| Description | Date | Identifier | |
| Creation, format, and future use of an index for archive files. | 28th Jun 1991 | Box 177 \ 5 img151 | |
| Index listing cross-references, file numbers, box numbers, and subjects for boxfiles 74-81. | 28th Jun 1991 | Box 177 \ 5 img152 | |
| List of alphanumeric reference or part codes. | 28th Jun 1991 | Box 177 \ 5 img153 | |
| List of alphanumeric reference codes. | 28th Jun 1991 | Box 177 \ 5 img154 | |
| List of alphanumeric part or reference codes. | 11th Jan 1936 | Box 177 \ 5 img155 | |
| List of alphanumeric reference codes. | 11th Jan 1936 | Box 177 \ 5 img156 | |
| Letter regarding repairs to the cam followers of a Phantom II, chassis number 184 PY. | 1st Jan 1970 | Box 177 \ 6 img151 | |
| Letter responding to a customer's enquiries regarding a Wraith vehicle, its parts, and documentation. | 7th Jan 1970 | Box 177 \ 6 img152 | |
| Letter providing advice on sourcing parts and specialists for car restoration. | 7th Jan 1970 | Box 177 \ 6 img153 | |
| Letter to a customer regarding obtaining spare parts in the U.S.A. | 7th Jan 1970 | Box 177 \ 6 img154 | |
| Introductory memo about a series of reports on car performance to help officials handle customer complaints. | 1st May 1926 | Box 178 \ 1 img001 | |
| Index of various car performance and mechanical topics. | 12th Oct 1925 | Box 178 \ 1 img002 | |
| The fundamental points for judging car performance. | 12th Oct 1925 | Box 178 \ 1 img003 | |
| Explaining the relationship between car weight, engine power, and acceleration, illustrated with two graphs. | 12th Oct 1925 | Box 178 \ 1 img004 | |
| Page discussing tractive resistance, carburation, and flywheel inertia in relation to car performance and acceleration. | 12th Oct 1925 | Box 178 \ 1 img005 | |
| Engine torque curves and their effect on vehicle acceleration, comparing two different performance profiles. | 12th Oct 1925 | Box 178 \ 1 img006 | |
| Guide on comparing car efficiency by calculating displacement per ton mile and considering tractive resistance. | 12th Oct 1925 | Box 178 \ 1 img007 | |
| The effects of wind resistance and streamlining on car performance, leading into a section on hill climbing. | 12th Oct 1925 | Box 178 \ 1 img008 | |
| Vehicle hill climbing performance versus acceleration capabilities, with specific reference to the Phantom model. | 12th Oct 1925 | Box 178 \ 1 img009 | |
| Graph and text explaining the relationship between acceleration and surmountable gradients for hill climbing. | 12th Oct 1925 | Box 178 \ 1 img010 | |
| Page discussing high-speed performance, covering windage, exhausts, and streamlining, with an accompanying performance graph. | 12th Oct 1925 | Box 178 \ 1 img011 | |
| The effects of streamlining and gear ratios on car performance, referencing the Thomas Special car. | 12th Oct 1925 | Box 178 \ 1 img012 | |
| Explaining the effect of wind on the maximum speeds of touring cars. | 15th Feb 1926 | Box 178 \ 1 img013 | |
| Graph and analysis showing the effect of wind on a car's maximum speed and the required horsepower. | 15th Feb 1926 | Box 178 \ 1 img014 | |
| With a graph showing the horsepower required to overcome wind resistance at various road speeds. | 15th Feb 1926 | Box 178 \ 1 img015 | |
| Index outlining the fundamentals of car performance with a focus on the cooling system. | 15th Feb 1926 | Box 178 \ 1 img016 | |
| Explaining the general principles of heat generation and loss in a petrol engine, using the Silver Ghost as an example. | 15th Feb 1926 | Box 178 \ 1 img017 | |
| Technical explanation of the fundamental methods of heat dissipation in a cooling system, focusing on conduction and convection. | 15th Feb 1926 | Box 178 \ 1 img018 | |
| Engine cooling systems, heat dissipation, and heat generation factors in petrol engines. | 15th Feb 1926 | Box 178 \ 1 img019 | |
| Page discussing factors affecting engine cooling, including the influence of combustion chamber design. | 15th Feb 1926 | Box 178 \ 1 img020 | |
| Comparison of engine heat rejection and efficiency between Silver Ghost, Phantom, and Hispano engines via two graphs. | 15th Feb 1926 | Box 178 \ 1 img021 | |
| Page discussing engine compression ratios and their effect on heat transfer to the cooling system, including a graph of test results. | 15th Feb 1926 | Box 178 \ 1 img022 | |
| Page discussing engine dimensions, thermal losses, and radiator size, including a comparative graph. | 15th Feb 1926 | Box 178 \ 1 img023 | |
| The influence of fuel mixture strength on engine cooling, featuring a graph specific to a Silver Ghost engine. | 15th Feb 1926 | Box 178 \ 1 img024 | |
| Engine carbonisation, aluminium pistons, and conventional water cooling systems. | 15th Feb 1926 | Box 178 \ 1 img025 | |
| Technical analysis of how increasing water flow through the radiator core affects engine overheating and critical atmospheric temperature. | 15th Feb 1926 | Box 178 \ 1 img026 | |
| Page from a report on radiator efficiency, comparing the effects of rapid versus sluggish water circulation on heat dissipation. | 15th Feb 1926 | Box 178 \ 1 img027 | |
| Graph of radiator efficiency versus water flow, with a comparison of thermosyphon and pump circulation cooling systems. | 15th Feb 1926 | Box 178 \ 1 img028 | |
| Page discussing thermosyphon cooling systems and types of radiator cores. | 15th Feb 1926 | Box 178 \ 1 img029 | |
| Comparison of the efficiency of various radiator core designs, including diagrams and analysis. | 15th Feb 1926 | Box 178 \ 1 img030 | |
| Page discussing radiator core efficiency and the limiting efficient depth of the core, with a comparative chart. | 15th Feb 1926 | Box 178 \ 1 img031 | |
| The value of bonnet ventilation for radiator cooling efficiency, with test data from a Silver Ghost. | 15th Feb 1926 | Box 178 \ 1 img032 | |
| Page discussing engine cooling challenges in large cars and the possibilities and limitations of cooling fans. | 15th Feb 1926 | Box 178 \ 1 img033 | |
| Comparison of engine cooling fan performance, including a graph plotting thrust versus engine RPM for different fan models. | 15th Feb 1926 | Box 178 \ 1 img034 | |
| Comparison of relative strains on fan belts for different engine models, including a graph. | 15th Feb 1926 | Box 178 \ 1 img035 | |
| Page discussing engine fan design variations, including a performance comparison graph between two fan types. | 15th Feb 1926 | Box 178 \ 1 img036 | |
| The principles of water cooling under pressure, including a graph showing boiling point versus gauge pressure for a Silver Ghost radiator. | 15th Feb 1926 | Box 178 \ 1 img037 | |
| The method of pressurizing the water cooling system and its effect on efficiency, mentioning the R-R Silver Ghost. | 15th Feb 1926 | Box 178 \ 1 img038 | |
| The disadvantages of a cooling system and the principles of evaporative cooling. | 15th Feb 1926 | Box 178 \ 1 img039 | |
| Description of a steam-based engine cooling system using a gear pump, including an illustrative diagram. | 15th Feb 1926 | Box 178 \ 1 img040 | |
| Page from a report discussing the efficiency gain from using an evaporative engine cooling system. | 15th Feb 1926 | Box 178 \ 1 img041 | |
| List of the advantages and disadvantages of evaporative cooling systems. | 15th Feb 1926 | Box 178 \ 1 img042 | |
| Various engine cooling methods, including liquid and air cooling. | 15th Feb 1926 | Box 178 \ 1 img043 | |
| Methods for comparing the relative efficiency of car cooling systems. | 15th Feb 1926 | Box 178 \ 1 img044 | |
| Procedure for testing and comparing vehicle radiator performance during a hill climb. | 15th Feb 1926 | Box 178 \ 1 img045 | |
| Page outlining procedures for testing cars, including towing for hill climbing simulation and considerations for investigating cooling systems. | 25th Nov 1925 | Box 178 \ 1 img046 | |
| The method employed for petrol consumption tests on a New Phantom model. | 25th Nov 1925 | Box 178 \ 1 img047 | |
| The methodology and results of fuel consumption tests. | 21th Nov 1925 | Box 178 \ 1 img048 | |
| Page discussing factors that affect petrol consumption, such as engine friction, speed, and carburetter settings. | 21th Nov 1925 | Box 178 \ 1 img049 | |
| The fuel economy possibilities of the Phantom model. | 21th Nov 1925 | Box 178 \ 1 img050 | |
| Blueprint diagram for a flow meter to measure petrol consumption. | 21th Nov 1925 | Box 178 \ 1 img051 | |
| Car performance, focusing on petrol consumption and optimum driving speed. | 21th Nov 1925 | Box 178 \ 1 img052 | |
| Page illustrating the thermal efficiency curve of a 4-stroke petrol engine and discussing the performance of the Phantom model. | 21th Nov 1925 | Box 178 \ 1 img053 | |
| Gear ratios and their effect on car economy and road speed. | 21th Nov 1925 | Box 178 \ 1 img054 | |
| The effects of acceleration and four-wheel brakes on petrol consumption. | 21th Nov 1925 | Box 178 \ 1 img055 | |
| Carburation and petrol consumption, illustrated with a graph of typical curves for a 4-stroke petrol engine. | 21th Nov 1925 | Box 178 \ 1 img056 | |
| Carburettor settings and ignition advance, with a graph showing brake load versus spark advance. | 21th Nov 1925 | Box 178 \ 1 img057 | |
| Engine friction, rolling resistance, and factors affecting fuel consumption. | 21th Nov 1925 | Box 178 \ 1 img058 | |
| Two graphs showing the effects of speed, tyre pressure, and mixture control on petrol consumption. | 21th Nov 1925 | Box 178 \ 1 img059 | |
| Series of graphs showing the effect of ignition advance, axle ratio, and engine temperature on petrol consumption. | 21th Nov 1925 | Box 178 \ 1 img060 | |
| Theoretical and actual fuel economy improvements in M.P.G. for the Phantom model. | 26th Nov 1925 | Box 178 \ 1 img061 | |
| The action, adjustment, and limitations of the New Phantom carburetter. | 26th Nov 1925 | Box 178 \ 1 img062 | |
| Formula for the velocity of petrol flow. | 26th Nov 1925 | Box 178 \ 1 img063 | |
| Carburetter performance, focusing on air/petrol velocity and mixture richness in the New Phantom model. | 26th Nov 1925 | Box 178 \ 1 img064 | |
| Carburettor adjustments and conditions for a New Phantom carburetter. | 26th Nov 1925 | Box 178 \ 1 img065 | |
| With two graphs showing carburettor mixture control adjustments under different conditions. | 26th Nov 1925 | Box 178 \ 1 img066 | |
| Possible troubles caused by incorrect carburetter settings and the automatic range. | 26th Nov 1925 | Box 178 \ 1 img067 | |
| Carburettor adjustments, function at low speeds, and prerequisites for tuning. | 26th Nov 1925 | Box 178 \ 1 img068 | |
| Petrol grades, fuel supply, and carburettor adjustments. | 26th Nov 1925 | Box 178 \ 1 img069 | |
| The procedure for setting the low speed jet of a carburetter. | 26th Nov 1925 | Box 178 \ 1 img070 | |
| Carburettor mixture testing, troubleshooting, and performance comparison between Phantom and Silver Ghost models. | 26th Nov 1925 | Box 178 \ 1 img071 | |
| Troubleshooting guide listing engine running problems and their probable causes. | 26th Nov 1925 | Box 178 \ 1 img072 | |
| Page discussing the fundamental laws of vehicle braking, focusing on road surface friction and retardation. | 12th Oct 1925 | Box 178 \ 1 img073 | |
| The effects of vehicle weight and gradients on braking performance and stopping distances. | 12th Oct 1925 | Box 178 \ 1 img074 | |
| Analysing vehicle stopping distances and times, including a graph. | 12th Oct 1925 | Box 178 \ 1 img075 | |
| Pedal pressure required to lock wheels at high speeds and the limits of vehicle retardation for passenger comfort. | 12th Oct 1925 | Box 178 \ 1 img076 | |
| Blueprint containing two graphs showing practical braking figures obtained with a three-pen chronograph. | 12th Oct 1925 | Box 178 \ 1 img077 | |
| Two graphs illustrating the effect of brake distribution and road surface variation on vehicle stopping distance. | 9th Jul 1924 | Box 178 \ 1 img078 | |
| Description of the four-wheel braking system and its servo mechanism. | 9th Jul 1924 | Box 178 \ 1 img079 | |
| Description of an improved semi-servo four-wheel braking system, detailing its operation and the function of the servo components. | 9th Jul 1924 | Box 178 \ 1 img080 | |
| The operation and adjustment of a servo-assisted braking system with equalisers. | 9th Jul 1924 | Box 178 \ 1 img081 | |
| Instructions for setting up and adjusting the four-wheel brake system. | 8th Jul 1924 | Box 178 \ 1 img082 | |
| Instructions for brake adjustment, including serrated adjustment, toggle settings, and bedding. | 1st Jul 1924 | Box 178 \ 1 img083 | |
| Instructions for checking and adjusting brake pull levers, rods, and ropes. | 8th Jul 1924 | Box 178 \ 1 img084 | |
| Technical instructions for setting up rear brakes and servo systems on a 40/50 RR car. | 1st Jul 1924 | Box 178 \ 1 img085 | |
| Technical description of a servo mechanism's operation, adjustment, and maintenance. | 8th Jul 1924 | Box 178 \ 1 img086 | |
| Instructions for adjusting brake system components, including serrated adjustments, levers, and pedal movement. | 1st Jul 1924 | Box 178 \ 1 img087 | |
| Instructions for the adjustment of the four-wheel braking system. | 1st Jul 1924 | Box 178 \ 1 img088 | |
| Instructions for checking and adjusting the front brakes, including clearances and operating mechanism movements. | 1st Jul 1924 | Box 178 \ 1 img089 | |
| Instructions for checking front brake clearances and adjusting the servo. | 1st Jul 1924 | Box 178 \ 1 img090 | |
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