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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Letter from the Brooklands Automobile Racing Club concerning the progress of track repairs and circuit availability.10th Dec 1932Box 155 \ 1  scan0053
Letter to the Clerk of the Course at Brooklands Motor Course regarding arranging a clear passage around the track.12th Dec 1932Box 155 \ 1  scan0054
Request from the Sales Department for acceleration tests to be performed on the Phantom II Continental chassis.26th Jan 1933Box 155 \ 1  scan0055
Letter to Mr. Percy Bradley at Brooklands Motor Track regarding track availability for car testing.30th Jan 1933Box 155 \ 1  scan0056
Letter from Brooklands Automobile Racing Club confirming the outside circuit is clear for use.31th Jan 1933Box 155 \ 1  scan0057
Performance test data from Brooklands Track for a Bensport Chassis F.B III, showing acceleration and speed tests.2nd Feb 1933Box 155 \ 1  scan0058
Results of a vehicle test on the Brooklands track.5th Feb 1933Box 155 \ 1  scan0059
Oil leaks from the clutch pit and a comparison of exhaust system losses with earlier tuning.6th Feb 1933Box 155 \ 1  scan0060
Steering characteristics and pivot inclination tests for a new axle.22th Sep 1926Box 155 \ 1  scan0061
Report page discussing steering tests on an altered standard axle, with an attached blueprint sketch of transversally raked pivots.22th Sep 1926Box 155 \ 1  scan0062
Tests on the effect of transverse rake and pivot inclination on steering effort for a 20 HP axle.22th Sep 1926Box 155 \ 1  scan0063
Comparing the effect of transverse pivot inclination on steering effort for different axle types.22th Sep 1926Box 155 \ 1  scan0064
Comparison of five different axle and pivot configurations, ordered by steering heaviness.28th Jan 1933Box 155 \ 1  scan0065
Performance curves for a Bensport J.I. Unit C.9 engine, testing various exhaust system modifications.28th Jan 1933Box 155 \ 1  scan0066
Performance graph showing BHP and BMEP against RPM for a specific engine configuration with two different timing settings.28th Jan 1933Box 155 \ 1  scan0067
High-speed performance testing of two Continental Phantom II cars at Brooklands track.3rd Mar 1933Box 155 \ 1  scan0068
The speed and acceleration trials for Chassis No. 20 MY at Brooklands.3rd Mar 1933Box 155 \ 1  scan0069
Arranging a car test at Brooklands to compare a 4-litre Delage or an Essex Terraplane with a Bentley.17th Mar 1933Box 155 \ 1  scan0070
Meeting at Brooklands to test competitor cars including Talbot, Bugatti, and Alfa Romeo.5th Apr 1933Box 155 \ 1  scan0071
Meeting at Brooklands to test cars, mentioning an Alfa Romeo and whether to show a Bentley to Mr. Lionel Martin.12th Apr 1933Box 155 \ 1  scan0072
Letter to Brooklands Track regarding two track tickets.12th Apr 1933Box 155 \ 1  scan0073
Meeting at Brooklands, the Monte Carlo Races, and the potential production of a 2.3 litre sports car similar to an Alfa Romeo.20th Apr 1933Box 155 \ 1  scan0074
Arranging a car meeting at Brooklands and expressing interest in a Speed 20 Alvis.21th Apr 1933Box 155 \ 1  scan0075
Car testing at Brooklands, detailing performance times and engine component failures due to oil shortage.27th Apr 1933Box 155 \ 1  scan0076
Required modifications to the oil feed system for rocker shafts and an issue with a water drain tap.27th Apr 1933Box 155 \ 1  scan0077
Correspondence regarding the postponement of a trial at Brooklands due to practice for the International Trophy Race.1st May 1933Box 155 \ 1  scan0078
Confirming a meeting for Friday the 12th at 11 a.m. on the track and returning an attached letter.2nd May 1933Box 155 \ 1  scan0079
Arranging a meeting to inspect various competitor cars including Alfa, Bugatti, Talbot, and Alvis.4th May 1933Box 155 \ 1  scan0080
Short typed memo confirming a rendezvous time and date.5th May 1933Box 155 \ 1  scan0081
Brooklands test results comparing two Bentley cars against a Talbot and an Alvis for speed and acceleration.16th May 1933Box 155 \ 1  scan0082
Speed tests for Chassis 2.B.IV on the Brooklands track with various engine and body configurations.17th May 1933Box 155 \ 1  scan0083
Acceleration tests comparing single and double hot spot feeds to address 'flat spot' issues, with notes on air silencer and wing design.17th May 1933Box 155 \ 1  scan0084
Test report detailing engine oil loss, cooling, steering performance, and petrol consumption tests.17th May 1933Box 155 \ 1  scan0085
Performance test results for Bentley Chassis 2.B.IV at Brooklands track, including speed, acceleration, and notes on wing design and an oil leak.18th May 1933Box 155 \ 1  scan0086
Test report on clutch ventilation, cooling, steering, engine performance, and fuel consumption.18th May 1933Box 155 \ 1  scan0087
Brooklands test results comparing J.3. and S.U. carburettors, and water versus air oil coolers.23th May 1933Box 155 \ 1  scan0088
Performance comparison notes from two acceleration tests between cars.1st Jun 1933Box 155 \ 1  scan0089
Lap speed and time test results from Brooklands with different equipment setups.1st Jun 1933Box 155 \ 1  scan0090
Performance test results for three Bentley cars at Brooklands track.3rd Jun 1933Box 155 \ 1  scan0091
Testing of a new cut-out and petrol pump performance.5th Jun 1935Box 155 \ 1  scan0092
To the Accounts Department regarding unpaid petrol bills for work done at Brooklands track.13th Jun 1933Box 155 \ 1  scan0093
Arranging for axle ratio testing of two Bentley cars at the Brooklands track.19th Jun 1933Box 155 \ 1  scan0094
Letter to the Clerk of the Course at Brooklands Track regarding a track ticket.21th Jun 1933Box 155 \ 1  scan0095
Test report on Bentley cars at Brooklands track, investigating the effects of axle ratios, wings, and exhaust systems on performance.23th Jun 1933Box 155 \ 1  scan0096
Summary of comparative tests on car components and their effect on performance, with no mechanical troubles experienced.23th Jun 1933Box 155 \ 1  scan0097
Performance graph plotting BHP at the road wheels against engine RPM for a Bentley chassis, including component and timing specifications.23th Jun 1933Box 155 \ 1  scan0098
Blueprint detailing an engine performance graph and specifications for a Bentley 4-B IV chassis.24th Jun 1933Box 155 \ 1  scan0099
Performance graph and specification sheet for Bentley Chassis 2-B.N.26th Jun 1933Box 155 \ 1  scan0100
Arranging a meeting and bypass road tests for a Bentley at Brooklands.28th Jun 1933Box 155 \ 1  scan0101
Short typed memo arranging a meeting at Brooklands with Bentley cars.29th Jun 1933Box 155 \ 1  scan0102
Maximum speed tests of 3.5 Litre Bentley cars at Brooklands Track.4th Jul 1933Box 155 \ 1  scan0103
Maximum speed tests and speedometer accuracy checks for several cars.4th Jul 1933Box 155 \ 1  scan0104
Test report on a Bentley petrol feed system conducted at Brooklands.16th Sep 1933Box 155 \ 1  scan0105
The Brooklands track test of a 3½ Litre Bentley, chassis B-15-AE.29th Sep 1933Box 155 \ 1  scan0106
Letter from the Experimental Department to the Clerk of the Course at Brooklands Track regarding testing availability.20th Oct 1933Box 155 \ 1  scan0107
Confirming the specification of a B.6 unit for a Brooklands test car, 1.B.IV.21th Oct 1933Box 155 \ 1  scan0108
Letter from Brooklands Automobile Racing Club confirming the track will remain open until November 4th.21th Oct 1933Box 155 \ 1  scan0109
Car's performance test, including mileage, consumption, and lap speeds.24th Oct 1933Box 155 \ 1  scan0110
Vehicle road test, detailing issues with valve clearance, engine performance data, oil temperatures and a leak from the rocker cover joint.25th Oct 1933Box 155 \ 1  scan0111
Dispatch of short and long reach spark plugs for testing and enclosing track tickets.25th Oct 1933Box 155 \ 1  scan0112
Despatch of sparking plugs and carburetter needles for testing at Brooklands Track.25th Oct 1933Box 155 \ 1  scan0113
Letter to Brooklands Motor Course requesting to run endurance tests on the track.26th Oct 1933Box 155 \ 1  scan0114
Reproduced piston failure on a 3 1/2 Litre Bentley during testing at Brooklands.26th Oct 1933Box 155 \ 1  scan0115
Letter from Brooklands Automobile Racing Club regarding track availability for testing.27th Oct 1933Box 155 \ 1  scan0116
Cause of piston failures in a 3 1/2 Litre Bentley engine, attributing it to an exhaust valve.28th Oct 1933Box 155 \ 1  scan0117
Car's performance test, detailing consumption figures, engine smoothness and future test plans.30th Oct 1933Box 155 \ 1  scan0118
Letter from Brooklands Automobile Racing Club regarding an employee's membership application.31th Oct 1933Box 155 \ 1  scan0119
The particulars of membership for the Brooklands Automobile Racing Club.1st Mar 1933Box 155 \ 1  scan0120
Typed report on vehicle mileage and performance testing on both road and track.31th Oct 1933Box 155 \ 1  scan0121
Vehicle's road and track test, detailing performance, mechanical failures, and observations.1st Nov 1933Box 155 \ 1  scan0122
Speed test results for a streamlined car at Brooklands and on the Towcester Road.4th Nov 1933Box 155 \ 1  scan0123
Performance review of a 100 M.P.H. streamlined Bentley car after road and track testing.6th Nov 1933Box 155 \ 1  scan0124
Positive results from wind tunnel tests on a streamlined Bentley car.7th Nov 1933Box 155 \ 1  scan0125
Performance results of the 100 m.p.h. Bentley Streamline Car and potential body improvements.7th Nov 1933Box 155 \ 1  scan0126
Letter to the Clerk of the Course at Brooklands Track inquiring about the availability of the outside circuit for tests.9th Mar 1934Box 155 \ 1  scan0127
Letter from Brooklands Automobile Racing Club confirming the availability of the outside circuit for testing.10th Mar 1934Box 155 \ 1  scan0128
Carburetter performance tests comparing speed, acceleration, and consumption at Brooklands.13th Mar 1934Box 155 \ 1  scan0129
Request to borrow lantern slides or photographs of the 'R' type engine for a presentation on the 'Blue-Bird'.20th Mar 1934Box 155 \ 1  scan0130
Letter to Reid Railton regarding twelve lantern slides of the 'R' engine used in the 'Bluebird'.21th Mar 1934Box 155 \ 1  scan0131
Index sheet providing descriptions for a series of slides related to engine testing rigs and development.18th May 1934Box 155 \ 1  scan0132
Radiator test results for a streamlined Bentley car B23AE at Brooklands.18th May 1934Box 155 \ 1  scan0133
Modifications and preparations for radiator tests on the Vulture car at Brooklands.4th Jun 1934Box 155 \ 1  scan0134
Requesting a radiator grille be made interchangeable with standard shutters for testing at Brooklands.13th Jun 1934Box 155 \ 1  scan0135
Short memo confirming the assumed availability of the Weybridge track for tests.25th Jun 1934Box 155 \ 1  scan0136
Telegram received by telephone regarding Whitney Straight's potential kilometre record attempt.25th Jun 1932Box 155 \ 1  scan0137
Tests carried out on fans and a Vulture radiator at Brooklands.3rd Jul 1934Box 155 \ 1  scan0138
Radiator performance test results at various speeds and throttle settings with louvres open and closed.3rd Jul 1934Box 155 \ 1  scan0139
Test results comparing different cooling fans based on maintained water and bonnet air temperatures.3rd Jul 1934Box 155 \ 1  scan0140
Conclusions from radiator tests comparing the performance of radiators for the Vulture and Spectre cars.3rd Jul 1934Box 155 \ 1  scan0141
Comparison of cooling efficiency and noise levels between different fan designs.3rd Jul 1934Box 155 \ 1  scan0142
Graph showing the results of Vulture radiator tests at Brooklands Track.26th Jun 1934Box 155 \ 1  scan0143
Graph comparing the performance of different Phantom engine cooling fans at Brooklands track.28th Jun 1934Box 155 \ 1  scan0144
Performance test results for vehicle B-35-AE at Brooklands, detailing lap speeds and acceleration times.6th Jul 1934Box 155 \ 1  scan0145
Press clipping featuring articles on a streamlined Bentley and a Lagonda drop-head coupe.11th Jul 1934Box 155 \ 1  scan0146
The track performance testing of E.R. Hall's car, model B-35-AE, comparing it to a streamlined saloon.11th Jul 1934Box 155 \ 1  scan0147
Aerodynamics, acceleration, and wind tunnel tests for improving Bentley competition cars.11th Jul 1934Box 155 \ 1  scan0148
Photographic comparison of lap speeds between a Standard Saloon and a streamlined B.23.AE model.11th Jul 1934Box 155 \ 1  scan0149
Photograph of E.R. Hall's car with a handwritten note about its lap speed.11th Jul 1934Box 155 \ 1  scan0150
Photograph of E.R. Hall's racing car with a handwritten caption.28th Jul 1934Box 155 \ 1  scan0151
Letter detailing the results and calculations from wind tunnel tests on a car body.28th Jul 1934Box 155 \ 1  scan0152


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