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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Letter to Park Ward & Co. Ltd. concerning the all-metal construction and heater/defroster installation for Mr. Sidgreaves' new Wraith III.12th Jan 1939Box 168a \ 4  img108
Letter requesting an elevation drawing of the screen rail showing Lucas wiper components.15th Feb 1939Box 168a \ 4  img109
The despatch of specific parts for chassis 14.B.V.15th Feb 1939Box 168a \ 4  img110
List of material modifications for Bentley Chassis 11.B.V. and 12.B.V.3rd Mar 1939Box 168a \ 4  img111
List of additional parts to be ordered per chassis, including horns, brackets, and a windscreen wiper.3rd Mar 1939Box 168a \ 4  img112
Order for accessories for a Bentley Chassis 4.B.50 named 'CRESTA'.16th May 1939Box 168a \ 4  img113
Required adjustments and replacements for electrical units from car 8.B.V.19th May 1939Box 168a \ 4  img114
The confusion, delay, and trouble in procuring electrical instruments for new experimental cars.20th May 1939Box 168a \ 4  img115
Requesting instruments be made available for Continental chassis 14.B.V. for testing on June 6th.23th May 1939Box 168a \ 4  img116
Specification details for the Silver Ripple model, covering the instrument board and electrical fittings.27th May 1939Box 168a \ 4  img117
Delays with outside suppliers of electrical units and the need to expedite order placement.26th Jun 1939Box 168a \ 4  img118
List of specifications for six Bentley 'Corniche' chassis, comparing English and French models.5th Jul 1939Box 168a \ 4  img119
The instrument specifications for English and French Corniche models and an urgent parts dispatch request.5th Jul 1939Box 168a \ 4  img120
Requesting the removal of a starter motor, ignition coil, and battery from a Buick for examination.11th Jul 1939Box 168a \ 4  img121
Difficulty in obtaining petrol gauges and warning lights due to a supply issue with the makers.11th Jul 1939Box 168a \ 4  img122
Listing outstanding orders for electrical units needed for six Bentley Corniche chassis.14th Jul 1939Box 168a \ 4  img123
Material requirements for six Bentley 'Corniche' chassis, covering tail lamps, number plates, and horns.18th Jul 1939Box 168a \ 4  img124
Chasing an order for various electrical car units and listing the outstanding items.9th Aug 1939Box 168a \ 4  img125
Weight of electrical equipment, specifically headlamps and wiring for various car models.24th Aug 1939Box 168a \ 4  img126
Letter from Joseph Lucas Limited enclosing the specification for the 16 HP Car.23th Oct 1939Box 168a \ 4  img127
Specification page from Joseph Lucas Limited listing various automotive components and parts.23th Oct 1939Box 168a \ 4  img128
From Joseph Lucas Limited regarding vehicle components such as electric wipers and fog lamps.23th Oct 1939Box 168a \ 4  img129
Sourcing of accessories such as wing lamps, heaters, and screen wipers for a Silver Phantom chassis (31.G.7).4th Nov 1939Box 168a \ 4  img130
List of electrical units required for car 31.G.VII, to be ordered from suppliers J. Lucas and Smith.30th Nov 1939Box 168a \ 4  img131
Typed list of required parts including a speedometer cable, lamps, and a battery.30th Nov 1939Box 168a \ 4  img132
Letter from Joseph Lucas Limited discussing the suitability and ongoing development of starter motors, ignition coils, and distributors.9th Nov 1939Box 168a \ 4  img133
Letter from Joseph Lucas Ltd discussing the supply and development of dynamo brackets, regulator units, de-froster units, and sidelamps.9th Nov 1939Box 168a \ 4  img134
Letter to Park Ward & Co. Ltd. regarding the screen wiper and colour finish for a Silver Ripplet car.4th Dec 1939Box 168a \ 4  img135
Letter from Joseph Lucas Limited regarding a Model S.W.4 Screen Wiper with Demister ducts, Dip and Switch Reflectors, and Perspex Headlamp Glasses.6th Dec 1939Box 168a \ 4  img136
Letter from Joseph Lucas Limited regarding the imminent despatch of two pairs of Bentley Wing Lamps.6th Dec 1939Box 168a \ 4  img137
Laboratory advice note regarding modifications and recommendations for an S.W.4 12 Volt Screenwiper.4th Dec 1939Box 168a \ 4  img138
Technical memorandum regarding the most efficient arrangement for ignition coil windings.13th Dec 1939Box 168a \ 4  img139
Analysis of ignition coil wiring configurations and earth systems to optimize output voltage.13th Dec 1939Box 168a \ 4  img140
Letter discussing progress on a screen wiper, special dynamo, Bentley sidelamps, and cabling for trafficators and horns.15th Dec 1939Box 168a \ 4  img141
Letter regarding the supply of special cables for a horn and trafficator and a suggestion for testing an alternative.15th Dec 1939Box 168a \ 4  img142
Letter from a supplier regarding orders for ammeters, cables, grommets, and other parts, citing delays due to war work pressures.4th Jan 1940Box 168a \ 4  img143
Page 2 of a letter from Joseph Lucas Limited regarding the completion of drawings.4th Jan 1940Box 168a \ 4  img144
Letter to A.T. Speedometer Co. Ltd. requesting a sample of a new indirect lighting scheme for instruments.9th Jan 1940Box 168a \ 4  img145
Letter from Joseph Lucas Limited regarding a sample headlamp and special cable.11th Jan 1940Box 168a \ 4  img146
List of recommendations for the electrical components for the Ripplet (2.R.2) car model.5th Feb 1940Box 168a \ 4  img147
List of available special electrical units including dynamos, starter motors, batteries, and distributors.5th Feb 1940Box 168a \ 4  img148
Comparison of the Delco-Remy distributor against the standard R.R. unit for ignition performance on the Wraith model.12th Feb 1940Box 168a \ 4  img149
Energy loss in primary windings and a recommendation for a single lever Delco-Remy distributor.12th Feb 1940Box 168a \ 4  img150
Graph showing the characteristics of a coil using a Delco-Remy distributor, plotting current against speed.18th Jan 1940Box 168a \ 4  img151
Performance graph for distributors showing current versus RPM for single and double lever configurations.18th Jan 1940Box 168a \ 4  img152
List of parts required for the 'Silver Ripplet 2 - R -11' car, detailing part numbers and procurement instructions.12th Feb 1940Box 168a \ 4  img153
Temporary solutions and spare parts for electrical units on the Ripplet 1 H-11 car.14th Feb 1940Box 168a \ 4  img154
Experimental fitting of a Lucas Regulator Cutout unit and a Delco-Remy distributor for the Ripplet class car.19th Feb 1940Box 168a \ 4  img155
Note clarifying the supply and function of dynamo pulleys, noting they act as a fan.19th Feb 1940Box 168a \ 4  img156
Requesting approval to purchase a Radio Analyser from the Western Electric Instrument Co. Ltd.1st Mar 1940Box 168a \ 4  img157
Requesting the electrical specification for Bentley 40 - 4 cylinder units.12th Mar 1940Box 168a \ 4  img158
Weighing parts to be fitted to a Ripplet chassis to obtain an accurate final weight.16th Mar 1940Box 168a \ 4  img159
Requesting the fitting of Lucas electrical components to a B.60 No.2 engine.30th Mar 1940Box 168a \ 4  img160
Requesting the fitting of various Lucas electrical components to a B.60 No.1 engine and changing the battery earth to positive.30th Jul 1940Box 168a \ 4  img161
List of required electrical units and modifications for the B.40 Engine No.1.8th Apr 1940Box 168a \ 4  img162
The non-receipt of units to be fitted to a Bentley 60 No.3 - 9.B.Y. Chassis.2nd Apr 1940Box 168a \ 4  img163
Requesting the creation of a servicing booklet for a rationalized range of chassis with cast iron engines.10th Apr 1940Box 168a \ 4  img164
Electrical specification document for the B60 No. 5 engine.19th Apr 1940Box 168a \ 4  img165
Electrical specification for B60 No.6 engine unit.19th Apr 1940Box 168a \ 4  img166
Parts and drawings list for the L.H. Senior Range dashboard, wiring, distribution board, and regulator components.4th Apr 1940Box 168a \ 4  img167
List of modification instructions and notices continued from a previous page, organized by section.30th Aug 1938Box 168a \ 4  img168
Requesting an order for various electrical units for B.80 engines.10th May 1940Box 168a \ 4  img169
Listing electrical components required for B.60 engines.10th May 1940Box 168a \ 4  img170
Request to obtain electrical parts from Messrs. Lucas for Bentley 40 & 60 models.14th May 1940Box 168a \ 4  img171
Notes on servicing the dynamo at the 15,000-mile interval.15th May 1940Box 168a \ 4  img172
Instructions for the maintenance and testing of the starter motor.15th May 1940Box 168a \ 4  img173
Instructions for checking the MainSwitch and setting the distributor on a 6-cylinder engine.15th May 1940Box 168a \ 4  img174
Instructions for distributor lubrication, timing, and cleaning.15th May 1940Box 168a \ 4  img175
Maintenance instructions for the ignition coil, spark plugs, battery, lamps, and speedometer.15th May 1940Box 168a \ 4  img176
Instructions for troubleshooting instrument drive cables and inspecting other H.T. cables for damage.15th May 1940Box 168a \ 4  img177
List of part instructions for a Left Hand Silver Phantom chassis, noting a change to positive earth wiring.16th May 1940Box 168a \ 4  img178
List of Parts instructions for a Left Hand Silver Phantom chassis, noting a change to positive earth wiring.16th May 1940Box 168a \ 4  img179
Instructions for LOPs on an L.H. Silver Phantom chassis and a notification about a change to positive earth wiring.16th May 1940Box 168a \ 4  img180
Request for a job position summary from test section members due to the suspension of full-time testing.25th May 1942Box 168a \ 4  img181
Request for a drawing of a dynamo and starter motor for the small Myth engine.24th Jul 1940Box 168a \ 4  img182
Letter from Joseph Lucas Limited confirming receipt of an order for 'Roco' Cable Sleeving.7th Feb 1940Box 168a \ 4  img183
Letter from Joseph Lucas Limited regarding a supply issue with 'Roco' sleeving.24th Feb 1940Box 168a \ 4  img184
Order of parts from Messrs. Lucas.16th Jul 1940Box 168a \ 4  img185
Electrical equipment development, comparing three different dynamo models.22th Apr 1941Box 168a \ 4  img186
Performance analysis of a Lucas C45YV dynamo, detailing electrical load calculations for day and night driving.22th Apr 1941Box 168a \ 4  img187
Comparison of Dagonite and standard Bentley batteries, and a review of three starter motor models.22th Apr 1941Box 168a \ 4  img188
The Lucas M45G starter motor and associated starter main switches.22th Apr 1941Box 168a \ 4  img189
Modifications to the standard switch and a review of various distributors, including Delco-Remy and Lucas models.22th Apr 1941Box 168a \ 4  img190
Comparison and specification list of various automotive coils, with a detailed analysis of Lucas coil types.22th Apr 1941Box 168a \ 4  img191
Issues and solutions for speedometer drives, clocks, and trafficators.22th Apr 1941Box 168a \ 4  img192
Improvements and findings related to trafficators, general wiring, and H.T. cables.22th Apr 1941Box 168a \ 4  img193
Tests and decisions on the switch box, regulator, and ammeter for new cars.22th Apr 1941Box 168a \ 4  img194
Review and comparison of different dynamo models for electrical equipment development.22th Apr 1941Box 168a \ 4  img195
Analysis of dynamo performance and electrical load calculations for daylight and darkness conditions.22th Apr 1941Box 168a \ 4  img196
Report comparing specifications for different batteries and starter motors, focusing on weight, capacity, and dimensions.22th Apr 1941Box 168a \ 4  img197
The Lucas M45G motor rubber drive and an evaluation of various starter main switches.22th Apr 1941Box 168a \ 4  img198
Technical report on modifications to switches and a review of various distributor units.22th Apr 1941Box 168a \ 4  img199
Comparison of various ignition coils, including Delco and Lucas types, with a focus on reliability and design weaknesses.22th Apr 1941Box 168a \ 4  img200
Issues and solutions for speedometer drives, clocks, and trafficators.22th Apr 1941Box 168a \ 4  img201
Technical report discussing issues and solutions for trafficators, general wiring, and H.T. cables.22th Apr 1941Box 168a \ 4  img202
The testing and adoption of a Rover type switchbox, Lucas regulator, and Lucas ammeter.22th Apr 1941Box 168a \ 4  img203
Visit to Lucas to source electrical components for the Meteor and Myth projects.8th May 1941Box 168a \ 4  img204
Letter to Joseph Lucas Ltd. discussing post-war electrical equipment, specifically combined control and fuse boxes.15th Aug 1941Box 168a \ 4  img205
Modifications to the ignition system's ballast resistance for a 10,000-mile chassis test.8th Jun 1926Box 168a \ 5  img001
Request for an analysis of a sample Remy ballast resistance wire and a sample R.R. ballast resistance wire.14th Jun 1926Box 168a \ 5  img002


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