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
Query regarding the end pull characteristics of a starter motor armature with a corresponding diagram.1st Oct 1926Box 64 \ 1  scan0246
Test results for a sequence starter, discussing armature pull and current variations with different windings.1st Oct 1926Box 64 \ 1  scan0247
Motor performance, including main winding turns, current, and frictional effects.9th Nov 1926Box 64 \ 1  scan0248
Redesign of a sequence starter motor for an EAC chassis, proposing changes and requesting performance data.9th Nov 1926Box 64 \ 1  scan0249
Torque-speed characteristics, stalling conditions, and heat-up times for EAC motors.13th Nov 1926Box 64 \ 1  scan0250
Requesting the amps and efficiency data for a sequence starter to complement an existing torque and revs curve.15th Nov 1926Box 64 \ 1  scan0251
Efficiency curves and brake tests for a sequence starter motor.19th Nov 1926Box 64 \ 1  scan0252
Proposed modifications to the sequence starter motor for a new 13 to 1 ratio.27th Nov 1926Box 64 \ 1  scan0253
Alterations to a motor design, particularly concerning the 'teazer winding' and experiments on the Phantom motor.27th Nov 1926Box 64 \ 1  scan0254
Specifications and proposed testing of three experimental sequence starter motors.1st Dec 1926Box 64 \ 1  scan0255
Specifications and test results for the revised Starter Motor A.2.1st Dec 1926Box 64 \ 1  scan0256
Graph showing the brake efficiency and performance characteristics of a starter motor.4th Dec 1926Box 64 \ 1  scan0257
The sequence starter motor to engine reduction gear ratios.4th Dec 1926Box 64 \ 1  scan0258
Query about the number of turns on a starter motor's field poles.6th Dec 1926Box 64 \ 1  scan0259
Issues with a sequence starter on an EAC.7 chassis and proposed switch modifications.16th Dec 1926Box 64 \ 1  scan0260
Testing a spring contact switch and gear engagement mechanism to reduce operational noise.1st Dec 1926Box 64 \ 1  scan0261
Follow-up report on modifications and testing of a sequence starter, addressing backlash issues.6th Dec 1926Box 64 \ 1  scan0262
Standardisation of solid pole pieces for 20 HP dynamos and starter motors.8th Dec 1926Box 64 \ 1  scan0263
The use of solid versus laminated poles and armatures for various dynamo and motor models.8th Dec 1926Box 64 \ 1  scan0264
Specification for a starter motor for the 16-EX model, with modifications for the ERC-7.10th Dec 1926Box 64 \ 1  scan0265
Specification figures for an EAC sequence starter motor teazer circuit with old winding.13th Dec 1926Box 64 \ 1  scan0266
Alterations and details for the Phantom starter motor, including drawing references.16th Dec 1926Box 64 \ 1  scan0267
Comparison table of specifications for dynamos and motors of various horsepower ratings.16th Dec 1926Box 64 \ 1  scan0268
Requesting an instruction be added to drawing LeC.2334 for the Phantom starter ball bearing housing.18th Dec 1926Box 64 \ 1  scan0269
Request for the return of a sequence starter motor C for testing with a specific field coil arrangement.6th Jan 1927Box 64 \ 1  scan0270
Brake test observation log for a starter motor.28th Apr 1927Box 64 \ 1  scan0271
Table of smoothed and derived results from a starter motor brake test.21th Apr 1927Box 64 \ 1  scan0272
Starter motor brake test data sheet, showing results and related formulas.21th Apr 1927Box 64 \ 1  scan0273
Test report form detailing open circuit E.M.F., flux, and static torque tests for a starter motor.21th Apr 1927Box 64 \ 1  scan0274
Data table showing efficiency ratios from starter motor tests.14th Jun 1928Box 64 \ 1  scan0275
Test data sheet recording observations from a starter motor brake test.27th Jul 1928Box 64 \ 1  scan0276
Brake test observations for a starter motor.27th Jul 1928Box 64 \ 1  scan0277
Table of smoothed and derived results from a starter motor brake test.21th Apr 1927Box 64 \ 1  scan0278
Data sheet showing the results of a starter motor brake test, including relevant formulas.21th Apr 1927Box 64 \ 1  scan0279
Test results form for starter motor open circuit E.M.F., flux, and static torque.21th Apr 1927Box 64 \ 1  scan0280
Data table showing results from starter motor tests, specifically efficiency ratios.14th Jun 1928Box 64 \ 1  scan0281
Test report detailing starter motor resistance estimation at various loads for a G2 motor.7th Sep 1928Box 64 \ 1  scan0282
Performance characteristics graph for a starter motor, plotting Torque, Flux, and Voltage against Amperes.24th May 1927Box 64 \ 1  scan0283
Decision to use punched armature plates for the Phantom chassis motor, postponing the 20 HP motor update.24th May 1927Box 64 \ 1  scan0284
Electrical experimental record sheet for a Sequence Starter Motor, models A and A2.19th Apr 1926Box 64 \ 1  scan0285
Experimental record sheet for a sequence starter motor detailing tests, faults, repairs, and mileage.17th Mar 1927Box 64 \ 1  scan0286
Electrical experimental record sheet for tests conducted on Motor C2.19th Apr 1926Box 64 \ 1  scan0287
Electrical experimental record sheet for a sequence starter motor.4th Apr 1927Box 64 \ 1  scan0288
Electrical experimental record sheet for a Sequence Starter motor G2.19th Apr 1926Box 64 \ 1  scan0289
Different design combinations and trial options for the No.1 sequence starter scheme.11th Jun 1927Box 64 \ 1  scan0290
Continued memorandum discussing further trials of a scheme and asking for a decision to proceed or cancel.11th Jun 1927Box 64 \ 1  scan0291
Revised instructions and experiments for the Sequence Starter Scheme No.1.22th Jun 1927Box 64 \ 1  scan0292
The incompatibility of fitting a No.1 Scheme Sequence Starter to a No.2 Scheme crankcase due to a change in bolt dimensions.30th Jun 1927Box 64 \ 1  scan0293
Requesting a motor armature with a 20° spiral be substituted for one with a 5° spiral for testing on a sequence starter rig.2nd Jul 1927Box 64 \ 1  scan0294
EAC.7 Model Chassis, its starter motor, and potential rebuild into the EAC.10.12th Jul 1927Box 64 \ 1  scan0295
List of different schemes for sequence starter motors and gears with their part numbers.8th Aug 1927Box 64 \ 1  scan0296
Note on changing the armature of a Starter Motor G2, altering its resistance.26th Jun 1928Box 64 \ 1  scan0297
Brake test report for a starter motor.1st Dec 1926Box 64 \ 1  scan0298
Brake test report for starter motor model A2, detailing performance metrics under various loads.1st Dec 1926Box 64 \ 1  scan0299
Test results for starter motors on a chassis under cold and hot conditions.28th Jun 1928Box 64 \ 1  scan0300
Test data for a J Motor (14-EX) under cold and hot conditions, detailing volts, amps, and RPM.28th Jun 1928Box 64 \ 1  scan0301
Performance characteristic graph for a starter motor, plotting various metrics against torque.29th Aug 1928Box 64 \ 1  scan0302
Brake test observation log for a K2 starter motor.29th Aug 1928Box 64 \ 1  scan0303
Table of starter motor brake test results, showing smoothed and derived data.21th Apr 1927Box 64 \ 1  scan0304
Data sheet documenting starter motor brake tests.21th Apr 1927Box 64 \ 1  scan0305
Test data sheet for starter motor open circuit E.M.F., flux, and static torque tests.21th Apr 1927Box 64 \ 1  scan0306
Test report table showing efficiency ratios for a starter motor.14th Jun 1928Box 64 \ 1  scan0307
Table showing starter motor resistance estimations at various loads for the 'K' motor.7th Sep 1928Box 64 \ 1  scan0308
Blueprint graph of starter motor performance, plotting Voltage, Torque, and Flux against Amperes.8th Nov 1928Box 64 \ 1  scan0309
Reliability issues and lack of power in the new 'SS' starter motor compared to the Phantom model.8th Nov 1928Box 64 \ 1  scan0310
Excessive wear on a small pinion and issues with a noisy starter gear on car 14-EX.21th Dec 1928Box 64 \ 1  scan0311
Progress report on the 10,000-mile test of the 'SS' car, detailing starter motor adjustments and a clutch fault investigation.21th Dec 1928Box 64 \ 1  scan0312
Fitting a leather cup washer to an S.S. starter motor.17th Aug 1929Box 64 \ 1  scan0313
Hand-drawn sketch detailing an assembly with leather cups and a steel washer for an armature shaft.19th Aug 1929Box 64 \ 1  scan0314
Requesting the production and testing of new parts for a 40/50 HP chassis starter motor.19th Aug 1929Box 64 \ 1  scan0315
Proposing an alteration to the lower half crankchamber to facilitate the manufacturing of the starter motor housing.29th Jan 1929Box 64 \ 1  scan0316
Starter motor with a sliding armature.8th May 1925Box 64 \ 2  scan0001
Proposed scheme for a sequence starter unit, including a diagram and operational breakdown.22th Sep 1926Box 64 \ 2  scan0002
Request for performance data on a starter motor's armature, specifically its end pull characteristics.1st Oct 1926Box 64 \ 2  scan0003
Test results for a Sequence Starter, focusing on armature pull, windings, and current draw.1st Oct 1926Box 64 \ 2  scan0004
Continued memorandum discussing ampere turns, current draw, and frictional effects in an electrical motor or actuator.1st Oct 1926Box 64 \ 2  scan0005
Graph of curves showing the force exerted on the armature by the field axially for Starter Motor A.1st Oct 1926Box 64 \ 2  scan0006
Redesign of a starter motor for an EAC chassis, proposing the elimination of the epicyclic reduction gear.9th Nov 1926Box 64 \ 2  scan0007
Performance characteristics, stalling conditions, and heat-up times for EAC motors used in a sequence starter.13th Nov 1926Box 64 \ 2  scan0008
Modifications to the New Phantom starter motor for improved torque and efficiency.27th Nov 1926Box 64 \ 2  scan0009
Continued discussion on motor design, efficiency, and experiments on the Phantom motor.27th Nov 1926Box 64 \ 2  scan0010
Sending a re-designed starter motor and a request for private handling of internal correspondence.30th Nov 1926Box 64 \ 2  scan0011
Drawing for a Phantom direct drive starter motor and its placement.12th Feb 1936Box 64 \ 2  scan0012
Proposal to use brushes similar to the Phantom dynamo for the EAC.7 starter motor.24th Dec 1926Box 64 \ 2  scan0013
Copy of a telegram regarding the arrangement of turns on the poles of a new starter motor.4th Jan 1927Box 64 \ 2  scan0014
Responding to a telegram about the status of starter motor X.7625.4th Jan 1927Box 64 \ 2  scan0015
Request for a Phantom starter motor carcase to serve as a model due to difficulties with terminal arrangements.5th Jan 1927Box 64 \ 2  scan0016
Cost savings of using similar brush holder parts versus the technical efficiency of narrower brushes for a starter motor.5th Jan 1927Box 64 \ 2  scan0017
Requesting confirmation on the winding specifications for a new Phantom starter motor, including the number of turns and conductor size.5th Jan 1927Box 64 \ 2  scan0018
New Phantom Sequence Starter No. 2 scheme for a car going to Le Canadel.1st Jan 1927Box 64 \ 2  scan0019
Sketch detailing the scheme, number of turns, and conductor size for a Phantom starter motor.5th Jan 1927Box 64 \ 2  scan0020
Specifications for a Phantom starter motor carcase and winding.7th Jan 1927Box 64 \ 2  scan0021
The despatch of a Phantom starter motor carcase for inspection.7th Jan 1927Box 64 \ 2  scan0022
Design modifications for the Phantom Sequence Starter No.2, including changes to the carcase and windings.8th Jan 1927Box 64 \ 2  scan0023
Modifications to the Phantom starter motor windings regarding carcase length and conductor splitting.11th Jan 1927Box 64 \ 2  scan0024
Return of an incorrect starter motor carcase which was missing its field coils.1st Jan 1927Box 64 \ 2  scan0025
New parts and winding modifications for a sequence starter motor.25th Jan 1927Box 64 \ 2  scan0026
Design progress of a new automatic switch unit for a starter motor.27th Jan 1927Box 64 \ 2  scan0027
Use of a duplex push button switch for the No.2 Sequence Starter scheme.2nd Feb 1927Box 64 \ 2  scan0028
Elimination of faults in a pinion operated switch by applying the No. 2 scheme.2nd Feb 1927Box 64 \ 2  scan0029


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