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
Description of the function of a damper within the brake mechanism.15th Oct 1929Box 16 \ 3  Scan078
Cover note for an attached print concerning the clanking of a brake mechanism.15th Oct 1929Box 16 \ 3  Scan079
Depot sheet detailing the standardisation of moulded asbestos brake linings for the Phantom II to reduce squeaking.2nd Jan 1930Box 16 \ 3  Scan080
Issues with Ferobestos brake linings on the Phantom II, recommending a switch to Ferodo Bonded Asbestos for the rear brakes.6th Feb 1930Box 16 \ 3  Scan081
Seventh report of the Design Committee, discussing the hot well pump and modifications to the steering column.14th Feb 1930Box 16 \ 3  Scan082
On a Phantom II brake servo failure due to disintegrating friction material.19th Mar 1930Box 16 \ 3  Scan083
Material choices and fixing methods for clutches, referencing issues on the Phantom I and a 20-HP experimental car.19th Mar 1930Box 16 \ 3  Scan084
Phantom II brake servo failure, suggesting an increase in the dimension under the rivet head for the lining.20th Mar 1930Box 16 \ 3  Scan085
Service bulletin addressing the issue of servo squeaks, its cause, and the prescribed remedy.21th Mar 1930Box 16 \ 3  Scan086
Internal order request for Phantom II and 20 HP servo linings.5th Apr 1930Box 16 \ 3  Scan087
Use of staples versus rivets for fixing Cotton-Duck servo linings on a 20 HP chassis.22th May 1930Box 16 \ 3  Scan088
Standardisation report on securing servo fabric with staples and adding a damper to stop servo clank.12th Jun 1930Box 16 \ 3  Scan089
Inconsistent friction load on a suspension bracket servo, caused by oil and paraffin contamination of the lining, with a proposed solution.10th Sep 1930Box 16 \ 3  Scan090
Request to mill a groove in the outer pressure plate of the servo for the 24-EX model.17th Dec 1930Box 16 \ 3  Scan091
The swapping of servo friction plates between two experimental chassis, 19-EX and 22-EX.10th Mar 1931Box 16 \ 3  Scan092
Standardization of ball bearing cams for the Servo on 40/50 HP and 25 HP models.20th Oct 1931Box 16 \ 3  Scan093
Purchase and payment for two flying suits and two pairs of gloves.16th Nov 1931Box 16 \ 3  Scan094
Query regarding the standardisation of cam face angles for Phantom II foot brakes.17th Nov 1931Box 16 \ 3  Scan095
Standardisation of servo operating levers and ball bearing cams for the chassis.26th Sep 1931Box 16 \ 3  Scan096
Introduction of a new part to a chassis series, including cost implications.1st Feb 1916Box 16 \ 3  Scan097
Brake servo failures on the Phantom II due to bearing wear and proposing a new ball bearing design.25th May 1932Box 16 \ 3  Scan098
Page 2 of a memorandum discussing lubrication supply issues with a needle roller bearing and requesting feedback on a modification.25th May 1932Box 16 \ 3  Scan099
Trial and comparison of different materials for servo linings.9th Sep 1932Box 16 \ 3  Scan100
Design, materials, and challenges of servo-assisted braking systems.14th Sep 1932Box 16 \ 3  Scan101
Investigation into the failure of servo fabrics at the Cricklewood depot.20th Sep 1932Box 16 \ 3  Scan102
New servo lining sample, Ferodo RAD.13, and recommendations for its implementation.10th Oct 1932Box 16 \ 3  Scan103
Servo efficiency issues found during the dismantling of a servo on Chassis N.141.13th Oct 1932Box 16 \ 3  Scan104
Previously designed servo system and related patent considerations.7th Nov 1932Box 16 \ 3  Scan105
Standardisation of a new type of servo lining for 20/25 & 40/50 chassis parts.10th Oct 1932Box 16 \ 3  Scan106
Standardisation form for chassis parts detailing new part fitment and associated costs.16th Nov 1932Box 16 \ 3  Scan107
Three design suggestions for a forward-only servo mechanism.16th Nov 1932Box 16 \ 3  Scan108
Modifications to servo fabrics and linings for Ferodo.22th Nov 1932Box 16 \ 3  Scan109
Recommendation to adopt a .010' diametral clearance on all servo driving pins following a 10,000-mile test.25th Jan 1933Box 16 \ 3  Scan110
Standardisation of the Servo Motor Centre Ball Bearing on the Servo Bridge.5th Oct 1932Box 16 \ 3  Scan111
Standardisation form for a new chassis part.30th Sep 1936Box 16 \ 3  Scan112
Requesting the issue of details for a 40/50 servo.16th Oct 1933Box 16 \ 3  Scan113
Suggesting a change to the 40/50HP servo shaft lubrication scheme to a hand lubricator.14th Feb 1934Box 16 \ 3  Scan114
Standardisation of parts report for a fully floating servo.28th May 1934Box 16 \ 3  Scan115
Estimated cost for extra jigs, tools, and equipment for the 'T' series chassis.18th May 1934Box 16 \ 3  Scan116
Experimental department report on a ball bearing for a brake system servo motor.19th Dec 1934Box 16 \ 3  Scan117
Experiments comparing a special bearing with an ordinary ball bearing in servo motors.19th Dec 1934Box 16 \ 3  Scan118
Graph comparing the hysteresis of special and ordinary ball bearings supporting the inner pressure plate of a Bentley & 25 HP servo.19th Dec 1934Box 16 \ 3  Scan119
Stamped page from the Print Room in Derby.19th Dec 1934Box 16 \ 3  Scan120
Conclusions on fitting hydraulic shock dampers to a Phantom rear axle.4th Apr 1926Box 16 \ 4  Scan001
Fixing 20 HP shock dampers and an objection regarding petrol pipe routing.10th Apr 1926Box 16 \ 4  Scan002
Investigation and design for fitting hydraulic shock dampers to chassis 7-EX and EAC.V111.21th Apr 1926Box 16 \ 4  Scan003
Modified arrangement for rear hydraulic shock dampers involving a longer connecting rod.26th Apr 1926Box 16 \ 4  Scan004
Explaining an issue with hydraulic dampers caused by a drilling jig made from the wrong drawing.5th May 1926Box 16 \ 4  Scan005
Sending hydraulic shock dampers to France for testing with different oils and adjusted settings.28th Jun 1926Box 16 \ 4  Scan006
Modifications to the front axle forging and brake gear as per N.Scheme 2230.10th Jul 1926Box 16 \ 4  Scan007
Modifications for fitting hydraulic shock dampers on the rear of the EAC-7 chassis.23th Jul 1926Box 16 \ 4  Scan008
Modifications to the front shock damper, including shortening the operating lever and reducing the rubber buffer volume.1st Sep 1926Box 16 \ 4  Scan009
New settings for front shock dampers and suggesting modifications to the air vent and breather.15th Sep 1926Box 16 \ 4  Scan010
Standardisation of front hydraulic shock dampers to prevent high speed wobbles.23th Sep 1926Box 16 \ 4  Scan011
Cost difference for the standardisation of front hydraulic shock dampers.4th Oct 1926Box 16 \ 4  Scan012
Standardisation of rear hydraulic shock dampers.1st Oct 1926Box 16 \ 4  Scan013
The trial of hydraulic shock dampers, detailing their performance disadvantages and manufacturing difficulties.1st Dec 1926Box 16 \ 4  Scan014
Modifications to rear shock dampers due to insufficient ground clearance on car EAC.7.22th Dec 1926Box 16 \ 4  Scan015
Trial of aluminium washers in place of fibre on shock absorbers.8th Jan 1927Box 16 \ 4  Scan016
New production program for rear hydraulic shock dampers and a proposal to test a modification for lever bearing wear.9th Mar 1927Box 16 \ 4  Scan017
The testing and modification of shock absorbers to a gravity feed scheme.16th Mar 1927Box 16 \ 4  Scan018
The mounting of hydraulic shock dampers on the rear axle of a 20 HP vehicle.14th Apr 1927Box 16 \ 4  Scan019
Instruction to alter the setting of the front hydraulic dampers on car 12-EX.13th May 1927Box 16 \ 4  Scan020
Request to fit altered rear shock absorbers to cars 12-EX and 14-EX.25th Oct 1927Box 16 \ 4  Scan021
Correct fitting of the rear shock damper stone shield to protect the lubricating pipe.15th Apr 1928Box 16 \ 4  Scan022
Letter from Rolls-Royce of America acknowledging receipt of information regarding shock absorbers on sports cars.24th May 1928Box 16 \ 4  Scan023
Modifications to the 'SS' front axle control and shock damper to resolve issues with the engine feet.19th Jun 1928Box 16 \ 4  Scan024
Graph plotting shock absorber valve leakage rates for various valve configurations.22th Jun 1928Box 16 \ 4  Scan025
Alternative arrangements for the 'SS' model rear shock damper.14th Jul 1928Box 16 \ 4  Scan026
Design of 'SS' shock damper connecting rods.8th Jul 1928Box 16 \ 4  Scan027
The central lubrication for the 'SS' rear damper connecting rod and the potential intermingling of oils.9th Jul 1928Box 16 \ 4  Scan028
Making the filling plugs on 20 HP & 40/50 HP shock absorbers more accessible.23th Oct 1928Box 16 \ 4  Scan029
Instruction to replace worn parts and adjust the load on the rear shock absorbers for vehicle 14-EX.28th Nov 1928Box 16 \ 4  Scan030
Failures of the front axle control damper levers and main lever key-way during bumper testing.11th Nov 1928Box 16 \ 4  Scan031
Hand-drawn blueprint sketch of a mechanical component with annotations.19th Nov 1928Box 16 \ 4  Scan032
Date stamp from the Derby archives on the reverse of a document.19th Nov 1928Box 16 \ 4  Scan033
Blueprint diagram illustrating a fracture on a lever for an axle control damper.19th Nov 1928Box 16 \ 4  Scan034
The reverse side of a document with a 'Print Room' stamp.19th Nov 1928Box 16 \ 4  Scan035
Fitting shock absorbers and a damper pendulum lever to the 14-EX car.16th Nov 1928Box 16 \ 4  Scan036
Requesting the deletion of an air vent from the low pressure cap of an 'SS' Axle Control Damper.17th Nov 1928Box 16 \ 4  Scan037
The method for adjusting 'SS' shock damper springs, proposing the use of washers for load adjustments.17th Nov 1928Box 16 \ 4  Scan038
Use of different thickness washers to adjust valve spring loads to eliminate high-speed wobbles.17th Nov 1928Box 16 \ 4  Scan039
Continuation page discussing the behaviour of pressure valves and mentioning forthcoming tests on dynamic restrictions.17th Nov 1928Box 16 \ 4  Scan040
Graph plotting load versus deflection for spring FS4807 under high and low pressure conditions.17th Nov 1928Box 16 \ 4  Scan041
Stamp from the Print Room in Derby.17th Nov 1928Box 16 \ 4  Scan042
Schematic drawing showing two cross-sectional views of a mechanical component.17th Nov 1928Box 16 \ 4  Scan043
Blank document page marked with a 'Print Room' stamp from Derby.17th Nov 1928Box 16 \ 4  Scan044
Test results for the 'SS' Axle Control Damper, specifically regarding the air vent design.17th Nov 1928Box 16 \ 4  Scan045
Design of the 'SS' Axle Control Damper, focusing on air vents and pressure valves to prevent air pocketing.21th Nov 1928Box 16 \ 4  Scan046
Modification to the 'SS' Axle Control Damper to prevent trapped air.24th Nov 1928Box 16 \ 4  Scan047
Instructions for fitting the 'SS' axle control arm and connecting it to the front shock absorber.1st Dec 1928Box 16 \ 4  Scan048
Strengthened lever for the 'SS' front shock damper following a fracture.7th Dec 1928Box 16 \ 4  Scan049
The need for a hole in the 'SS' undershield for maintenance access.10th Dec 1928Box 16 \ 4  Scan050
Requesting the delivery of fractured shock damper components for examination.8th Jan 1929Box 16 \ 4  Scan051
Fracture of an 'SS' shock damper shaft, proposing a strengthened design, and questioning component loading.1st Jan 1929Box 16 \ 4  Scan052
Modifications to strengthen the 'SS' shock damper outer casing following fractures.1st Jan 1929Box 16 \ 4  Scan053
Proposed modification to the 'SS' rear shock damper piston.16th Jan 1929Box 16 \ 4  Scan054
Schemes for friction heads and front shock dampers, including an analysis of failure causes.17th Jan 1929Box 16 \ 4  Scan055
Modifications to 'SS' Front Shock Dampers.19th Jan 1929Box 16 \ 4  Scan056
Modifications and schematics for the 'SS' rear shock damper to overcome defects.19th Jan 1929Box 16 \ 4  Scan057


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