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
Proposing dynamometer and consumption tests for a Packard car to compare it with the 'After-The-War' chassis.23th May 1917Morton \ M22  img015
Comparison of power curves for an engine using different induction pipe and carburetter configurations.6th Jun 1917Morton \ M22  img016
Carburettor performance, induction pipe configuration, and engine fuel consumption.24th Feb 1908Morton \ M22  img017
The road performance and fuel consumption of the 7-CA car.11th Jun 1917Morton \ M22  img018
Note on the petrol consumption of car 7-CA at various speeds.10th Jul 1917Morton \ M22  img019
Road test comparison between cars 7-CA and 49-GB from Derby to West Wittering.30th May 1918Morton \ M22  img020
Inquiry about the properties and applications of the metal alloy 'Invar' and soldering stainless steel.4th Nov 1918Morton \ M22  img021
Specifications for a dynamo and ignition system for a 4 1/2' car engine, and issues with a previous Lucas system.11th Nov 1918Morton \ M22  img022
Requirements and comparative analysis of car dynamo systems.11th Nov 1918Morton \ M22  img023
Lamp testing, lighting reliability, and the weight of accessories.20th Nov 1918Morton \ M22  img024
New standard car model for the post-war period, detailing various improvements.20th Nov 1918Morton \ M22  img025
Outlining proposed post-war modifications for the 40/50 HP chassis, specifically regarding back axle tubes.26th Nov 1918Morton \ M22  img026
Design notes regarding the manufacturing of bevel gears, transmission components, and brake liners.26th Nov 1918Morton \ M22  img027
Alternatives for aluminium brake shoes, road wheels, and steering gear components.26th Nov 1918Morton \ M22  img028
Modifications to a cross steering tube, a new joint design, and a stub axle failure.26th Nov 1918Morton \ M22  img029
Design details for road springs, aluminium pistons, and valves.26th Nov 1918Morton \ M22  img030
Ignition gear modifications, trembler coil issues, and valve spring breakages.26th Nov 1918Morton \ M22  img031
Modifications to coils and condensers, with a note that further details on radiators, starters, and dynamos will follow.26th Nov 1918Morton \ M22  img032
Carburation and fuel consumption tests on car 49-GB, comparing post-war and pre-war petrol performance.1st Feb 1919Morton \ M22  img033
On fitting a radiator blind and the impact of aluminium versus cast iron pistons on engine carburation in cold weather.1st Feb 1919Morton \ M22  img034
Engine performance improvements observed after partially blocking the radiator to increase running temperature.13th Mar 1919Morton \ M22  img035
Radiator modifications and an extra water jacket for Car 7-CA to improve engine performance.13th Mar 1919Morton \ M22  img036
Consumption test report for a 40/50 chassis at various speeds.12th May 1919Morton \ M22  img037
Sending K.L.G. sparking plugs for chassis X.1918, with cleaning instructions and notes on a new spring wire terminal.14th May 1919Morton \ M22  img038
Stiff and seized brake cable forks on chassis 7 CA, including Mr. Royce's recommendations for modifications.1st Aug 1919Morton \ M22  img039
The testing of a low-geared back axle to improve acceleration and performance.12th Feb 1920Morton \ M22  img040
Brooklands test results for the 49 GB model, focusing on the selection of axle gears for different body types.25th Jun 1920Morton \ M22  img041
Test data sheet comparing acceleration and speed with different car configurations and axle ratios.19th Jul 1917Morton \ M22  img042
Axle ratios and tyre sizes affecting car speeds for pre-war 40/50 models.30th Jun 1920Morton \ M22  img043
400-mile test run of chassis 1.E.X, detailing performance, fuel consumption, and vibration issues.28th Jul 1919Morton \ M22  img044
Car's performance, noting its success but detailing issues with piston knocking when cold and lubrication.21th Aug 1919Morton \ M22  img045
Solutions for piston knock issues, focusing on engine oiling systems and extra lubrication during starting.21th Aug 1919Morton \ M22  img046
Engine piston performance, compression, and lubrication issues.21th Aug 1919Morton \ M22  img047
Extract detailing tests on engine oiling, consumption, carbon deposits, and piston design modifications.20th Sep 1919Morton \ M22  img048
Modifications to the battery ignition system and their effects on engine performance.3rd Nov 1919Morton \ M22  img049
Ignition faults, attributing sooty plugs to poor quality petrol and recommending porcelain plugs as a remedy.1st Nov 1919Morton \ M22  img050
Refitting of chassis 49 GB and 1 EX with newly standardised parts.1st Nov 1919Morton \ M22  img051
Expressing frustration over delays in implementing improved battery ignition wiring to make it more efficient and less 'scraggy'.9th Dec 1919Morton \ M22  img052
Dissatisfaction with existing electrical wiring and instructing the procurement of neater, smaller diameter wire.8th Dec 1919Morton \ M22  img053
Dissatisfaction with the electrical work and finish on a model chassis.8th Dec 1919Morton \ M22  img054
Investigation into battery ignition failure, concluding that wider spark plug gaps prevent misfiring at low charges.30th Dec 1919Morton \ M22  img055
Experiments to improve battery ignition by adjusting spark gaps, insulation, and coil windings.30th Dec 1919Morton \ M22  img056
Starter switch position and ignition coil construction.8th Jan 1920Morton \ M22  img057
Decision to revert to pinned valve tappets for the 40/50 HP chassis due to noise issues.1st Nov 1919Morton \ M22  img058
Sale of an experimental car and specifications for its replacement, including paint and material details.24th Mar 1920Morton \ M22  img059
Ignition and Klaxon failure on chassis 1 EX due to a blown fuse, discussing the reliability of Lucas components.10th Jun 1920Morton \ M22  img060
Design flaw with the junction/distribution box on the 40/50 HP chassis.1st Jun 1920Morton \ M22  img061
Cause of noisy 'singing' dynamos, suggesting the issue is slack bearings.1st Jul 1920Morton \ M22  img062
Engine overhaul of chassis 1 EX and its oil change to 'Castrol'.9th Aug 1920Morton \ M22  img063
Test report on a car's performance after a 300-mile run, noting its speed, handling, and fuel consumption.8th Aug 1920Morton \ M22  img064
Condition and recommended work on a car, covering tyres, dynamo, carburettor, and exhaust.10th Aug 1920Morton \ M22  img065
Test report on the performance of car model 1.EX after a 300-mile drive, covering speed, handling, tyres, and fuel consumption.10th Aug 1920Morton \ M22  img066
Modification work on car 1.EX and proposing an exchange for car 6.EX.31th Aug 1920Morton \ M22  img067
From Mr. Royce detailing the performance evaluation of the 1.EX car after a 2,000-mile run.26th Sep 1920Morton \ M22  img068
Technical discussion on improving vehicle ride comfort by modifying tyres and suspension systems.26th Sep 1920Morton \ M22  img069
Continued report on car performance, discussing the Hawk aero engine, suspension, and driving experience.26th Sep 1920Morton \ M22  img070
Diagnosing an engine thud caused by a loose front cylinder block and proposing modifications.14th Oct 1920Morton \ M22  img071
Listing parts required to fix a loose cylinder block, including a magneto drive and gearbox components.20th Oct 1920Morton \ M22  img072
The performance improvements of fitting a 14/52 axle ratio to a 1.EX car.2nd May 1921Morton \ M22  img073
Cover letter for horsepower curves of the standard 40/50 engine with high and low compression.5th May 1921Morton \ M22  img074
Blueprint graph showing M.E.P. and Torque curves from Bench and Dynamometer tests.5th May 1921Morton \ M22  img075
Reverse side of a technical document or blank gridded paper.5th May 1921Morton \ M22  img076
Performance chart showing horsepower, torque, and M.E.P. curves under various test conditions.5th May 1921Morton \ M22  img077
Blueprint graph showing performance data for different back axle ratios and tyre sizes.5th May 1921Morton \ M22  img078
Performance graph for the 40/50 Chassis Engine, plotting various metrics against Revolutions Per Minute.5th May 1921Morton \ M22  img079
Graph titled 'Low Compression' showing a relationship against revolutions per minute.5th May 1921Morton \ M22  img080
Comparative test of a 1.EX car with a 14-tooth axle against an open Trials Car.24th Jun 1921Morton \ M22  img081
Performance test results for different axle ratios at Brooklands.13th Sep 1922Morton \ M22  img082
Performance test results for car 1.EX, a 4-seater open touring body, under various conditions.13th Sep 1922Morton \ M22  img083
Performance test results for car 1.EX, a 4-seater open touring body, comparing high and low compression engine configurations.13th Feb 1920Morton \ M22  img084
List of 19 criticisms and required changes for the '1 EX' car for West Wittering, including performance feedback.13th Feb 1920Morton \ M22  img085
Requested modifications for a new car, model 4 EX.21th Apr 1920Morton \ M22  img086
Page discussing opinions on fabric universals, back axle ratios, side fillers, and paint colour schemes.1st Apr 1920Morton \ M22  img087
Extract detailing a list of parts and modifications for a car destined for West Wittering.19th Apr 1920Morton \ M22  img088
Replacement of car 1.EX, outlining difficulties with fitting a new body, and proposing a new chassis and body design with a four to five-month timeline.4th Apr 1940Morton \ M22  img089
Typed letter requesting modifications to a car's body, steering, and controls for a car destined for West Wittering.6th May 1920Morton \ M22  img090
Fitting of a luggage grid and a detailed analysis of rear spring squeaking, suggesting solutions.31th May 1920Morton \ M22  img091
Preferred grey paint colour for chassis 6 EX.9th Jun 1920Morton \ M22  img092
List of experimental parts fitted to car 6.EX, confirming arrangements to arrive at West Wittering.8th Jun 1920Morton \ M22  img093
Internal memorandum discussing wire wheels, tyres, and paint options for experimental chassis 1 EX and 6 EX.14th Jun 1920Morton \ M22  img094
Testing and replacement of low tension contact points for a battery ignition system.30th Jun 1920Morton \ M22  img095
'R' detailing the need to expedite experimental work and production on new chassis, engines, and electrical components.14th Jul 1920Morton \ M22  img096
First impressions report and technical notes on the 6 EX chassis.22th Jul 1920Morton \ M22  img097
Reviewing and providing feedback on various car components such as axles, springs, and bodywork.1st Jul 1920Morton \ M22  img098
Technical memo discussing issues with dynamo and speedometer drives, and proposals for future seating proportions.1st Oct 1929Morton \ M22  img099
Standardisation of the earthed wiring scheme on the 6.EX Car.20th Jul 1920Morton \ M22  img100
The standardization of an earthed wiring scheme, single contact bulbs, and the quality of dynamos.20th Jul 1920Morton \ M22  img101
Modifications to switchboards and wiring for the Smith Dynamo, including a fault report.20th Jul 1920Morton \ M22  img102
Instructions regarding seating, screen, and instrument board for a new body on chassis 6 EX.21th Jul 1920Morton \ M22  img103
Bodywork modifications and requesting blueprints for chassis 6 EX.21th Jul 1920Morton \ M22  img104
Arranging a meeting in Peterborough with chassis 6 EX and confirming a drawing has been sent to Derby.21th Jul 1920Morton \ M22  img105
Notes on the 6 EX model, covering the switchbox, battery, starter, primer, and bodywork, following a visit to West Wittering.22th Jul 1920Morton \ M22  img106
Design and testing considerations for bodywork, steering, road wheels, and road springs.22th Jul 1920Morton \ M22  img107
Alterations to the petrol tank side filler and the dispatch of a distribution board model.22th Jul 1920Morton \ M22  img108
Notes on required modifications for various vehicle components following a visit and memo.22th Jul 1920Morton \ M22  img109
Design and testing of bodywork, steering, wheels, and springs.22th Jul 1920Morton \ M22  img110
Design notes regarding the petrol tank side filler and the distribution board.22th Jul 1920Morton \ M22  img111
Instructions for a new Park-Ward body for chassis 6 EX, detailing seat dimensions, colour, and other requirements.23th Jul 1920Morton \ M22  img112
Results of fitting Smith dynamos and discussing suitable switchboard options for experimental cars.24th Jul 1920Morton \ M22  img113
Comparison of three alternative electrical switchboard and wiring systems, including options from Lucas and Smith.24th Jul 1920Morton \ M22  img114


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