Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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DescriptionDateIdentifier
Supplier's (Greenwood & Batley Ltd.) response to reported failures in 'D' section radiator tubes.7th Jun 1920Box 38 \ 2  Scan102
Tests carried out on thermostat controls and bye-pass holes to prevent radiator freezing.9th Jun 1920Box 38 \ 2  Scan103
Continued note on engine temperature and the conditions under which a radiator might freeze.8th Jun 1920Box 38 \ 2  Scan104
Comparative times for engine water heat-up under no load with different thermostat and bye-pass configurations.26th Jun 1919Box 38 \ 2  Scan105
Confirmation to proceed with an order for a further 125 Marsden type radiators for the 40/50 chassis.26th Jun 1919Box 38 \ 2  Scan106
Parts fitted to experimental cars 4.EX and 6.EX.1st Jul 1920Box 38 \ 2  Scan107
Using copper versus brass tubing for radiators in the U.S.A. due to corrosion concerns.27th Jul 1920Box 38 \ 2  Scan108
Investigation into using copper instead of brass for radiator tubes due to water quality issues.27th Jul 1920Box 38 \ 2  Scan109
Unsuitability of brass radiator tubes in the Western US due to alkaline water, proposing tests and comparing materials.28th Jul 1920Box 38 \ 2  Scan110
Request to obtain Boilerine Tablets from the Shell Co. for preventing lime deposit and corrosion in radiators.29th Jul 1920Box 38 \ 2  Scan111
Issues with collapsing copper radiator tubes and advocating for the continued use of brass tubes.29th Jul 1920Box 38 \ 2  Scan112
Recommendation to adopt Ferodo bon-rest material instead of brass wearing strips on the 40/50 chassis bonnet.30th Jul 1920Box 38 \ 2  Scan113
Advantages and disadvantages of fitting a thermostat control, focusing on the risk of the radiator freezing.3rd Aug 1920Box 38 \ 2  Scan114
Questioning the reliability, cost, and implementation of a new thermostat control for water temperature.2nd Jul 1920Box 38 \ 2  Scan115
Laboratory report on corrosion tests of a brass tube in hard water and various chemical solutions.5th Aug 1920Box 38 \ 2  Scan116
Laboratory memo on corrosion tests for radiator tubes, comparing electrolytic copper, copper with arsenic, and brass.1st Aug 1920Box 38 \ 2  Scan117
Continuation page of a document concerning trouble with water.11th Aug 1920Box 38 \ 2  Scan118
Water loss in faulty radiators and a proposed solution.16th Aug 1920Box 38 \ 2  Scan119
From the Experimental Department questioning the necessity of bonnet shutters for cars used in America.21th Sep 1920Box 38 \ 2  Scan120
Recommending to stop using aero engine rubber hose on car engines due to poor durability compared to standard parts.27th Sep 1920Box 38 \ 2  Scan121
Component issues and requests for vehicles supplied to the American market.11th Nov 1920Box 38 \ 2  Scan122
Petrol systems, spring shackle clearances, and radiator materials.11th Nov 1920Box 38 \ 2  Scan123
Potential use of Monel metal as a superior alternative to nickel brass for certain vehicle parts, weighing quality against cost.23th Dec 1920Box 38 \ 2  Scan124
The superiority of a nickel-copper alloy over a zinc-based alloy for chassis construction.23th Dec 1920Box 38 \ 2  Scan125
Internal memorandum regarding a trial sample of All's Well Anti-Freezing Compound for production tests.10th Jan 1921Box 38 \ 2  Scan126
Letter advising against the use of thermostats in water circulation systems due to issues with alcohol-based antifreeze.28th Jan 1921Box 38 \ 2  Scan127
Cold weather engine cooling issues involving thermostats, radiators, and the use of radiator shutters.28th Jan 1921Box 38 \ 2  Scan128
Thermostat-controlled shutters and bypass systems for car radiators.28th Jan 1921Box 38 \ 2  Scan129
Proposal and ordering 12,000 tubes for experimental chassis radiators.4th Feb 1921Box 38 \ 2  Scan130
'Winterfront' radiator shutters observed on cars in New York and available for purchase in the U.S.A.4th Feb 1921Box 38 \ 2  Scan131
Use of thermostats, radiator shutters, and anti-freeze in U.S.A. cars.29th Jan 1922Box 38 \ 2  Scan132
Radiator shutter controls, water temperature limits for alcohol coolant, and thermostat-operated shutters on American cars.14th Feb 1921Box 38 \ 2  Scan133
To R.R. of America discussing the use of thermostats versus hand-operated radiator shutters on the chassis.2nd Feb 1921Box 38 \ 2  Scan134
Design, issues, and alternatives for the thermostat and bypass system.15th Feb 1921Box 38 \ 2  Scan135
The design and placement of radiator louvres and their control system.15th Feb 1921Box 38 \ 2  Scan136
Confirming the decision to standardise thermostat-operated shutters rather than introduce a thermostat bypass.15th Feb 1921Box 38 \ 2  Scan137
Modifications to the 40/50 HP model to handle a lower grade of petrol.2nd Feb 1921Box 38 \ 2  Scan138
Continued discussion on heating the induction pipe for fuel vaporization and improving engine aesthetics.22th Feb 1921Box 38 \ 2  Scan139
Letter discussing thermostat-operated shutters, comparing American car solutions and considering a proprietary design.3rd Mar 1921Box 38 \ 2  Scan140
Comparison of different radiator thermostat and shutter systems, including Galli-ator and Columbia schemes.3rd Mar 1921Box 38 \ 2  Scan141
Radiator freezing issues and the proposal for developing automatic shutters to improve winter performance.3rd Mar 1921Box 38 \ 2  Scan142
Issues with the top radiator bracket being too springy on cars with high radiators.8th Mar 1921Box 38 \ 2  Scan143
Potential cost-saving benefits of using American extruded copper radiator tubes over brass drawn tubes.24th Mar 1921Box 38 \ 2  Scan144
Redesigning the 40/50 HP radiator suspension brackets from drop forgings to sheet metal.31th Mar 1921Box 38 \ 2  Scan145
Testing extruded copper tubes for radiators as a cheaper alternative to brass drawn tubes.11th Apr 1921Box 38 \ 2  Scan146
Supply and cost comparison of extruded copper tubes for radiators.14th Apr 1921Box 38 \ 2  Scan147
Proposing an experiment to reduce thermostat 'hunting' by repositioning it.14th Apr 1921Box 38 \ 2  Scan148
Inquiry regarding the need for a larger radiator for a chassis to handle a 16-mile climb in 120°F temperatures without boiling.9th May 1921Box 38 \ 2  Scan149
Extract concerning U.S.A. complaints about vehicle starting and running issues due to low-grade fuel and cold winters.8th Jun 1921Box 38 \ 2  Scan150
Engine modifications related to carburetter position and induction system heating.8th Jun 1921Box 38 \ 2  Scan151
Improving engine starting by using a small additional carburetter instead of a choke.8th Jun 1921Box 38 \ 2  Scan152
Design improvement for the new 20 HP chassis.1st Jun 1921Box 38 \ 2  Scan153
Comparing the anti-tarnishing properties of Monel Metal and nickel silver for radiator construction.24th Jun 1921Box 38 \ 2  Scan154
Extruded copper tubes for radiators, including pricing and manufacturing methods.8th Aug 1921Box 38 \ 2  Scan155
Sourcing of standard hand-operated louvres for the 40/50 HP model.11th Aug 1921Box 38 \ 2  Scan156
On the testing, cost, and potential UK sourcing of extruded copper tubes for radiators.20th Aug 1921Box 38 \ 2  Scan157
Experimental radiator cowl to improve cooling on the 40/50 HP armoured car for sand tests.1st Aug 1921Box 38 \ 2  Scan158
Customer complaints about engine overheating and radiator water loss.25th Aug 1921Box 38 \ 2  Scan159
Leaking radiator tubes caused by the omission of a rubber washer at the rear end.2nd Sep 1921Box 38 \ 2  Scan160
Issue of water loss due to boiling during hill climbing and potential solutions.9th Sep 1921Box 38 \ 2  Scan161
Letter discussing the use of extruded copper tubes in radiators to address engine overheating issues.12th Sep 1921Box 38 \ 2  Scan162
Proposing the standardisation of a smaller pulley to resolve issues of radiator water boiling at high altitudes.19th Sep 1921Box 38 \ 2  Scan163
The testing of a radiator cowl designed to prevent water loss from boiling in experimental and armoured cars.24th Sep 1921Box 38 \ 2  Scan164
Telegram received by telephone regarding the results of cowlings over radiator fans on a 40/50 chassis.23th Aug 1918Box 38 \ 2  Scan165
Confirmation of a telegram regarding a meeting and suggestions for a USA winter programme.10th Oct 1921Box 38 \ 2  Scan166
Engine overheating issues in the Swiss Alps and proposed solutions.14th Oct 1921Box 38 \ 2  Scan167
Internal memorandum regarding comparative testing on the efficiency of extruded copper tubes versus brass tubes for radiators.12th Sep 1921Box 38 \ 2  Scan168
Test results comparing a standard radiator with a radiator fitted with copper tubes.13th Jan 1922Box 38 \ 2  Scan169
Radiator tests comparing a standard radiator to a 'Sofr' radiator, with temperature readings recorded at various intervals.7th Feb 1922Box 38 \ 2  Scan170
Comparative test measuring the velocity of air passing through the radiators of the 40/50 and Goshawk II engines.30th May 1922Box 38 \ 2  Scan171
Tests on a Goshawk engine to reduce water loss and comparing its performance to the 40/50 model.1st May 1922Box 38 \ 2  Scan172
Comparison of engine overheating characteristics between the 40/50 and Goshawk models, including thermometer reliability.30th May 1922Box 38 \ 2  Scan173
Dynamometer testing of a Goshawk radiator and a 40/50 car's cooling performance.9th Jun 1922Box 38 \ 2  Scan174
Inquiry into the effects of engine overheating due to water loss from a leak and the potential for an alarm signal.9th Jun 1922Box 38 \ 2  Scan175
Technical memorandum discussing experiments on the 40/50 engine's cooling system to prevent water loss.5th Jun 1922Box 38 \ 2  Scan176
Comparative tests of water loss from a car's radiator under boiling conditions.12th Aug 1922Box 38 \ 2  Scan177
Modifications to a chassis for Mr. Riedemann to prevent engine boiling, including fitting a larger radiator.12th Aug 1922Box 38 \ 2  Scan178
Short handwritten note asking for an opinion on a referenced item.9th Oct 1922Box 38 \ 2  Scan179
Directive to fit radiator louvres and thermometers to all 40/50s and Goshawk cars to maintain high engine temperatures.1st Sep 1922Box 38 \ 2  Scan180
Suitability of a deeper radiator and larger fan for cars intended for use in Switzerland and India.10th Sep 1922Box 38 \ 2  Scan181
Instruction sheet for Mr. Hives regarding an experimental radiator from The Excelsior Radiator Co.16th Jan 1923Box 38 \ 2  Scan182
Sample radiator tube made by Electro Deposition compared to existing manufacturing processes.26th Jan 1923Box 38 \ 2  Scan183
Sample radiators from Excelsior Radiator Company and a request to compare them with the existing supplier, Marstons.31th Jan 1923Box 38 \ 2  Scan184
Standardisation proposal to change radiator tank corners from a radius to sharp corners to improve appearance.21th Mar 1923Box 38 \ 2  Scan185
Review document for a proposed modification to a chassis brake corner part.25th Feb 1922Box 38 \ 2  Scan186
Containing an extract from a letter concerning sample radiator tubes, their quality, and strength.4th May 1923Box 38 \ 2  Scan187
Follow-up from The Excelsior Motor Radiator Co. of Leeds, regarding the final test status of two sample radiators.3rd May 1923Box 38 \ 2  Scan188
Tests to prevent water loss from a radiator due to boiling.21th Aug 1923Box 38 \ 2  Scan189
Tests conducted to prevent water loss from engine radiators due to boiling.1st Aug 1923Box 38 \ 2  Scan190
Modifications to the radiator and cooling system, including water pipes, steam separators, and filler caps.12th Jul 1923Box 38 \ 2  Scan191
Testing a pressurised cooling system to prevent water from boiling readily.9th Sep 1923Box 38 \ 2  Scan192
With a diagram suggesting a new method for applying a scheme to radiators.12th Jul 1923Box 38 \ 2  Scan193
Increasing the boiling point of water in a radiator by subjecting it to pressure.12th Jul 1923Box 38 \ 2  Scan194
Testing a pressurized radiator system to increase the boiling point of water.12th Jul 1923Box 38 \ 2  Scan195
Page showing boiling points and engine temperature data tables.18th Jul 1923Box 38 \ 2  Scan196
Road tests on engine cooling performance during a hill climb.12th Jul 1923Box 38 \ 2  Scan197
Technical data sheet comparing specifications for Goshawk-II and 40/50 HP radiators.14th Sep 1923Box 38 \ 2  Scan198
Specifications for the 40/50 model's radiator and fan, including water capacity and pulley diameters.29th Sep 1923Box 38 \ 2  Scan199
Modifying the chassis cooling system for better performance in cold weather.21th Nov 1923Box 38 \ 2  Scan200
Test data sheet recording the temperature of air at the rear of the fan in relation to water temperature at speeds of 25 and 45 mph.15th Oct 1923Box 38 \ 2  Scan201


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