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
Design alteration for the rear anchorage of the front spring to accommodate a drip plug for the centralised chassis lubrication system.17th May 1928Box 16 \ 7  Scan065
Sending a new spring damped pendulum lever and other design improvements for the SS. Phantom model.7th May 1928Box 16 \ 7  Scan066
Recommendations to improve the high-speed performance of the 40/50 suspension system.19th May 1928Box 16 \ 7  Scan067
Page of notes on supplementing damping with Hartfords and adjusting steering pivot lean.21th May 1928Box 16 \ 7  Scan068
Suspension spring deflection, buffer clearance, and camber for models EAC.7 and EAC.10.21th May 1928Box 16 \ 7  Scan069
Excessive rear wing clearance on the 14-EX car, creating a misleading appearance.23th May 1928Box 16 \ 7  Scan070
Frame heights for EAC.10 and questioning buffer clearances for springs.31th May 1928Box 16 \ 7  Scan071
Blueprint comparing the frame heights for three different 40/50 chassis models.31th May 1928Box 16 \ 7  Scan072
Print room stamp from the Derby facility.31th May 1928Box 16 \ 7  Scan073
The testing and performance of cadmium-plated road springs.26th Jun 1928Box 16 \ 7  Scan074
Laboratory report detailing the hardness test results for broken spring plates.4th Jul 1928Box 16 \ 7  Scan075
Typed internal memo providing feedback and criticisms on various car models and their performance.9th Jul 1928Box 16 \ 7  Scan076
Riding qualities of the Phantom and 20 HP models, focusing on tyres and road springs.20th Jul 1928Box 16 \ 7  Scan077
Improving vehicle ride quality by adjusting flexible springs and hydraulic shock dampers.24th Jul 1928Box 16 \ 7  Scan078
The correct road spring specifications for the 17-EX car and sourcing logistics.24th Jul 1928Box 16 \ 7  Scan079
Recommendation for using 25% stiffer springs on heavily sprung cars for specific conditions.26th Jul 1928Box 16 \ 7  Scan080
Customer complaints and tests related to vehicle springing, specifically for the Phantom and 20 HP models.27th Jul 1928Box 16 \ 7  Scan081
Commenting on the design and manufacturing of road springs, comparing different types.14th Aug 1928Box 16 \ 7  Scan082
Comparing the quality and cost of Firth springs versus Lemoine and American springs.20th Aug 1928Box 16 \ 7  Scan083
Query about the arrival of stiffer rear road springs for the 12-EX and 17-EX models.20th Aug 1928Box 16 \ 7  Scan084
Concerns regarding a new design for 40/50 rear road springs and centrepoint lubrication.3rd Mar 1928Box 16 \ 7  Scan085
Requesting data on suspension buffer deflection during a 10,000-mile test of 20 HP and 40/50 HP models.23th Aug 1928Box 16 \ 7  Scan086
Test results for buffer penetration and wheel arch clearance for different tyre sizes.1st Aug 1928Box 16 \ 7  Scan087
New type rear springs be cadmium plated before fitting.8th Aug 1928Box 16 \ 7  Scan088
New scheme for rear spring lubrication, requesting a pair of standard springs to be cadmium plated.27th Aug 1928Box 16 \ 7  Scan089
Car springing guidelines and qualifications for various car models.27th Aug 1928Box 16 \ 7  Scan090
Continued page discussing front spring specifications and recommendations for different driving conditions.27th Aug 1928Box 16 \ 7  Scan091
Two graphs showing spring poundage against axle weight for 20 HP rear and front springs.30th Aug 1928Box 16 \ 7  Scan092
Blank document page marked with a 'Print Room' receiving stamp.30th Aug 1928Box 16 \ 7  Scan093
Spring chart for Phantom 'V' series to F2B, detailing spring poundage against front and rear axle weight.23th Aug 1928Box 16 \ 7  Scan094
Blank page with a 'Print Room' stamp from Derby.30th Aug 1928Box 16 \ 7  Scan095
Notice about altering the front axle inclination for the Phantom 'G2A' series chassis and onwards.28th Aug 1928Box 16 \ 7  Scan096
Request to inspect the plating on one cadmium-plated front spring and to measure the internal friction of another.5th Sep 1928Box 16 \ 7  Scan097
The buffer clearance for new 25% stiffer rear springs.6th Sep 1928Box 16 \ 7  Scan098
Specification sheet comparing front and rear road springs for 'Sports' and 'Chassis' models.6th Sep 1928Box 16 \ 7  Scan099
Buffer clearance specifications for different car springs and driving conditions.1st Sep 1928Box 16 \ 7  Scan100
The arrangement of the 'SS' front rubber buffer.12th Sep 1923Box 16 \ 7  Scan101
The provision of a sliding pad for Phantom rear springs.13th Sep 1928Box 16 \ 7  Scan102
Explaining discrepancies between two suspension tests for the 40/50 model.17th Sep 1928Box 16 \ 7  Scan103
Changes to the rear springs and fittings for the 12-EX & Phantom models under scheme H 2709.21th Sep 1928Box 16 \ 7  Scan104
Requesting confirmation that part N.sch.2709 is fitted to a 12-EX car to enable standard rear springs to be fitted.21th Sep 1928Box 16 \ 7  Scan105
Recommendation for ordering 1400, 1300 and 1200 lbs rear springs for the 18-EX model.24th Sep 1928Box 16 \ 7  Scan106
Instruction to fit 1500 lbs. 6-leaf 25% stiffer springs from car 12-EX to car 17-EX.25th Sep 1928Box 16 \ 7  Scan107
Request to cadmium plate and re-fit the 1600 lbs rear springs for the 10-EX car.25th Sep 1928Box 16 \ 7  Scan108
Recommendation to order 'SS' front road springs of 1050, 1100 and 1150 lbs.26th Sep 1928Box 16 \ 7  Scan109
Vehicle springing, ride comfort, weight distribution, and tyre selection for various car models.1st Oct 1928Box 16 \ 7  Scan110
Design of road spring plates, comparing square ends to pointed ends and cantilever to semi-elliptic springs.10th Feb 1928Box 16 \ 7  Scan111
Standardisation of cadmium plating on road springs and modifications for leaf bedding.1st Oct 1928Box 16 \ 7  Scan112
Requesting a 40/50 rear engine rubber mounting foot for testing and a change of front springs on the 8-EX car.17th Oct 1928Box 16 \ 7  Scan113
Impact of rear body length and weight distribution on car riding qualities.20th Oct 1928Box 16 \ 7  Scan114
Manufacturing process and design of road springs.20th Oct 1928Box 16 \ 7  Scan115
Recommending 1500 lbs. rear springs be made available for 'SS' bodies due to the addition of subframes.31th Oct 1928Box 16 \ 7  Scan116
Persistent squeaks from the front road springs and proposing design alterations.1st Dec 1928Box 16 \ 7  Scan117
Diagram illustrating the lubrication of a flexible cable spring.30th Nov 1928Box 16 \ 7  Scan118
Blueprint detailing the rear anchorage assembly for a front spring.30th Nov 1928Box 16 \ 7  Scan119
Internal memorandum confirming previous results on car springing.6th Dec 1928Box 16 \ 7  Scan120
Request to obtain 12 top plates for 'SS' front springs to replace broken ones from the bump rig.6th Dec 1928Box 16 \ 7  Scan121
Short internal memo confirming agreement with a report regarding springing.7th Dec 1928Box 16 \ 7  Scan122
Instruction to order 12 top plates for S.S. front springs to replace breakages occurring on the bumping rig.7th Dec 1928Box 16 \ 7  Scan123
Specifying the correct front and rear springs for models 14-G-1V and 19-EX, including a note on cadmium plating.10th Dec 1928Box 16 \ 7  Scan124
Order for 'SS' springs of various weights.10th Dec 1928Box 16 \ 7  Scan125
Potential improvements for the 'SS' model's spring lubrication system.11th Dec 1928Box 16 \ 7  Scan126
Technical memorandum discussing experiments and methods for improving the lubrication of 'SS' front springs.20th Dec 1928Box 16 \ 7  Scan127
Continued note on the beneficial effect of radius rod action on the spring during front brake application.13th Dec 1928Box 16 \ 7  Scan128
Confirming that the 'SS' spring lubrication will be the next job for the first chassis.13th Dec 1928Box 16 \ 7  Scan129
Length of the 'SS' chassis, comparing it to competitors and suggesting design improvements.26th Dec 1928Box 16 \ 7  Scan130
Chassis design, dimensions, and comparisons with the Phantom model.21th Dec 1928Box 16 \ 7  Scan131
Continued page of a typed letter or memorandum discussing a particular subject.1st Jan 1929Box 16 \ 7  Scan132
Explaining the difference in stress range and life between front and rear road springs.1st Jan 1929Box 16 \ 7  Scan133
The 'SS' bumper chassis testing on the bumping rig, discussing front spring life and new hydraulic shock dampers.1st Jan 1929Box 16 \ 7  Scan134
Analysis of failures during a 200-hour bumping rig test on an 'SS' chassis.1st Jan 1929Box 16 \ 7  Scan135
Test report logging the operational lives and failure times of various components like levers, shafts, and casings.1st Jan 1929Box 16 \ 7  Scan136
Testing of rear shock absorbers, including conditions and failures over time.1st Jan 1929Box 16 \ 7  Scan137
Log of spring testing, detailing life, running conditions, and failure points.11th Jan 1925Box 16 \ 7  Scan138
Drawing and failure analysis of a rear shock absorber piston which broke after 45 minutes of running.11th Jan 1925Box 16 \ 7  Scan139
Blueprint diagram of an Axle Control Damper Casing, noting a failure point from a test run.11th Jan 1928Box 16 \ 7  Scan140
Blueprint showing a fracture on a front spring clip after a timed test run.11th Jan 1929Box 16 \ 7  Scan141
Diagram showing the failure points of a bracket on a steering column after a timed run.11th Jan 1929Box 16 \ 7  Scan142
Specifying the standard poundages for 'SS' road springs and a special type for light cars.21th Jan 1929Box 16 \ 7  Scan143
Suggestion for a centralised spring lubrication system and recommending it be patented.23th Jan 1929Box 16 \ 7  Scan144
Specifying the required weight for 'SS' road springs for maximum type bodies.29th Jan 1929Box 16 \ 7  Scan145
Design of the rear spring front anchorage, referencing a drawing and questioning differences compared to front springs.1st Jan 1929Box 16 \ 7  Scan146
Testing procedures for lubricated road springs on the 20-EX model.30th Jan 1929Box 16 \ 7  Scan147
Blueprint diagram for a spring lubrication system.30th Jan 1929Box 16 \ 7  Scan148
Almost entirely illegible document featuring only a purple ink stamp.30th Jan 1929Box 16 \ 7  Scan149
Secret internal memorandum discussing issues with front spring anchorage, lubrication, and pendulum lever wear.30th Jan 1929Box 16 \ 7  Scan150
Communication discussing issues with pipe joints and suggestions for protecting overflow pipes from mud.25th Jan 1929Box 16 \ 7  Scan151
Internal memorandum regarding 'SS' Spring Lubrication experiments and instructing parts for a car going to France.1st Feb 1928Box 16 \ 7  Scan152
Lubrication test for 'SS' road springs, proposing a 10,000-mile trial on a vehicle.1st Feb 1929Box 16 \ 7  Scan153
The poundage specifications for J.2. Series road springs.6th Feb 1929Box 16 \ 7  Scan154
Modified allocation of S.S. springs to be sent to Messrs. Firths.8th Feb 1929Box 16 \ 7  Scan155
Table of weights for front and rear road springs for a Super-Sports model.19th Feb 1929Box 16 \ 7  Scan156
Elimination of special springing provisions for the Continent and Australia.19th Feb 1929Box 16 \ 7  Scan157
Springing poundages for the 'SS' and 20 HP models.22th Feb 1929Box 16 \ 7  Scan158
Modifications to the lubrication of spring gaiters on the Phantom model.2nd Mar 1929Box 16 \ 7  Scan159
Interpreting a telegram regarding feedback on a car's performance, detailing required modifications to springs, dampers, and other components.22th Mar 1929Box 16 \ 7  Scan160
Phantom road spring lubrication issues and a proposed solution using an Enots gun.26th Mar 1929Box 16 \ 7  Scan161
Manufacturing and supply of S.S. springs for the first 50 SS chassis.9th Apr 1929Box 16 \ 7  Scan162
The 'S.S' model's rear spring clip fouling the subframe and a proposed solution.9th Apr 1929Box 16 \ 7  Scan163
Lubrication system for road springs.9th Apr 1929Box 16 \ 7  Scan164


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