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
Decision to increase the rating of 'SS' springs by 10% due to them being too flexible.10th Apr 1929Box 16 \ 7  Scan165
Comparative stiffness, deflection, and rating of 'SS' springs versus the standard 40/50 HP springs.11th Apr 1929Box 16 \ 7  Scan166
Modified lubrication holes and grooves in road springs for the 'SS' Chassis to cure squeaking.15th Apr 1929Box 16 \ 7  Scan167
Modifications to road springs, focusing on drilling, grooving, and oiling methods.16th Apr 1929Box 16 \ 7  Scan168
Design and lubrication of road springs, proposing the use of extra flexible tips.17th Apr 1929Box 16 \ 7  Scan169
Requesting to fit specific front and rear springs to chassis 23-EX, detailing the required poundage after treatment.1st Apr 1929Box 16 \ 7  Scan170
Letter regarding new parts and suspension testing for the 22-EX experimental car.23th Apr 1929Box 16 \ 7  Scan171
Continuation of instructions for vehicle testing, detailing ballast, shock absorber, and steering settings.13th May 1929Box 16 \ 7  Scan172
Poundage modifications for axle springs on the J.2 Series Chassis.13th May 1929Box 16 \ 7  Scan173
Recommendation for S.S. road spring percentages and material for the next 50 sets.14th May 1929Box 16 \ 7  Scan174
Experiments with drilled valves in shock absorbers to improve riding quality and comparing a Chrysler to a Phantom.14th May 1929Box 16 \ 7  Scan175
Vehicle suspension and ride comfort, comparing different body types and weight distributions for driving on continental roads.14th May 1929Box 16 \ 7  Scan176
Suspension components, including road springs, gaiters, and shock absorbers, to improve ride comfort.14th May 1929Box 16 \ 7  Scan177
Shock absorber testing, detailing load settings and observations on ride quality.14th May 1929Box 16 \ 7  Scan178
Shock absorber loadings and drilled valves to achieve a good ride.29th May 1929Box 16 \ 7  Scan179
Urgent internal request for various car springs to be cadmium plated and grooved.29th May 1929Box 16 \ 7  Scan180
Letter from Rolls-Royce of America to Derby discussing riding quality, weight distribution, and spring oiling.31th May 1929Box 16 \ 7  Scan181
Letter to Mr. Robotham discussing the development of a Castor oil scraper ring, including a diagram.21th May 1929Box 16 \ 7  Scan182
List of springs fitted to experimental cars with corresponding complete car weights.1st Jun 1929Box 16 \ 7  Scan183
Request to prepare a bumper chassis for testing new improved spring grooving, a new exhaust system, engine mounting and frame cross members.18th Jun 1929Box 16 \ 7  Scan184
Suggestion memo regarding buffer clearances and specifications for fitting springs.1st Jun 1929Box 16 \ 7  Scan185
Recommending road spring loads for chassis nos. 1-WJ and 14-WJ, based on the weight of an 18-EX body.1st Jun 1929Box 16 \ 7  Scan186
Urgent request for two modified SS front springs with specific camber requirements for experimental work.28th Jun 1929Box 16 \ 7  Scan187
Cost and effectiveness of the current manufacturing method for road springs.23th Jul 1929Box 16 \ 7  Scan188
Instructions for providing a lubrication scheme on 40/50 HP Chassis 'J-2' Series road springs.26th Jul 1929Box 16 \ 7  Scan189
Production car modifications for S.S. Cars, covering road spring pillars, servo lining, thermostats, and exhaust fittings.26th Jul 1929Box 16 \ 7  Scan190
Recommended modifications for S.S. cars concerning steering and lubrication.8th Aug 1929Box 16 \ 7  Scan191
Secret internal memorandum regarding an urgent conference to discuss the manufacturing method of S.S. Springs and the need to cut expenses.8th Aug 1929Box 16 \ 7  Scan192
Converting experimental chassis road spring groovings to the production standard.20th Mar 1923Box 16 \ 7  Scan193
Proposal for using stiffer road springs on the Phantom II sports car.9th Oct 1939Box 16 \ 7  Scan194
Vehicle spring weights, durability, and potential weight savings.21th Oct 1929Box 16 \ 7  Scan195
Expenses for the Phantom II, specifically concerning Firth's prices and a £6,000 payment.21th Oct 1929Box 16 \ 7  Scan196
Road spring prices and manufacturing methods for the Phantom I and Phantom II.19th Oct 1929Box 16 \ 7  Scan197
Price increases and manufacturing specifications of springs for Phantom I and Phantom II cars.23th Oct 1929Box 16 \ 7  Scan198
The life and performance of road springs, comparing different designs and the impact of hydraulic shock absorbers.23th Oct 1929Box 16 \ 7  Scan199
Use of a hollow rolled plate and an 'exerciser' to improve spring bedding and reduce manufacturing costs.24th Oct 1929Box 16 \ 7  Scan200
The Phantom II sports car rear springs, discussing proposed changes and weight savings.24th Oct 1929Box 16 \ 7  Scan201
The differences between American and English car springing, discussing damping, spring plates, and potential future controllable systems.26th Oct 1929Box 16 \ 7  Scan202
The springing and shock absorber performance of the Phantom II chassis.18th Feb 1929Box 16 \ 7  Scan203
Chassis spring settings and recommending modifications.21th Nov 1929Box 16 \ 7  Scan204
The springing of the Phantom II chassis and arranging a follow-up meeting in Derby.21th Nov 1929Box 16 \ 7  Scan205
Springing and shock absorber setup for the Phantom II chassis based on extensive road tests.21th Nov 1929Box 16 \ 7  Scan206
Phantom II hydraulic shock absorbers, their loading limits, and a response to a customer complaint.21th Nov 1929Box 16 \ 7  Scan207
The cost, finish, and design of Phantom II road springs compared to the Phantom I.26th Nov 1929Box 16 \ 7  Scan208
Letter discussing the springing of the Phantom II chassis and proposing further tests to improve riding quality.28th Feb 1929Box 16 \ 7  Scan209
Cost reduction and manufacturing improvements for Phantom II springs with supplier Firth's.7th Dec 1929Box 16 \ 7  Scan210
Cover memo discussing an attached report on efforts to prevent breakages and reduce costs, with continued work involving Firth's.7th Dec 1929Box 16 \ 7  Scan211
Finish, manufacturing process, and failure analysis of Phantom II springs.8th Dec 1929Box 16 \ 7  Scan212
Design alternatives for the Phantom II rear springs and clips to reduce production costs.7th Dec 1929Box 16 \ 7  Scan213
Complaint about squeaky springs on a Phantom 11 car due to incorrect lubrication.7th Dec 1929Box 16 \ 7  Scan214
The springing on the Phantom II model, advising against unnecessary spring changes.14th Dec 1929Box 16 \ 7  Scan215
Complaint about Phantom II springing issues related to the lanoline treatment process after cadmium plating.17th Dec 1929Box 16 \ 7  Scan216
Improvements to the Phantom II's riding comfort, focusing on tyre pressure, spring bedding, and shock absorbers.1st Jan 1930Box 16 \ 7  Scan217
Internal order specifying dimensions for Phantom II front and rear road springs for chassis 23-EX.6th Jan 1930Box 16 \ 7  Scan218
Modification and testing of rear road springs for the 40/50 HP Phantom II chassis.14th Jan 1930Box 16 \ 7  Scan219
Review of Messrs. Firths' spring drawing, detailing required modifications for the rear spring.14th Jan 1930Box 16 \ 7  Scan220
Letter to a supplier regarding specifications for special experimental Phantom II rear springs.16th Jan 1930Box 16 \ 7  Scan221
Cover letter regarding a communication from a supplier about axle springs for Chassis 23-EX.22th Jan 1930Box 16 \ 7  Scan222
Proportions of axle springs for model 23-EX with Firth's spring designer.22th Jan 1930Box 16 \ 7  Scan223
Letter to a supplier regarding specifications and delivery of plate springs.23th Jan 1930Box 16 \ 7  Scan224
Confirming a settlement with Firth's for the supply of springs to be made to an attached drawing.28th Jan 1930Box 16 \ 7  Scan225
Substitution of a rolled eye for a solid eye on the Phantom II Rear Axle Spring to reduce costs.4th Feb 1930Box 16 \ 7  Scan226
Requesting instructions for the inter-leaved lubrication of Sports Car road springs made by Firth's.25th Feb 1930Box 16 \ 7  Scan227
Modifying front road springs by removing leaves for a test on the S.S. car.12th Mar 1930Box 16 \ 7  Scan228
Recommendation on the positioning of clips on rolled eye rear springs to ensure proper bedding.14th Mar 1930Box 16 \ 7  Scan229
Blueprint diagram for a rolled eye 40/50 rear spring with measurements.14th May 1930Box 16 \ 7  Scan230
Almost entirely illegible document bearing a 'Print Room' stamp from Derby.14th May 1930Box 16 \ 7  Scan231
Modifications to the road springs for the Phantom II Sports Car (23-EX).20th Mar 1930Box 16 \ 7  Scan232
Tests investigating radiator 'jellying' by adjusting front springs and shock absorbers on various chassis.27th Mar 1930Box 16 \ 7  Scan233
Report page discussing the effect of torque reaction dampers on radiator 'jelly'ing'.1st Apr 1930Box 16 \ 7  Scan234
Complaints regarding the springing on Phantom II cars, specifically issues with bumping on the rear buffers.1st Apr 1930Box 16 \ 7  Scan235
Log of complaints and fixes for weak rear springs on the Phantom 11 model.4th Apr 1930Box 16 \ 7  Scan236
Standardisation of Phantom II rear axle springs and ordering 40/50 HP springs from Messrs. Firth.4th Apr 1930Box 16 \ 7  Scan237
Substitution of a rolled eye for a solid eye on the Phantom II Rear Axle Spring to reduce costs.4th Feb 1930Box 16 \ 7  Scan238
Application of the Bijur lubrication system to a front axle, suggesting the retention of drip plugs.10th Apr 1930Box 16 \ 7  Scan239
Order request for a set of stiffer type road springs for experimental use on Major Segrave's car.12th Apr 1930Box 16 \ 7  Scan240
Suspension tests on the Phantom II, focusing on front spring stiffness to resolve 'jellying' and pitching issues.12th Apr 1930Box 16 \ 7  Scan241
Blueprint for the rear road springs of a Phantom II Sports Car (23-EX).24th Apr 1930Box 16 \ 7  Scan242
Series of recommendations on springs, damping, and tyre pressures for Phantom II and 25 HP models.4th May 1930Box 16 \ 7  Scan243
Advantages and disadvantages of stiffer springs for the Phantom 11 and 20 HP models.14th May 1930Box 16 \ 7  Scan244
Analysis of customer complaints regarding rear seat ride quality, specifically low speed dithering and pitching issues.14th May 1930Box 16 \ 7  Scan245
Vehicle suspension issues, discussing spring ratings, deflection complaints, and potential compromises.14th May 1930Box 16 \ 7  Scan246
Poor road holding at high speeds and potential improvements to front suspension.14th May 1930Box 16 \ 7  Scan247
Results of fitting new lower rated front and stronger rear springs to chassis 82-AL.5th May 1930Box 16 \ 7  Scan248
Letter discussing the spring performance and axle weights of a Phantom II vehicle on various road conditions.15th May 1930Box 16 \ 7  Scan249
Ongoing 'Springing Complaints' for the Phantom I and the newly introduced Phantom II models.15th May 1930Box 16 \ 7  Scan250
List of customer complaints regarding suspension issues on the Phantom II model.8th May 1930Box 16 \ 7  Scan251
List of past customer complaints regarding vehicle suspension and handling issues.15th May 1930Box 16 \ 7  Scan252
Suggestion for front springs with two ratings and its application to the Phantom II model.15th May 1930Box 16 \ 7  Scan253
Order specification for a pair of special low rating front springs for the Phantom II.19th May 1930Box 16 \ 7  Scan254
Two lists of complaints regarding vehicle springing.19th May 1930Box 16 \ 7  Scan255
List of customer complaints regarding Phantom II springing issues, specifically bumping on buffers.19th May 1930Box 16 \ 7  Scan256
Log of vehicle suspension issues and remedies for specific chassis.8th May 1930Box 16 \ 7  Scan257
Hard riding issue and the proposed solution of drilling HP valves in shock absorbers.8th May 1930Box 16 \ 7  Scan258
List of springing complaints and repairs for Phantom II chassis.17th May 1930Box 16 \ 7  Scan259
Springing specifications for the Phantom II, in response to a memo from the Paris Depot.21th May 1930Box 16 \ 7  Scan260
Urgent memo regarding an epidemic of weak springing on 25 HP and Phantom II chassis, with recommendations for fitting stronger springs.15th May 1930Box 16 \ 7  Scan261
Customer complaints regarding the riding qualities and springing of the Phantom II and 25 HP models.23th May 1930Box 16 \ 7  Scan262
Shock absorber and spring testing for vehicle ride comfort.23th May 1930Box 16 \ 7  Scan263
Valve usage on the Phantom II, chassis improvements, and ride comfort issues on the 20 HP model.23th May 1930Box 16 \ 7  Scan264


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