| Description | Date | Identifier | |
| Page from a service manual detailing cooling system checks and maintenance, focusing on the water pump and fan. | 1st Mar 1930 | Box 24 \ 5 Scan306 | |
| Factors affecting engine overheating, such as bonnet ventilation, fuel mixture strength, and the use of a cut-out. | 1st Aug 1930 | Box 24 \ 5 Scan307 | |
| Guidance on vehicle overheating, radiator shutters, and the function of the red warning light. | 1st Aug 1930 | Box 24 \ 5 Scan308 | |
| Customer overheating complaints and proposing a faster, double-pulley fan drive to improve cooling. | 3rd Mar 1930 | Box 24 \ 5 Scan309 | |
| The cooling performance of the Phantom II compared to competitor cars during the Fifth Brooklands Report. | 25th Aug 1930 | Box 24 \ 5 Scan310 | |
| Comparison of cooling system specifications and performance against competing car models. | 25th Aug 1930 | Box 24 \ 5 Scan311 | |
| Performance comparison report on 25 HP and 20 HP models, including maximum speed test data. | 25th Aug 1930 | Box 24 \ 5 Scan312 | |
| Page discussing gains from a 112º camshaft and higher compression. | 25th Aug 1930 | Box 24 \ 5 Scan313 | |
| Comparison of Face Area, Volume, and Temperature data for various car models. | 1st Sep 1930 | Box 24 \ 5 Scan314 | |
| Blueprint with two graphs comparing acceleration figures and speedometer calibrations for different cars. | 1st Sep 1930 | Box 24 \ 5 Scan315 | |
| Comparative data table of various cars, focusing on cooling system specifications and performance metrics. | 1st Sep 1930 | Box 24 \ 5 Scan316 | |
| Insufficient cooling on the Phantom II model and the inefficiency of its bonnet ventilators. | 1st Sep 1930 | Box 24 \ 5 Scan317 | |
| Explanation of the Phantom II's cooling system design, framed as a response to a customer's overheating complaint. | 1st Sep 1930 | Box 24 \ 5 Scan318 | |
| Instructions regarding the red warning lamp, cooling system boiling, and bonnet ventilation for different climates. | 3rd Sep 1930 | Box 24 \ 5 Scan319 | |
| Instructions regarding the engine's red warning lamp and driving on Continental roads. | 2nd Sep 1930 | Box 24 \ 5 Scan320 | |
| Retention of shutters on the Phantom 11 to aid cooling and address issues with excessive petrol heat. | 9th Sep 1930 | Box 24 \ 5 Scan321 | |
| Deletion and painting process of bonnet shutters. | 9th Jul 1927 | Box 24 \ 5 Scan322 | |
| Design changes for the 40/50 HP car bonnets. | 22th Jul 1937 | Box 24 \ 5 Scan323 | |
| Removal of rear shutters on cars not intended for tropical climates. | 30th Jun 1931 | Box 24 \ 5 Scan324 | |
| Phantom II overheating issues and proposing three modifications. | 4th Sep 1930 | Box 24 \ 5 Scan325 | |
| Overheating tests on the Phantom II, specifically investigating the modification of undershields. | 8th Sep 1930 | Box 24 \ 5 Scan326 | |
| Cooling performance issues and radiator modifications for the Phantom II car. | 9th Sep 1930 | Box 24 \ 5 Scan327 | |
| Concluding page of a comparison with the Phantom 11, stating a full report is in preparation. | 16th Sep 1930 | Box 24 \ 5 Scan328 | |
| Phantom II radiator cooling issues and a design change causing higher operating temperatures. | 16th Sep 1930 | Box 24 \ 5 Scan329 | |
| Radiator cooling issues on Phantom I & II models and the move to a more efficient square tube design. | 18th Sep 1930 | Box 24 \ 5 Scan330 | |
| Report comparing the efficiency of different radiator matrix types for the Phantom II model. | 24th Sep 1930 | Box 24 \ 5 Scan331 | |
| The efficiency of direct versus indirect radiator cooling systems with an accompanying graph. | 24th Sep 1930 | Box 24 \ 5 Scan332 | |
| Radiator efficiency, cooling performance, and an analysis of different radiator tube sizes. | 24th Feb 1930 | Box 24 \ 5 Scan333 | |
| Comparison of radiator tube designs, including round, square, and hexagon shapes, for efficiency and surface area. | 1st Jan 1938 | Box 24 \ 5 Scan334 | |
| Technical report discussing radiator tube thickness, engine temperatures, and conclusions for future radiator tests. | 24th Sep 1930 | Box 24 \ 5 Scan335 | |
| Analysis of the Chrysler radiator's design, noting its fine air passages and difficulty in cleaning. | 24th Sep 1930 | Box 24 \ 5 Scan336 | |
| Comparative table of radiator tube specifications and performance data. | 24th Sep 1930 | Box 24 \ 5 Scan337 | |
| Graph comparing the performance of three different types of radiator cores for slow-speed cooling. | 24th Sep 1930 | Box 24 \ 5 Scan338 | |
| Blank page with a 'Print Room' stamp. | 24th Sep 1930 | Box 24 \ 5 Scan339 | |
| Drawing and testing specifications for a square matrix tube. | 25th Sep 1930 | Box 24 \ 5 Scan340 | |
| Blank page with a purple ink stamp from the Print Room in Derby. | 25th Sep 1930 | Box 24 \ 5 Scan341 | |
| Improvements to the P.2 & 25HP car cooling system, including a new radiator design. | 29th Sep 1930 | Box 24 \ 5 Scan342 | |
| The development of a new square tube radiator and testing of louvres. | 30th Sep 1930 | Box 24 \ 5 Scan343 | |
| Proposed modifications to the vehicle cooling system, including the radiator and bonnet louvres. | 1st Oct 1930 | Box 24 \ 5 Scan344 | |
| Brief report on inconsistent test results for a square tube radiator being tested at Brooklands. | 7th Oct 1930 | Box 24 \ 5 Scan345 | |
| Requesting a repeat comparison test between a 6 m.m. parallel square tube radiator and a standard 6/7½ non-dented tube radiator. | 8th Oct 1930 | Box 24 \ 5 Scan346 | |
| Overheating complaints on 20 Hp. cars and the results of tests on a Phantom II to assess the cooling effect of a louvered bonnet. | 8th Oct 1930 | Box 24 \ 5 Scan347 | |
| Car overheating issues, referencing customer feedback and experiments with square tubed Gallay radiators. | 13th Oct 1930 | Box 24 \ 5 Scan348 | |
| Sixth Brooklands report on a series of tests on six different types of radiator core. | 4th Oct 1930 | Box 24 \ 5 Scan349 | |
| Radiator tube tests, comparing square, parallel, and turbulent air flow designs. | 4th Oct 1930 | Box 24 \ 5 Scan350 | |
| Technical comparison of different radiator tubes and a Gallay radiator core. | 4th Oct 1930 | Box 24 \ 5 Scan351 | |
| Radiator tube design, comparing samples from Rolls-Royce of America and others to improve cooling efficiency. | 14th Oct 1930 | Box 24 \ 5 Scan352 | |
| Comparison of square and round radiator tubes at full throttle and low speeds. | 14th Oct 1930 | Box 24 \ 5 Scan353 | |
| Comparative table of radiator performance and specifications under various test conditions. | 14th Oct 1930 | Box 24 \ 5 Scan354 | |
| Graph plotting hydraulic restriction of a tube radiator, showing delivery and pump suction pressure against engine RPM. | 14th Oct 1930 | Box 24 \ 5 Scan355 | |
| Superseded document from the Test Room, marked as a copy. | 14th Oct 1930 | Box 24 \ 5 Scan356 | |
| Graph detailing the results of water flow tests on a P.I. No. 7 unit with a standard radiator. | 14th Oct 1930 | Box 24 \ 5 Scan357 | |
| Page with a purple ink date stamp from the Test Room. | 14th Oct 1930 | Box 24 \ 5 Scan358 | |
| Improving radiator efficiency to prevent overheating by adding indentations to the tubes. | 14th Oct 1930 | Box 24 \ 5 Scan359 | |
| Design improvements for radiators, bonnets, overflow valves, and vents. | 14th Oct 1930 | Box 24 \ 5 Scan360 | |
| Efficiency of indented radiator tubes to solve an overheating issue. | 15th Oct 1930 | Box 24 \ 5 Scan361 | |
| On resolving overheating issues by modifying radiator tubes with indentations for increased efficiency. | 18th Oct 1930 | Box 24 \ 5 Scan362 | |
| Table of results from radiator performance tests conducted at Brooklands at various speeds and throttle settings. | 20th Oct 1930 | Box 24 \ 5 Scan363 | |
| Results of tests on different radiator tubes and louvred bonnets. | 20th Oct 1930 | Box 24 \ 5 Scan364 | |
| Improving radiator efficiency and cost by using 7 m.m. square tubes with bulges for turbulence. | 20th Oct 1930 | Box 24 \ 5 Scan365 | |
| Table comparing critical atmospheric temperatures for different radiator types causing overheating under various driving conditions. | 21th Oct 1930 | Box 24 \ 5 Scan366 | |
| Immediate implementation of a tube indentation modification to address an overheating issue. | 21th Oct 1930 | Box 24 \ 5 Scan367 | |
| The modification of radiator tubes with indents to resolve overheating issues. | 25th Oct 1930 | Box 24 \ 5 Scan368 | |
| Confirming agreement to proceed with a modification to radiator tubes regarding an overheating issue. | 27th Oct 1930 | Box 24 \ 5 Scan369 | |
| Square versus round radiator tubes and the design of bonnet vents and shutters. | 27th Oct 1930 | Box 24 \ 5 Scan370 | |
| Efficiency of square versus round radiator tubes and bonnet ventilation designs. | 30th Oct 1930 | Box 24 \ 5 Scan371 | |
| Radiator and acceleration tests conducted at Brooklands. | 31th Oct 1930 | Box 24 \ 5 Scan372 | |
| Test report on a thermostat marked 'A', detailing water temperature readings and jamming issues. | 20th Nov 1930 | Box 24 \ 5 Scan373 | |
| Diagrammatic scheme of a cooling plant for the proposed application of evaporative cooling to a Phantom II engine for use in tanks. | 1st Oct 1928 | Box 25 \ 1 Scan001 | |
| Potential use of the Phantom II engine for a new tank design. | 24th Oct 1929 | Box 25 \ 1 Scan002 | |
| Preliminary investigation into using an evaporatively cooled Phantom II engine as a power unit in tanks. | 31th Oct 1929 | Box 25 \ 1 Scan003 | |
| Calculations for heat dissipation and condenser design for Phantom engines. | 31th Oct 1929 | Box 25 \ 1 Scan004 | |
| Calculations and proposals for a cooling fan and tube block design. | 31th Oct 1929 | Box 25 \ 1 Scan005 | |
| Horsepower calculations and a proposal for an evaporative cooling system on a Phantom II engine. | 31th Oct 1929 | Box 25 \ 1 Scan006 | |
| Cover letter accompanying a brake horsepower curve chart for the standard production Phantom 11 engine for tanks. | 6th Nov 1929 | Box 25 \ 1 Scan007 | |
| Visit to Woolwich Arsenal and Short Bros. to discuss installing an evaporatively-cooled Phantom II engine in tanks. | 17th Jan 1930 | Box 25 \ 1 Scan008 | |
| Proposal for the installation of a Phantom II engine into a Mark I Light Tank, outlining the scheme and necessary tests. | 23th Apr 1930 | Box 25 \ 1 Scan009 | |
| Page 2 of a document detailing specifications for a condenser, air inlet, water header tank, and hot well pump. | 23th Apr 1930 | Box 25 \ 1 Scan010 | |
| Engine design considerations for oil circulation, exhaust pipes, and general accessibility. | 23th Apr 1930 | Box 25 \ 1 Scan011 | |
| Suggestion to use a J.1 Head on a 20/25 HP Tank Engine. | 9th Mar 1932 | Box 25 \ 1 Scan012 | |
| Test for an improved water pump for the 20/25 HP tank engine to increase cooling. | 11th Mar 1932 | Box 25 \ 1 Scan013 | |
| Confirming tests on a 20/25 HP Tank Engine, focusing on performance when inclined. | 11th Mar 1932 | Box 25 \ 1 Scan014 | |
| Oil leak tests conducted on an inclined 20/25 HP Tank Engine. | 14th Mar 1932 | Box 25 \ 1 Scan015 | |
| Test results for a new 20/25HP tank engine water pump, showing a 65% increase in water flow. | 22th Mar 1932 | Box 25 \ 1 Scan016 | |
| Graph of water flow versus engine RPM for a 3' diameter rotor, large volute, 25 HP pump. | 19th Mar 1932 | Box 25 \ 1 Scan017 | |
| Stamped document from the Print Room in Derby. | 22th Mar 1932 | Box 25 \ 1 Scan018 | |
| Oil heat and mechanical efficiency tests for a 20/25 tank engine. | 23th Mar 1932 | Box 25 \ 1 Scan019 | |
| Completed arrangement of a 3-gallon oil tank and fittings for a 20/25 HP tank engine. | 24th Mar 1932 | Box 25 \ 1 Scan020 | |
| The lubricant and service intervals for a 'Wilson' Gearbox in a Light Tank. | 31th Mar 1932 | Box 25 \ 1 Scan021 | |
| Schedule of tests for running in and evaluating a Light Tank's gearbox, transmission, and installation. | 6th Apr 1932 | Box 25 \ 1 Scan022 | |
| List of proposed engine and tank testing procedures, including gradient, routine, and bench tests. | 22th Apr 1932 | Box 25 \ 1 Scan023 | |
| Test results for a tank oil pump, detailing delivery rates and relief pressures. | 22th Apr 1932 | Box 25 \ 1 Scan024 | |
| Blueprint graph plotting pump delivery against pump speed for a tank oil pump. | 5th Apr 1932 | Box 25 \ 1 Scan025 | |
| Heavily faded typed document with a purple ink stamp from the print room. | 23th Apr 1932 | Box 25 \ 1 Scan026 | |
| Recent cooling trials of a 20/25 HP engine in a light tank. | 6th Sep 1932 | Box 25 \ 1 Scan027 | |
| Details on spring-loading radiators, fan horsepower, and a War Office request for valve schematics. | 6th Sep 1932 | Box 25 \ 1 Scan028 | |
| Performance graph for a 20/25 HP engine showing BHP and temperatures against RPM, with and without a fan. | 5th Sep 1932 | Box 25 \ 1 Scan029 | |
| The reverse of a folded document with a Print Room receipt stamp and handwritten note. | 6th Sep 1932 | Box 25 \ 1 Scan030 | |
| Dynamo failures experienced in light tanks fitted with 20/25 HP engines. | 20th Sep 1935 | Box 25 \ 1 Scan031 | |
| Investigation into cable screening failures, specifically braiding damage and insulation perishing on tanks. | 20th Mar 1935 | Box 25 \ 1 Scan032 | |
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