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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Letter to Luvax Ltd. regarding tests on their NP.3 shock absorbers for the 25 HP car.11th Aug 1931Box 28 \ 1  Scan261
Analysis of shock absorber performance issues under different loads, temperatures, and oil viscosity.11th Aug 1931Box 28 \ 1  Scan262
The performance and faults of Luvax Ltd. shock absorbers, including analysis of oil viscosity and leakage.11th Aug 1931Box 28 \ 1  Scan263
Letter to Luvax Ltd. discussing the performance and test results of a shock absorber, referencing specific diagrams.8th Jul 1931Box 28 \ 1  Scan264
Blueprint detailing dimensions and calculations for a Luvax Damper Type M.P.III.8th Jul 1931Box 28 \ 1  Scan265
Series of indicator diagrams for a Luvan M.Phantom III under various load and temperature conditions.11th Aug 1931Box 28 \ 1  Scan266
Blank document page with a purple date stamp from the Derby office.11th Aug 1931Box 28 \ 1  Scan267
Series of six graphs comparing Luxan M.P. III high and low pressure performance under various load and oil conditions.8th Jul 1931Box 28 \ 1  Scan268
Stamped blank page, likely a divider or the back of a document.11th Aug 1931Box 28 \ 1  Scan269
Four performance graphs for the LuvaX M.Phantom II component under various test conditions.8th Jul 1931Box 28 \ 1  Scan270
Four graphs comparing 'LUNAR L.C.' low and high pressure tests under different load, stroke, and temperature conditions.13th Jul 1931Box 28 \ 1  Scan271
Blank document page with a Print Room stamp.11th Aug 1931Box 28 \ 1  Scan272
Four indicator diagrams for a 'Lulax LC' component under different pressure and temperature conditions.13th Jul 1931Box 28 \ 1  Scan273
Blank document page with a purple archival date stamp.1st Aug 1981Box 28 \ 1  Scan274
Letter from Joseph Lucas Limited regarding a proposed meeting date with a representative.21th Aug 1931Box 28 \ 1  Scan275
Letter to Joseph Lucas Ltd. rescheduling a meeting with their representative.22th Aug 1931Box 28 \ 1  Scan276
Comparison of the manufacturing and design differences between 'Delco' and 'HS/Rm' type split damper pistons.31th Aug 1931Box 28 \ 1  Scan277
Comparison of manufacturing operation sequences for 'Delco' and 'HS/Rm' type pistons.15th Oct 1931Box 28 \ 1  Scan278
Blueprint detailing the probable manufacturing operations for a 'Delco' Damper Piston.15th Oct 1931Box 28 \ 1  Scan279
Requesting the procurement of 5 gallons of Lovejoy oil and a cost comparison for its use in shock absorbers.21th Sep 1931Box 28 \ 1  Scan280
Letter from Joseph Lucas Limited arranging a meeting to discuss Shock Absorbers.22th Sep 1931Box 28 \ 1  Scan281
Letter to Messrs. J. Lucas Ltd. regarding a meeting to discuss shock absorbers.24th Sep 1931Box 28 \ 1  Scan282
The respective costs of Air Compressor Oil and 'Lovejoy' Oil.30th Sep 1931Box 28 \ 1  Scan283
General arrangement of Marles Steering Gear R7 Type RH.29th Jul 1930Box 28 \ 2  Scan001
Blueprint showing the layout of a right-hand 'Q' gear assembly and its connection points.1st Oct 1932Box 28 \ 2  Scan002
Various steering gear systems and their respective advantages and disadvantages.10th Jul 1925Box 28 \ 2  Scan003
Steering system alternatives, modifications, and testing of different worm pitches.17th Jul 1925Box 28 \ 2  Scan004
The experimental fitting of a Marles steering gear to a New Phantom chassis.8th Jul 1925Box 28 \ 2  Scan005
Requesting that the Marle steering gear be made suitable for 'D' steering.1st Jul 1925Box 28 \ 2  Scan006
Arrangements for a new Phantom special steering column of the Marles type.1st Sep 1925Box 28 \ 2  Scan007
Comparative test report on Marles steering versus the new Phantom steering.2nd Feb 1926Box 28 \ 2  Scan008
Performance comparison of Marles steering against other steering systems, focusing on ratio and efficiency.2nd Feb 1926Box 28 \ 2  Scan009
Comparison of the effort required for 'Good EAC. Steering' versus 'Marles Steering'.2nd Feb 1926Box 28 \ 2  Scan010
Graph and data table comparing the ratio of movement of the steering wheel to the pendulum lever for the New Phantom and Marles steering systems.3rd Mar 1926Box 28 \ 2  Scan011
Request for clarification regarding a reference to lubricated and unlubricated readings for Marles Steering.3rd Mar 1926Box 28 \ 2  Scan012
Clarifying figures from a report on lubricated vs. un-lubricated tests for Marles and Phantom steerings.9th Mar 1926Box 28 \ 2  Scan013
Letter from Adamant Engineering Company regarding the performance of their Marles Steering Gear during a world record attempt.29th Apr 1926Box 28 \ 2  Scan014
Letter from HPG. Brakenridge & Co., representatives for 'Marles' Steering Gear, requesting feedback on a supplied trial set.16th Aug 1926Box 28 \ 2  Scan015
Letter to Messrs. HPG. Brakenridge & Co. regarding the experimental Marles Steering Gear.23th Aug 1926Box 28 \ 2  Scan016
Requesting tests on a Marles steering system for the 98-NK car.26th Oct 1927Box 28 \ 2  Scan017
Request to manufacture and fit a steering column support for a Marles steering column on chassis 98-NK.15th Nov 1927Box 28 \ 2  Scan018
Requirements for carrying out steering experiments on a test vehicle.22th Jul 1932Box 28 \ 2  Scan019
Inquiry to the Adamant Engineering Co. Ltd. regarding improvements and comparisons of their Marles steering box.22th Jul 1932Box 28 \ 2  Scan020
Letter from Adamant Engineering Company regarding modifications to the Marles Steering Gear.25th Jul 1932Box 28 \ 2  Scan021
Letter from Adamant Engineering Company regarding the testing of steering gear and a comparison with American types.25th Jul 1932Box 28 \ 2  Scan022
Letter to Adamant Engineering Co., Ltd. regarding modifications and pricing for steering improvements.27th Jul 1932Box 28 \ 2  Scan023
Letter from HPG. Brakenridge & Co., representatives for Adamant Engineering, requesting an appointment.28th Jul 1932Box 28 \ 2  Scan024
Letter to HPG. Brakenridge & Co. arranging a meeting about experiments on a P.2 car's Marles steering gear.30th Jul 1932Box 28 \ 2  Scan025
Letter from Adamant Engineering Company regarding a proposal for modifying a Marles Steering Gear.3rd Aug 1932Box 28 \ 2  Scan026
Letter from Adamant Engineering Company Limited regarding the supply and design of steering gears.3rd Aug 1932Box 28 \ 2  Scan027
Letter from HPG. Brakenridge & Co. arranging a visit to the works.3rd Aug 1932Box 28 \ 2  Scan028
Letter from Adamant Engineering Company regarding a cancelled visit to test Marles Steering on a P2 car.9th Aug 1932Box 28 \ 2  Scan029
Letter from HPG. Brakenridge & Co. discussing a potential meeting, which may no longer be necessary.10th Aug 1932Box 28 \ 2  Scan030
Letter discussing availability for service related to a trip to Derby.10th Aug 1932Box 28 \ 2  Scan031
Letter to Adamant Engineering Co. comparing their Marles steering system with Rolls-Royce's own, focusing on reversibility and road shock.10th Aug 1932Box 28 \ 2  Scan032
Letter to Mr. HPG. Brakenridge proposing a meeting to discuss production.11th Aug 1932Box 28 \ 2  Scan033
Letter from Adamant Engineering Company discussing the characteristics of Marles steering gear, specifically regarding road shocks and irreversibility.11th Aug 1932Box 28 \ 2  Scan034
Letter discussing steering gear ratios, roller bearings, and the Marles-Weller Steering Gear.11th Aug 1932Box 28 \ 2  Scan035
Continued letter discussing Marles and Marles-Weller steering gears and their application in various vehicles.11th Aug 1932Box 28 \ 2  Scan036
Letter from Adamant Engineering Company Limited concluding a proposal to supply sample gears for testing.11th Aug 1932Box 28 \ 2  Scan037
Letter to The Adamant Engineering Co. Ltd. discussing the merits and inefficiencies of American versus Marles steering systems.12th Aug 1932Box 28 \ 2  Scan038
Letter to Adamant Engineering requesting performance figures and a cost for Marles-Weller steering gears.15th Aug 1932Box 28 \ 2  Scan039
Letter from Adamant Engineering Company acknowledging receipt of a letter and promising a full reply.15th Aug 1932Box 28 \ 2  Scan040
Letter from Adamant Engineering discussing the design and characteristics of steering gears, particularly road reaction and self-centring.17th Aug 1932Box 28 \ 2  Scan041
Letter discussing the complexities of steering design, comparing Marles Steering to others, and noting its performance.17th Aug 1932Box 28 \ 2  Scan042
Letter from Adamant Engineering Company Limited detailing prices for different steering gear models.17th Aug 1932Box 28 \ 2  Scan043
Letter to Adamant Engineering Co. Ltd. requesting efficiency figures for a Marles Weller type steering box.18th Aug 1932Box 28 \ 2  Scan044
Letter from Adamant Engineering Company regarding tests conducted on steering gears.30th Aug 1932Box 28 \ 2  Scan045
Letter from Adamant Engineering Company Limited discussing gear efficiency testing procedures and the supply of custom cams.30th Aug 1932Box 28 \ 2  Scan046
Letter from Adamant Engineering Company containing a table of test results for steering gears.30th Aug 1932Box 28 \ 2  Scan047
Graph of steering and castoring efficiency for a Marles-Weller Type O Standard gear.30th Aug 1932Box 28 \ 2  Scan048
Blueprint detailing an impact test for a steering gear component.25th May 1927Box 28 \ 2  Scan049
Letter to Adamant Engineering Co. Ltd. discussing steering gear comparisons with General Motors and requesting test results.9th Sep 1932Box 28 \ 2  Scan050
Letter to The Adamant Engineering Co. about testing a Marles steering gear against their own steering column.13th Sep 1932Box 28 \ 2  Scan051
Letter from Adamant Engineering Company regarding the supply of Marles-Weller steering gears and a request for drawings.13th Sep 1932Box 28 \ 2  Scan052
Points requiring attention when adapting a Marles steering box to a 'C' type chassis.23th Sep 1932Box 28 \ 2  Scan053
Letter to Adamant Engineering Co. about fitting a steering box to a Phantom car.24th Sep 1932Box 28 \ 2  Scan054
Letter from Adamant Engineering Co. discussing steering box compatibility issues.24th Sep 1932Box 28 \ 2  Scan055
The concluding page of a letter addressed to Adamant Engineering Co.27th Sep 1932Box 28 \ 2  Scan056
Letter from Adamant Engineering Company regarding the difficulty of fitting a standard Marles Steering gear and arranging a meeting to resolve it.27th Sep 1932Box 28 \ 2  Scan057
Blueprint for a right-hand cam with 3 1/4 turns.26th Aug 1930Box 28 \ 2  Scan058
Blueprint drawing for a Rocker Shaft.10th Dec 1924Box 28 \ 2  Scan059
Blueprint drawing for a Cam.8th Dec 1926Box 28 \ 2  Scan060
Technical drawing of a Rocker Shaft R7 Type RH.30th Jun 1930Box 28 \ 2  Scan061
Letter from Adamant Engineering Company regarding the supply and design modifications for a Marles steering gear.1st Oct 1932Box 28 \ 2  Scan062
Letter from Adamant Engineering discussing gear design proposals, required dimensions, a potential fouling issue, and enclosed blueprints.1st Oct 1932Box 28 \ 2  Scan063
Graph showing curves for helix angles, pitch, and gear ratio for Marles-Weller gears.1st Mar 1932Box 28 \ 2  Scan064
Graph showing gear ratios for O and Q Marles-Weller gears at various rocker shaft positions.5th May 1934Box 28 \ 2  Scan065
Feasibility of fitting a Marles steering system to a Phantom II car.3rd Oct 1932Box 28 \ 2  Scan066
Requesting drawing MGA.20100 with marked dimensions for a D-type steering column on car 58-GN.3rd Oct 1932Box 28 \ 2  Scan067
Feasibility and proposed modifications for fitting a Marles steering box to a Phantom II car.3rd Oct 1932Box 28 \ 2  Scan068
Request for drawing MGA.20100 with dimensions for the steering column on car 58-GN.4th Oct 1932Box 28 \ 2  Scan069
Letter to The Adamant Engineering Co. Ltd. discussing the suitability of a steering box, carburetter foul, and steering tube dimensions.4th Oct 1932Box 28 \ 2  Scan070
Page 2 of a letter to The Adamant Engineering Co. Ltd. regarding a central steering tube, steering box, and print MGA.20100.5th Oct 1932Box 28 \ 2  Scan071
Letter from Adamant Engineering Company regarding steering gear modifications and specifications.5th Oct 1932Box 28 \ 2  Scan072
Letter from Adamant Engineering Company Limited regarding an enclosed drawing and gear manufacture.5th Oct 1932Box 28 \ 2  Scan073
The fitting of a Marles Weller steering system to SG's car.6th Oct 1932Box 28 \ 2  Scan074
Letter to Adamant Engineering Co Ltd regarding a comparison of Cadillac and Marles Weller steering gear wear.10th Oct 1932Box 28 \ 2  Scan075
Letter from Adamant Engineering Company discussing Cadillac steering and the adjustment of Marles-Weller steering gears.12th Oct 1932Box 28 \ 2  Scan076
Letter from Adamant Engineering Company Limited discussing wear on gears and ball races.12th Oct 1932Box 28 \ 2  Scan077


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