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
Fitting new lower rated front springs to chassis 82-AL to resolve springing complaints.5th May 1930Box 16 \ 4  Scan158
Proposed modification for drilling the Phantom II water pump spindle.16th May 1930Box 16 \ 4  Scan159
Tests conducted on front shock absorbers to investigate oil loss and emptying.18th May 1930Box 16 \ 4  Scan160
Oiling tests, lever issues, damper tests, and spring life improvements.19th Mar 1936Box 16 \ 4  Scan161
Proposal to modify the 20 HP shock absorber connecting links based on the successful Phantom II design.22th May 1930Box 16 \ 4  Scan162
Modifications to the central oiling system and shock dampers.19th May 1930Box 16 \ 4  Scan163
Use of auxiliary friction shock absorbers, comparing 'Hartford' and French 'Afa' models.22th May 1930Box 16 \ 4  Scan164
Customer springing complaints and riding qualities for the Phantom II and 25 HP models.23th May 1930Box 16 \ 4  Scan165
Shock absorber loading, damping, and ride comfort tests on various models.23th Feb 1930Box 16 \ 4  Scan166
Modifications for Phantom models and customer complaints regarding the 20 HP chassis.23th May 1930Box 16 \ 4  Scan167
List of customer complaints compiled by the Repair Dept. regarding vehicles bumping on their buffers, with suggestions for resolution.23th May 1930Box 16 \ 4  Scan168
List of vehicle ride and suspension issues and their proposed remedies.23th May 1930Box 16 \ 4  Scan169
List of numbered vehicle cases with notes on complaints and remedies, including spring replacements and swaying issues.14th Aug 1930Box 16 \ 4  Scan170
Idea for shock dampers using small air vessels and chasing a patent application.14th Aug 1930Box 16 \ 4  Scan171
Issues from three separate attempts at providing free movement in the centre shock absorber stroke.16th Jun 1930Box 16 \ 4  Scan172
The decision not to patent an air vessel for shock dampers following experimental trials.16th Jun 1930Box 16 \ 4  Scan173
Standardisation of chassis parts relating to increased rear shock damper loads.25th Apr 1930Box 16 \ 4  Scan174
Inspection report on 24-EX front shock absorbers after 10,000 miles, detailing settings, oil condition, and component wear.15th Aug 1930Box 16 \ 4  Scan175
Inspection report detailing the condition and wear measurements of various engine components.15th Aug 1930Box 16 \ 4  Scan176
Inspection report detailing the condition and measurements of dampers, shafts, bearings, links, and pistons.15th Aug 1930Box 16 \ 4  Scan177
Inspection report detailing the condition of an off-side damper and its components.16th Aug 1930Box 16 \ 4  Scan178
Recommending case hardening for shock damper levers based on successful test results.16th Aug 1930Box 16 \ 4  Scan179
Springing modifications made to a Phantom II car, chassis 58-GN.19th Sep 1930Box 16 \ 4  Scan180
Continuation of a letter regarding arrangements to collect a car from its owner.19th Sep 1930Box 16 \ 4  Scan181
Sir Robert Hadfield's car springing issues, recommending fitting Hartfords due to a top-heavy body.23th Sep 1930Box 16 \ 4  Scan182
Request to prepare two sets of standardised spring-loaded connecting links for a shock absorber.25th Sep 1930Box 16 \ 4  Scan183
Request to fit two springs, part number F.82412, to the rear connecting links of the bumper chassis.25th Sep 1930Box 16 \ 4  Scan184
Requesting the testing and fitting of weaker springs for a Phantom II damper.25th Sep 1930Box 16 \ 4  Scan185
Improvements to the pin bearings of hydraulic shock absorbers for 40/50 and 25 HP models.25th Sep 1930Box 16 \ 4  Scan186
Letter from Rolls-Royce of America to Rolls-Royce Ltd. in Derby discussing issues, costs, and improvements for shock absorbers.26th Sep 1930Box 16 \ 4  Scan187
Customer complaints regarding knocking shock absorbers and an evaluation of potential alternative suppliers.30th Jun 1930Box 16 \ 4  Scan188
Observations on competitor hydraulic instruments.27th Sep 1930Box 16 \ 4  Scan189
Outlining an assembly difficulty with a new, longer spring for the Phantom II shock damper connecting links.27th Sep 1930Box 16 \ 4  Scan190
Complaining about the harsh ride and appearance of a car after fitting new front springs.3rd Oct 1930Box 16 \ 4  Scan191
Communication regarding a customer's dissatisfaction with a suspension alteration and a proposal for further work.9th Oct 1930Box 16 \ 4  Scan192
Car test in Paris and the fitting of new front springs.10th Oct 1930Box 16 \ 4  Scan193
Road test report for car 58-GN, evaluating its stiff front springs and suggesting modifications.4th Oct 1930Box 16 \ 4  Scan194
Requesting an alteration to the oil level in hydraulic shock absorbers on experimental Phantom II cars.22th Oct 1930Box 16 \ 4  Scan195
Issues with front hydraulic damper pins and a recommended modification to the oil level.22th Oct 1930Box 16 \ 4  Scan196
Query regarding loose hydraulic shock absorbers on Phantom II cars and potential causes.23th Oct 1930Box 16 \ 4  Scan197
Loose shock absorbers, suggesting coachbuilders are the cause.24th Oct 1930Box 16 \ 4  Scan198
Investigation into hydraulic shock absorber complaints, specifically focusing on knocking issues and slack links.25th Oct 1930Box 16 \ 4  Scan199
Technical report on diagnosing causes of knocks and noises in Phantom II and 20 HP models.25th Oct 1930Box 16 \ 4  Scan200
Oil loss from dampers and other related faults.25th Oct 1930Box 16 \ 4  Scan201
Summary of damper and link issues, including oil leaks and audible knocks, with proposed design improvements.25th Oct 1930Box 16 \ 4  Scan202
Continued memo about investigating 'mysterious knockers' and shock damper arms, noting the difficulty of diagnosis without the customer's car.25th Oct 1930Box 16 \ 4  Scan203
Shock absorbers that were tampered with by having their caps left unscrewed.25th Oct 1930Box 16 \ 4  Scan204
Modifications to the front hydraulic shock damper and fixing bolts for the Phantom II & L.H. Phantom II chassis.25th Oct 1930Box 16 \ 4  Scan205
Handling of shock absorber maintenance complaints and the circulation of related correspondence.27th Oct 1930Box 16 \ 4  Scan206
Specifying the Hartford shock absorber loads for the short type chassis.1st Nov 1930Box 16 \ 4  Scan207
Quarterly complaints report regarding tests on radiators, fabric couplings, and shock absorber knocks.3rd Nov 1930Box 16 \ 4  Scan208
Instructing the addition of a breather hole and deletion of oil grooves on rear Phantom shock dampers for experimental cars.4th Nov 1930Box 16 \ 4  Scan209
Proposal to improve lubrication of the front shock damper's upper joint by redirecting escaping oil via a bent pipe from the air vent.1st Nov 1930Box 16 \ 4  Scan210
Increased requirements and challenges of designing effective shock dampers for modern cars.22th Nov 1930Box 16 \ 4  Scan211
Report discussing the performance, issues, and future redesign of shock dampers and related suspension components.22th Nov 1930Box 16 \ 4  Scan212
Postscript discussing issues with shock dampers, their connections, and central oiling systems.17th Nov 1930Box 16 \ 4  Scan213
Proposed scheme and testing for slings under the rear axle.17th Nov 1930Box 16 \ 4  Scan214
Rear shock dampers with a 10 inch lever as per N. scheme 3172.17th Nov 1930Box 16 \ 4  Scan215
Customer issues with shock absorbers in the USA, comparing R.R. and Delco types, and proposing further testing.18th Nov 1930Box 16 \ 4  Scan216
Modifications to front and rear hydraulic shock dampers on 20/25 HP & 40/50 HP chassis to reduce knocks.21th Nov 1930Box 16 \ 4  Scan217
Alterations to the rear and front damper high pressure valves and oil passages for the 20/25 HP chassis.21th Nov 1930Box 16 \ 4  Scan218
Proposed scheme for lubricating the front shock damper pin using oil from the air vent.24th Nov 1930Box 16 \ 4  Scan219
Car springing, discussing increased deflection settings to improve ride quality.27th Nov 1930Box 16 \ 4  Scan220
Letter to a Mr. Beaver explaining the design philosophy and history behind the springing of the Phantom II.1st Dec 1930Box 16 \ 4  Scan221
Vehicle springing, weight distribution, and shock absorber improvements for Phantom II.1st Dec 1930Box 16 \ 4  Scan222
Typed letter from F. H. Royce discussing the performance and design of shock dampers, comparing their own with the Lovejoy type.2nd Dec 1930Box 16 \ 4  Scan223
Alterations to the rear hydraulic shock dampers for the Phantom II chassis.2nd Dec 1930Box 16 \ 4  Scan224
Modifications to ball valves and the addition of a filter in hydraulic shock dampers for the 40/50 HP chassis.8th Dec 1930Box 16 \ 4  Scan225
Page two of an instruction memo detailing the completion of a job using standard parts.8th Dec 1930Box 16 \ 4  Scan226
Tests concerning the importance of replenishing valve size on high-pressure front shock absorbers.12th Dec 1930Box 16 \ 4  Scan227
Hydraulic shock damper design, its circular filter, and suitability for the 25HP and Phantom II models.24th Dec 1930Box 16 \ 4  Scan228
Investigation into the cause of knocking in hydraulic dampers on Phantom II & 20 HP models.3rd Jan 1931Box 16 \ 4  Scan229
The efficiency and characteristics of vehicle dampers, air vents, and levers.3rd Jan 1931Box 16 \ 4  Scan230
Analysis of damper pressure, valve efficiency, steering characteristics, and material considerations.3rd Jan 1931Box 16 \ 4  Scan231
Damper performance, quarterly complaints, and future development including testing of 'Delco' dampers.3rd Jan 1931Box 16 \ 4  Scan232
Series of indicator diagrams comparing performance under various component configurations and operating conditions.3rd Jan 1931Box 16 \ 4  Scan233
Blank document with a Print Room stamp in the bottom right corner.3rd Jan 1931Box 16 \ 4  Scan234
Series of performance graphs for Phantom II front dampers under various test conditions.5th Jan 1931Box 16 \ 4  Scan235
The reverse of a document showing a company 'received' date stamp.5th Jan 1931Box 16 \ 4  Scan236
Graph and diagrams from tests conducted on a 20 HP Rear Damper Lever.3rd Dec 1930Box 16 \ 4  Scan237
Blank document page with a purple ink stamp from the print room.3rd Jan 1931Box 16 \ 4  Scan238
Series of six graphs showing performance characteristics of Phantom II rear dampers under various test conditions.5th Jan 1931Box 16 \ 4  Scan239
Heavily faded technical drawing with a receiving stamp in the bottom left corner.5th Jan 1931Box 16 \ 4  Scan240
Sheet of performance graphs for Phantom II rear dampers under high pressure with various configurations.5th Jan 1931Box 16 \ 4  Scan241
Almost completely illegible typed document with a 'Print Room' date stamp from Derby.5th Jan 1931Box 16 \ 4  Scan242
Outlining requested modifications to Phantom II rear shock absorbers for testing.9th Jan 1931Box 16 \ 4  Scan243
Request to make modified parts for the Phantom II rear shock absorber to test Delco valves.12th Jan 1931Box 16 \ 4  Scan244
Modifying the air release hole in front shock damper filler tubes to prevent overfilling.14th Jan 1931Box 16 \ 4  Scan245
Issues with existing shock absorbers and proposing design modifications.6th Feb 1931Box 16 \ 4  Scan246
Issues and solutions for front shock absorbers on the Phantom II model, including proposals for a redesign.7th Feb 1931Box 16 \ 4  Scan247
Provisional shock damper load recommendations for cars being sent to Springfield, America.7th Feb 1931Box 16 \ 4  Scan248
Instructions regarding front and rear shock dampers for the L.H. Phantom II model.11th Feb 1931Box 16 \ 4  Scan249
Urgent memo about setting loads for endurance testing of improved Phantom II shock absorbers for American cars.11th Feb 1931Box 16 \ 4  Scan250
Proposed spring-loaded piston for P.2 rear shock dampers and the potential use of P.2 dampers on the 25HP model.16th Feb 1931Box 16 \ 4  Scan251
Completion of a spring loaded piston for shock dampers and inquiring about production.18th Feb 1931Box 16 \ 4  Scan252
Changes to shock damper loads for L.H. (Left-Hand) Phantom II cars for the U.S.A.21th Feb 1931Box 16 \ 4  Scan253
Working loose of the Phantom II rear shock damper ball end anchorage.23th Feb 1931Box 16 \ 4  Scan254
Two schemes for increasing the stiffness of P.E. Shock Dampers.23th Feb 1931Box 16 \ 4  Scan255
Technical memo discussing issues with shock dampers and suspension springs, and an initial review of competing Delco-Lovejoy dampers.23th Feb 1931Box 16 \ 4  Scan256
Dimensions and construction of levers, shafts, and dampers.25th Feb 1931Box 16 \ 4  Scan257


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