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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Cover note for a fortnightly report on the progress of design work.4th Oct 1934Box 30 \ 4  Scan304
Design position report detailing the status of various items for the 20/25 HP and Bentley chassis.4th Oct 1934Box 30 \ 4  Scan305
List of design modifications and their status for Bentley and Phantom II chassis.4th Oct 1934Box 30 \ 4  Scan306
List of design modifications and their completion status for the Spectre chassis.4th Oct 1934Box 30 \ 4  Scan307
List of design modifications and their current status for the Spectre Chassis.4th Oct 1934Box 30 \ 4  Scan308
Design position report detailing the status of items for the Spectre and Wraith chassis.4th Oct 1934Box 30 \ 4  Scan309
Design position report detailing the status of components for the Wraith Chassis and Phantom II Tank Engines.4th Oct 1934Box 30 \ 4  Scan310
Design position report for the P.V.G.II and Griffon engines, listing the status of various components.4th Oct 1934Box 30 \ 4  Scan311
Design position status report for the P.V.XII engine and single cylinder research projects.4th Oct 1934Box 30 \ 4  Scan312
Design position report detailing the status of various single-cylinder and general research projects.4th Oct 1934Box 30 \ 4  Scan313
Design position report detailing the status of components for the Kestrel and Goshawk engines.18th Oct 1934Box 30 \ 4  Scan314
Cover note for a fortnightly report on the progress of design work.18th Oct 1934Box 30 \ 4  Scan315
Design position report listing the status of various chassis components.18th Oct 1934Box 30 \ 4  Scan316
Status report on the future development of the Merlin 'E' and Buzzard engines.20th Jun 1935Box 30 \ 4  Scan317
Cover memo for a fortnightly report on the progress of design work.20th Jun 1935Box 30 \ 4  Scan318
List of modifications and their status for Bentley, 20/25 HP, and Phantom II Tank Engine chassis.20th Jun 1935Box 30 \ 4  Scan319
List of design positions and their current status for the Spectre Chassis.20th Jun 1935Box 30 \ 4  Scan320
List of design modifications and their completion status.20th Jun 1935Box 30 \ 4  Scan321
Design position report for the Spectre model, listing the status of various components.20th Jun 1935Box 30 \ 4  Scan322
Design position report detailing the status of various components for the Spectre and Wraith chassis.20th Jun 1935Box 30 \ 4  Scan323
List of items and their design positions for the Wraith Chassis.20th Jun 1935Box 30 \ 4  Scan324
Design position report on single cylinder and general research items.20th Jun 1935Box 30 \ 4  Scan325
Status report on single cylinder and general research projects for Exe, Merlin, and Kestrel engines.20th Jun 1935Box 30 \ 4  Scan326
Design position report detailing modifications and their status for the Merlin 'C.1' and 'C.2' engines.20th Jun 1935Box 30 \ 4  Scan327
Design position report detailing the status of various components for the Merlin C.2, Goshawk B, and Liquid Cooled Exe engines.5th Jul 1935Box 30 \ 4  Scan328
Cover letter for a fortnightly report on the progress of design work.5th Jul 1935Box 30 \ 4  Scan329
Design position report detailing modifications and their status for various chassis and engines.5th Jul 1935Box 30 \ 4  Scan330
Design position report listing the status of various components for the Spectre Chassis.3rd Jul 1935Box 30 \ 4  Scan331
Design position report for the Spectre Chassis, detailing the status of various modifications and investigations.3rd Jul 1935Box 30 \ 4  Scan332
Design status report for the Spectre Chassis, listing various items and their completion status.4th Jul 1935Box 30 \ 4  Scan333
Design position status report listing various components, including those for the Wraith chassis.25th Jun 1935Box 30 \ 4  Scan334
Design position status report on single-cylinder and general engine research projects.25th Jun 1935Box 30 \ 4  Scan335
Progress report on single cylinder, general research, and Kestrel engine projects.28th Jun 1935Box 30 \ 4  Scan336
Design position report on components for Merlin C.I, Merlin C.II, and Goshawk 'B' engines.28th Jun 1935Box 30 \ 4  Scan337
Design position report detailing modifications and status for the Goshawk 'B' and Liquid Cooled Exe engines.24th Jun 1935Box 30 \ 4  Scan338
Progress report on design work for the period starting 5.7.35.8th Aug 1935Box 30 \ 4  Scan339
Design position report on chassis modifications for Bentley and 20/25 HP models.8th Aug 1935Box 30 \ 4  Scan340
Design status report for Phantom II Tank Engines and Spectre Chassis, listing various modifications and their completion status.8th Aug 1935Box 30 \ 4  Scan341
Progress report on modifications and investigations for the Goshawk 'C' and Vulture engines.10th Dec 1935Box 30 \ 4  Scan342
Status report on the future development of the Merlin 'E' and Buzzard engines.14th Dec 1935Box 30 \ 4  Scan343
Instruction for designers to mark temporary experimental modifications as 'Not suitable for production'.14th Dec 1935Box 30 \ 4  Scan344
Cover memo for a fortnightly report on the progress of design.2nd Jan 1935Box 30 \ 4  Scan345
Design position report detailing the status of various components for the Bentley Chassis.24th Dec 1935Box 30 \ 4  Scan346
Design position report for the 25-30 HP chassis, sheet 2.24th Dec 1935Box 30 \ 4  Scan347
Design position report for the Phantom III Chassis, detailing the status of various components and modifications.31th Dec 1935Box 30 \ 4  Scan348
List of design changes and their completion status for the Phantom III model (sheet 4).30th Dec 1935Box 30 \ 4  Scan349
Design position list outlining the status of various components for the Wraith II chassis.31th Dec 1935Box 30 \ 4  Scan350
Status report on single cylinder and general research projects, detailing the progress on various engine components.31th Dec 1935Box 30 \ 4  Scan351
Design position summary for Kestrel and Merlin 'E' engine modifications.30th Dec 1935Box 30 \ 4  Scan352
Design position report detailing the status of modifications and components for the Merlin, Goshawk, and Vulture engines.31th Dec 1935Box 30 \ 4  Scan353
Letter from British Petroleum Co. proposing a comparative test of their petrol against Shell.9th Nov 1920Box 30 \ 5  Scan001
Proposal to test petrol from the British Petroleum Company, requesting 50 gallons for the tests.16th Nov 1920Box 30 \ 5  Scan002
To the HCH Laboratory regarding a sample of No.1 Petrol from the British Petroleum Company for analysis.24th Nov 1920Box 30 \ 5  Scan003
Notification of the receipt of 50 gallons of petrol from The British Petroleum Co. for the Experimental Department.26th Nov 1920Box 30 \ 5  Scan004
Report comparing petrol from British Petroleum Co. with Shell No.1 spirit, noting lower power and increased engine 'pinking'.13th Dec 1920Box 30 \ 5  Scan005
Test report on a sample of petrol, detailing its distillation, specific gravity, and rectification test results.25th Nov 1920Box 30 \ 5  Scan006
Use of 'Mex' motor spirit over 'Shell' for testing engines, considering cost and alternative suppliers like British Petroleum.27th Jan 1921Box 30 \ 5  Scan007
Unsatisfactory petrol quality and its impact on vehicle testing and carburation.9th Feb 1921Box 30 \ 5  Scan008
Laboratory report comparing the distillation properties and specific gravity of two petrol samples, 'Mex' and 'BP1'.11th Feb 1921Box 30 \ 5  Scan009
Tests on an engine misfire, investigating the effects of different fuels and heat application to the induction pipe.13th May 1921Box 30 \ 5  Scan010
Trial of a National Benzole 50/50 mixture from the British Petroleum Company.21th Aug 1922Box 30 \ 5  Scan011
Request to arrange for the collection of 83 empty B.P. petrol tins.19th Mar 1923Box 30 \ 5  Scan012
Letter to the British Petroleum Co. requesting a meeting to discuss a higher H.U.C.R. value fuel for the 'Miss England 11' engines.8th Dec 1930Box 30 \ 5  Scan013
Letter from the British Petroleum Company Ltd. regarding an appointment with Mr. Royce.11th Dec 1930Box 30 \ 5  Scan014
Letter regarding a preliminary test of two tyres from The India Tyre & Rubber Co. Ltd.8th Jan 1935Box 30 \ 5  Scan015
Letter from the India Tyre & Rubber Company Ltd. to Mr. Robotham regarding previous correspondence and a personal enquiry.9th Jan 1935Box 30 \ 5  Scan016
Letter to the Earl of Rothes regarding tyres, a squash court manufacturer, and declining a dinner invitation.14th Jan 1935Box 30 \ 5  Scan017
Letter to the Earl of Rothes regarding a business trip, a dinner, and the progress of a chassis body.21th Jan 1935Box 30 \ 5  Scan018
Letter regarding a brake issue on a Bentley, potentially caused by a choked drain hole.27th Jan 1929Box 30 \ 5  Scan019
Letter from a customer requesting an inspection of their car, speculating about issues caused by the chauffeur's use of the 'one shot' pedal.29th Jan 1935Box 30 \ 5  Scan020
Letter to The Earl of Rothes regarding the inspection of Capt. Dugdale's car and another chassis, B-10-DG.29th Jan 1935Box 30 \ 5  Scan021
Letter from India Tyre & Rubber Company Ltd. regarding the progress of bodywork on a car at Park Ward's.30th Jan 1935Box 30 \ 5  Scan022
Letter from India Tyre & Rubber Company regarding the seating trial for Mr. Thompson's chassis B.10.DG.2nd Feb 1935Box 30 \ 5  Scan023
Letter to the Earl of Rothes arranging potential meeting dates with Mr. Thompson.4th Feb 1935Box 30 \ 5  Scan024
Letter to the Earl of Rothes about scheduling a car seat trial at the Langham Hotel.8th Feb 1935Box 30 \ 5  Scan025
Letter to the Earl of Rothes regarding Captain Dugdale's car being in the Experimental Dept for a brake complaint.11th Feb 1935Box 30 \ 5  Scan026
Letter to The Earl of Rothes regarding the order of a 3½ litre Bentley Saloon and a modification for his father-in-law.18th Feb 1935Box 30 \ 5  Scan027
Letter from the India Tyre & Rubber Company Ltd. acknowledging correspondence.19th Feb 1935Box 30 \ 5  Scan028
Letter to a customer clarifying a part-exchange deal for a new Bentley or Rolls-Royce.19th Feb 1935Box 30 \ 5  Scan029
Letter to the Earl of Rothes regarding experimental water excluders and ordering new India tread tyres for a Bentley.4th Mar 1935Box 30 \ 5  Scan030
Order for tyres for Lord Rothes.4th Mar 1935Box 30 \ 5  Scan031
Letter from India Tyre & Rubber Company regarding Bentley water excluders and tyres.5th Mar 1935Box 30 \ 5  Scan032
Letter from India Tyre & Rubber Company Ltd. proposing a new chromium-plated Schrader 'Ezemount' valve fitting for Bentley cars.6th Mar 1935Box 30 \ 5  Scan033
Letter to The Earl of Rothes confirming a meeting and discussing work on noise insulation for Park Ward Bentley bodies.8th Mar 1935Box 30 \ 5  Scan034
Letter from India Tyre & Rubber Co. regarding the fitment and testing of new tyre types on a Bentley.14th Mar 1935Box 30 \ 5  Scan035
Letter concerning a Bentley chassis B-131-CW brake issue after washing and arranging a service visit.14th Mar 1935Box 30 \ 5  Scan036
Agreeing to supply the new type Schrader 'Ezemount' Valve Fitting with India tyres for Bentley vehicles.14th Mar 1935Box 30 \ 5  Scan037
Letter to The India Tyre & Rubber Co. Ltd. discussing a new valve assembly for Bentley tyres and requesting weights for extra low pressure tyres.14th Mar 1935Box 30 \ 5  Scan038
Letter from India Tyre & Rubber Company about the new Ezemount valve fitting for Bentley tyres and the specifications of tyres sent for testing.15th Mar 1935Box 30 \ 5  Scan039
Achieving car weight savings by utilising smaller wheels and tyres, referencing American practices.19th Mar 1935Box 30 \ 5  Scan040
Comparative table of wheel and tyre weights, and ground clearances for various car models.14th Mar 1935Box 30 \ 5  Scan041
Comparison of wheel and tyre weights in pounds for various models and sizes.19th Mar 1935Box 30 \ 5  Scan042
Letter from a tyre manufacturer discussing suitable tyre options and specifications for a Colonial Bentley.19th Mar 1935Box 30 \ 5  Scan043
Page 2 of a letter from India Tyre & Rubber Company Limited to W. A. Robotham.19th Mar 1935Box 30 \ 5  Scan044
Specification table detailing the dimensions and properties of various tyres.19th Mar 1935Box 30 \ 5  Scan045
Letter to a tyre manufacturer discussing the weights of various tyres for weight-saving purposes.20th Mar 1935Box 30 \ 5  Scan046
Letter from the India Tyre & Rubber Company discussing the weight difference between Bentley and Terraplane wheels and tyres.21th Mar 1935Box 30 \ 5  Scan047
Page 2 of a letter to W.A. Robotham discussing weight differences between types of tyres, wheels and hubs.21th Mar 1935Box 30 \ 5  Scan048
Letter from a tyre manufacturer discussing the suitability of 4-ply versus 6-ply low-pressure tyres for export vehicles.22th Mar 1935Box 30 \ 5  Scan049
Comparison of weights and dimensions for low-pressure tyres from manufacturers India, Goodyear, and Dunlop.22th Mar 1935Box 30 \ 5  Scan050


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