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
Continued use of subframes and the production plan for car bodies 18-EX and 19-EX.14th Sep 1928Box 65a \ 2  scan0053
Cover note forwarding a copy of a memo received from 'CWB'.15th Sep 1928Box 65a \ 2  scan0054
From CWB detailing a car's performance, particularly its cooling system, during a trip to Budapest.10th Sep 1928Box 65a \ 2  scan0055
Tyre performance, suspension, and steering issues during vehicle testing.18th Sep 1928Box 65a \ 2  scan0056
Confidential memo expressing concern about secrecy for 'SS' parts and the risk of knowledgeable visitors.18th Sep 1928Box 65a \ 2  scan0057
Confidential memo about the extreme secrecy concerning parts referred to as 'SS' and their secure storage.19th Sep 1928Box 65a \ 2  scan0058
Engine unit being ready for chassis installation, with further improvements planned for subsequent units.19th Sep 1928Box 65a \ 2  scan0059
Confidential memo discussing the production strategy for a left-hand drive 'SS' chassis for the American market.25th Sep 1928Box 65a \ 2  scan0060
State of design work report on the 'Canacha' chassis, detailing exceptions required for road testing and a list of further improvements.28th Sep 1928Box 65a \ 2  scan0061
Test report on Engine No. SS-3 detailing running conditions and tabulated compression pressures.28th Sep 1928Box 65a \ 2  scan0062
Various engine noise issues and planned investigations.25th Sep 1928Box 65a \ 2  scan0063
Graph of compression pressures against engine RPM for a Super Sports Engine.25th Sep 1928Box 65a \ 2  scan0064
Graph of Mechanical Efficiency and Friction Horsepower versus RPM for Engine No SS-3.25th Sep 1928Box 65a \ 2  scan0065
Query about returning a dummy chassis sent to coachbuilder Barkers, which was used for a Sports body on chassis 16-EX.2nd Oct 1928Box 65a \ 2  scan0066
Request to arrange for a dummy chassis at Barkers to be returned to Derby.3rd Oct 1928Box 65a \ 2  scan0067
Car work progress being temporarily overshadowed by aero work, with an update on a forthcoming S.S. chassis.18th Oct 1928Box 65a \ 2  scan0068
From 'R' expressing frustration at the slow progress of car improvements and outlining a new programme.20th Oct 1928Box 65a \ 2  scan0069
Inquiring about the availability of Experimental Car No. 17-EX for sale and shipment to India.24th Oct 1928Box 65a \ 2  scan0070
Declining to supply prints of WW designs for the SS chassis to America, based on instructions received.24th Oct 1928Box 65a \ 2  scan0071
Defending the pace of car development by listing numerous ongoing experimental projects.24th Oct 1928Box 65a \ 2  scan0072
Confirming the handover of car 17-EX to the Test Department for routine tests and inspection.25th Oct 1928Box 65a \ 2  scan0073
Listing outstanding designs required for the S.S. Chassis.25th Oct 1928Box 65a \ 2  scan0074
List of required designs to complete the S.S. chassis.25th Oct 1928Box 65a \ 2  scan0075
Confirming arrangements for car 14-EX to be brought to WW.10th Nov 1928Box 65a \ 2  scan0076
The sale and status of the Phantom Sports Car models.25th Oct 1928Box 65a \ 2  scan0077
The 'SS' engine development, comparing its performance against the standard F.2.B series engine.26th Oct 1928Box 65a \ 2  scan0078
Technical report discussing engine performance improvements related to carburetters and compression ratios.26th Oct 1928Box 65a \ 2  scan0079
Analysis of engine performance tests, detailing power gain distribution and airflow measurements through valves.26th Oct 1928Box 65a \ 2  scan0080
Analysis of increasing valve lift to improve air flow and volumetric efficiency in the SS engine, with plans for further testing.26th Oct 1928Box 65a \ 2  scan0081
Engine testing and development, focusing on induction systems, carburettors, manifolds, and pistons.26th Oct 1928Box 65a \ 2  scan0082
Engine spring and valve noise, with recommended solutions involving felt strips and spring washers.25th Sep 1928Box 65a \ 2  scan0083
Graph of Mechanical Efficiency and Friction Horse Power against R.P.M. for a Super Sports Engine.25th Sep 1928Box 65a \ 2  scan0084
Graph comparing air flow through Super Sports and F-2-B Series inlet valves against valve lift.26th Oct 1928Box 65a \ 2  scan0085
Graph comparing the power output of Super Sports engines against standard F-2-B series engines.26th Oct 1928Box 65a \ 2  scan0086
Blueprint of a rig for measuring air flow past valves on an S.S. cylinder head.27th Oct 1928Box 65a \ 2  scan0087
Complaint about a delay and providing an update on the progress of an SS. Chassis.27th Oct 1928Box 65a \ 2  scan0088
Status of various components for the 'SS' Chassis.27th Oct 1928Box 65a \ 2  scan0089
Letter from coachbuilders Thrupp & Maberly Ltd. arranging a demonstration car viewing.29th Oct 1928Box 65a \ 2  scan0090
Letter to Messrs. Thrupp & Maberly Ltd. arranging for a car to be seen at the Works rather than at a home address.30th Oct 1928Box 65a \ 2  scan0091
Road test report on a returned car, listing issues with the engine, clutch, brakes, steering, suspension, and a recurring petrol starvation problem.6th Nov 1928Box 65a \ 2  scan0092
Page 2 of a memo discussing a fuel starvation issue and requesting a report on its cause.7th Nov 1928Box 65a \ 2  scan0093
Introduction and features of the new 'SS' and G.4. chassis models.7th Nov 1928Box 65a \ 2  scan0094
Chassis improvements, production timelines, and the risks of being outdated.9th Nov 1928Box 65a \ 2  scan0095
Recommendations on connecting rods and crankshaft lubrication for the 'SS' engine.9th Nov 1928Box 65a \ 2  scan0096
Crankshaft oiling schemes for the Phantom and 'SS' models.7th Nov 1928Box 65a \ 2  scan0097
Urgent production of bodies for experimental 'SS' chassis to meet deadlines.7th Nov 1928Box 65a \ 2  scan0098
Secret internal memorandum deferring a board conclusion on the introduction of SS and G.4 models.28th Nov 1928Box 65a \ 2  scan0099
Telephone message regarding the 'SS' chassis, focusing on the changeover process and tappet design.12th Nov 1928Box 65a \ 2  scan0100
Improving cam and follower hardness, lubrication, and camshaft duration.8th Nov 1928Box 65a \ 2  scan0101
Response to a test report on the 12-EX car, addressing various mechanical issues.8th Nov 1928Box 65a \ 2  scan0102
Confidential memorandum discussing the introduction of new SS and G.4 chassis in light of the continued success of the Phantom model.12th Nov 1928Box 65a \ 2  scan0103
Secret memo from RJ to Sg. outlining key questions to inform the launch strategy for a new sporting model codenamed 'SS'.12th Nov 1928Box 65a \ 2  scan0104
Chassis alterations, testing protocols, and the risks of introducing a new chassis design.12th Nov 1926Box 65a \ 2  scan0105
Secret memo from B.J. to Sg. requesting information and arranging a conference in Derby.2nd Nov 1928Box 65a \ 2  scan0106
Final test routine and tyre fitting for the Experimental Sports Car 17-EX.13th Nov 1928Box 65a \ 2  scan0107
Post-test issues with the Experimental Sports Car 17-EX, including its special brakes and a broken screen wiper drive.15th Nov 1928Box 65a \ 2  scan0108
Secret internal memorandum comparing the specifications of the new 'SS' model to a previous experimental car, 14-EX.19th Nov 1928Box 65a \ 2  scan0109
Question and answer document regarding vehicle testing, alterations, and development timelines.7th Apr 1925Box 65a \ 2  scan0110
The development of the Phantom (EAC) engine and associated chassis between 1923 and 1924.15th Jan 1925Box 65a \ 2  scan0111
Typed historical summary of the development and testing of the Phantom and 'V' series chassis, including design changes and production instructions.15th Jan 1925Box 65a \ 2  scan0112
The Phantom car standardisation, the Condor engine's history, and the new SS chassis.15th Jan 1925Box 65a \ 2  scan0113
The experience of testing parts, specifically the lack of road experience for the 'SS' car.20th Nov 1928Box 65a \ 2  scan0114
Requesting to collect a luggage box for an SS vehicle to improve its appearance.20th Nov 1928Box 65a \ 2  scan0115
Completion of the first 'SS' chassis, its appearance, and the status of other components.20th Nov 1928Box 65a \ 2  scan0116
Production strategy for the 'SS' model, including the cessation of production for the RRAI 200 chassis.22th Nov 1928Box 65a \ 2  scan0117
Road test report on an 'SS' chassis, comparing its performance to the existing Phantom model.23th Nov 1928Box 65a \ 2  scan0118
Weight comparison table for the Standard 40/50 'V' Series and the 'SS' chassis.23th Nov 1928Box 65a \ 2  scan0119
Confidential memorandum from BJ to R regarding a conference on the introduction of the 'SS' and new 20 HP models.23th Nov 1928Box 65a \ 2  scan0120
Secrecy surrounding the 'SS' super-sports model chassis.26th Nov 1928Box 65a \ 2  scan0121
Secret memo from BJ to Hs requesting a summary of the 'SS' model's testing, development costs, and announcement timeline.26th Nov 1928Box 65a \ 2  scan0122
Delay in fitting a Barker body to chassis 18-EX due to incorrect dimensions.26th Nov 1928Box 65a \ 2  scan0123
Secret report detailing the impressive ride comfort of the 'SS' model on a 450-mile test run.28th Dec 1928Box 65a \ 2  scan0124
Performance comparison report of a new car model against the standard Phantom, noting various improvements and issues.12th Dec 1928Box 65a \ 2  scan0125
Testing status of certain car parts and the history of the V. series chassis.12th Dec 1928Box 65a \ 2  scan0126
List of incomplete parts for Chassis No 19EX.6th Dec 1928Box 65a \ 2  scan0127
From Hs. to BP. regarding arrangements for Mr. Yarnall to get particulars for the 18-EX car being sent to France.1st Dec 1928Box 65a \ 2  scan0128
Requesting recommendations for shipping a car to France, avoiding popular routes.6th Dec 1928Box 65a \ 2  scan0129
Telegram requesting photographs be taken of prototype car '18 EX' before it leaves for France.31th Dec 1938Box 65a \ 2  scan0130
Testing strategy for 'SS' and G.4. chassis ahead of next year's show.8th Dec 1928Box 65a \ 2  scan0131
Continued memo discussing vehicle options, driver availability, running schedules and performance expectations for quietness.10th Dec 1928Box 65a \ 2  scan0132
Informing of a change in plan to send car 14-EX to France instead of 18-EX.10th Dec 1928Box 65a \ 2  scan0133
Secret memorandum outlining measures to maintain the utmost secrecy regarding the 'SS' chassis project.10th Dec 1928Box 65a \ 2  scan0134
Clarifying that remarks on 'SGN' also apply to the new 20 HP model.10th Dec 1928Box 65a \ 2  scan0135
Arrangements for demonstrating the new 20HP car (14-G-4) and an 18-EX car, including a trip to France for modifications.11th Dec 1928Box 65a \ 2  scan0136
The dispatch of a 'Super-Sports' car for inspection by Mr. Royce.12th Dec 1928Box 65a \ 2  scan0137
Cancelling the touring acquit for car 12-EX, to be replaced by car 19-EX for a trip to France.17th Dec 1928Box 65a \ 2  scan0138
Secret memo discussing the trial results and potential drawbacks of the 18-RX model, particularly its length.17th Dec 1928Box 65a \ 2  scan0139
Secret internal memorandum detailing a road test of a new car model, covering its performance and handling.15th Dec 1928Box 65a \ 2  scan0140
Test report on a car's performance, discussing engine characteristics, vibrations, and other features.15th Dec 1928Box 65a \ 2  scan0141
Steering feel, body mounting on a sub-frame, and the hypoid axle gear.17th Dec 1928Box 65a \ 2  scan0142
Secret memo from BJ to R regarding a trial of the 18-EX, noting issues with jellying, steering, wheel size, and the car's excessive length.17th Dec 1928Box 65a \ 2  scan0143
Secret test report on a complete car, detailing its performance, handling, and appearance.15th Dec 1928Box 65a \ 2  scan0144
Vehicle performance, discussing steering vibration, engine characteristics, and other features.15th Dec 1928Box 65a \ 2  scan0145
Report discussing vehicle steering characteristics, subframe body mounting, and hypoid axle gearing.17th Dec 1928Box 65a \ 2  scan0146
Handling, wheel size, and length issues with the 18-EX experimental car following a trial.17th Dec 1928Box 65a \ 2  scan0147
The initial impressions of a new car's road test performance between Derby and West Wittering.15th Dec 1928Box 65a \ 2  scan0148
Vehicle performance, discussing steering column vibration, engine characteristics, and other features requiring attention.15th Dec 1928Box 65a \ 2  scan0149
Continued memorandum discussing steering ratios, subframe body mounting, and new hypoid axle gears.17th Dec 1928Box 65a \ 2  scan0150
Secret memo regarding a trial report for the 18-EX model, detailing issues and requesting updates on alterations.17th Dec 1928Box 65a \ 2  scan0151
Secret road test report on a complete car, detailing its performance, handling, and characteristics between Derby and West Wittering.15th Dec 1928Box 65a \ 2  scan0152


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