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
Delays in releasing nuts for the rocker cover and the petrol pipe line.5th Nov 1938Box 108 \ 2  scan0171
Instructions for the Wraith 'C' Series regarding carburetter drain pipes and the starting handle bracket.8th Nov 1938Box 108 \ 2  scan0172
Delays in the release of parts for the Wraith Chassis 'C' Series.14th Nov 1938Box 108 \ 2  scan0173
Release date for Exhaust System and Water Pump sections.31th Dec 1938Box 108 \ 2  scan0174
The issuance status of outstanding sections for the Wraith 'C' Series, particularly the Propeller Shaft.17th Nov 1938Box 108 \ 2  scan0175
Material release schedule and outstanding items for the Wraith 'C' Series production.24th Nov 1938Box 108 \ 2  scan0176
Material and modifications for the Wraith 'C' Series, detailing parts affected in different departments.25th Nov 1938Box 108 \ 2  scan0177
Internal report detailing part lists, design changes, and tooling updates for various departments.25th Nov 1938Box 108 \ 2  scan0178
Requesting a reply regarding a price reduction for Shock Damper Bellows for the Wraith III 'C' Series.25th Nov 1938Box 108 \ 2  scan0179
List of mileage figures for Wraith vehicles up to the Motor Show on October 24th, 1938.29th Nov 1938Box 108 \ 2  scan0180
Instructing the Repair Department to carry out urgent modifications on an experimental Wraith chassis 25.G.VI.30th Nov 1938Box 108 \ 2  scan0181
Instruction to release the Distributor and its connected parts for the first 100 Wraith 'C' Series chassis.8th Dec 1938Box 108 \ 2  scan0182
The change of flywheel marking from B.A.I. to IGN for the Wraith and Bentley V models.9th Dec 1938Box 108 \ 2  scan0183
Questioning the maximum speed limitation of Wraith cars.13th Dec 1938Box 108 \ 2  scan0184
Criticisms regarding the performance and springing of Wraith cars.13th Dec 1938Box 108 \ 2  scan0185
Faults found with a car, including governor, springing, and gearbox issues.13th Dec 1938Box 108 \ 2  scan0186
Modifications to a Wraith car's steering and gearbox.19th Dec 1938Box 108 \ 2  scan0187
Requesting to fit a Delco distributor and necessary change over parts to chassis 28.G.VI.19th Dec 1938Box 108 \ 2  scan0188
Status of modifications for Wraith Export Chassis.3rd Jan 1939Box 108 \ 2  scan0189
Checklist table tracking the status of work completed on various vehicle components for different chassis series.4th Jan 1939Box 108 \ 2  scan0190
List of modifications to be carried out on the Wraith chassis.4th Jan 1939Box 108 \ 2  scan0191
Inspection procedures for wheel nuts and fan clearance.4th Jan 1939Box 108 \ 2  scan0192
Issuing instructions for exhaust fittings and petrol pump parts for the Wraith 'C' Series chassis.5th Jan 1939Box 108 \ 2  scan0193
List of retrospective design modifications for the Wraith chassis and associated costs.7th Jan 1939Box 108 \ 2  scan0194
Analysis of Wraith engine characteristics, comparing its performance with a Humber 'Super Snipe' and evaluating different camshaft and induction systems.13th Jan 1939Box 108 \ 2  scan0195
Technical summary comparing Bentley and Wraith camshafts, exhaust systems, and carburettors.13th Jan 1939Box 108 \ 2  scan0196
Test report comparing four different camshafts on a single engine.16th Jan 1939Box 108 \ 2  scan0197
The testing of various camshafts and induction systems, analysing their effect on engine noise and performance.16th Jan 1939Box 108 \ 2  scan0198
The concluding page of a report on a camshaft comparison and compression ratio.16th Jan 1939Box 108 \ 2  scan0199
Graph comparing the power output of a Bentley III engine using different induction and exhaust systems.16th Jan 1939Box 108 \ 2  scan0200
Graph comparing the power output and I.B.M.E.P. of different induction and exhaust systems on a Bentley III engine.16th Jan 1939Box 108 \ 2  scan0201
Graph comparing power curves for different induction and exhaust systems on a Bentley III engine.16th Jan 1939Box 108 \ 2  scan0202
Power curve graph comparing two different camshafts for a Bentley III engine.16th Jan 1939Box 108 \ 2  scan0203
Graph comparing the power performance of two different camshafts for a Bentley III engine.16th Jan 1939Box 108 \ 2  scan0204
Camshaft comparison power curve graph for a Bentley III engine using Ethyl petrol.16th Jan 1939Box 108 \ 2  scan0205
Power curve graph comparing the performance of different induction and exhaust systems on a Bentley III engine.16th Jan 1939Box 108 \ 2  scan0206
Specification sheet detailing the data for the Humber Super Snipe.16th Jan 1939Box 108 \ 2  scan0207
Record of steering ratio and vehicle weight distribution, with a note on dynamometer power curves.16th Jan 1939Box 108 \ 2  scan0208
Dynamometer test chart for a Humber Super Snipe showing corrected BHP vs engine RPM.6th Jan 1939Box 108 \ 2  scan0209
Performance calculation sheet for the Humber Super Snipe, analyzing windage and horsepower requirements.16th Jan 1939Box 108 \ 2  scan0210
Road wheel horsepower comparison graph between a Humber Super Snipe and a Wraith 27 G VI.13th Jan 1939Box 108 \ 2  scan0211
List of modifications and fittings for Wraith car 25.G.VI.17th Jan 1939Box 108 \ 2  scan0212
Proposed adjustments to steering positions and pedal placement for various car models.17th Jan 1939Box 108 \ 2  scan0213
The replacement of a camshaft on chassis 25.G.VI (No.8 Unit).2nd Feb 1939Box 108 \ 2  scan0214
Material modification for the Wraith Servo system.3rd Feb 1939Box 108 \ 2  scan0215
Performance improvement experiments on the Wraith model, focusing on the exhaust system, pistons, and camshaft.8th Feb 1939Box 108 \ 2  scan0216
Policy discussion on improving the Wraith's performance versus other qualities like silence and smoothness due to competition.8th Feb 1939Box 108 \ 2  scan0217
The introduction of a Bentley V type Camshaft for the Wraith 'G' Series.17th Feb 1939Box 108 \ 2  scan0218
The performance of the Wraith and arranging a discussion for improvements.8th Feb 1939Box 108 \ 2  scan0219
Delay in deciding on Wraith performance alterations pending the completion of tests.17th Feb 1939Box 108 \ 2  scan0220
Forwarding a note from Mr. Caswell giving his impressions of the Wraith car.11th Mar 1939Box 108 \ 2  scan0221
Driving impressions and feedback on a 28.G. Wraith car after 3,000 miles.10th Mar 1939Box 108 \ 2  scan0222
Steering characteristics, specifically the 'nibbling' issue, comparing US and UK car models.10th Mar 1939Box 108 \ 2  scan0223
Performance review of the Wraith model's springing and roadability.10th Mar 1939Box 108 \ 2  scan0224
Sending Wraith car 25.G.VI into the fitting shop for a Humber type exhaust system.14th Mar 1939Box 108 \ 2  scan0225
Modifications to convert a Wraith engine to a 3¼' bore for a Rationalised Programme.18th Mar 1939Box 108 \ 2  scan0226
Decision on introducing engine alterations for the Wraith performance model.17th Feb 1939Box 108 \ 2  scan0227
Production schedule and material scrap costs for the Wraith 'C' Series.22th Mar 1939Box 108 \ 2  scan0228
Engine repair instructions for a Wraith III No. 3 unit.22th Mar 1939Box 108 \ 2  scan0229
Modifications to engine and gearbox mountings on car 24.O.6.27th Mar 1939Box 108 \ 2  scan0230
Performance comparison test between two Wraith models, focusing on acceleration and engine smoothness.28th Mar 1939Box 108 \ 2  scan0231
The material release schedule for the Wraith 'D' Series.28th Mar 1939Box 108 \ 2  scan0232
Test run report detailing issues with carburation and the clutch.12th Apr 1939Box 108 \ 2  scan0233
Comparative performance and oil temperature test report for two vehicles at Brooklands.25th Apr 1939Box 108 \ 2  scan0234
Oil temperature test results from 7 consecutive laps, comparing engine performance with a Tin bottom half versus an Aluminium bottom half.25th Apr 1939Box 108 \ 2  scan0235
Comparative water temperature tests on two Wraith cars, 29.G.VI and 28.G.VI.3rd May 1939Box 108 \ 2  scan0236
Complaints regarding insufficient undershielding on the Wraith, causing mud to cover the engine.3rd May 1939Box 108 \ 2  scan0237
Responding to a complaint about ineffective undershielding on a Wraith model, asking for the location of mud entry.11th May 1939Box 108 \ 2  scan0238
Request to manufacture a set of undershields for car 28.G.VI based on verbal instructions.11th May 1939Box 108 \ 2  scan0239
Requesting a trial set be made of a cheaper dynamo drive scheme (SCD.1040) for the Wraith or B.V. model.13th May 1939Box 108 \ 2  scan0240
Engine cleanliness issues and the feasibility of an under tray for the Wraith model.18th May 1939Box 108 \ 2  scan0241
Multiple faults found in a vehicle after a weekend run.5th Jun 1939Box 108 \ 2  scan0242
Parts and blueprint list for the Wraith III chassis, covering dynamo, crankcase, and wheelcase sections.7th Jun 1939Box 108 \ 2  scan0243
Parts list grouped by section, detailing part numbers, names, and quantities.7th Jun 1939Box 108 \ 2  scan0244
Parts list and instruction memo with quantities for various components.7th Jun 1939Box 108 \ 2  scan0245
Engine misfiring issue caused by a faulty Lucas distributor, which was resolved by fitting a Delco distributor.10th Jun 1939Box 108 \ 2  scan0246
Comparative report on petrol consumption and performance tests of cars 3.B.50 and 28.G.VI at Brooklands.10th Jun 1939Box 108 \ 2  scan0247
Comparison of acceleration times and lap speeds for different exhaust and carburetor configurations.10th Jul 1939Box 108 \ 2  scan0248
Calculation of the moment of inertia and centre of gravity for the 28.G model.10th Jul 1939Box 108 \ 2  scan0249
Diagram and calculations for vehicle moment of inertia and weight distribution.10th Jul 1939Box 108 \ 2  scan0250
Investigation into faulty ignition causing misfires on car 25.G.VI.17th Jul 1939Box 108 \ 2  scan0251
Moments of inertia and centres of gravity for car models 28.G.VI and 9.B.V.24th Jul 1939Box 108 \ 2  scan0252
Specifications for car weight, wheelbase, and center of gravity for model 10.B.V.24th Jul 1939Box 108 \ 2  scan0253
The progress and time taken for modifications to Wraith and Bentley chassis.1st Jul 1939Box 108 \ 2  scan0254
The status of steering modifications for 200 Bentley chassis.1st Jul 1939Box 108 \ 2  scan0255
The loan and handover of experimental cars during a camp.12th Aug 1939Box 108 \ 2  scan0256
Outstanding faults with the Wraith Chassis based on owner complaints.28th Aug 1939Box 108 \ 2  scan0257
Electrical failures including faulty coils, dynamo regulators, and ammeter short circuits.28th Aug 1939Box 108 \ 2  scan0258
Bar chart report summarizing customer complaints for the Wraith model by component.1st Aug 1939Box 108 \ 2  scan0259
Fault analysis chart for the Wraith model, listing issues and their frequency.1st Aug 1939Box 108 \ 2  scan0260
Fault analysis chart for the Wraith model, categorizing issues by system.1st Aug 1939Box 108 \ 2  scan0261
List of reported faults and modifications for the Wraith model, categorised by system.1st Aug 1939Box 108 \ 2  scan0262
Diagram concerning the sticking of the accelerator pedal due to a fouling plate on the Wraith model.15th Apr 1940Box 108 \ 2  scan0263
Notification of a price increase for Wraith Cars, listing old and new prices for various models.15th Apr 1940Box 108 \ 2  scan0264
Letter to Hinckley Technical College regarding the loan of a Bentley engine for research purposes.4th Jul 1940Box 108 \ 2  scan0265
Letter from Hinckley Technical College regarding the loan of an engine for a test bench.8th Jul 1940Box 108 \ 2  scan0266
Letter to Hinckley Technical College regarding an alteration to the type of engine being loaned.16th Jul 1940Box 108 \ 2  scan0267
Secret internal communication requesting the early release of a Wraith car for reconditioning and demonstration purposes.26th Jul 1938Box 108 \ 3  scan0001
Secret memo discussing the release of a Wraith for demonstration and keeping a 26.G. for experimental work.28th Jul 1938Box 108 \ 3  scan0002
Acquisition and preparation of a Wraith Limousine for demonstration purposes.29th Jul 1938Box 108 \ 3  scan0003


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