| Description | Date | Identifier | |
| Chassis improvements covering engine firing, overheating, front spring stiffness, and steering. | 15th Apr 1925 | Box 24 \ 5 Scan006 | |
| Short memo forwarding a copy of another document from B.J. | 20th Apr 1925 | Box 24 \ 5 Scan007 | |
| Overheating issues with chassis No. 47-AU following the fitting of a new type of exhaust. | 18th Apr 1925 | Box 24 \ 5 Scan008 | |
| Suggestion for a comparative test to diagnose overheating issues on Mr. Gliksten's car by using the exhaust cutout. | 21th Apr 1925 | Box 24 \ 5 Scan009 | |
| Proposing a round-table discussion in Derby regarding overheating issues. | 23th Apr 1925 | Box 24 \ 5 Scan010 | |
| From CJ regarding the incorrect procedure followed for an overheating issue, clarifying departmental responsibilities and process. | 24th Apr 1925 | Box 24 \ 5 Scan011 | |
| Overheating issue in Australia, suspecting it's caused by a choked exhaust throttle and proposing a test and cable message. | 23th Apr 1925 | Box 24 \ 5 Scan012 | |
| The causes of over-heating in 40/50 HP cars with four-wheel brakes. | 27th Apr 1925 | Box 24 \ 5 Scan013 | |
| Modifying the choke valve controls to prevent overheating in six-cylinder engines. | 27th Apr 1925 | Box 24 \ 5 Scan014 | |
| From CJ clarifying a previous communication regarding a Sales Conference and the topic of overheating. | 27th Apr 1925 | Box 24 \ 5 Scan015 | |
| Overheating issues with the 40/50s models, focusing on the problems with exhaust heated throttles. | 28th Apr 1925 | Box 24 \ 5 Scan016 | |
| Suggestion to wire Australia with instructions to modify and retest a throttle system. | 28th Apr 1925 | Box 24 \ 5 Scan017 | |
| Replying to a memo about overheating on 40/50 cars, specifically concerning the fitting of 4-wheel brakes. | 28th Apr 1925 | Box 24 \ 5 Scan018 | |
| Vehicle braking, overheating issues, and performance in hot climates. | 28th Apr 1925 | Box 24 \ 5 Scan019 | |
| Car boiling issues, comparing models with and without 4-wheel brakes during tests in France and addressing complaints from Australia. | 28th Apr 1925 | Box 24 \ 5 Scan020 | |
| Cover memo for an attached report regarding overheating on 40/50 cars. | 28th Apr 1925 | Box 24 \ 5 Scan021 | |
| Overheating issues in Australia, testing a single branch exhaust system against a two-branch system on a 40/50 engine. | 9th Apr 1925 | Box 24 \ 5 Scan022 | |
| Investigating a potential overheating issue in a car, possibly due to a stuck exhaust butterfly baffle. | 25th Sep 1924 | Box 24 \ 5 Scan023 | |
| The overheating conditions of a 40/50 model vehicle. | 25th Sep 1924 | Box 24 \ 5 Scan024 | |
| Recommendation to prevent water boiling in 40/50 and EAC models by modifying the cooling system for hot climates. | 29th Apr 1925 | Box 24 \ 5 Scan025 | |
| The advantages and disadvantages of reverting to a water-heated throttle. | 1st May 1925 | Box 24 \ 5 Scan026 | |
| Findings on the exhaust heated throttle and choke valve. | 1st May 1925 | Box 24 \ 5 Scan027 | |
| Power reduction from a choke valve and a seasonal overheating issue in Australia. | 1st May 1925 | Box 24 \ 5 Scan028 | |
| Investigating over-heating, specifically testing if the choke valve in the exhaust is the cause. | 1st May 1925 | Box 24 \ 5 Scan029 | |
| Tests of heat flow to the cooling water with exhaust back pressure on an 'EAC' engine. | 29th Apr 1925 | Box 24 \ 5 Scan030 | |
| Results from three engine performance tests (A, B, C) and their corresponding curves. | 29th Apr 1925 | Box 24 \ 5 Scan031 | |
| The effects of exhaust back pressure on engine power and heat flow. | 29th Apr 1925 | Box 24 \ 5 Scan032 | |
| The effect of an exhaust down-pipe baffle on car overheating. | 30th Apr 1925 | Box 24 \ 5 Scan033 | |
| The effects of a restricted exhaust baffle on engine performance and cooling system temperature. | 30th Apr 1925 | Box 24 \ 5 Scan034 | |
| Analysing the effects of an exhaust baffle and butterfly system on engine temperature and performance. | 30th Apr 1925 | Box 24 \ 5 Scan035 | |
| Graph showing heat flow to cooling water versus brake horsepower for an E.A.C. engine at a constant speed of 1500 RPM. | 28th Apr 1925 | Box 24 \ 5 Scan036 | |
| Blank document page with a Print Room date stamp from Derby. | 1st May 1925 | Box 24 \ 5 Scan037 | |
| Graph of heat flow to cooling water versus increasing exhaust back pressure for an E.A.C. engine at 1500 RPM and 50 B.HP | 27th Apr 1925 | Box 24 \ 5 Scan038 | |
| The reverse side of a document with a date stamp. | 1st May 1925 | Box 24 \ 5 Scan039 | |
| Modifications to address overheating on 40/50 HP cars, including chassis and radiator changes. | 30th Apr 1925 | Box 24 \ 5 Scan040 | |
| Overheating complaints and planned experimental tests on the 40/50 model. | 30th Apr 1925 | Box 24 \ 5 Scan041 | |
| Decision to revert to water heating for the throttle on 40/50 and EAC models. | 1st May 1925 | Box 24 \ 5 Scan042 | |
| Increased petrol consumption in 40/50 HP cars with four-wheel brakes, questioning if it's due to the choke valve. | 4th May 1925 | Box 24 \ 5 Scan043 | |
| Seriousness of customer complaints about engine overheating. | 1st May 1925 | Box 24 \ 5 Scan044 | |
| Engine overheating, thermostat use, and cooling system component choices. | 5th May 1925 | Box 24 \ 5 Scan045 | |
| Radiator and fan design modifications proposed for the 'X' series vehicles. | 25th May 1925 | Box 24 \ 5 Scan046 | |
| Overheating, petrol consumption, and the effect of 4-wheel brakes on carburetter settings. | 25th May 1925 | Box 24 \ 5 Scan047 | |
| Complaints about engine over-heating, referencing seasonal issues in Australia and a previous report from 1916. | 1st May 1925 | Box 24 \ 5 Scan048 | |
| Overheating in the 20 HP model, referencing similar issues in the 40/50 HP 'Silver Ghost' and 'New Phantom'. | 6th May 1925 | Box 24 \ 5 Scan049 | |
| Requesting clarification on the definitions of 'normal' and 'loaded' vehicle states for ground clearance measurements. | 9th May 1925 | Box 24 \ 5 Scan050 | |
| Instance of a car overheating during an ascent on the Riviera. | 11th May 1925 | Box 24 \ 5 Scan051 | |
| Car overheating issues and proposing comparative tests with louvred bonnets and different shutter configurations. | 1st May 1925 | Box 24 \ 5 Scan052 | |
| Overheating in 'Silver Ghost' cars, suggesting a new faster fan as a solution. | 1st May 1925 | Box 24 \ 5 Scan053 | |
| Engine overheating, analysing the factors involved and referencing the 40/50 'Silver Ghost'. | 14th May 1925 | Box 24 \ 5 Scan054 | |
| Comparing engine overheating and cooling system efficiency against a Hispano Suiza engine. | 14th May 1925 | Box 24 \ 5 Scan055 | |
| Comparing the radiator and cooling systems of the 'Silver Ghost' and 'Hispano' cars. | 14th May 1925 | Box 24 \ 5 Scan056 | |
| Comparing the overheating issues and cooling systems of the 'Silver Ghost' and Hispano Suiza models. | 1st May 1925 | Box 24 \ 5 Scan057 | |
| The cooling system limitations and overheating issues of the 'Silver Ghost' car. | 14th May 1925 | Box 24 \ 5 Scan058 | |
| Page discussing the difficulties of testing for and predicting vehicle overheating issues. | 14th May 1925 | Box 24 \ 5 Scan059 | |
| Chart comparing overheating test results for the Silver Ghost and Hispano Suiza models. | 15th May 1925 | Box 24 \ 5 Scan060 | |
| Vehicle overheating complaint and comparing historical test data for different bonnet designs. | 14th May 1925 | Box 24 \ 5 Scan061 | |
| Engine overheating, focusing on fan belt tension and the effects of gear selection. | 14th May 1925 | Box 24 \ 5 Scan062 | |
| Cooling tests and the reasoning for abandoning louvered bonnets in favour of shuttered ones. | 14th May 1925 | Box 24 \ 5 Scan063 | |
| Continued discussion on the potential causes of a car overheating or boiling. | 14th May 1925 | Box 24 \ 5 Scan064 | |
| Chart comparing engine overheating test results for the Silver Ghost and Hispano Suiza models under various ventilation conditions. | 14th May 1925 | Box 24 \ 5 Scan065 | |
| Testing bonnets with and without louvres on different car models to assess overheating and noise. | 14th May 1925 | Box 24 \ 5 Scan066 | |
| Arranging a test for cars with and without louvres to address overheating. | 16th May 1925 | Box 24 \ 5 Scan067 | |
| Engine cooling and customer complaints of water boiling troubles. | 26th May 1925 | Box 24 \ 5 Scan068 | |
| How to handle customer complaints about engine overheating as summer approaches. | 25th May 1925 | Box 24 \ 5 Scan069 | |
| Proposed reduction in ground clearance for the 'Silver Ghost' and 'New Phantom' models, citing overheating and sales concerns. | 28th May 1925 | Box 24 \ 5 Scan070 | |
| Overheating issue in Mr. Glixten's car. | 4th Jun 1925 | Box 24 \ 5 Scan071 | |
| Page two of an experimental report discussing the effect of atmospheric temperature and vehicle weight on car performance. | 4th Jun 1925 | Box 24 \ 5 Scan072 | |
| Arranging noise comparison tests between a louvred and standard bonnet, and fitting an improved silencer to car 44-PK. | 10th Jun 1925 | Box 24 \ 5 Scan073 | |
| Arranging a noise comparison test between louvred and plain bonnets for an EAC 'V' Series car. | 11th Jun 1925 | Box 24 \ 5 Scan074 | |
| Overheating tests with louvred bonnets for the Silver Ghost and 20 HP models, highlighting the urgent need for the 20 HP for other experiments. | 15th Jun 1925 | Box 24 \ 5 Scan075 | |
| Sending a Silver Ghost (5-EX) to Conduit Street regarding an overheating issue, along with bonnets. | 17th Jun 1925 | Box 24 \ 5 Scan076 | |
| Overheating, arranging for louvered and plain bonnets to be sent for Silver Ghost and 20HP models. | 17th Jun 1925 | Box 24 \ 5 Scan077 | |
| Overheating, requesting bonnets for a 40/50HP 'Silver Ghost' and providing bonnet dimensions for 20HP cars. | 16th Jun 1925 | Box 24 \ 5 Scan078 | |
| Requesting the return of car 44-PK for experiments, suggesting a bonnet swap to release the vehicle. | 17th Jun 1925 | Box 24 \ 5 Scan079 | |
| Water boiling experiments comparing the New Phantom with the Silver Ghost. | 20th Jun 1925 | Box 24 \ 5 Scan080 | |
| Forwarding Lord Montagu's experiences on the cooling of water circulation in cars in India. | 1st Jul 1925 | Box 24 \ 5 Scan081 | |
| The experiences of Lord Montagu regarding vehicle water cooling systems in India. | 1st Jul 1925 | Box 24 \ 5 Scan082 | |
| Methods taken to reduce engine boiling by altering radiators and fan blades. | 1st Jul 1925 | Box 24 \ 5 Scan083 | |
| Page discussing experiments with fan designs and the fitting of radiator cowls to improve engine cooling. | 15th Jul 1925 | Box 24 \ 5 Scan084 | |
| Page of a memo discussing the use of cowls and larger radiators for vehicle cooling in India. | 15th Jul 1925 | Box 24 \ 5 Scan085 | |
| Engine overheating, discussing fan design, blade materials, and engine cowls. | 7th Jul 1925 | Box 24 \ 5 Scan086 | |
| Radiator efficiency, comparing airflow at slow speeds for lorries versus higher speeds for cars on mountain passes. | 18th Jun 1925 | Box 24 \ 5 Scan087 | |
| Factors affecting jacket water boiling and comparing the performance of different car models under various conditions. | 18th Jun 1925 | Box 24 \ 5 Scan088 | |
| Engine cooling systems, radiator shutters, and factors influencing engine boiling. | 18th Jun 1925 | Box 24 \ 5 Scan089 | |
| Engine cooling, comparing water loss from boiling during test drives in France with a Spanish trials car. | 18th Jun 1925 | Box 24 \ 5 Scan090 | |
| Tests conducted at Brooklands on a 98-NK Barker Open Touring 'V' Series car. | 1st Jul 1925 | Box 24 \ 5 Scan091 | |
| Short report on clutch spinning and acceleration test results. | 1st Jul 1925 | Box 24 \ 5 Scan092 | |
| The high-speed performance tests of the Phantom 'V' series at Brooklands. | 4th Jul 1925 | Box 24 \ 5 Scan093 | |
| Analysis of road wheel horsepower, speed, and the effects of exhaust cut-out and vehicle windage. | 4th Jul 1925 | Box 24 \ 5 Scan094 | |
| Performance test results for the EAC 'V' Series vehicle, analyzing horsepower and acceleration. | 4th Jul 1925 | Box 24 \ 5 Scan095 | |
| Performance analysis of a 'V' series car, detailing carburation, maximum speed, and tractive resistance with comparisons to Phantom and Silver Ghost models. | 4th Jul 1925 | Box 24 \ 5 Scan096 | |
| Report page detailing the results and analysis of vehicle braking tests. | 4th Jul 1925 | Box 24 \ 5 Scan097 | |
| Performance test report detailing car speed and lap times under various conditions. | 4th Jul 1925 | Box 24 \ 5 Scan098 | |
| Dynamometer curve data for chassis 98-NK before the Brooklands test. | 8th Aug 1925 | Box 24 \ 5 Scan099 | |
| Design and implementation of new bonnet louvres for the Phantom to solve overheating problems. | 8th Aug 1925 | Box 24 \ 5 Scan100 | |
| Water overheating during a test run of the 9-G-lll car in France. | 1st Aug 1925 | Box 24 \ 5 Scan101 | |
| Brooklands track tests with a 'V' series car. | 1st Aug 1925 | Box 24 \ 5 Scan102 | |
| Car cooling tests conducted at Brooklands, detailing the effects of ventilation, environmental conditions, and fan efficiency. | 1st Jul 1925 | Box 24 \ 5 Scan103 | |
| Tests on the fan drive and radiator shutter performance. | 25th Sep 1924 | Box 24 \ 5 Scan104 | |
| Brooklands tests, defining 'critical atmospheric temperature' for cooling systems. | 1st Aug 1925 | Box 24 \ 5 Scan105 | |
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