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
Proposal to use a Bijur trembler regulator for the dynamo on the 20 HP and new 50 HP chassis.3rd May 1919Box 31 \ 1  Scan038
Extract discussing the number of contacts required for the main charging switch and vibrator regulator on a Lucas Junction Box.24th May 1919Box 31 \ 1  Scan039
Inquiring about the status of arrangements for the experimental production of condensers and vibrator regulators.30th May 1919Box 31 \ 1  Scan040
Production of electrical ignition condensers and vibratory regulators with B.T.H. and Watford Magneto Co.11th Jun 1919Box 31 \ 1  Scan041
Requesting recommendations for a vibrator regulator for the 20 HP chassis.18th Sep 1919Box 31 \ 1  Scan042
Information from the Delco Company regarding generators and plans to test competitor models.25th Nov 1919Box 31 \ 1  Scan043
Letter from Dayton Engineering Laboratories discussing third-brush-regulated versus voltage-control type generators.12th Nov 1919Box 31 \ 1  Scan044
The salient features required for generators to be purchased for the American Cars.31th Dec 1919Box 31 \ 1  Scan045
The requirements for the vehicle's battery charging system and electrical load calculations.31th Dec 1919Box 31 \ 1  Scan046
Generator control units, including correspondence with the Delco Company and tentative specifications.31th Dec 1919Box 31 \ 1  Scan047
Generator specifications and plans to acquire sample units from various manufacturers.31th Dec 1919Box 31 \ 1  Scan048
Report outlining the features of different electrical regulation systems, including the Third Brush Regulator and Constant Voltage System.31th Dec 1919Box 31 \ 1  Scan049
Report page detailing the operation of various generator and voltage regulator systems.31th Dec 1919Box 31 \ 1  Scan050
Query on the effect of temperature on dynamo regulation, comparing the trembler system and third brush regulation.20th Jan 1920Box 31 \ 1  Scan051
Report on American-made dynamos and their vibrator regulator control.10th Feb 1920Box 31 \ 1  Scan052
Continued memo discussing cutting-in speed variations in dynamos, including for the Prince of Wales' car, and proposing further tests.10th Feb 1920Box 31 \ 1  Scan053
Car wiring connection sockets and the development of in-house dynamos.5th Mar 1920Box 31 \ 1  Scan054
Issues with accumulator cells, including terminal leakage and charging difficulties, with proposals for improved dynamo regulation.15th Mar 1920Box 31 \ 1  Scan055
Forwarding and performance testing of an aero type dynamo.19th May 1920Box 31 \ 1  Scan056
Electrical specifications and test results for a Liberty Regulator.9th Jun 1920Box 31 \ 1  Scan057
Cross-reference note for the B.R.C. Dynamo regulator control.22th Jun 1920Box 31 \ 1  Scan058
Experimental investigation and design of a vibrator regulator and cutout for a chassis dynamo.22th Jun 1920Box 31 \ 1  Scan059
Circuit diagram for a combined cut-out and vibrator regulator for a shunt wound chassis lighting dynamo.23th Jun 1920Box 31 \ 1  Scan060
Advantages and disadvantages of a combined cut-out and vibrator regulator.25th Jun 1920Box 31 \ 1  Scan061
Lamp voltages and the design of a vibrator regulator and cutout.25th Jun 1920Box 31 \ 1  Scan062
Preliminary report on investigations into the design and performance of shunt wound dynamos and vibrator regulators.22th Jul 1920Box 31 \ 1  Scan063
Defining standardized volt-ampere relations for testing dynamo performance against an ideal battery.22th Jul 1920Box 31 \ 1  Scan064
Comparison of shunt wound machines, including Bosch, Lucas, Smith, and Bijur, for dynamo performance and design considerations.22th Jul 1920Box 31 \ 1  Scan065
Testing a wind-driven aero dynamo and a 12 Volt Bijur dynamo with combined cutout and regulator.22th Jul 1920Box 31 \ 1  Scan066
The erratic operation of a vibrator regulator on a 12-volt battery and a comparison to its performance on an 8-volt battery.22th Jul 1920Box 31 \ 1  Scan067
Standard volt-ampere characteristic chart for battery and leads during dynamo tests.17th Jun 1920Box 31 \ 1  Scan068
Standard Volt-Ampere characteristics of a battery for Dynamo tests.17th Jun 1920Box 31 \ 1  Scan069
Work on dynamo output regulation and plans for future in-house development.24th Jul 1920Box 31 \ 1  Scan070
Sensitivity and performance of vibrator voltage and current regulators, specifically the Bijur regulator.26th Jul 1920Box 31 \ 1  Scan071
Suitability of a specific type of dynamo regulation for the American-built chassis.26th Jul 1920Box 31 \ 1  Scan072
Instruction sheet detailing the winding of coils on an aero dynamo regulator.13th Aug 1920Box 31 \ 1  Scan073
Technical specifications for an Aero Type Dynamo with Vibrator Regulator.17th Aug 1920Box 31 \ 1  Scan074
Continued description of the construction and operation of a regulator and brush system for an electrical machine.17th Aug 1920Box 31 \ 1  Scan075
Analysis of the characteristics of carbon contacts and their effect on field windings and voltage curves.17th Aug 1920Box 31 \ 1  Scan076
Continued analysis of a vibrator control system, comparing its operation in hot versus cold conditions.17th Aug 1920Box 31 \ 1  Scan077
The steadiness of operation when using carbon contacts versus metal contacts in a control system.17th Aug 1920Box 31 \ 1  Scan078
Hand-drawn wiring diagram for the connections of an Aero Dynamo and Vibrator Regulator.27th Sep 1920Box 31 \ 1  Scan079
Technical review and comparison of an American Bosch Dynamo and a Westinghouse Dynamo.27th Sep 1920Box 31 \ 1  Scan080
Continued report assessing various dynamo machines and their components, including armature and commutator quality.27th Sep 1920Box 31 \ 1  Scan081
Ampere-speed performance curves for an aero-type dynamo with a vibrator regulator.1st Oct 1920Box 31 \ 1  Scan082
Alterations to volt-ampere characteristics for hot and cold conditions.1st Oct 1920Box 31 \ 1  Scan083
Analysis of performance curves and irregularities caused by carbon contacts in a regulator.1st Oct 1920Box 31 \ 1  Scan084
Continued discussion on testing a machine and regulator, focusing on the performance of carbon contacts.1st Oct 1920Box 31 \ 1  Scan085
Table defining the new standard volt-ampere characteristic of battery and leads for dynamo tests.1st Oct 1920Box 31 \ 1  Scan086
Chart showing the special volt-ampere characteristic of a battery and leads for dynamo tests with a vibrator regulator.1st Oct 1920Box 31 \ 1  Scan087
Output-Speed curves for an Aero Type Uā‚‚ wind-driven dynamo, comparing vibrator regulator controlled and uncontrolled performance.1st Oct 1925Box 31 \ 1  Scan088
Blank document with a purple ink stamp from the Print Room.5th Oct 1920Box 31 \ 1  Scan089
Tests on the Smith dynamo, its failure by 'roasting', and comparing it with Lucas and third-brush dynamo systems.5th Oct 1920Box 31 \ 1  Scan090
Continued page from a document discussing dynamo armature plate design and efficiency.1st Oct 1920Box 31 \ 1  Scan091
Dynamo and vibrator regulator experiments, seeking input on field winding design.5th Oct 1920Box 31 \ 1  Scan092
Letter from Dayton Engineering Laboratories Co. describing the operation of their circuit breakers.5th Oct 1920Box 31 \ 1  Scan093
Wiring diagram showing the connections of a Disco Vibrator Regulator and Cut-out.12th Oct 1920Box 31 \ 1  Scan094
Technical memorandum discussing the inspection and features of a vibrator type regulator from an Argo car.25th Oct 1920Box 31 \ 1  Scan095
Principles of a crude apparatus for voltage control in a battery charging circuit.25th Oct 1920Box 31 \ 1  Scan096
Hand-drawn wiring diagram for the connections of a Disco Vibrator Regulator and Cut-out.28th Nov 1933Box 31 \ 1  Scan097
Letter from Rolls Royce of America regarding a Delco circuit breaker and Bakelized canvas insulation for a chassis electrical system.26th Oct 1920Box 31 \ 1  Scan098
Heating tests and control methods for shunt wound dynamos, specifically for the Goshawk project.13th Dec 1920Box 31 \ 1  Scan099
Directions for the adjustment of the 'SCOTT' charging regulator.21th Dec 1920Box 31 \ 1  Scan100
Cover sheet regarding the performances of shunt-wound dynamos suitable for external regulator control.1st Feb 1921Box 31 \ 1  Scan101
Experimental bench investigation of a Westinghouse vibrator regulator with a combined cut-out.2nd Feb 1921Box 31 \ 1  Scan102
Analysis of the dynamo's cut-out regulator windings and their effect on voltage and current at different speeds.2nd Feb 1921Box 31 \ 1  Scan103
Analysis of a voltage regulator's performance concerning the effects of speed and temperature on battery charging.2nd Feb 1921Box 31 \ 1  Scan104
Cessation of experimental work on vibrator regulators for the 40/50 Chassis and Goshawk dynamos.16th Feb 1921Box 31 \ 1  Scan105
Description of the Bleriot-Phi starting and lighting equipment.25th Feb 1921Box 31 \ 1  Scan106
Page describing the construction and output control of a dynamo, including its magnetic circuit and voltage regulation.10th Dec 1920Box 31 \ 1  Scan107
Description of a voltage regulator's operation, including charging an accumulator and managing high-demand electrical devices.10th Dec 1920Box 31 \ 1  Scan108
Page describing the operation of a voltage regulator, dynamo, and charging circuit.10th Dec 1926Box 31 \ 1  Scan109
Page describing voltage regulation, dynamo specifications, and the starter mechanism.10th Dec 1926Box 31 \ 1  Scan110
Technical description of starter motor specifications and the operation of the switchboard.16th Oct 1920Box 31 \ 1  Scan111
Description of the operation and features of the relay switch and the associated earthed return wiring system.10th Dec 1920Box 31 \ 1  Scan112
Page detailing the starter circuit, lamp connections, and the use of independent terminals.10th Dec 1920Box 31 \ 1  Scan113
Hand-drawn circuit diagram for the Bleriot-Phi System.25th Feb 1921Box 31 \ 1  Scan114
Modifications for dynamos on the 40/50 and Goshawk chassis, stopping work on external regulators and adding a third brush.7th Mar 1921Box 31 \ 1  Scan115
Mr. Royce's decision on using controlled machines, particularly dynamos, and outlining next steps for testing, costing, and design.7th Mar 1921Box 31 \ 1  Scan116
Letter from Bleriot Limited justifying the use of a vibrator regulator in their dynamo equipment.8th Mar 1921Box 31 \ 1  Scan117
Page 2 of a typed letter from Bleriot Limited.16th Dec 1920Box 31 \ 1  Scan118
Reliability and control systems of dynamos, and the move away from vibrator regulators.9th Apr 1921Box 31 \ 1  Scan119
Dissatisfaction with dynamo suppliers and recommending Delco for car electrical equipment.4th May 1921Box 31 \ 1  Scan120
Performance of the Bijur starter motor and generator, including battery comparisons.18th May 1921Box 31 \ 1  Scan121
Technical discussion on starter motors, generators, and electrical system performance, comparing R-R, Bijur, and Bosch components.29th Apr 1929Box 31 \ 1  Scan122
Generators, battery charging, and voltage regulator systems, comparing Westinghouse and Bijur components.7th Jun 1921Box 31 \ 1  Scan123
Correspondence regarding electrical systems for the Goshawk II, discussing proposals and component orders.7th Jun 1921Box 31 \ 1  Scan124
Supplier selection for a dynamo and motor for the Goshawk II project.7th Jun 1921Box 31 \ 1  Scan125
Response to U.S.A. complaints regarding batteries running down and the suitability of different dynamo types.8th Jun 1921Box 31 \ 1  Scan126
Vibrator regulators, car export specifications, and issues with leaky Exide battery cells.13th Jun 1921Box 31 \ 1  Scan127
Extract from the minutes of a conference regarding dynamo voltage control and supply arrangements.13th Jun 1921Box 31 \ 1  Scan128
The 4-EX model returned from America, focusing on the Bijur dynamo's reliability and noise issues.17th Jun 1921Box 31 \ 1  Scan129
The automatic and hand-operated charging switches for the 4-EX vehicle.17th Jun 1921Box 31 \ 1  Scan130
Vibrator regulator control of output for limiting the charging current to a battery.28th Nov 1921Box 31 \ 1  Scan131
List of various dynamo output regulators.4th Jan 1922Box 31 \ 1  Scan132
External voltage and current regulators for chassis dynamos, and the definition of 'inherently controlled dynamos'.11th Jan 1922Box 31 \ 1  Scan133
Dynamo fusing systems and the volt-ampere characteristics of 'inherently controlled' dynamos.11th Nov 1922Box 31 \ 1  Scan134
Continued discussion on vehicle electrical system requirements, focusing on battery charging and dynamo performance.3rd Nov 1922Box 31 \ 1  Scan135
Description of the operating principles of an automatic dynamo regulator.3rd Nov 1922Box 31 \ 1  Scan136
Controlling dynamo output for a chassis electrical system using volt-ampere characteristics and external regulators.3rd Nov 1922Box 31 \ 1  Scan137


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