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
Testing reduced valve lift on the Phantom III engine to achieve quieter timing gears.19th Aug 1937Box 155 \ 2  scan0128
Status report on tests for experimental Bentley units, with specifications for the B-2 spare unit.30th Aug 1937Box 155 \ 2  scan0129
Specifications for engine components of models B-3 and B-4, including post-endurance examination results.30th Aug 1937Box 155 \ 2  scan0130
List of specifications and modifications for various engine builds.30th Aug 1937Box 155 \ 2  scan0131
Specification sheet listing engine and vehicle components and settings.30th Jun 1937Box 155 \ 2  scan0132
Specifications for two engine builds, B-18 for testing with Nelson Bohnalite pistons and B-19 for assembly.30th May 1937Box 155 \ 2  scan0133
List of engine component specifications and modifications.30th Jun 1937Box 155 \ 2  scan0134
Specification sheet detailing modifications for engine builds B-22, B-23, and B-24.30th Aug 1937Box 155 \ 2  scan0135
Programme of test bed work for a Wraith III engine and a Bentley Bed.3rd Sep 1937Box 155 \ 2  scan0136
Program of engine component tests including rockers, pistons, camshafts and valve systems.3rd Sep 1937Box 155 \ 2  scan0137
Testing requirements for engine clearances, tappet noise, and a trial twin exhaust manifold.3rd Sep 1937Box 155 \ 2  scan0138
List detailing the status and tests being carried out on Phantom III experimental units.6th Sep 1937Box 155 \ 2  scan0139
Development tests and assembly notes for engine units No. 3, 4, and 6.6th Sep 1937Box 155 \ 2  scan0140
Specification list for engine units numbered 6, 8, 9, and 10, detailing their components and status.6th Sep 1937Box 155 \ 2  scan0141
List of specifications for engine units number 10, 11, and 12.6th Sep 1937Box 155 \ 2  scan0142
List of modifications and specifications for engine units 13 (32-EX) and 14.6th Sep 1937Box 155 \ 2  scan0143
Specification sheet detailing the components and modifications for Units 14, 15, and 16.6th Sep 1937Box 155 \ 2  scan0144
Specification for the 250-hour endurance type test for the Wraith engine.14th Sep 1937Box 155 \ 2  scan0145
List of procedures and conditions for endurance testing of an engine unit, page 2.14th Sep 1937Box 155 \ 2  scan0146
Continued list of parameters to be recorded during testing, such as temperatures, pressures, and consumption.15th Sep 1937Box 155 \ 2  scan0147
Programme of test bed work for the Wraith III No. 2 unit, detailing tests to address oil leaks and evaluate induction and exhaust systems.15th Sep 1937Box 155 \ 2  scan0148
Instructions for endurance testing of various engine units and components.15th Sep 1937Box 155 \ 2  scan0149
Hold-up on No.2 Bed for modifications and subsequent continuation of tests.15th Sep 1937Box 155 \ 2  scan0150
Requesting the urgent conversion of No. 30 Test Bed from a Bentley to a Wraith III configuration.22th Sep 1937Box 155 \ 2  scan0151
Status report on tests for Wraith III, II, and 25/30 units, including test bed, chassis, and engine specifications.23th Sep 1937Box 155 \ 2  scan0152
List of engine and component specifications for various units, including spare parts.3rd Sep 1937Box 155 \ 2  scan0153
Specification sheet detailing components and modifications for Wraith II and Wraith III units.23th Sep 1937Box 155 \ 2  scan0154
Specification details for three different Wraith III engine units (No.2, No.3, and No.4).23th Sep 1937Box 155 \ 2  scan0155
List of specifications and modifications for the Wraith III, No. 5 Unit.23th Sep 1937Box 155 \ 2  scan0156
Programme of test bed work for the Wraith III No.6 Unit, detailing new features and test procedures.30th Sep 1937Box 155 \ 2  scan0157
Engine component testing instructions and modifications for various units.30th Sep 1937Box 155 \ 2  scan0158
Series of engine component testing procedures and instructions.30th Sep 1937Box 155 \ 2  scan0159
Request for data and special brackets to test a Phantom III unit with a Sommers indicator and dampers.30th Sep 1937Box 155 \ 2  scan0160
Programme of test bed work for Wraith III engines No. 6 and No. 2, detailing endurance runs and modification tests.8th Oct 1937Box 155 \ 2  scan0161
Engine and component testing procedures and endurance test updates.8th Oct 1937Box 155 \ 2  scan0162
Request to rewire the charging circuit for the Wraith No. 30 test house No.2 bed.7th Oct 1937Box 155 \ 2  scan0163
Request for a pane of glass to be installed in the window of No. 5 Test House.18th Oct 1937Box 155 \ 2  scan0164
Programme of test bed work for the Wraith III No. 6 engine, detailing tests for distribution, oil consumption, and the oil filter.17th Nov 1937Box 155 \ 2  scan0165
Test and observation schedule for the running-in of the Wraith III No. 7 Unit.17th Nov 1937Box 155 \ 2  scan0166
Test schedule for various engine units, including damper comparisons, clutch tests, and bearing endurance.17th Nov 1937Box 155 \ 2  scan0167
Test report on Buick type pistons and a trial of a Bentley 50 type cylinder head.17th Nov 1937Box 155 \ 2  scan0168
Revision of programmes for Experimental Chassis Test Beds No. 33 and No. 5.26th Nov 1937Box 155 \ 2  scan0169
Request to fit a 25/30 steering roller, produced by Hoffmanns, to the rig steering box.1st Dec 1937Box 155 \ 2  scan0170
Programme of test bed work for Wraith III engine units No. 6 and No. 8.10th Dec 1937Box 155 \ 2  scan0171
Test procedures and modifications for Wraith III and PH.III engine units.10th Nov 1937Box 155 \ 2  scan0172
Units available for oil consumption, piston, and cylinder bore wear tests.10th Dec 1937Box 155 \ 2  scan0173
List and specification sheet for experimental Bentley and Phantom III engine units.20th Dec 1937Box 155 \ 2  scan0174
List of specifications and tests for various engine components and builds.20th Dec 1937Box 155 \ 2  scan0175
List of engine component specifications, part numbers, and clearances.20th Dec 1937Box 155 \ 2  scan0176
List of specifications for various engine components, modifications, and test configurations.20th Dec 1937Box 155 \ 2  scan0177
List of specifications for engine components, including crankshafts, cylinder heads and pistons for Phantom III and Spare Test Units.20th Dec 1937Box 155 \ 2  scan0178
List of specifications for the assembly of Unit No.6 for endurance testing.20th Dec 1937Box 155 \ 2  scan0179
Specification sheet for the assembly and testing of engine units No. 12 and No. 13.20th Dec 1937Box 155 \ 2  scan0180
List of specifications and modifications for engine unit No. 14.20th Dec 1937Box 155 \ 2  scan0181
List of modifications and component specifications for various engine builds, including Unit No.16 (35-EX).20th Dec 1937Box 155 \ 2  scan0182
Notes on a Fabroil idler, cork oil level float, standard flywheel and clutch, and a filler cap.20th Dec 1937Box 155 \ 2  scan0183
General development position summary on Phantom III and Wraith experimental cars and ongoing tests.29th Dec 1937Box 155 \ 2  scan0184
Progress report on vehicle component testing and improvements for the Wraith and Bentley models.29th Dec 1937Box 155 \ 2  scan0185
Progress report on projects B.III and B.50, including chassis, engine testing, and gearbox development.29th Dec 1937Box 155 \ 2  scan0186
Programme of test bed work for Wraith III units, focusing on oil consumption and piston ring issues.3rd Jan 1938Box 155 \ 2  scan0187
Testing procedures and observations for Wraith III engine units No. 8 and No. 9.3rd Jan 1938Box 155 \ 2  scan0188
Progress report on endurance testing, component changes, and fuel comparison for various engine units.3rd Jan 1938Box 155 \ 2  scan0189
Test schedule for engine components including piston comparisons, bore wear, and exhaust system analysis.3rd Jan 1938Box 155 \ 2  scan0190
Continuation of a report on exhaust system tests, comparing 3-port and 4-port systems for head design B.111.3rd Jan 1938Box 155 \ 2  scan0191
Renovation of the No.5 Test House to fit the new B.50 engine on the Phantom III test bed.26th Jan 1938Box 155 \ 2  scan0192
Programme of test bed work for a B.III No.1 Unit, detailing power comparison and performance improvement tests.27th Jan 1938Box 155 \ 2  scan0193
Series of engine tests, modifications, and future test plans for various units.27th Jan 1938Box 155 \ 2  scan0194
Endurance test specifications and procedures for the Phantom III No.6 engine unit.27th Jan 1938Box 155 \ 2  scan0195
Engine endurance test schedule for exhaust system comparisons on a Phantom III unit.27th Jan 1938Box 155 \ 2  scan0196
Status report on the positions and tests being carried out on Wraith and Bentley III units.7th Feb 1938Box 155 \ 2  scan0197
List of specifications and modifications for various Wraith II and Wraith III engine units.7th Feb 1938Box 155 \ 2  scan0198
Specification and modification notes for Wraith III engine units No.2, No.3, No.4, and No.5.7th Feb 1938Box 155 \ 2  scan0199
Specification sheet for Wraith III units No. 5, 6, and 7.7th Feb 1938Box 155 \ 2  scan0200
Specifications and exceptions for various Wraith III and Bentley III engine units.7th Feb 1938Box 155 \ 2  scan0201
Programme of test bed work for B.III No.1 and Wraith III No.2 engine units.2nd Mar 1938Box 155 \ 2  scan0202
Test specifications for Wraith III and Wraith II engine units, detailing modifications and running procedures.2nd Mar 1938Box 155 \ 2  scan0203
Instructions for comparative bore wear tests on a Wraith III unit and exhaust system investigation on a No. 2 Bed unit.2nd Mar 1938Box 155 \ 2  scan0204
Results of test bed trials on engine suppressors and their durability.3rd Mar 1938Box 155 \ 2  scan0205
Test report on the effect of Dubilier suppressors on Bentley engine performance.7th Feb 1938Box 155 \ 2  scan0206
Programme of test bed work for B.III and Wraith III engine units.28th Mar 1938Box 155 \ 2  scan0207
Test procedures for a Bentley III engine unit and a single cylinder unit on test beds.28th Mar 1938Box 155 \ 2  scan0208
Instructions for exhaust system comparisons on an OHC Bentley and endurance testing for a B.4 unit.28th Mar 1938Box 155 \ 2  scan0209
Programme of test bed work for engine units B.III and Wraith III, focusing on valve bounce and torsional oscillation.27th Apr 1938Box 155 \ 2  scan0210
Test and modification notes for Wraith III engine units, including special parts.27th Apr 1938Box 155 \ 2  scan0211
Endurance testing procedures for a distributor and camwheel, with additional instructions for reports and a Bentley Bed unit.27th Apr 1938Box 155 \ 2  scan0212
Endurance testing procedures and special parts fitted for a B.4 unit and a single cylinder test.27th Apr 1938Box 155 \ 2  scan0213
Reports on Jaguar and Bentley exhaust systems, crankshaft oscillations, and engine timing adjustments.27th Apr 1938Box 155 \ 2  scan0214
Request to re-wire connections between the starter motor, switchboard, and dynamo in No. 30 Test House.4th May 1938Box 155 \ 2  scan0215
The purchase of six glass thermometers for chassis experimental test beds.17th May 1938Box 155 \ 2  scan0216
Programme of test bed work for a B.III No.1 Unit, detailing investigations into exhaust systems and cylinder head configurations.21th May 1938Box 155 \ 2  scan0217
Progress report on the testing and development of B.III and Wraith III engine units.21th May 1938Box 155 \ 2  scan0218
Test procedures and parts fitted for B.III No. 3 unit and Wraith III No. 7 unit.21th May 1938Box 155 \ 2  scan0219
Engine testing report detailing procedures for Wraith III, Oldsmobile, and single-cylinder units.21th May 1938Box 155 \ 2  scan0220
Instructions for re-assembling a B.III NO.4 unit to compare its standard head against an adapted B.III head.21th May 1938Box 155 \ 2  scan0221
Status report on the position and tests being carried out on Wraith and Bentley III units.3rd Jun 1938Box 155 \ 2  scan0222
Specification details for three different Wraith III engine units.3rd Jun 1938Box 155 \ 2  scan0223
Specifications and details for Wraith III engine units No. 3, No. 4 (Test Bed), and No. 5.3rd Jun 1938Box 155 \ 2  scan0224
Specification updates for Wraith III units No. 5, 6, 7, and 8.3rd Jun 1938Box 155 \ 2  scan0225
Specification sheet detailing modifications and components for various Wraith and B.III engine units.3rd Jun 1938Box 155 \ 2  scan0226
Specifications for B.III No.2 and No.3 Units, detailing component changes and exceptions.3rd Jun 1938Box 155 \ 2  scan0227


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