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
Suggestion to change studs to set screws on the Wraith III engine controls for easier assembly with the steering box.2nd Jul 1937Box 6 \ 6  06-page243
Progress report on the testing of the third Wraith car and its engine performance.5th Jul 1937Box 6 \ 6  06-page244
List of 17 modifications and repairs to be carried out on a specific car.26th Aug 1941Box 6 \ 6  06-page245
List of modifications and tasks for an engine, including fitting parts and interchanging components.10th Jul 1937Box 6 \ 6  06-page246
Changes to hole sizes for the Wraith III rear engine and gearbox suspension.10th Jul 1937Box 6 \ 6  06-page247
Specification changes to be included for three Wraith chassis.26th Jul 1937Box 6 \ 6  06-page248
Vacuum ignition control for the Wraith III model, referencing drawing LeC.5756.30th Jun 1937Box 6 \ 6  06-page249
Two fitting jobs for a Wraith III car.2nd Aug 1937Box 6 \ 6  06-page250
Work programme of checks and adjustments for a 25-0-VI vehicle.5th Aug 1931Box 6 \ 6  06-page251
Programme of work including engine tuning, performance figures, and steering checks for the 24-G-VI model.5th Aug 1937Box 6 \ 6  06-page252
Work programme for vehicle 27-G-VI.5th Aug 1931Box 6 \ 6  06-page253
Provisional specification for the Wraith car, listing unsatisfactory parts and production progress.16th Jun 1937Box 6 \ 6  06-page254
Modifications for a car, including fitting a new crossmember, Wraith fan, and experimental undershields.18th Aug 1937Box 6 \ 6  06-page255
Tests of a Wraith III 'mock-up' unit, detailing modifications to the cylinder block and valve gear.19th Aug 1937Box 6 \ 6  06-page256
The trial of 25/30 rockers, and modifications to bottom tappets and valve gear to reduce noise.19th Aug 1937Box 6 \ 6  06-page257
Engine development, discussing camshaft clearances, valve bounce, springs, timing gears, and lubrication.19th Aug 1937Box 6 \ 6  06-page258
Engine development issues including overoiling, lubrication, oil filtration, and induction system improvements.19th Aug 1937Box 6 \ 6  06-page259
Investigation into an oil leak from the engine into the clutch pit.19th Aug 1937Box 6 \ 6  06-page260
Blueprint drawing for a Tappet component for Wraith Valves & Fittings.30th Jun 1930Box 6 \ 6  06-page261
Blueprint for a Tappet, detailing dimensions, materials, and manufacturing processes.19th Aug 1937Box 6 \ 6  06-page262
Performance graph for the WRAITH unit showing B.HP and B.M.E.P. vs R.P.M. under various test conditions.9th Aug 1937Box 6 \ 6  06-page263
Specification of the Wraith III chassis, detailing modifications and parts for frames and fittings.21th Aug 1937Box 6 \ 6  06-page264
List of modifications and parts for frames, fittings, petrol system, and rear engine suspension.21th Aug 1937Box 6 \ 6  06-page265
Specification sheet detailing parts for frames, fittings, and wing stays.21th Aug 1937Box 6 \ 6  06-page266
List of parts and modifications for the Front Apron, Rear Road Springs, and Steering Column and Box.21th Aug 1937Box 6 \ 6  06-page267
List of parts and modifications for a vehicle's steering column, box, and tube.21th Jun 1937Box 6 \ 6  06-page268
List of parts and fittings for dashbrackets, floorboards, and pressure piping.21th Aug 1937Box 6 \ 6  06-page269
List of modifications and parts including pedals, floorboards, oil pump, and shock dampers.21th Aug 1937Box 6 \ 6  06-page270
List of modifications for various vehicle systems including suspension, dampers, and tanks.21th Aug 1937Box 6 \ 6  06-page271
Modifications to spring suspension components and spring load specifications.21th Aug 1937Box 6 \ 6  06-page272
Status report on front axle, brakes, hubs, and steering components with associated part numbers.21th Aug 1937Box 6 \ 6  06-page273
List of parts and modifications for vehicle steering, suspension, and rear axle assemblies.21th Aug 1937Box 6 \ 6  06-page274
List of modifications and components related to rear brakes, rear hubs, and brake equalising gear.21th Aug 1937Box 6 \ 6  06-page275
List of part numbers and modifications for brake, shaft, and radiator components.21th Aug 1937Box 6 \ 6  06-page276
Specification list for bumpers, a spare wheel carrier, bonnet, and exhaust fittings.21th Aug 1937Box 6 \ 6  06-page277
List of drawings and modifications relating to the gearbox and starting handle.21th Aug 1937Box 6 \ 6  06-page278
List of parts and modifications related to the gearbox and actuating gear.21th Aug 1937Box 6 \ 6  06-page279
Parts list for the 1st, 2nd, and 3rd Motion Shafts of a gearbox assembly.21th Aug 1937Box 6 \ 6  06-page280
List of parts and modifications for the Speedometer Drive, Reverse Gear, Servo Drive, Servo Countershaft, and Servo Mechanism.21th Aug 1937Box 6 \ 6  06-page281
List of modifications and specifications for the servo motor, change speed mechanism, and engine components.21th Mar 1937Box 6 \ 6  06-page282
Specifications sheet detailing modifications and dimensions for the crankcase, bearings, spring drive, crankshaft, and connecting rods.21th Aug 1937Box 6 \ 6  06-page283
Specification sheet listing engine components and related part numbers or modifications.21th Aug 1937Box 6 \ 6  06-page284
List of specifications and modifications for various engine components.21th Aug 1937Box 6 \ 6  06-page285
Specification sheet listing electrical components and their associated part numbers.21th Aug 1937Box 6 \ 6  06-page286
List of electrical components including Dynamo, Ignition Coils, and Switches with their associated parts and specifications.21th Aug 1937Box 6 \ 6  06-page287
List of electrical components and their associated parts lists, schemes, or status.21th Aug 1937Box 6 \ 6  06-page288
Specification list for the Wraith III model, detailing parts not yet released for production and their current status.21th Aug 1937Box 6 \ 6  06-page289
Results of performance tests on different ignition coils.25th Aug 1937Box 6 \ 6  06-page290
The Wraith III Specification, requesting to attach a list of sections not yet commenced.27th Aug 1937Box 6 \ 6  06-page291
List of features to be included in a forthcoming drawing for a crankcase and its bearings.21th Aug 1937Box 6 \ 6  06-page292
Request for the centre of mass of a Wraith III engine for suspension design purposes.28th Aug 1937Box 6 \ 6  06-page293
Request to determine the Centre of Mass for a Wraith III engine in both elevation and cross-section.30th Aug 1937Box 6 \ 6  06-page294
Road test feedback and points for improvement on a Close-coupled Wraith model.30th Aug 1937Box 6 \ 6  06-page295
Production issues and helix errors found in Wraith engine timing gears.30th Aug 1937Box 6 \ 6  06-page296
Requesting the manufacture of modified parts for the Wraith III engine.30th Aug 1937Box 6 \ 6  06-page297
Specification change for the production Wraith III chassis rear axle.1st Sep 1937Box 6 \ 6  06-page298
Proposal to build six Wraith chassis, requesting input on modifications to the specification.8th Sep 1937Box 6 \ 6  06-page299
List of faults and the status of investigations for the Wraith model.8th Sep 1937Box 6 \ 6  06-page300
List of six modifications and maintenance tasks to be performed on a Wraith III car.11th Sep 1937Box 6 \ 6  06-page301
Modification to the connection for the engine oil pressure gauge on the Wraith III model.13th Sep 1937Box 6 \ 6  06-page302
Type test procedure for the Wraith model, outlining a 250-hour engine endurance test.14th Sep 1937Box 6 \ 6  06-page303
List of test procedures detailing equipment, running conditions for oil and water, and post-test inspection requirements.14th Sep 1937Box 6 \ 6  06-page304
Continued list of parameters for observation and adjustment, including temperatures, pressures, and consumption.15th Sep 1937Box 6 \ 6  06-page305
Confirmation of a modification to the Wraith induction pipe EW.862 for distribution tests.15th Sep 1937Box 6 \ 6  06-page306
Modification of a Wraith induction pipe and requesting the production of two sets.15th Sep 1937Box 6 \ 6  06-page307
Parts list and request for the production of a Wraith built-up induction pipe with a hot spot.17th Sep 1937Box 6 \ 6  06-page308
List of 18 outstanding issues and problems with a specific vehicle.20th Sep 1937Box 6 \ 6  06-page309
Summary of driving impressions and faults found on a Wraith car after a fortnight's test.20th Sep 1937Box 6 \ 6  06-page310
Performance of the clutch, engine unit, and suspension.20th Sep 1937Box 6 \ 6  06-page311
Faults found in the electrical equipment, bodywork, and petrol pump of a vehicle.20th Sep 1937Box 6 \ 6  06-page312
List of outstanding issues and jobs to be completed on a car.20th Sep 1937Box 6 \ 6  06-page313
Test driver's report on the performance of a Wraith car, detailing faults with the brakes, steering, and gearbox.20th Sep 1937Box 6 \ 6  06-page314
Vehicle performance report discussing the clutch, engine unit, and suspension.20th Sep 1937Box 6 \ 6  06-page315
Faults with the electrical equipment, bodywork, and petrol pump system.20th Sep 1937Box 6 \ 6  06-page316
Modifications to water pipes, breather pipes, oil feed, and exhaust bracket for the Wraith III.20th Sep 1937Box 6 \ 6  06-page317
Blueprint detailing the layout and positions of various engine pipes and hose joints.21th Sep 1917Box 6 \ 6  06-page318
Schematic of Macfield water and breather pipes on a Fuller gearbox for a Wraith III.21th Sep 1917Box 6 \ 6  06-page319
Modifications and issues with the Wraith III model's axle, brakes, and suspension.22th Sep 1937Box 6 \ 6  06-page320
Ongoing engineering issues and proposed modifications for various vehicle components.22th Sep 1937Box 6 \ 6  06-page321
Investigations and suggestions for various engine and drivetrain components.28th Sep 1937Box 6 \ 6  06-page322
Modification to the Wraith III chassis governor and distributor drive, requesting blueprints.28th Sep 1937Box 6 \ 6  06-page323
Complaints and proposed modifications for a specific vehicle's chassis.29th Sep 1937Box 6 \ 6  06-page324
Engine performance, suspension, electrical faults, and bodywork issues on Wraith cars.29th Sep 1937Box 6 \ 6  06-page325
Petrol pump warning lights, carburetter modifications, and tyre quietness on Wraith cars.29th Sep 1937Box 6 \ 6  06-page326
Instructional memo regarding blueprints and the production of parts for a Wraith III Chassis Spring Drive.29th Sep 1937Box 6 \ 6  06-page327
The assembly of three Wraith III units (Nos. 7, 8, and 9).30th Sep 1937Box 6 \ 6  06-page328
Various vehicle complaints and planned modifications.29th Sep 1937Box 6 \ 6  06-page329
Ongoing experiments and fixes for engine, electrical, and bodywork issues on Wraith cars.29th Sep 1937Box 6 \ 6  06-page330
Petrol pump warning lights, carburettor modifications, and tyre quietness.29th Sep 1937Box 6 \ 6  06-page331
Investigation into engine misfires on a Wraith model, involving the testing of different ignition coils.30th Sep 1937Box 6 \ 6  06-page332
Instruction regarding blueprints and a List of Parts for the Wraith III Chassis dynamo drive.1st Oct 1937Box 6 \ 6  06-page333
Specification page for six electrical sets.1st Oct 1937Box 6 \ 6  06-page334
Instructions regarding new blueprints and a List of Parts for the Wraith III Chassis oil filler section.1st Oct 1937Box 6 \ 6  06-page335
Changes to the Wraith III chassis rear axle, including stiffened axle shafts and improved clearances.10th Oct 1937Box 6 \ 6  06-page336
Specification for the production of 6 Wraith III chassis.4th Oct 1937Box 6 \ 6  06-page337
List of modifications and components for rear springs, steering, dashbrackets, and floorboards.5th Oct 1937Box 6 \ 6  06-page338
List of parts and operations for various vehicle components including piping, pedals, and dampers.5th Oct 1937Box 6 \ 6  06-page339
List of parts and modifications for vehicle components including dampers, suspension, and axles.5th Oct 1937Box 6 \ 6  06-page340
List of modifications and incorporations for front brakes, hubs, steering, and rear axle assemblies.5th Oct 1937Box 6 \ 6  06-page341
List of specifications and modifications for brake and propeller shaft components.5th Oct 1937Box 6 \ 6  06-page342


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