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
List of factors that do not appear to affect tyre noise.7th Oct 1935Box 30 \ 5  Scan151
Investigations into tyre noise on a Phantom III car using cast iron drums.8th Nov 1935Box 30 \ 5  Scan152
Letter from the India Tyre & Rubber Company Ltd. regarding a confidential enclosure.8th Nov 1935Box 30 \ 5  Scan153
Comparison document detailing the circumference and performance metrics of India Super and Speed Special tyres.11th Nov 1935Box 30 \ 5  Scan154
Letter to The Earl of Rothes at The India Tyre & Rubber Co. arranging a meeting about a tyre noise complaint.13th Nov 1935Box 30 \ 5  Scan155
Super India Tyres for a Bentley Trials Car chassis.19th Nov 1935Box 30 \ 5  Scan156
Letter from India Tyre & Rubber Co. arranging a meeting, discussing a steel body for the Phantom III chassis and Bentley tyres.20th Nov 1935Box 30 \ 5  Scan157
Letter from Park Ward & Co. Ltd. to The Earl of Rothes discussing the construction of a steel body on a Rolls-Royce chassis.18th Nov 1935Box 30 \ 5  Scan158
The use of Swiss alloy for car bodies, challenges with Bentley chassis, and cooperation between coachbuilders.18th Nov 1935Box 30 \ 5  Scan159
The final page of a letter from Park Ward & Co.22th Nov 1935Box 30 \ 5  Scan160
Responding to queries about India 'Super' Tyres with findings and measurements.22th Nov 1935Box 30 \ 5  Scan161
Letter to The Earl of Rothes arranging a meeting and lunch for Friday the 29th to discuss the body situation.25th Nov 1935Box 30 \ 5  Scan162
Letter from India Tyre & Rubber Company Ltd. confirming a lunch meeting in Derby.26th Nov 1935Box 30 \ 5  Scan163
Letter from the India Tyre & Rubber Company Ltd. concerning the dispatch of various trial tyre sets, including Aero Cushion tyres.2nd Dec 1935Box 30 \ 5  Scan164
Order for 5 Aero Cushion 6-ply Tyres from India Tyre & Rubber Co. Ltd.3rd Dec 1935Box 30 \ 5  Scan165
Letter from India Tyre & Rubber Company discussing tyre suitability, sizes, and potential trials.3rd Dec 1935Box 30 \ 5  Scan166
Inter-departmental memo discussing various tyre options, weights, and tests for a Bentley.2nd Dec 1935Box 30 \ 5  Scan167
Table of tyre specifications listing cross-section, outer diameter, effective radius, and weight.5th Dec 1935Box 30 \ 5  Scan168
Letter concerning the dispatch of four part-worn 7.00-18 INDIA Super covers and Black Tubes from a Phantom-Three chassis.5th Dec 1935Box 30 \ 5  Scan169
Requesting an order to be passed to the India Tyre & Rubber Co. for four Super Covers & Tubes.6th Dec 1935Box 30 \ 5  Scan170
Letter to The India Tyre & Rubber Co. Ltd. concerning the weight of a Dunlop Bentley Wheel.6th Dec 1935Box 30 \ 5  Scan171
Specification sheet detailing the weights of various tyres and wheels.20th Dec 1935Box 30 \ 5  Scan172
Explaining how a weight difference in a wheel assembly is accounted for by balancing weights.9th Dec 1935Box 30 \ 5  Scan173
Letter from India Tyre & Rubber Company regarding the weight of Bentley wheels.9th Dec 1935Box 30 \ 5  Scan174
Tyres sent to the Test Department for use on a Phantom III testing chassis.11th Dec 1935Box 30 \ 5  Scan175
List of various tyres and tubes sent to the Test Department for evaluation.11th Dec 1935Box 30 \ 5  Scan176
The supply of tyres from the India Tyre Company for a 20/25 HP model.16th Dec 1935Box 30 \ 5  Scan177
Investigations into tyre noise on the Phantom III model, detailing various experiments.18th Dec 1935Box 30 \ 5  Scan178
Car noise when driving over setts, comparing tyre types and proposing tests with rubber body mountings.19th Dec 1935Box 30 \ 5  Scan179
Responding to a query about the supply of India tyres for the 20/25 HP model.19th Dec 1935Box 30 \ 5  Scan180
Letter to The Earl of Rothes at The India Tyre & Rubber Co. Ltd. confirming the weight of a 16' wheel.21th Dec 1935Box 30 \ 5  Scan181
Invoice for experimental tyres and tubes, with queries about their prior use on demonstration cars.24th Dec 1935Box 30 \ 5  Scan182
Letter to The Earl of Rothes at The India Tyre & Rubber Co. Ltd. regarding the unwrapped condition of received tyres.30th Dec 1935Box 30 \ 5  Scan183
Enquiry from the India Tyre & Rubber Company regarding potential damage to a tyre fitted to a Bentley.23th Dec 1935Box 30 \ 5  Scan184
Letter from India Tyre & Rubber Co. regarding a set of wheels for testing and tyre wear on the 4¼ litre Bentley.8th Jan 1937Box 30 \ 5  Scan185
Page two of a letter from India Tyre & Rubber Co. to W.A. Robotham discussing car stability.8th Jan 1937Box 30 \ 5  Scan186
Despatch of 5 Bentley 4x17 wheels to The India Tyre Co.Ltd., Scotland.13th Jan 1937Box 30 \ 5  Scan187
Letter to The India Tyre & Rubber Co., Ltd. regarding the despatch of Bentley wheels for Mr. Summer's car.13th Jan 1937Box 30 \ 5  Scan188
Non-corrosive treatments like Cadmium plating and anodic treatment for various metal parts.1st Nov 1927Box 30 \ 6  Scan001
Experiments with various treatments, including anodic, cadmium, and lead plating, to prevent aluminium screw threads from seizing.9th Dec 1927Box 30 \ 6  Scan002
Laboratory report on tests to determine the effectiveness of low-temperature heat-treatment in cadmium plating.17th Dec 1927Box 30 \ 6  Scan003
On an Inspector's Report form discussing the 'Economy Fetish' of 10,000 miles versus real-world road tests.7th Dec 1927Box 30 \ 6  Scan004
Brittleness of springs caused by cadmium plating and suggesting heat treatment as a solution.29th Dec 1927Box 30 \ 6  Scan005
Properties and testing of chromium-plated road springs.31th Dec 1927Box 30 \ 6  Scan006
The benefits of plating road springs to improve suspension, prolong life, and reduce squeaking.2nd Jan 1928Box 30 \ 6  Scan007
Plating of springs, including issues with brittleness and the advantages of American spring lubrication methods.2nd Jan 1928Box 30 \ 6  Scan008
Arguing against the proposal for plating road springs due to the risk of brittleness in the steel.3rd Jan 1928Box 30 \ 6  Scan009
Suitability of different parts for testing chromium plating, specifically rejecting valve springs and questioning the use of road springs.1st Jan 1928Box 30 \ 6  Scan010
Clarifying the reasoning for testing the plating process on valve springs before applying it to road springs.6th Jan 1928Box 30 \ 6  Scan011
Proposal for experiments in chromium plating specific engine and vehicle components.9th Jan 1928Box 30 \ 6  Scan012
Potential improvements for 40/50 HP water pumps, focusing on the friction drive and glands.9th Jan 1928Box 30 \ 6  Scan013
Page two of a memo discussing the results of a device test and suggesting material improvements.10th Jan 1928Box 30 \ 6  Scan014
Implementation of Chromium and Cadmium Plating, addressing perceived delays.10th Jan 1928Box 30 \ 6  Scan015
Recommending cadmium plating for steel control parts and supercharger diffuser rings on aero engines to prevent rusting.11th Jan 1928Box 30 \ 6  Scan016
Determining the necessity of dimensional allowances for cadmium plating on control parts and diffuser vanes.13th Jan 1928Box 30 \ 6  Scan017
Proposal for testing chromium-plated springs for hydrogen brittleness and comparative results.13th Mar 1928Box 30 \ 6  Scan018
Standardisation of a Cadmium plated and stove-enamelled external finish for aero engines.14th Mar 1928Box 30 \ 6  Scan019
Application of centralised chassis lubrication for the India 3 model, including battery suspension and brake gear.17th Mar 1923Box 30 \ 6  Scan020
Meeting with Mr. Einstein regarding his electro-chemical deposition metalising process.3rd Apr 1928Box 30 \ 6  Scan021
Mr. Einstein's proposal for a metalizing factory and a suggestion for a trial order on a cylinder water jacket.1st Apr 1928Box 30 \ 6  Scan022
Test results for a chromium-plated water pump spindle, noting an improvement over the Staybright spindle.27th Apr 1928Box 30 \ 6  Scan023
Request to prepare and cadmium plate standard front road springs for a bump test.1st May 1928Box 30 \ 6  Scan024
Copy of a telegram suggesting to chromium plate the bore of a blade rod.8th Jun 1928Box 30 \ 6  Scan025
Testing cadmium-plated road springs, detailing wear patterns, life expectancy, and recommendations for further trials.26th Jun 1928Box 30 \ 6  Scan026
Request for cadmium plating of front and rear road springs with specified unloaded camber details.29th Jun 1928Box 30 \ 6  Scan027
Instructions regarding the cadmium plating of a car's springs at the Works.4th Jul 1928Box 30 \ 6  Scan028
Test report on a centralised lubrication scheme, noting a cracked pipe and the performance of a cadmium-plated road spring.7th Jul 1928Box 30 \ 6  Scan029
Potential improvements to vehicle riding qualities, covering tyres, springs, and shock dampers.23th Jul 1928Box 30 \ 6  Scan030
The correct road springs for the 17-EX experimental car, including specifications and sourcing instructions.24th Jul 1928Box 30 \ 6  Scan031
Request to have the new type rear springs cadmium plated before they are fitted.24th Aug 1928Box 30 \ 6  Scan032
New scheme for rear springs, requesting a standard pair be cadmium plated instead of using a special type.27th Aug 1928Box 30 \ 6  Scan033
Requesting the inspection of cadmium-plated front springs for testing purposes.1st Sep 1928Box 30 \ 6  Scan034
Clarifying the experimental status of cadmium plating for springing and requesting its availability for standard production.22th Sep 1928Box 30 \ 6  Scan035
Non-standardisation and issues with cadmium plating on springs.24th Sep 1928Box 30 \ 6  Scan036
Requesting the cadmium plating and re-fitting of 1600 lbs. rear springs for the 10-EX car.25th Sep 1923Box 30 \ 6  Scan037
Proposal to chromium plate an experimental car to gain practical experience with the finish and to test an external supplier.27th Sep 1928Box 30 \ 6  Scan038
Clarifying a point about the standard specification of cadmium-plated springs.24th Sep 1928Box 30 \ 6  Scan039
Query regarding instructions for cadmium plating special road springs on chassis GKM-33.28th Sep 1928Box 30 \ 6  Scan040
Suggestion to use chromium plating on a new car, recommending the 'India-4' model.28th Sep 1928Box 30 \ 6  Scan041
The use of chromium plating on one of two new car models being built.28th Sep 1928Box 30 \ 6  Scan042
Letter to Solex Ltd. arranging a visit to their Paris laboratory and discussing carburetter and crankshaft design.29th Sep 1928Box 30 \ 6  Scan043
The unauthorized cadmium plating of springs on chassis GKM-33 and the halt of this practice pending standardization.2nd Oct 1928Box 30 \ 6  Scan044
Recommendation for cadmium plating on Phantom chassis parts based on long-term testing.1st Oct 1928Box 30 \ 6  Scan045
Parts list for the Water Pump Drive and Governor assembly of an engine unit.1st Oct 1928Box 30 \ 6  Scan046
Parts list for an ignition distributor, clutch, and slipper wheels & spring drive.1st Oct 1928Box 30 \ 6  Scan047
Parts list for the complete servo linkage assembly.1st Oct 1928Box 30 \ 6  Scan048
Parts list for the servo shaft, fittings, and associated pedals.1st Oct 1928Box 30 \ 6  Scan049
List of drawing numbers and part names for front and rear brakes, with additional notes on other vehicle components.8th Oct 1928Box 30 \ 6  Scan050
Standardisation of cadmium plating and the bedding of leaves for road springs.8th Oct 1928Box 30 \ 6  Scan051
The availability and application of chromium plating for exterior car fittings, including the radiator.10th Oct 1928Box 30 \ 6  Scan052
Suggesting modifications to a lightened clutch, flywheel and serrated universal joint to improve lubrication.10th Oct 1928Box 30 \ 6  Scan053
Provision of a chromium-plated radiator to allow for the fitting of other chromium-plated parts.17th Oct 1928Box 30 \ 6  Scan054
Instructions for chromium plating parts for 'SS' cars.17th Oct 1928Box 30 \ 6  Scan055
Issues with chromium plating and recommending to continue with nickel plating as the standard finish.18th Oct 1928Box 30 \ 6  Scan056
Arranging for an experimental 20 HP car to have its nickel parts chromium plated.19th Oct 1928Box 30 \ 6  Scan057
Process and requirements for chromium plating on nickel silver for various car parts.20th Oct 1928Box 30 \ 6  Scan058
Difficulties and commercial viability of chromium plating on chassis.30th Oct 1928Box 30 \ 6  Scan059
Investigation into mysterious breakages of cadmium plated screws, identifying hydrogen embrittlement as the cause and proposing heat treatment as a remedy.9th Nov 1928Box 30 \ 6  Scan060
From 'ROY' discussing an offer from Harcourts Ltd for experimental chrome plating on components like crankshafts.21th Nov 1928Box 30 \ 6  Scan061
Instruction prohibiting the sandblasting of pipes, particularly copper pipes, as a method of cleaning.21th Nov 1928Box 30 \ 6  Scan062


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