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 388 of 2367        Sort by   Box   Date   Description

Filter      from        to             identifier   [all]
DescriptionDateIdentifier
Comparison of chromium plating with nitrogen hardening, discussing issues of hardness, adherence, and cracking.22th Nov 1928Box 30 \ 6  Scan063
Methods to improve spring lubrication on the 'SS' model going to France.11th Dec 1928Box 30 \ 6  Scan064
Micro-examination and mechanical test report on cadmium-plated small screwed parts.13th Dec 1928Box 30 \ 6  Scan065
Test results and analysis of cadmium plating on test pieces, focusing on fracture angles and potential causes of failure.14th Dec 1928Box 30 \ 6  Scan066
Cadmium plating inducing brittleness in small screwed parts and proposing a special heat treatment.14th Dec 1928Box 30 \ 6  Scan067
Failures and further testing related to cadmium plating on small screwed parts.17th Dec 1928Box 30 \ 6  Scan068
Material embrittlement during the cadmium plating process and the necessity of post-plating heat treatment.19th Dec 1928Box 30 \ 6  Scan069
The re-testing of cadmium plated small screwed parts to determine the angle of breakdown and check for embrittlement.20th Dec 1928Box 30 \ 6  Scan070
Micro-examination report on failed cadmium plated small screwed parts, detailing chemical composition and hardness.18th Jan 1929Box 30 \ 6  Scan071
Photomicrograph showing the microstructure of a material at 300x magnification.29th Nov 1928Box 30 \ 6  Scan072
Instructions for fitting new front and rear springs to car 23-EX, with specified loadings and treatment procedures.23th Apr 1929Box 30 \ 6  Scan073
Covering memo discussing correspondence and replies regarding a report on radiator chrome plating.23th Apr 1929Box 30 \ 6  Scan074
Chassis alteration no. 3 regarding radiator chrome plating, comparing cost, appearance, and weight of different radiator constructions.10th Apr 1929Box 30 \ 6  Scan075
Advantages of loose-shell construction and the market demand for automatic shutters and chromium plating.26th Apr 1929Box 30 \ 6  Scan076
Chassis alteration no. 8 dealing with radiator chrome plating.26th Apr 1929Box 30 \ 6  Scan077
Urgent internal memo requesting various sets of leaf springs to be cadmium plated and grooved for several cars.29th May 1929Box 30 \ 6  Scan078
Letter received from the Chrome Process Syndicate Ltd. about chromo-plating samples.18th Sep 1929Box 30 \ 6  Scan079
Letter from Chromo Process Syndicate Ltd. offering to chromium plate samples free of charge for testing.14th Aug 1929Box 30 \ 6  Scan080
Cancelling instructions for chromium plating 'T' Section parts for a 20-HP chassis.4th Nov 1929Box 30 \ 6  Scan081
Appearance of chromium plating compared to Staybrite steel.4th Nov 1929Box 30 \ 6  Scan082
Report discussing material and plating changes for parts, including trials on brass and Staybrite for bonnet hinges.14th Nov 1929Box 30 \ 6  Scan083
Instructions for the experimental building of 20 HP and 40/50 HP chassis with modified chromium and Staybrite finishes.5th Nov 1929Box 30 \ 6  Scan084
Standardisation, cost, and quality of chromium plating for radiators, chassis and other fittings.11th Nov 1929Box 30 \ 6  Scan085
Decision on an alternative for chromium plating, fitting it to external parts only, leaving interior parts with a nickel silver finish.13th Nov 1929Box 30 \ 6  Scan086
Investigation into a new chromium plating process and its proposed standardisation for external car parts.14th Nov 1929Box 30 \ 6  Scan087
Instruction to change from close plating to a new electro-plating process for Phantom II & 20/25 HP chassis parts for a 10,000-mile test.17th Feb 1930Box 30 \ 6  Scan088
Extract from Mr. Platford's report on the Spanish Grand Prix, concerning issues with front engine guards.17th Sep 1914Box 30 \ 6  Scan089
Requesting approval for an immediate alteration to the Front Engine Guard, as detailed in Proposal Sheet No. 24.10th Nov 1928Box 30 \ 6  Scan090
Proposal letter for a new front engine guard design to address cracking issues.30th Oct 1923Box 30 \ 6  Scan091
Complaints of mud and water penetrating the side engine guards on the 20-HP model.9th Dec 1926Box 30 \ 6  Scan092
Letter from Melbourne complaining about mud ingress into the engine bay of New Phantom and 20 HP cars.10th Oct 1928Box 30 \ 6  Scan093
The effectiveness of Phantom engine guards in preventing mud ingress, comparing driving conditions in France and Australia.12th Nov 1928Box 30 \ 6  Scan094
Performance of Phantom engine guards and potential improvements for different road conditions.15th Nov 1928Box 30 \ 6  Scan095
Modifications to the Peregrine engine side guards and a new sump design.18th Nov 1932Box 30 \ 6  Scan096
Design considerations for Peregrine Undersheets and proposing a trial set.8th Mar 1933Box 30 \ 6  Scan097
Modification to the Peregrine engine's undersheets.3rd May 1933Box 30 \ 6  Scan098
Progress memo regarding design issues with the 3.5 litre Bentley, specifically the Undersheet.3rd May 1933Box 30 \ 6  Scan099
Sending the complete design for Bensport engine and gearbox undersheets and suggesting a trial set be made.4th May 1933Box 30 \ 6  Scan100
Modifications and production of Bentley undershields for a test chassis.22th Jun 1933Box 30 \ 6  Scan101
Confirming a proposal to manufacture the Bentley Side Lever Guard in aluminium, with a modification to prevent material crushing.26th Jun 1933Box 30 \ 6  Scan102
Comparison of brake performance for Continental Touring versus standard use.16th Jul 1914Box 30 \ 6  Scan103
Instructions regarding brake performance issues, including wheel lock-up and rubbing, observed during trials in Austria.16th Jul 1914Box 30 \ 6  Scan104
Standardisation of oil retaining baffles in rear axle tubes to prevent leakage onto the rear brakes.6th May 1920Box 30 \ 6  Scan105
Distributing standardisation sheets for several experiments.27th May 1920Box 30 \ 6  Scan106
Standardisation of a modified lubrication system for rear brake actuating shafts.8th Oct 1931Box 30 \ 6  Scan107
Form for the standardization of chassis parts, detailing the cost of jigs and tools.27th Nov 1923Box 30 \ 6  Scan108
Ergonomic positioning and dimensions of the side brake lever.6th Jul 1921Box 30 \ 6  Scan109
Sending the print G.2902 for the X.3458 rear hub and double brake.19th May 1919Box 30 \ 6  Scan110
Telegram confirmation from Royce to Hives regarding an experiment on how to keep oil off brakes.3rd Apr 1919Box 30 \ 6  Scan111
Potential for experimenting with front brakes and analyzing existing brake system performance.8th Aug 1921Box 30 \ 6  Scan112
Tyre pressures, braking performance, and a comparison with other vehicle braking systems.4th Aug 1921Box 30 \ 6  Scan113
Defects of a current brake system and considering the implementation of front wheel brakes.11th Feb 1920Box 30 \ 6  Scan114
Front-wheel braking and the acquisition of competitor cars like Hispano, Ballot and Duesenberg for analysis.4th Aug 1921Box 30 \ 6  Scan115
From Mr. Royce detailing urgent torsion and fracture tests for the front axle system on the 40/50 HP chassis.28th Oct 1921Box 30 \ 6  Scan116
Suitability of Perrot and Hotchkiss front wheel brake systems.11th Nov 1921Box 30 \ 6  Scan117
Suitability of Perrot and Hotchkiss front wheel brake systems.3rd Nov 1921Box 30 \ 6  Scan118
Arguing that the importance of front wheel brakes has been over-estimated compared to other design priorities.9th Nov 1921Box 30 \ 6  Scan119
Delays with the application of front wheel brakes, the 'Swallow' project, and proposed schemes for a servo system.22th Nov 1921Box 30 \ 6  Scan120
Technical description of a proposed compressed air-assisted braking system.22th Nov 1921Box 30 \ 6  Scan121
Servo drum and free wheel designs for a braking system, and progress on the 'Swallow' and 'Goshawk 11' chassis.19th Sep 1927Box 30 \ 6  Scan122
Inter-office letter discussing the problems and reasons against implementing four-wheel brakes.21th Dec 1921Box 30 \ 6  Scan123
Letter arguing against certain brake designs, citing issues with Hotchkiss drive and steering in winter conditions.14th Dec 1922Box 30 \ 6  Scan124
New arrangement for side change levers and a servo-assisted gearbox for front wheel brakes.14th Dec 1922Box 30 \ 6  Scan125
Advising on the adoption of left-hand steering and four-wheel brakes for American cars.7th Dec 1922Box 30 \ 6  Scan126
Recent serious car accidents involving rival makes, particularly along the road to Nice.9th Mar 1923Box 30 \ 6  Scan127
Policy on front wheel brakes in response to a report from Mr. Hives.23th Oct 1923Box 30 \ 6  Scan128
Front wheel brakes, discussing the cause of 'jaggers' and proposing modifications to the brake action, springs, and dampers.3rd Oct 1923Box 30 \ 6  Scan129
Improvements and concerns for vehicle braking and steering systems.1st Nov 1923Box 30 \ 6  Scan130
Report by a motoring correspondent on speed and stopping distance tests for four-wheel brakes fitted to a Bentley car.1st Nov 1923Box 30 \ 6  Scan131
Table comparing servo torque multiplication data for the 40/50, 20/25, and Peregrine models.8th Nov 1933Box 30 \ 6  Scan132
Request for detailed braking specifications of an 8-cylinder Isotta-Fraschini car for comparison purposes.8th Nov 1923Box 30 \ 6  Scan133
Development and issues of a semi-servo brake system, particularly concerning stiff front springs and a proposed torque member solution.21th Nov 1923Box 30 \ 6  Scan134
Proposed modifications for a four-wheel brake and suspension system.22th Nov 1923Box 30 \ 6  Scan135
How to measure pull to identify unnecessary friction in the four-wheel brake mechanism.27th Nov 1923Box 30 \ 6  Scan136
Proposal for experimental alterations to the four-wheel braking system.27th Nov 1923Box 30 \ 6  Scan137
Modifications to the braking system, specifically regarding 'servo' action and shoe design.28th Nov 1923Box 30 \ 6  Scan138
Brake performance testing parameters and proposed shoe designs.28th Nov 1923Box 30 \ 6  Scan139
From DA to HS about the delay in four-wheel brake designs pending experimental results.1st Dec 1923Box 30 \ 6  Scan140
Scheme for taking up clearance in rear brakes by rotating the servo with foot pressure.12th Jul 1923Box 30 \ 6  Scan141
Braking systems, detailing issues with pedal pressure and proposing an alternative servo scheme.1st Jan 1924Box 30 \ 6  Scan142
Servo efficiency and brake pressure modifications to achieve more equal braking.11th Jan 1924Box 30 \ 6  Scan143
The causes and elimination of brake jaggers.12th Jul 1923Box 30 \ 6  Scan144
Modifications and tests to diagnose braking and steering issues, specifically 'jaggers'.1st Jan 1924Box 30 \ 6  Scan145
Front brake effectiveness, steering faults, and brake rig testing.12th Jul 1923Box 30 \ 6  Scan146
Issues with steering pivot pins and riveted brake dust covers, and plans for testing a car with new front springs and servo.11th Jan 1924Box 30 \ 6  Scan147
Diagram showing the arrangement of Hispano four-wheel brakes.1st Jan 1924Box 30 \ 6  Scan148
Schematic diagram of the standard arrangement for four-wheel brakes on a 40-50 model, including modifications.1st Jan 1924Box 30 \ 6  Scan149
Calculation of the effective pressure on the rear brakes for the Standard 40-50 RR and Goshawk models.15th Jan 1924Box 30 \ 6  Scan150
Comparing the performance of different brake lining materials, specifically Halo and Ferodo, under hot and cold conditions.15th Jan 1924Box 30 \ 6  Scan151
Experimental progress report on a 40/50 car's 4-wheel brakes during a road test.17th Jan 1924Box 30 \ 6  Scan152
Front brake effectiveness, oil contamination, servo modifications, and chunking in the brake mechanism.7th Jan 1924Box 30 \ 6  Scan153
Customer complaints regarding brake noise and analysis of a proposed servo modification.17th Jan 1924Box 30 \ 6  Scan154
Tests on brake pressure distribution, servo operation, and the effects of unequal braking.17th Jan 1924Box 30 \ 6  Scan155
The effect of front braking on steering for a 40/50 chassis.17th Jan 1924Box 30 \ 6  Scan156
Visit to Chapel-en-le-Frith concerning brake friction materials and squeaking linings.12th Jul 1923Box 30 \ 6  Scan157
Clutch wear and the friction co-efficient of Ferodo lining.17th Jan 1924Box 30 \ 6  Scan158
Continued note on servo lining wear, attributing excessive wear to lack of cooling facilities.18th Nov 1924Box 30 \ 6  Scan159
Diagram of an E.A.C. Servo with three graphs showing its mechanical gain performance under varying conditions.18th Nov 1924Box 30 \ 6  Scan160
Tests investigating unequal braking, its effect on steering, and the equalization of braking force.12th Jul 1923Box 30 \ 6  Scan161
Servo brake testing, comparing the wear on Ferodo and cast iron liners.23th Jan 1924Box 30 \ 6  Scan162


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