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                
Choose Archive


Browsing Records        Page 2184 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Report recommending a design modification to new shock absorbers to prevent mud collection.25th Jul 1919Box 180 \ M3 \ M3.6  img036
The fitting of new rear shock absorbers on car 49-GB.5th Jun 1919Box 180 \ M3 \ M3.6  img037
Completion date of a new car and proposing to fit large ventilators to cure hot floorboards.5th Jun 1919Box 180 \ M3 \ M3.6  img038
Effectiveness and design of radiator shutters and bonnets for the 40/50 chassis.5th Jun 1919Box 180 \ M3 \ M3.6  img039
Recommendation for an alteration regarding the engagement of spring clips, continued on page 2.1st Jun 1919Box 180 \ M3 \ M3.6  img040
Recommending an aluminium radiator blanking-off piece over a 3-ply wood version for the 40/50 chassis.5th Jun 1919Box 180 \ M3 \ M3.6  img041
The mileage of short connecting rods fitted to chassis 49-CB and I.E.X.7th Jun 1919Box 180 \ M3 \ M3.6  img042
Hard spots on aluminium pistons for the 40/50 ATW chassis, recommending they be cleared around the gudgeon pin hole.21th Jun 1919Box 180 \ M3 \ M3.6  img043
Testing a new water bye-pass pipe for the 40/50 chassis cooling system, including temperature results and a proposed valve design.10th Jun 1919Box 180 \ M3 \ M3.6  img044
Radiator temperature control, blanking, and the complexity of a driver-operated valve.10th Jun 1919Box 180 \ M3 \ M3.6  img045
The testing of 'Rapid' Jacks from Mr. Lionel Rapson and the subsequent negative recommendation for their use.27th Jun 1919Box 180 \ M3 \ M3.6  img046
Report criticising permanently fixed car jacks for their excessive weight, poor locking device, and overall low quality.27th Jun 1919Box 180 \ M3 \ M3.6  img047
Continued discussion on car jack designs, comparing operating times and proposing the addition of axle pads.27th Jun 1919Box 180 \ M3 \ M3.6  img048
Letter proposing the integration of Rapson Jacks into the chassis for enhanced safety.14th Jun 1919Box 180 \ M3 \ M3.6  img049
Page 2 of a letter from F. Lionel Rapson concerning the 'Rapid' Jack Co. and advertising.16th Apr 1919Box 180 \ M3 \ M3.6  img050
Specification document detailing the price, weight, and materials for 'Rapson' Jacks.16th Apr 1919Box 180 \ M3 \ M3.6  img051
The effects of moving rear springs from below to above the axle to improve road holding.27th Jun 1919Box 180 \ M3 \ M3.7  img001
Road testing suspension performance, measuring rear wheel revolutions at various speeds and tyre pressures.27th Jun 1919Box 180 \ M3 \ M3.7  img002
The intention to compare rear springs positioned above and below the axle.27th Jun 1919Box 180 \ M3 \ M3.7  img003
The trial of a new type of shock absorber and its comparison to the Trauffault model.27th Jun 1919Box 180 \ M3 \ M3.7  img004
Hand-drawn sketch of a component's cross-section with dimensional annotations.27th Jun 1919Box 180 \ M3 \ M3.7  img005
The expansion and necessary clearances for aluminium and cast iron pistons, including a diagram with measurements.27th Jun 1919Box 180 \ M3 \ M3.7  img006
Heat expansion test results for various cast iron and aluminium pistons.27th Jun 1919Box 180 \ M3 \ M3.7  img007
Controlling engine water temperature, suggesting a radiator bye-pass scheme to prevent piston knock during city driving.22th Jul 1919Box 180 \ M3 \ M3.7  img008
Suggestion to fit primers to pre-electric starting cars to assist with hand-starting on the 40/50 Chassis.22th Jul 1919Box 180 \ M3 \ M3.7  img009
Dynamo drive belt slippage and noise produced by different dynamo models.1st Aug 1919Box 180 \ M3 \ M3.7  img010
Modifications to Lucas dynamos to reduce noise and address ball bearing failures.1st Aug 1919Box 180 \ M3 \ M3.7  img011
Diagnosing and fixing engine knocking and pre-ignition issues in car 7-CA.12th Aug 1919Box 180 \ M3 \ M3.7  img012
Engine knocking caused by tight pistons and pre-ignition from incorrect sparking plugs.12th Aug 1919Box 180 \ M3 \ M3.7  img013
The 40/50 chassis bumping test, detailing the rig setup, modifications, and comparison to pre-war tests.18th Aug 1919Box 180 \ M3 \ M3.7  img014
Engine knocking issues with aluminium pistons on standard cars.18th Aug 1919Box 180 \ M3 \ M3.7  img015
Piston knock standards, clearances, and the risk of seizure for different piston materials.22th Aug 1919Box 180 \ M3 \ M3.7  img016
Piston knock issues with aluminium pistons, design alterations, and the proposed customer communication strategy.19th Nov 1924Box 180 \ M3 \ M3.7  img017
Curing piston knocks and the consequences of fitting certain pistons to meet the limits set by the Sales Department.11th Apr 1925Box 180 \ M3 \ M3.7  img018
The method to reduce piston knocks in a cold engine using late ignition.25th Aug 1919Box 180 \ M3 \ M3.7  img019
Report recommending modifications to the improved clutch brake design for the 40/50 chassis.26th Aug 1919Box 180 \ M3 \ M3.7  img020
The design of standard oil pumps, noting the 20° obliquity gears and absence of noise complaints.29th Aug 1919Box 180 \ M3 \ M3.7  img021
Test note regarding the performance of standard brakes holding a car on a gradient.3rd Nov 1911Box 180 \ M4 \ M4.1  img001
For the Technical Committee regarding shortening rear brake liners to prevent them from catching.6th Dec 1911Box 180 \ M4 \ M4.1  img002
Note querying if extra rivets could be fitted to a metal component.26th Jan 1921Box 180 \ M4 \ M4.1  img003
Comparing the steering system of a 'Marmon' car with the company's own system.26th Jan 1921Box 180 \ M4 \ M4.1  img004
Steering perfection through the use of vertical pins, tyre balance, and vehicle stability.24th Jan 1921Box 180 \ M4 \ M4.1  img005
Report comparing the engine performance, gear ratios, and fuel consumption of a Marmon car to the standard 40/50 chassis.2nd Feb 1921Box 180 \ M4 \ M4.1  img006
Performance and specification data for a Marion Car.16th Dec 1920Box 180 \ M4 \ M4.1  img007
Test report detailing vehicle performance characteristics including braking, engine timing, and suspension.16th Dec 1920Box 180 \ M4 \ M4.1  img008
Specifications for turning circle, transmission, inlet valve, springs, and chassis details.4th Apr 1922Box 180 \ M4 \ M4.1  img009
Recommendation to perform a dynamometer curve test on an Essex car before it is disposed of.4th Apr 1922Box 180 \ M4 \ M4.1  img010
Performance and specification report for an Essex Car.19th Jan 1921Box 180 \ M4 \ M4.1  img011
Technical specifications and test results for an Essex Car.19th Jul 1917Box 180 \ M4 \ M4.1  img012
List of specifications for the Essex Car, with a sketch of the brake lever and quadrant.4th Jan 1921Box 180 \ M4 \ M4.1  img013
Comparison of American cars with the Napier regarding driving experience, comfort, and gear lever design.10th Feb 1921Box 180 \ M4 \ M4.1  img014
Specification and performance data sheet for a Humber Car 15.9 Horse Power.12th Mar 1921Box 180 \ M4 \ M4.1  img015
Performance test report detailing vehicle clutch, brakes, engine, and suspension specifications.10th Dec 1907Box 180 \ M4 \ M4.1  img016
Continued analysis and critique of a Humber Car's components and design.16th Dec 1920Box 180 \ M4 \ M4.1  img017
Humber Car valve contours, detailing lift measurements at various degrees for inlet and exhaust cams.10th Dec 1930Box 180 \ M4 \ M4.1  img018
Hill climb performance data for a Humber Car loaded with the equivalent of four passengers.17th Mar 1921Box 180 \ M4 \ M4.1  img019
Starter gear failure in a Marmon car, comparing its torsional spring drive with other Bendix pinion systems.17th Mar 1921Box 180 \ M4 \ M4.1  img020
Sending a blueprint for the Goshawk 11 Dumb Iron, which has been made 30% longer.11th Apr 1922Box 180 \ M4 \ M4.1  img021
Advising of four American cars for sale and requesting their cost price.14th Jan 1921Box 180 \ M4 \ M4.1  img022
Sale and valuation of several American cars, highlighting depreciation due to their left-hand drive configuration.24th May 1921Box 180 \ M4 \ M4.1  img023
Prices and condition of second-hand American cars for sale.26th Jan 1921Box 180 \ M4 \ M4.1  img024
Letter from International Distributors Ltd. regarding a scale drawing of a 7-passenger limousine.30th Oct 1935Box 180 \ M4 \ M4.1  img025
Letter discussing the Hupmobile car and declining a request to exchange rides with a Phantom III due to high demand.11th Nov 1935Box 180 \ M4 \ M4.1  img026
The particulars of a 'Buick' car.5th May 1919Box 180 \ M4 \ M4.1  img027
Engine horsepower, valve timing, and valve contour data tables.1st May 1919Box 180 \ M4 \ M4.1  img028
Short test runs of competitor cars from the Olympia Show, including Hispano-Suiza, Napier, Lanchester, and Packard.11th Nov 1920Box 180 \ M4 \ M4.1  img029
Continued road test report comparing a Lanchester car to other vehicles.11th Nov 1920Box 180 \ M4 \ M4.1  img030
Performance and handling comparison of a Packard vehicle, noting issues with brakes, gears, steering, and starting.11th Nov 1920Box 180 \ M4 \ M4.1  img031
The performance data of a Hispano servo.1st Mar 1924Box 180 \ M4 \ M4.1  img032
The performance and efficiency of a servo mechanism.1st Mar 1924Box 180 \ M4 \ M4.1  img033
Hispano car, detailing clutch performance, engine issues with seized pistons, and a correction on a steering measurement.16th Jan 1924Box 180 \ M4 \ M4.1  img034
Steering specifications for a Hispano model.1st Feb 1924Box 180 \ M4 \ M4.1  img035
The particulars and rating of Hispano front springs.1st Mar 1924Box 180 \ M4 \ M4.1  img036
Obtaining data from a Hispano engine.11th Mar 1924Box 180 \ M4 \ M4.1  img037
Comparing the specifications and power output of Hispano and E.A.C. engines.11th Mar 1924Box 180 \ M4 \ M4.1  img038
Distribution, valve temperature, and the effects of dual ignition on a Hispano engine.11th Mar 1924Box 180 \ M4 \ M4.1  img039
Indicator work and performance tests carried out on a Hispano engine.12th Jul 1923Box 180 \ M4 \ M4.1  img040
Report page discussing the performance of an indicator valve regarding detonation and efficiency.12th Jul 1923Box 180 \ M4 \ M4.1  img041
Hispano indicator diagrams taken at 1500 and 2500 RPM.12th Jul 1923Box 180 \ M4 \ M4.1  img042
Diagram of the Hispano clutch operating mechanism and associated force calculations.7th Feb 1924Box 180 \ M4 \ M4.2  img001
Calculations and diagrams for the Goshawk clutch mechanism with M1 plug.7th Feb 1924Box 180 \ M4 \ M4.2  img002
Technical drawing showing different views and dimensions of an axle pivot.7th Feb 1924Box 180 \ M4 \ M4.2  img003
Drawing showing three views of a cylinder block.7th Feb 1924Box 180 \ M4 \ M4.2  img004
Technical drawing of the arrangement of a clutch, including a top-half sectional view.7th Feb 1924Box 180 \ M4 \ M4.2  img005
Diagram showing the distance between the centre of the tyre and the centre of the pivot pin when in contact with the road.7th Feb 1924Box 180 \ M4 \ M4.2  img006
Schematic diagram of Hispano Suiza steering details and components.7th Feb 1924Box 180 \ M4 \ M4.2  img007
Performance graph of a Hispano engine, plotting pressure against crank angles.25th Feb 1923Box 180 \ M4 \ M4.2  img008
Graph of piston displacement for crank angles with performance data from a Hispano engine test.25th Feb 1923Box 180 \ M4 \ M4.2  img009
Performance curves for a Hispano engine, showing cooling water flow versus induction pipe depression.25th Feb 1923Box 180 \ M4 \ M4.2  img010
Graph comparing the specific output (BHP/Litre) versus RPM for E.A.C. and Hispano engine configurations.25th Feb 1923Box 180 \ M4 \ M4.2  img011
Graph comparing B.M.E.P. against conventional gas velocity for Hispano and E.A.C. past valves.25th Feb 1923Box 180 \ M4 \ M4.2  img012
Graph comparing ignition advance against engine RPM for E.A.C. and Hispano engines, detailing detonation and the effect of dual ignition.25th Feb 1923Box 180 \ M4 \ M4.2  img013
Graph plotting inlet valve displacement against piston displacement, comparing 'Hispano' and 'E.A.C.' curves.25th Feb 1923Box 180 \ M4 \ M4.2  img014
Graph comparing E.A.C. & Hispano inlet valve lift diagrams.25th Feb 1923Box 180 \ M4 \ M4.2  img015
Performance graph comparing Horsepower (HP) and Mean Effective Pressure (M.E.P.) curves for Hispano and E.A.C. engines.25th Feb 1923Box 180 \ M4 \ M4.2  img016
Performance graph showing B.HP, B.M.E.P., thermal efficiency, and consumption against R.P.M., including a valve timing diagram.25th Feb 1923Box 180 \ M4 \ M4.2  img017
Wiring diagram for the connections of a Lucas dynamo and vehicle lamps.25th Feb 1923Box 180 \ M4 \ M4.2  img018
Wiring diagram for a Lucas Dynamo Lighting Set.25th Feb 1923Box 180 \ M4 \ M4.2  img019
Blueprint showing the design and dimensions of a connecting rod.25th Feb 1923Box 180 \ M4 \ M4.2  img020
Blueprint of a clutch assembly with multiple views and dimensions.25th Feb 1923Box 180 \ M4 \ M4.2  img021


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙