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).
Rolls-Royce Experimental Archives                
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DescriptionDateIdentifier
Request for information on the 'SS' Chassis regarding ignition timing and combustion chamber capacity.12th Jul 1929Box 65a \ 3  scan0075
Recommended ignition timing settings based on tests to reduce engine detonation.15th Jul 1929Box 65a \ 3  scan0076
Graph showing power variation with ignition timing for S.S. Engines.15th Jul 1929Box 65a \ 3  scan0077
Measuring the clearance volume of the combustion space and calculating the compression ratio.15th Jul 1929Box 65a \ 3  scan0078
Recommending the use of a lower engine compression ratio for S.S. Cars to improve smoothness at the cost of performance.17th Jul 1929Box 65a \ 3  scan0079
Blueprint detailing a modification to a cylinder head for S.S. Engines to achieve a 4.25 compression ratio.16th Jul 1925Box 65a \ 3  scan0080
'Sg' to 'Hs' requesting two more side-view photographs of the 18-EX.17th Jul 1929Box 65a \ 3  scan0081
Cover note regarding a list of details delayed by the Drawing Office for the J.2 Series, and the release of Axle Forgings.19th Jul 1929Box 65a \ 3  scan0082
List of parts held up by the Drawing Office for the 40/50 HP J2 Series chassis.4th Jul 1929Box 65a \ 3  scan0083
Secret memo discussing a car with defective pistons sent to Derby for repair and positive feedback on the 20 HP model's performance.16th Jul 1929Box 65a \ 3  scan0084
From Hs. to Sg. regarding photographs of the 18-EX car.19th Jul 1929Box 65a \ 3  scan0085
Issues with the 'SS' chassis concerning steering, spring gaiters, and the exhaust system.23th Jul 1929Box 65a \ 3  scan0086
Trade-off between engine performance versus smoothness and silence by lowering compression on S.S. cars.23th Jul 1929Box 65a \ 3  scan0087
Discrepancies on the S.S. Chassis compared to its standardisation specification.25th Jul 1929Box 65a \ 3  scan0088
Responding to feedback on the coachwork, speedometer, and steering for car 18-EX.26th Jul 1929Box 65a \ 3  scan0089
Replying to an earlier memo, detailing expected differences in production S.S. Cars concerning spring oiling, servo lining, and exhaust fittings.26th Jul 1929Box 65a \ 3  scan0090
Modifications for S.S. cars to prevent clicking and improve lubrication in steering and damper components.30th Jul 1929Box 65a \ 3  scan0091
Secret memo from 'Sg' to 'Hs' discussing the performance effects of lower compression on 'SS' cars.30th Jul 1929Box 65a \ 3  scan0092
Production test issues with the S.S. Chassis, covering the clutch brake, exhaust joint, and propeller shaft.8th Aug 1929Box 65a \ 3  scan0093
Issues concerning the vacuum pump, slipper flywheel clearance, and tappets.12th Aug 1929Box 65a \ 3  scan0094
Brake groaning and exhaust spitting issues on an SS chassis.12th Aug 1929Box 65a \ 3  scan0095
Recommended loads for 'S.S' hydraulic dampers without dynamic restrictions.10th Aug 1929Box 65a \ 3  scan0096
Alteration to the setting of the S.S. Side Steering Tube.12th Aug 1929Box 65a \ 3  scan0097
Blueprint showing a modified S.S. tube setting with dimensional annotations.12th Aug 1929Box 65a \ 3  scan0098
Graph plotting load in pounds against the relative movement of two ball ends for different component tests and settings.13th Aug 1929Box 65a \ 3  scan0099
Comparative testing of different sized radiator tubes for the F.2.B series.13th Aug 1929Box 65a \ 3  scan0100
Drilling a breather hole in the Change Gear Bracket G.77500 to prevent oil leaks.14th Aug 1929Box 65a \ 3  scan0101
Test comments and required improvements for the S.S. Production Chassis.19th Aug 1929Box 65a \ 3  scan0102
Report page detailing a list of vehicle faults and performance observations.19th Aug 1929Box 65a \ 3  scan0103
Continued list of technical points and suggested improvements for a vehicle, numbered 12 through 20.19th Aug 1929Box 65a \ 3  scan0104
Issues with throttle governor sensitivity, engine tray drainage, and chassis weight.19th Aug 1929Box 65a \ 3  scan0105
Visit by Sir Henry Seagrave with a Hispano Suiza car, detailing its specifications and a performance comparison.20th Mar 1929Box 65a \ 3  scan0106
Performance test report covering a car's acceleration, maximum speed, steering, and brakes.20th Mar 1929Box 65a \ 3  scan0107
Performance comparison report between a Hispano sports car and the Continental Phantom, focusing on braking, steering, and suspension.21th Aug 1929Box 65a \ 3  scan0108
The over-stressing of driving springs in a lower inertia spring drive design.21th Aug 1929Box 65a \ 3  scan0109
The potentially illegal positioning of the front numberplate on the 'S.S.' model and the design of modified brackets.23th Aug 1929Box 65a \ 3  scan0110
Requesting an update on the design for thermostat operated shutters for S.S. cars.30th Aug 1929Box 65a \ 3  scan0111
Proposing to send Experimental car No. 21-EX to London for S.S. Trials.13th Sep 1929Box 65a \ 3  scan0112
Secret memorandum outlining the design objectives for improving SS cars, focusing on riding quality, performance, and weight distribution.16th Sep 1929Box 65a \ 3  scan0113
Improvements in chassis design, engine performance, and a new central oiling system.16th Sep 1929Box 65a \ 3  scan0114
Technical specification detailing the transmission, clutch, gearbox, propeller shaft, and rear axle.16th Sep 1929Box 65a \ 3  scan0115
Description of the vehicle's suspension system, including dampers, springs, and axles.16th Sep 1929Box 65a \ 3  scan0116
Description of the lubrication system, frame, and steering gear.16th Sep 1929Box 65a \ 3  scan0117
Design improvements to the front axle, road wheels, braking system, radiator, battery, and body mounting.16th Sep 1929Box 65a \ 3  scan0118
Improvements to the instruments and engine of a chassis.16th Sep 1929Box 65a \ 3  scan0119
Listing ten key improvements to a car model, including details on the vacuum pump and electric starter system.17th Sep 1929Box 65a \ 3  scan0120
Requesting the instruction of three complete low inertia type slipper wheels with a modified spring retaining device for S.S. cars.17th Sep 1929Box 65a \ 3  scan0121
Requesting confirmation on the correct type, quantity and price of special grease for the Phantom II chassis back axle.18th Sep 1929Box 65a \ 3  scan0122
Alternative positions for the 'S.S.' front numberplate.20th Sep 1929Box 65a \ 3  scan0123
Listing outstanding issues and required improvements for the S.S. Production Chassis.21th Sep 1929Box 65a \ 3  scan0124
List of technical issues and points for attention regarding various car components.21th Sep 1929Box 65a \ 3  scan0125
Issues with instrument colours, wiring, and cylinder lubrication.21th Sep 1929Box 65a \ 3  scan0126
Development of sports cars for the Phantom II & 20 HP models, covering body types and engine power enhancements.24th Sep 1929Box 65a \ 3  scan0127
Requesting the overnight removal of a flywheel from the 'BUMP CAR' 23-EX.25th Sep 1929Box 65a \ 3  scan0128
Sports car development, focusing on the Phantom II and discontinuing the 20 HP model.9th Sep 1929Box 65a \ 3  scan0129
Urgent query regarding a discrepancy in the Phantom II's engine power specifications between the English and French catalogues.27th Sep 1929Box 65a \ 3  scan0130
On testing and suggesting modifications for the Phantom II valve spring removing tackle.28th Sep 1929Box 65a \ 3  scan0131
Progress report on car development, detailing tests on a Phantom II and other components like crankshafts, pistons, and carburetors.28th Sep 1929Box 65a \ 3  scan0132
Complaints and potential modifications for the high-speed steering on the Phantom II model.30th Sep 1929Box 65a \ 3  scan0133
The 20 HP chassis for Japan, detailing engine modifications and the status of experimental cars.1st Oct 1929Box 65a \ 3  scan0134
Availability of parts for the Phantom II High Speed Steering.1st Oct 1929Box 65a \ 3  scan0135
Visit to discuss production difficulties and performance of the S.S. and 20 HP cars.4th Oct 1929Box 65a \ 3  scan0136
List of reported issues and features requiring attention on the Phantom II chassis.9th Oct 1929Box 65a \ 3  scan0137
Complaint about front step brackets on an Open Trials Car and proposing a solution for splayed wings.9th Oct 1929Box 65a \ 3  scan0138
Clarifying that curved front step brackets are only for Phantom IIs with side wheel carriers.11th Oct 1929Box 65a \ 3  scan0139
Potential modifications to the Phantom II's axle ratio and suspension following a Brooklands record attempt.11th Oct 1929Box 65a \ 3  scan0140
Choice between Staybrite and chromium finishes for various car components.14th Oct 1929Box 65a \ 3  scan0141
Proposed improvements for the Phantom II vehicle, listing nine new parts for a 10,000-mile test.5th Oct 1929Box 65a \ 3  scan0142
Modifications to car components like spare wheels, radiators, and lubrication systems.5th Oct 1929Box 65a \ 3  scan0143
Customer complaints regarding noisy shock absorbers and potential solutions.15th Oct 1929Box 65a \ 3  scan0144
Update on the status and agreed position of the front numberplate.15th Oct 1929Box 65a \ 3  scan0145
Design and supply of front step brackets for the Phantom II chassis.16th Oct 1929Box 65a \ 3  scan0146
Instructions to order 3 sets of chromium-plated parts for the Phantom II Chassis J2 series test car.16th Oct 1929Box 65a \ 3  scan0147
Short typed memo regarding the future of experimental cars 22-EX and 18-EX.18th Oct 1929Box 65a \ 3  scan0148
From 'Sg' to 'Hs' regarding a 10,000 miles test on a Phantom II.16th Oct 1929Box 65a \ 3  scan0149
Questioning the necessity of a car in the Experimental Department due to cost considerations.16th Oct 1929Box 65a \ 3  scan0150
Status and plans for experimental cars 18-EX and 21-EX.21th Oct 1929Box 65a \ 3  scan0151
Confirming details about experimental cars 21-EX and 18-EX, including a repaint and delivery schedule.21th Oct 1929Box 65a \ 3  scan0152
Post-show logistics for the 18-EX car to generate orders.26th Oct 1929Box 65a \ 3  scan0153
Requirement for a hypoid gear on the Phantom II Sports Car, including specifications and design considerations.26th Oct 1929Box 65a \ 3  scan0154
The return date for the 18-EX car.28th Oct 1929Box 65a \ 3  scan0155
Parts for a 10,000-mile test of a Phantom II and the test's start date.29th Oct 1929Box 65a \ 3  scan0156
Urgent memo regarding the collection of chassis 21.EX for customer demonstrations in Liverpool.1st Nov 1929Box 65a \ 3  scan0157
Confirmation and a copy of a speed certificate for the Phantom II.4th Nov 1929Box 65a \ 3  scan0158
The unofficial lap speeds of Phantom cars at Brooklands track.5th Nov 1929Box 65a \ 3  scan0159
Request for a photograph or chassis number of a Closed Limousine that lapped Brooklands at 80 mph for distribution to overseas representatives.7th Nov 1929Box 65a \ 3  scan0160
Effects of increased tyre diameter on the Phantom chassis, specifically regarding the turning circle.7th Nov 1929Box 65a \ 3  scan0161
Analysis of petrol supply issues to the carburettor, detailing flow rate reductions caused by various obstructions.7th Nov 1923Box 65a \ 3  scan0162
Fluid delivery rates under different supply conditions and identifying flow obstructions.7th Nov 1929Box 65a \ 3  scan0163
Data table comparing delivery results through a needle valve under various conditions.7th Nov 1929Box 65a \ 3  scan0164
Needle valve and carburetter tests with recommendations for improving fuel flow.7th Nov 1929Box 65a \ 3  scan0165
Table comparing flow rates between a standard filter and a modified filter under two different conditions.1st Nov 1929Box 65a \ 3  scan0166
Drawings for a European Propaganda Car, Phantom II.11th Nov 1929Box 65a \ 3  scan0167
List of parts and alterations for the next 10,000 miles test car.12th Nov 1929Box 65a \ 3  scan0168
Outlining problems and proposed improvements for the Phantom II model.14th Nov 1929Box 65a \ 3  scan0169
List of proposed modifications and improvements for vehicle components and specific models like the 20 HP and 'F' Engine.4th Nov 1929Box 65a \ 3  scan0170
Engine improvements, including carburetters, superchargers, reduction gears, and the 'H' engine.14th Nov 1929Box 65a \ 3  scan0171
Standardisation of an 'SS' Chassis to replace the Phantom.13th Jul 1929Box 65a \ 3  scan0172
List of reported defects requiring improvement, with handwritten notes and approvals.29th Feb 1932Box 65a \ 3  scan0173
Lost key and an incorrect replacement key for car 18-EX.27th Nov 1929Box 65a \ 3  scan0174


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