubes. | 24th Aug 1929 | Box 24 \ 5 Scan200 | |
| Radiator design, specifically concerning the top tank, tubes, flanges, and the potential addition of a filter. | 26th Aug 1929 | Box 24 \ 5 Scan201 | |
| Recommendations to prevent radiator blockages using distilled water and sodium phosphate. | 26th Aug 1929 | Box 24 \ 5 Scan202 | |
| Procedure for cleaning and repairing blocked radiators. | 26th Aug 1929 | Box 24 \ 5 Scan203 | |
| Proposal for a pamphlet detailing a new water system cleaning procedure using sodium phosphate. | 26th Aug 1929 | Box 24 \ 5 Scan204 | |
| Hydraulic resistance and choking issues in F2B, S.S., and V series radiators. | 30th Aug 1929 | Box 24 \ 5 Scan205 | |
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