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
Modification to the drilling of front and rear shock damper spindles for centralised chassis lubrication.31th Aug 1927West Wittering \ Q \ July1927-September1927  Scan085
Sourcing and specifications of drip plugs for a centralised chassis lubrication experiment on the Phantom.1st Sep 1927West Wittering \ Q \ July1927-September1927  Scan086
Modification to the Phantom's fan bracket for the centralised chassis lubrication system.1st Sep 1927West Wittering \ Q \ July1927-September1927  Scan087
Centralised chassis lubrication for the hand brake lever.1st Sep 1927West Wittering \ Q \ July1927-September1927  Scan088
Scheme 2461 for the lubrication of the starter epicyclic gear.2nd Sep 1927West Wittering \ Q \ July1927-September1927  Scan089
Modification to the engine front suspension arm for centralised chassis lubrication.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan090
Technical memo comparing rear springing and load calculations for the EAC. 7 and Phantom models.3rd Sep 1927West Wittering \ Q \ July1927-September1927  Scan091
Pricing and design specifications for magnetos and dashboard clocks.2nd Sep 1927West Wittering \ Q \ July1927-September1927  Scan092
Confidential letter from 'R' to 'BJ' discussing two potential strategies for general car and engine improvement.5th Sep 1927West Wittering \ Q \ July1927-September1927  Scan093
Potential improvements to the 20HP model regarding steering, chassis, tyre sizes, and bodywork.5th Sep 1927West Wittering \ Q \ July1927-September1927  Scan094
Secret memo regarding the progress of the frame and engine for the INDIA 3 (20HP) vehicle intended for trial in France.5th Sep 1927West Wittering \ Q \ July1927-September1927  Scan095
Possible inlet air noise on Phantom & 20HP experimental engines due to valve timing.5th Sep 1927West Wittering \ Q \ July1927-September1927  Scan096
Standardization and customer delivery of the Phantom rear wheel and luggage carrier.6th Sep 1927West Wittering \ Q \ July1927-September1927  Scan097
Requesting an update on the standardisation of improved shutter and carburetter controls for the Phantom.6th Sep 1927West Wittering \ Q \ July1927-September1927  Scan098
Testing, manufacturing challenges, cost comparison, and vibration issues of a cast dashboard for Phantom & India models.6th Sep 1927West Wittering \ Q \ July1927-September1927  Scan099
New proposal for centralised chassis lubrication on the Phantom model, focusing on the clutch.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan100
Modifications for the India 3 crankshaft damper and timing gear spring drive.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan101
Design, balance, and characteristics of 'Straight Eight' and 'Hispano Six' engines.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan102
Examination report on the body mounting and floorboard issues of a Hooper Cabriolet de Ville.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan103
The fitting of subframe supports, footboards, and dash brackets, coordinating with the coachbuilder Hooper's.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan104
Confidential memo about a high compression 20HP car with a Windover open touring body being returned to Derby.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan105
Solutions for air valve corrosion in 40HP & 20HP carburettors.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan106
Suggesting an experiment to replace the 20HP wheel carrier's central hexagon bolt with a screw-in handle for easier operation.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan107
Modifications and the status of different sequence starter schemes.1st Sep 1927West Wittering \ Q \ July1927-September1927  Scan108
Two-stage plan for improvements to the 20HP starter.7th Sep 1927West Wittering \ Q \ July1927-September1927  Scan109
Relocation of the starter motor due to a new exhaust scheme and torque-controlled front axle.8th Sep 1927West Wittering \ Q \ July1927-September1927  Scan110
Listing improvements for the Phantom 'Next 10,000 Mile Car'.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan111
List of 16 proposed improvements for the Next 10,000 Miles Phantom model.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan112
Numbered list detailing vehicle modifications and improvements.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan113
The progress of the R-R design of a battery in the frame for the Phantom model.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan114
List of fifteen proposed engineering improvements for the Phantom model.9th Sep 1927West Wittering \ Q \ July1927-September1927  Scan115
List of vehicle modifications and improvements, focusing on component changes and weight reduction.10th Sep 1927West Wittering \ Q \ July1927-September1927  Scan116
Outlining required improvements for the Sports Phantom engine and car.10th Sep 1927West Wittering \ Q \ July1927-September1927  Scan117
Modifications to the Phantom bonnet catch and an observation regarding a 20HP model.10th Sep 1927West Wittering \ Q \ July1927-September1927  Scan118
Performance and design improvements for the Sports Phantom Engine model.10th Sep 1927West Wittering \ Q \ July1927-September1927  Scan119
Query regarding a proposed design for a serrated clutch coupling and lightened flywheel for a Phantom model.12th Sep 1927West Wittering \ Q \ July1927-September1927  Scan120
Instructions for reducing the power of rear brake pull-off springs.12th Sep 1927West Wittering \ Q \ July1927-September1927  Scan121
The replacement of a Phantom clutch design with a new serrated coupling for the 10,000 miles car.12th Sep 1927West Wittering \ Q \ July1927-September1927  Scan122
Pricing, faults, and potential improvements for the Watford Sleeveless Magneto, Type EW.6.12th Sep 1927West Wittering \ Q \ July1927-September1927  Scan123
Body design, weight, and aerodynamics of the 10-EX model, comparing it to competitors and suggesting improvements.13th Sep 1927West Wittering \ Q \ July1927-September1927  Scan124
Clutch improvements for the Phantom and Sports Car models, focusing on simplification and performance enhancements.13th Sep 1927West Wittering \ Q \ July1927-September1927  Scan125
Proposed improvements to battery ignition components, specifically the scrubbing points and the rocker spring.13th Sep 1927West Wittering \ Q \ July1927-September1927  Scan126
New schemes for battery ignition scrubbing points and rocker springs.13th Sep 1927West Wittering \ Q \ July1927-September1927  Scan127
Suspension modifications for a Sports Phantom.15th Sep 1927West Wittering \ Q \ July1927-September1927  Scan128
Outlining specifications and proposed modifications for the Sports Phantom model.15th Sep 1927West Wittering \ Q \ July1927-September1927  Scan129
Potential modifications and weight reductions for vehicle axles, wheels, and engine.15th Sep 1927West Wittering \ Q \ July1927-September1927  Scan130
Design considerations for engine components including the cylinder block, pistons, and crankshaft.15th Sep 1927West Wittering \ Q \ July1927-September1927  Scan131
Design notes on engine valve springs, camshaft timing, and radiator/bonnet details for a Phantom model.15th Sep 1927West Wittering \ Q \ July1927-September1927  Scan132
Modifications to seating positions and the crankcase.16th Sep 1927West Wittering \ Q \ July1927-September1927  Scan133
Response to a complaint from Springfield regarding a want of acceleration, discussing carburetter performance and testing.16th Sep 1927West Wittering \ Q \ July1927-September1927  Scan134
Approving scheme 963 for a sequence starter on the Phantom engine, with notes on exhaust pipe configurations and rejecting scheme 964.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan135
New clutch and clutch brake design intended for use with an integral gearbox.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan136
Design choice between bonnet shutters and 'Phantom' style louvres.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan137
Layout of pipes for a centralised chassis lubrication system.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan138
Drawings for improved battery ignition components, including scrubbing contacts and a contact arm spring.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan139
Proposal for a new cam form for the Sports Phantom using rollerless tappets.17th Sep 1927West Wittering \ Q \ July1927-September1927  Scan140
Proposed modifications to the Sports Phantom engine, including the relocation of the oil pump and alteration of the valve gear.19th Sep 1927West Wittering \ Q \ July1927-September1927  Scan141
Proposed modifications to the Sports Phantom Engine crankchamber.19th Sep 1927West Wittering \ Q \ July1927-September1927  Scan142
Improvements to the Phantom Sports model, focusing on the G.1. damper, crankshaft design, and lighter pistons.20th Sep 1927West Wittering \ Q \ July1927-September1927  Scan143
Letter discussing the strategy for developing and building a body for the 10-EX model.20th Sep 1927West Wittering \ Q \ July1927-September1927  Scan144
Secret memo from 'R.' to 'BJ.' discussing the body construction scheme and engine modifications for a new sports car.20th Sep 1927West Wittering \ Q \ July1927-September1927  Scan145
Chassis improvements through weight reduction and leveraging aero and sports car experience.21th Sep 1927West Wittering \ Q \ July1927-September1927  Scan146
Design and specifications for a new closed car body for 'India 3'.21th Sep 1927West Wittering \ Q \ July1927-September1927  Scan147
Difficult situation with Mr. Royce regarding the Sports Phantom coachbuilding and design details.21th Sep 1927West Wittering \ Q \ July1927-September1927  Scan148
Design modifications for the Phantom's centralised chassis lubrication system.22th Sep 1927West Wittering \ Q \ July1927-September1927  Scan149
Proposed revision to the centralised chassis lubrication system, comparing scheme 2473 with 2445.23th Sep 1927West Wittering \ Q \ July1927-September1927  Scan150
Design for a Phantom lightened crankshaft and G.1. type spring drive.24th Sep 1927West Wittering \ Q \ July1927-September1927  Scan151
Modifications to the Phantom cylinder block and valve gear for a sports chassis.24th Sep 1927West Wittering \ Q \ July1927-September1927  Scan152
Suitability and risks of automatically controlled radiator shutters.24th Sep 1927West Wittering \ Q \ July1927-September1927  Scan153
Complaint about a shivering scuttle and the proposed fitting of a damper.24th Sep 1927West Wittering \ Q \ July1927-September1927  Scan154
Design standardisation for the Phantom rear wheel and luggage carrier.28th Sep 1927West Wittering \ Q \ July1927-September1927  Scan155
Proposal to modify the 20HP slipper flywheel to match the Phantom's design and test new friction materials.29th Sep 1927West Wittering \ Q \ July1927-September1927  Scan156
Testing an experimental Weir type induction pipe for the Phantom engine.29th Sep 1927West Wittering \ Q \ July1927-September1927  Scan157
Technical specifications for an auto switch.1st Dec 1927West Wittering \ R \ 2December1927-February1928  Scan001
On Standard Phantom springing, detailing issues with adopting negative camber front springs and proposing rear suspension modifications.1st Dec 1927West Wittering \ R \ 2December1927-February1928  Scan002
Suspension characteristics and the avoidance of pitching by optimizing the K²/AB ratio and component weight distribution.2nd Dec 1927West Wittering \ R \ 2December1927-February1928  Scan003
Technical memo discussing independent rear suspension and reducing the wheelbase of the Phantom.12th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan004
Operation of the auto switch and its effect on the dynamo and cutout system at high speeds.12th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan005
Auto switch and dynamo characteristics, proposing an investigation into achieving a flatter generator output curve at high speeds.5th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan006
Experimental testing of an auto charge control switch before wider implementation.5th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan007
Comparison and further testing of a Midgley unit against an in-house system.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan008
Power loss tests conducted on the Phantom single downpipe exhaust system.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan009
Power loss tests comparing single and standard manifold exhaust systems.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan010
Summary of findings on a single manifold exhaust system, detailing power loss, heat, noise, and potential modifications.26th Nov 1927West Wittering \ R \ 2December1927-February1928  Scan011
Graph showing power loss to a single outlet exhaust manifold for a Phantom engine, plotting Brake Horsepower against RPM.26th Nov 1927West Wittering \ R \ 2December1927-February1928  Scan012
Blank document page with a purple stamp.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan013
Graph showing power loss to standard exhaust manifolds for the Phantom engine.28th Nov 1927West Wittering \ R \ 2December1927-February1928  Scan014
Graph comparing the power loss of different exhaust systems on a Phantom engine.28th Nov 1927West Wittering \ R \ 2December1927-February1928  Scan015
Graph plotting Brake Horse Power against engine RPM for a Phantom engine to show the power loss with different exhaust manifold setups.30th Nov 1926West Wittering \ R \ 2December1927-February1928  Scan016
Sketch showing an alteration to a Phantom single outlet exhaust manifold.26th Nov 1927West Wittering \ R \ 2December1927-February1928  Scan017
Blank document page with a purple archive stamp.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan018
10,000-mile test on a mushroom type H.T. rotor, proposing a redesign with vanes to prevent corrosion.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan019
Stiffness tests for a 20 HP crankshaft, detailing results and potential design modifications.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan020
Critical speed, big end weight, and the weakness of the 40/50 shaft pins.5th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan021
Experiments determining the reduction in torsional strength of a 20 HP crankshaft during machining operations.5th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan022
Graph showing the results of a torsion test on a 20 HP crankshaft from forging to finished shaft.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan023
The reverse of a document page, with a 'Print Room' stamp from Derby.6th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan024
Preliminary trial of a 2A sequence starter motor fitted to an EAC.7 engine.8th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan025
Issues with disengagement and whirring of helical teeth.9th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan026
Trade-offs of flexible front springs and suspension testing on Phantom and Silver Ghost models.9th Dec 1927West Wittering \ R \ 2December1927-February1928  Scan027
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