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
The mechanical efficiency of a La Salle steering box under static conditions.11th Jun 1934Box 22 \ 4  Scan019
Dimensions for an American straight-eight crankshaft, specifically a Pontiac model.8th Oct 1934Box 22 \ 4  Scan020
Cable received with the helix angle for Cadillac steering and comparing it to the LaSalle steering on the Spectre model.22th Nov 1934Box 22 \ 4  Scan021
List comparing the weights of different dynamo models.17th Apr 1935Box 22 \ 4  Scan022
Letter from Cadillac Motor Car Company discussing transmission gear design for silence.17th Apr 1935Box 22 \ 4  Scan023
From Cadillac Motor Car Company detailing the processing of LaSalle transmission gears.28th Sep 1932Box 22 \ 4  Scan024
The effectiveness of the 'Inco Lapping System' and experiments with a 'Michigan Tool Co's Gear Lapping Machine' for LaSalle gears.2nd Apr 1935Box 22 \ 4  Scan025
Letter from Cadillac Motor Car Company detailing their production methods for making transmission gears.2nd Apr 1935Box 22 \ 4  Scan026
Gear tooth lapping operations, interference, and contact, with a comparison to Cadillac and LaSalle transmissions.2nd Apr 1935Box 22 \ 4  Scan027
Exploded view diagram of a gearbox showing gear tooth contact specifications.21th May 1935Box 22 \ 4  Scan028
Official order for supercharger parts for a Graham-Paige vehicle.21th May 1935Box 22 \ 4  Scan029
Preliminary results of Joggle Tests on the 30-EX chassis.18th Nov 1935Box 22 \ 4  Scan030
Report comparing a 15 HP Lorraine-Dietrich car to the Goshawk 11, detailing its omissions and faults.23th Nov 1921Box 22 \ 4  Scan031
Recommending the purchase of a 20 HP Lorraine car for competitive analysis and comparison.13th Aug 1926Box 22 \ 4  Scan032
Ascertaining the price to obtain a 20 HP Lorraine car.16th Aug 1926Box 22 \ 4  Scan033
Recommendation to test a special 20 HP Lorraine car before purchase.1st Aug 1926Box 22 \ 4  Scan034
Potential purchase and trial of a 20 HP Lorraine car.23th Aug 1926Box 22 \ 4  Scan035
Arranging a trial run for a 20 HP Lorraine car.25th Aug 1926Box 22 \ 4  Scan036
Arrangement of a chassis trial for a 20-HP Lorraine car.31th Aug 1926Box 22 \ 4  Scan037
The potential purchase of a 20 HP 'Lorraine' Car and temporary importation logistics.2nd Sep 1926Box 22 \ 4  Scan038
From France about transporting parts back to Derby for tests and travel arrangements.5th Sep 1926Box 22 \ 4  Scan039
The decision on purchasing a 20 HP Lorraine car after testing.10th Sep 1926Box 22 \ 4  Scan040
Test report on the 6-cylinder Lorraine car that competed in the 24 Hours of Le Mans.10th Sep 1926Box 22 \ 4  Scan041
Road test report detailing the performance of a car's engine, clutch, brakes, steering, and suspension.10th Sep 1926Box 22 \ 4  Scan042
Summary report on a single-purpose car, critiquing its high-speed control and praising its engine.10th Sep 1926Box 22 \ 4  Scan043
The held-over purchase of a 20 HP Lorraine car.10th Sep 1926Box 22 \ 4  Scan044
Interest in a 20 Hp. Lorraine Car.14th Sep 1926Box 22 \ 4  Scan045
Trial of a 'LORRAINE' 20-HP car and requesting further instructions.9th Sep 1926Box 22 \ 4  Scan046
Pricing and specification for a 'Lorraine' chassis and 'Torpedo' seater.24th Sep 1926Box 22 \ 4  Scan047
Confidential memo detailing the specification and pricing for the 'Lorraine' chassis.24th Sep 1926Box 22 \ 4  Scan048
Letter from Société Lorraine providing a price quotation for their 15 CV Sport model chassis and car.21th Sep 1926Box 22 \ 4  Scan049
The second page of a formal letter written in French, ending with a salutation and a signature.21th Sep 1926Box 22 \ 4  Scan050
Specification sheet in French for the 15 RV 6-cylinder sports model chassis, '24-hour world road record' type.21th Sep 1926Box 22 \ 4  Scan051
Specification sheet in French detailing vehicle dimensions, steering, and accessories.27th Sep 1926Box 22 \ 4  Scan052
Quotation received from the Paris Depot for a Lorraine chassis and a 4-seater Torpedo.27th Sep 1926Box 22 \ 4  Scan053
Agreeing to obtain a Lorraine Dietrich car fitted with a body.30th Sep 1926Box 22 \ 4  Scan054
Telegram regarding the acquisition of a 'winning Lorraine' car versus a new car.7th Oct 1926Box 22 \ 4  Scan055
Telegram received by telephone concerning engine and new car delivery times after a show.7th Oct 1926Box 22 \ 4  Scan056
Purchase of a Sizaire car for research, front pivot design, and patenting a new suspension combination.8th Oct 1926Box 22 \ 4  Scan057
Outlining a planned visit to West Wittering to deliver a car and engine components.19th Oct 1926Box 22 \ 4  Scan058
Arrangements to collect a Lorraine Dietrich car in London and inspect another car at Barkers.20th Oct 1926Box 22 \ 4  Scan059
Confirming an order for experimental work and testing on a Lorraine car.25th Oct 1926Box 22 \ 4  Scan060
Querying the performance characteristics and faults of a Lorraine Deitrich car.27th Oct 1926Box 22 \ 4  Scan061
Comparison of various competitor chassis designs and steering mechanisms following a conference.27th Oct 1926Box 22 \ 4  Scan062
Faults and performance of a competitor's 20 HP Lorraine Deitritch vehicle.11th Feb 1926Box 22 \ 4  Scan063
Lorraine-Dietrich car and a suggestion for a Peto & Radford accumulator indicator.11th May 1926Box 22 \ 4  Scan064
Preliminary test report on the 20 HP Lorraine car, focusing on its power unit and performance characteristics.6th Nov 1926Box 22 \ 4  Scan065
Analysis of engine shaft period, power curve, and a comparative acceleration test between cars.6th Nov 1926Box 22 \ 4  Scan066
Performance comparison between a 20 HP RR and a Lorraine car, analysing M.E.P., acceleration, and engine characteristics.11th Sep 1926Box 22 \ 4  Scan067
Proposing a comparison by swapping the carburetter and induction systems between a Lorraine car and a 20 HP chassis.11th Sep 1926Box 22 \ 4  Scan068
From 'R' to 'Hs. E.' proposing to fit a Lorraine-style carburetter and induction system to the 40/50 lightweight engine.11th Nov 1926Box 22 \ 4  Scan069
Modifications to improve the speed and aerodynamics of the Sports Phantom model.11th Nov 1926Box 22 \ 4  Scan070
Competitor car design trends and features from Sunbeam, Lorraine, Lancia, and Panhard.15th Nov 1926Box 22 \ 4  Scan071
Distributing a blueprint sketch of a Lorraine car's combustion chamber.15th Nov 1926Box 22 \ 4  Scan072
Wire from Royce to Hives arranging permission for Mr. Minchin to drive the Lorraine.23th Nov 1926Box 22 \ 4  Scan073
Plan to return a Lorraine car to France for sale.18th Feb 1927Box 22 \ 4  Scan074
The re-exportation of a Lorraine car and the required documentation for the A.A.18th Feb 1927Box 22 \ 4  Scan075
Letter from The Automobile Association regarding an International Circulation Permit and Registration Card for a motor car.9th Feb 1927Box 22 \ 4  Scan076
Examination of the Lorraine Dietrich crankshaft, focusing on its synchronous speed and vibration characteristics.2nd Mar 1927Box 22 \ 4  Scan077
Experiments with the Goshawk engine's crankshaft, focusing on inertia, synchronous speed, and torsional vibrations.2nd Mar 1927Box 22 \ 4  Scan078
Graph comparing the crankshaft stiffness and torsional deflection of a 20 HP model against a Lorraine-Dietrich model.2nd Mar 1927Box 22 \ 4  Scan079
Blank document page with a purple ink date stamp in the bottom right corner.2nd Mar 1927Box 22 \ 4  Scan080
Blueprint of a piston, connecting rod, and gudgeon pin assembly for a Lorraine Dietrich engine.1st Mar 1927Box 22 \ 4  Scan081
Half-scale technical drawing of a Lorraine Dietrich crankshaft with various cross-sections and dimensions.1st Mar 1927Box 22 \ 4  Scan082
Lorraine Dietrich car, forwarding a previous communication to France and anticipating a duty payment.11th Mar 1927Box 22 \ 4  Scan083
Fitting a slipper wheel to a Lorraine Dietrich car to test torsional vibration damping.11th Mar 1927Box 22 \ 4  Scan084
Lorraine Dietrich car, a Triptyque customs document, the French Automobile Club and British Customs.28th Mar 1927Box 22 \ 4  Scan085
Reassembly and sale of a left-hand drive Lorraine Dietrich car.30th Mar 1927Box 22 \ 4  Scan086
The performance of a Lorraine-Dietrich engine on the test bench, with comparisons to the 20 HP and Goshawk engines.30th Mar 1927Box 22 \ 4  Scan087
Page 2 of a report detailing the specifications and performance characteristics of a six-cylinder engine.30th Mar 1927Box 22 \ 4  Scan088
Analysis of the Zenith triple diffuser carburettor induction system and its performance, including a plan view diagram.30th Mar 1927Box 22 \ 4  Scan089
Technical description of the engine's offset cylinder design and valve gear.30th Mar 1927Box 22 \ 4  Scan090
Comparison of engine performance characteristics, including valve lift and gas velocity, between different engine models.30th Mar 1927Box 22 \ 4  Scan091
Comparison of mechanical efficiency, friction losses, and ignition systems between Lorraine, Goshawk, and Phantom engines.30th Mar 1927Box 22 \ 4  Scan092
Engine testing, discussing ignition sensitivity, detonation, compression ratios, and combustion head design.30th Mar 1927Box 22 \ 4  Scan093
20 HP engine power curves, comparing compression ratios and induction pipe depression with a Lorraine engine.30th Mar 1927Box 22 \ 4  Scan094
Engine performance analysis and summary of conclusions, comparing a Lorraine engine to a 20 HP model.30th Mar 1927Box 22 \ 4  Scan095
Report page discussing crankshaft performance, a comparison between Lorraine and 20 HP engines, and planned experiments.18th Mar 1927Box 22 \ 4  Scan096
Diagram comparing the exhaust valve lift of a Lorraine-Dietrich engine and a 20 HP R.R. engine.18th Mar 1927Box 22 \ 4  Scan097
Reverse side of a document showing a date stamp.31th Mar 1927Box 22 \ 4  Scan098
Blueprint diagram comparing the inlet valve lift of a Lorraine-Dietrich engine with a 20hp R.R. engine.18th Mar 1927Box 22 \ 4  Scan099
Graph of Mechanical Efficiency and Compression Pressure curves for a Lorraine-Dietrich engine, compared with a 20 HP R.R. engine.21th Mar 1927Box 22 \ 4  Scan100
Graph comparing the power per unit cubic capacity and petrol consumption of a Lorraine-Dietrich engine and a 20 HP engine.16th Mar 1927Box 22 \ 4  Scan101
Power curve graph for a Lorraine-Dietrich engine with comparative data for a 20 HP Rolls-Royce engine.23th Mar 1927Box 22 \ 4  Scan102
Graph comparing the induction pipe depression of a Lorraine-Dietrich engine against a 20 HP R.R. engine.21th Mar 1927Box 22 \ 4  Scan103
Graph comparing the necessary ignition advance curves for a Lorraine-Dietrich engine against a Lighter Phantom engine.17th Mar 1927Box 22 \ 4  Scan104
Graph of performance curves showing gas velocity past valves for a Lorraine-Dietrich engine.25th Mar 1927Box 22 \ 4  Scan105
Comparison graph of Indicated Horse Power and Indicated Mean Effective Pressure curves for Lorraine-Dietrich and 20 HP engines.25th Mar 1927Box 22 \ 4  Scan106
Graph of the inlet valve lift and piston displacement curve for a Lorraine-Dietrich engine.22th Mar 1927Box 22 \ 4  Scan107
Graph of the inlet valve lift and piston displacement curve for a 20 HP engine.28th Mar 1927Box 22 \ 4  Scan108
Graph plotting the power necessary to rotate a Lorraine-Dietrich engine against its RPM.29th Mar 1927Box 22 \ 4  Scan109
Valve spring rating chart for a Lorraine-Dietrich engine.29th Mar 1927Box 22 \ 4  Scan110
Specification comparison between the Lorraine-Dietrich engine and the standard 20 HP R.R. engine.30th Mar 1927Box 22 \ 4  Scan111
Extremely faded and almost completely illegible document with a purple date stamp in the bottom right corner.31th Mar 1927Box 22 \ 4  Scan112
Power development experiments on a 20 HP engine by analysing the Lorraine Dietrich engine.1st Apr 1927Box 22 \ 4  Scan113
Comparative bench tests between larger diameter valves and standard valves, using Zenith carburettors.1st Apr 1927Box 22 \ 4  Scan114
Increasing power output by lowering induction pipe depression, comparing different carburetter configurations.1st Apr 1927Box 22 \ 4  Scan115
Engine power increases achieved through the use of larger valves and different carburettor setups.1st Apr 1927Box 22 \ 4  Scan116
Engine performance improvements by modifying carburettors, valves, and compression ratios, with comparisons to a Lorraine engine.1st Apr 1927Box 22 \ 4  Scan117
Summary and conclusions from tests to increase the power of a 20 HP engine, referencing the Lorraine engine.1st Apr 1927Box 22 \ 4  Scan118


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