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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Modifications to a car's springing and shock-absorbers following criticisms during the Weymann London Trials.8th Apr 1932Box 107 \ 1  scan0097
Responding to queries about shock damper and spring modifications for Chassis No. GSR-14, the Weymann London Trials Car.9th Apr 1932Box 107 \ 1  scan0098
Requesting a set of low rating springs and discussing the modification of shock absorbers for chassis GSR-14.11th Apr 1932Box 107 \ 1  scan0099
Letter to a customer apologising for a delay and detailing car repairs and planned future work.2nd Apr 1932Box 107 \ 1  scan0100
Preparation and dispatch of new front and rear springs for Chassis GSP-14.12th Apr 1932Box 107 \ 1  scan0101
Testing of new Synchro Mesh Gears on engine GLN-60 and the recording of tappet clearances.16th Apr 1932Box 107 \ 1  scan0102
The replacement of car 20-G-4 to prepare it for demonstration work.21th Apr 1932Box 107 \ 1  scan0103
Follow-up request for a reply regarding car reference 20-G-4.26th Apr 1932Box 107 \ 1  scan0104
From Hs. to Cx. advising it will take a week to prepare a car for sales demonstration upon its return.26th Apr 1932Box 107 \ 1  scan0105
Quoting feedback on the poor lighting of the Smith Instrument Patch for the 20/25 model.4th May 1932Box 107 \ 1  scan0106
Old synchro-mesh gearbox on car 19-G4 and the process of engaging first speed.5th May 1932Box 107 \ 1  scan0107
Confirming information about the synchro mesh gearbox on model 19-G-4.6th May 1932Box 107 \ 1  scan0108
Arrangement and use of demonstration cars and a replacement vehicle.10th May 1932Box 107 \ 1  scan0109
Unsuitability of car 16-G4 and the planned modification of car 20-G4 for use as a Trials car.11th May 1932Box 107 \ 1  scan0110
Front spring buffer clearances and potential modifications for a demonstration car.24th May 1932Box 107 \ 1  scan0111
Note specifying that four passengers were in the car when its camber measurements were taken.25th May 1932Box 107 \ 1  scan0112
Modification to prevent the side steering tube from hitting the shock absorber.26th May 1932Box 107 \ 1  scan0113
Customer's (Mr. Hopps) critical feedback on the acceleration of the 20-G4 car compared to the 25 HP model.14th Jun 1932Box 107 \ 1  scan0114
Letter from a customer comparing a new 25 HP car with their current model and cancelling their order for the new type.12th Jun 1932Box 107 \ 1  scan0115
Page two of a letter from Bernard Hopps giving feedback on his car's engine performance.16th Jun 1932Box 107 \ 1  scan0116
Performance of the 25 HP car and the need for comparative testing.16th Jun 1932Box 107 \ 1  scan0117
Performance comparison between a 20.G.IV model and Mr. Bernard Hopps' car, analysing the impact of weight and axle ratio.15th Jun 1932Box 107 \ 1  scan0118
Vehicle performance, speedometer accuracy, and comparing the wheel torque of U series and R series cars.15th Jun 1932Box 107 \ 1  scan0119
Performance comparison between R and U series engines for the 25 HP cars, showing improved torque and power curves.1st Nov 1931Box 107 \ 1  scan0120
Thank you letter regarding a reply to Mr. Hopps' criticisms and mentioning a demonstration car.17th Jun 1932Box 107 \ 1  scan0121
Proposal to standardise new resonance exhaust silencers on 25 HP cars and arrange for testing.27th Jun 1932Box 107 \ 1  scan0122
Short typed memo concerning Resonance Exhaust Silencers and the availability of GBT-24.30th Jun 1932Box 107 \ 1  scan0123
The fitting of a resonance exhaust silencer to car GBT-24 in Derby.5th Jul 1932Box 107 \ 1  scan0124
Instructions to remove an experimental silencer from car GBT-24, and the decision not to fit a resonance silencer on GBT-9.13th Jul 1932Box 107 \ 1  scan0125
Inquiry regarding the suspension springs and shock absorber settings for car models 20-G4 and GAU-64, particularly for use on French roads.22th Jul 1932Box 107 \ 1  scan0126
Recommendation on springs and shock absorber settings for Continental touring.25th Jul 1932Box 107 \ 1  scan0127
Cover letter from A.F. Sidgreaves forwarding an encouraging letter from an agent, Mr. Douglas Croall.25th Jul 1932Box 107 \ 1  scan0128
Letter of appreciation from Mr. R. Douglass Croall regarding a new demonstration car's performance and synchromesh.21th Jul 1932Box 107 \ 1  scan0129
Opinion on the synchro-mesh gearbox for the 20/25 model.8th Aug 1932Box 107 \ 1  scan0130
Copy of a letter from Mr. W.W. Constantine praising the new synchro-mesh gearbox.5th Aug 1932Box 107 \ 1  scan0131
Performance and wear report on a car after extensive mileage, detailing the status of its engine and various components.18th Aug 1932Box 107 \ 1  scan0132
List of identified faults with vehicle components such as the petrol gauge, water pump, clutch, fan, and transmission.18th Aug 1932Box 107 \ 1  scan0133
Attaching a list of lap speeds and flying half-mile times recorded at Brooklands.18th Aug 1932Box 107 \ 1  scan0134
Brooklands test results comparing performance with different fuels, tyres, and carburetter setups.16th Aug 1932Box 107 \ 1  scan0135
Acceleration test results comparing a 'Present Jet' with a 'Jet supplied by S.U.'.16th Aug 1932Box 107 \ 1  scan0136
List of modifications to be carried out on car G.L.N.60.22th Aug 1932Box 107 \ 1  scan0137
Instructions for setting split piston type dampers for G.L.N.60.22th Aug 1932Box 107 \ 1  scan0138
Identifying Mr. W.W. Constantine, the British technical representative of General Motors, regarding a Synchromesh agreement.29th Aug 1932Box 107 \ 1  scan0139
Letter to Mr. Clark of Bendix-Perrot Brakes regarding Mr. Bendix's request to use a car during his visit to England.6th Sep 1932Box 107 \ 1  scan0140
Multiple faults with a car, including the servo fabric, a fuel stoppage, and radiator shutter issues.15th Sep 1932Box 107 \ 1  scan0141
Issues with a car's rear-spring control and windscreen wipers following a road test to Scotland.15th Sep 1932Box 107 \ 1  scan0142
Unsatisfactory servo fabric and thermostat control on a 25 HP car, suggesting a replacement spring similar to the Phantom II.15th Sep 1932Box 107 \ 1  scan0143
Tappet clearance measurements and an over-run issue for car GLN-60.26th Sep 1932Box 107 \ 1  scan0144
Vincent Bendix's upcoming visit to London and a proposal to let him test drive a 25 HP car.6th Oct 1932Box 107 \ 1  scan0145
Letter from Bendix-Perrot Brakes Ltd. acknowledging a request regarding the use of a car for Mr. Bendix's visit.8th Oct 1932Box 107 \ 1  scan0146
Letter to Bendix-Perrot Brakes Ltd, advising that a copy of another letter has been sent to Mr. Clark.18th Oct 1932Box 107 \ 1  scan0147
Letter to Mr. H. Clark arranging a meeting at the Motor Show.17th Oct 1932Box 107 \ 1  scan0148
List of work instructions for car GLN.60.24th Oct 1932Box 107 \ 1  scan0149
Requesting to change spark plugs, grease the car, fill shock absorbers and road test for knocks.24th Oct 1932Box 107 \ 1  scan0150
Test report on a second-hand 25 HP car, GMU-27, detailing unsatisfactory braking, power issues, and disintegrated servo-lining.28th Oct 1932Box 107 \ 1  scan0151
Bonnet damage on a Hooper Trials 25 HP car and a proposed fix.8th Nov 1932Box 107 \ 1  scan0152
Fitting new thermostat springs to 'Phantom II' and 25 HP trials cars.16th Nov 1932Box 107 \ 1  scan0153
The suitability of thermostat springs from Phantom II trials cars for use in the 25 HP car.17th Nov 1932Box 107 \ 1  scan0154
High line appearing on the bonnet panels of a 25HP car during trials, and potential solutions.18th Nov 1932Box 107 \ 1  scan0155
Bonnet paintwork discolouration, weighing the options of fitting contact discs versus the resulting damage.18th Nov 1932Box 107 \ 1  scan0156
Requesting two further thermostat springs for cars GAU-14 and GKT-22.18th Nov 1932Box 107 \ 1  scan0157
Required work on a car's exhaust system and brakes.23th Nov 1932Box 107 \ 1  scan0158
Frictional loading of the 20/25HP Slipper Flywheel and its effects on vibration and engine gear rattle.23th Nov 1932Box 107 \ 1  scan0159
Requesting a proper reply to questions raised in a previous correspondence regarding a trials car.23th Nov 1932Box 107 \ 1  scan0160
Engine vibration issues and potential solutions for the GAU-7 Trials Car.30th Nov 1932Box 107 \ 1  scan0161
Expected reaction to the removal of springs from a slipper-wheel on trials car GAU-7.1st Dec 1932Box 107 \ 1  scan0162
Faults and arrangements for the GAU-7 car during its London Trials.4th Jan 1933Box 107 \ 1  scan0163
Car's inspection, brakes, performance, and arranging further work.21th Feb 1933Box 107 \ 1  scan0164
Follow-up request for information regarding Chassis GAU-48, a Park Ward Trials Car.21th Feb 1933Box 107 \ 1  scan0165
Chassis No. GAU-48, the Park Ward Trials Car, and an inquiry about a batch of 142 cars.20th Feb 1933Box 107 \ 1  scan0166
Potential cause of loose split pins being the introduction of the synchro-mesh gearbox.23th Feb 1933Box 107 \ 1  scan0167
Request to fit a Bentley head, induction pipe, and carburetters to car GLN.60.22th May 1933Box 107 \ 1  scan0168
Requesting the fitting of a non-trepanned cylinder head and carburettors to car GLN.60.22th May 1933Box 107 \ 1  scan0169
Oil getting on the servo linings causing defective brakes and requesting a modification.24th May 1933Box 107 \ 1  scan0170
Persistent vibration and noise issue in a London Trials Saloon car, rendering it useless for demonstration work.7th Jun 1933Box 107 \ 1  scan0171
Complaint about a half speed crankshaft period on a London Trials Saloon car.8th Jun 1933Box 107 \ 1  scan0172
Resolution of a periodic vibration issue on the London Trials Saloon GRW-32.1st Jun 1933Box 107 \ 1  scan0173
Resolution of a periodic vibration issue in a car and requesting a detailed explanation of the fix.9th Jun 1933Box 107 \ 1  scan0174
Replacement of a C.13 unit with a C.10 unit in the first Bentley car (GLN-60) and further testing.10th Jun 1933Box 107 \ 1  scan0175
Confirming a conversation with reference to disposing of a car.13th Jun 1933Box 107 \ 1  scan0176
Inquiring about the amount of petrol put into vehicle GLN-60.29th Jun 1933Box 107 \ 1  scan0177
Data sheet recording acceleration times and speeds over two separate test runs.6th Jul 1933Box 107 \ 1  scan0178
Results of car performance trials and identified mechanical issues.1st Nov 1933Box 107 \ 1  scan0179
Typed note discussing a plan for fitting a new axle and the availability of a car.1st Nov 1931Box 107 \ 1  scan0180
Responding to remarks about a 'retard drive groan' on a 25 HP trials car and advising that lap speeds are unavailable.1st Nov 1931Box 107 \ 1  scan0181
Comparative tests at Brooklands and addressing issues of exhaust spitting and retard drive groan.2nd Nov 1933Box 107 \ 1  scan0182
Proposing comparative tests for an improved carburetter on a 25 HP car.7th Nov 1935Box 107 \ 1  scan0183
The feasibility of fitting a relay clutch device and controllable shock dampers to a car with an outdated specification.7th Nov 1933Box 107 \ 1  scan0184
That drawing 20-G-4 is outdated for fitting controllable shock dampers and a new carburettor, and arranging for a new clutch device to be sent to Cricklewood.8th Nov 1933Box 107 \ 1  scan0185
Clutch performance of car GLN-60 after 3,000 miles.13th Nov 1933Box 107 \ 1  scan0186
The clutch performance for car GLN-60 after 3,000 miles of use.13th Nov 1933Box 107 \ 1  scan0187
Requesting the preparation of parts for a vacuum-assisted clutch modification on a 20/25 model.24th Nov 1933Box 107 \ 1  scan0188
Inquiring about the readiness of parts for a power-assisted clutch conversion.24th Nov 1933Box 107 \ 1  scan0189
Confirmation of a telegram and instructions for car maintenance work on chassis 20-G-IV.28th Nov 1933Box 107 \ 1  scan0190
Engine mounting modifications, a gearbox replacement, and leaking shock dampers for car GLN-60.30th Nov 1933Box 107 \ 1  scan0191
Requesting the urgent completion of a high compression Bentley cylinder head, which is currently awaiting valves.1st Dec 1933Box 107 \ 1  scan0192
Requesting an uncleaned unit from car GLN.60 be stripped for examination after running 10,000 miles on T.E.L.2nd Dec 1933Box 107 \ 1  scan0193
Upgrades and the accelerated testing plan for the GUB-5 chassis.13th Dec 1933Box 107 \ 1  scan0194
Troubleshooting and replacement instructions for a failing S.U. petrol pump on vehicle GIN.60.16th Dec 1933Box 107 \ 1  scan0195
Incorrect petrol pump and proposing to use the present one until a correct replacement arrives from Skinner.18th Dec 1933Box 107 \ 1  scan0196


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