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
Mr. Royce's approval for spherical seated unions, raising a question about the washer and thread design.1st Jan 1927West Wittering \ Q \ January1927-March1927  33
Return of an automatic charge reducing switch following an inspection.12th Jan 1927West Wittering \ Q \ January1927-March1927  34
Optimal radiator tube dimensions for the 40/50 model, considering diameter, length, and airflow.14th Jan 1927West Wittering \ Q \ January1927-March1927  35
Design modification for the Phantom exhaust cutout, deleting the front spring.15th Jan 1927West Wittering \ Q \ January1927-March1927  36
Design changes and reasoning for engine components like cams, rockers, and cylinder blocks.9th Jan 1927West Wittering \ Q \ January1927-March1927  37
Proposed modifications to the 40/50 bonnet and radiator design.15th Jan 1927West Wittering \ Q \ January1927-March1927  38
Alterations to a spare wheel and luggage carrier design.17th Jan 1927West Wittering \ Q \ January1927-March1927  39
Technical comparison of Bosch and Delco-Remy contact breakers, focusing on the angular off-set of the pad.17th Jan 1927West Wittering \ Q \ January1927-March1927  40
Report comparing ignition system components, including contact pressures and a diagram of an 'umbrella' rotor.18th Jan 1927West Wittering \ Q \ January1927-March1927  41
Sending schedules for a rear wheel carrier, luggage grid, and special dumbiron.18th Jan 1927West Wittering \ Q \ January1927-March1927  42
Modification to the petrol tank filter fitting.18th Jan 1927West Wittering \ Q \ January1927-March1927  43
Design and operation of a new cutout mechanism, contrasting it with the Phantom model.20th Jan 1927West Wittering \ Q \ January1927-March1927  44
The dispatch of unfinished schedules for a rear wheel carrier and luggage grid for safekeeping.20th Jan 1927West Wittering \ Q \ January1927-March1927  45
Sending a scheme for a tool box on the running-board of car EAC.7.21th Jan 1927West Wittering \ Q \ January1927-March1927  46
Wings, valances, and lamps for the coachwork of car E.A.C.7.1st Jan 1927West Wittering \ Q \ January1927-March1927  47
Importance of research into white metal anti-friction materials to avoid being beaten by foreign competitors.25th Jan 1927West Wittering \ Q \ January1927-March1927  48
Suggestions for improving the lifespan of battery ignition contact points for Phantom, 20HP, and Silver Ghost models.25th Jan 1927West Wittering \ Q \ January1927-March1927  49
Ignition contact materials, cam action, and potential distributor improvements.27th Jan 1927West Wittering \ Q \ January1927-March1927  50
Confidential memo discussing the specifications and sourcing of magnetos for 40/50 and 20HP models.27th Jan 1927West Wittering \ Q \ January1927-March1927  51
Design improvements for the rear luggage grid, wheel mounting, and dumb-irons.27th Jan 1927West Wittering \ Q \ January1927-March1927  52
Delivery of front wings and valances, including plans for a toolbox.25th Jan 1927West Wittering \ Q \ January1927-March1927  53
Appearance of an integral radiator based on N. schemes 2346 and 2350.25th Jan 1927West Wittering \ Q \ January1927-March1927  54
Modifications to radiator design with integral shutters and comparing front area efficiency across various car series.25th Jan 1927West Wittering \ Q \ January1927-March1927  55
Analysis of radiator cooling performance based on changes to matrix and tube dimensions.28th Jan 1927West Wittering \ Q \ January1927-March1927  56
Design progress and potential modifications for a new automatic starter motor switch unit.28th Jan 1927West Wittering \ Q \ January1927-March1927  57
Promising a scheme for squeak dampers on 20HP front brakes.28th Jan 1927West Wittering \ Q \ January1927-March1927  58
Noise issue related to the Phantom carburetter's throttle closed angle.31th Jan 1927West Wittering \ Q \ January1927-March1927  59
Design of contact makers and exhaust valves for battery ignition systems.31th Jan 1927West Wittering \ Q \ January1927-March1927  60
Design notes with sketches discussing damping friction on a pivot and the longevity of magneto contact points.28th Jan 1927West Wittering \ Q \ January1927-March1927  61
Revisions to a radiator and bonnet, referencing a print and proposing the creation of a physical model.28th Jan 1927West Wittering \ Q \ January1927-March1927  62
Modifications to the 20HP vertical radiator shutters and steering column controls.28th Jan 1927West Wittering \ Q \ January1927-March1927  63
Modifications to the Phantom radiator schedule and dimensions.28th Jan 1927West Wittering \ Q \ January1927-March1927  64
The design, manufacture, and sourcing of toolboxes for the EAC.7 car.1st Feb 1927West Wittering \ Q \ January1927-March1927  65
Advantages and considerations of hydraulic steering damping.1st Feb 1927West Wittering \ Q \ January1927-March1927  66
Importance of weight reduction in the 40/50 and 20HP car models for performance, running costs, and legal compliance.4th Feb 1927West Wittering \ Q \ January1927-March1927  67
The failure of a poorly designed two-piece gear change speed shaft.4th Feb 1927West Wittering \ Q \ January1927-March1927  68
Customer satisfaction with a trials car and proposed improvements to the Phantom & 20HP models.4th Feb 1927West Wittering \ Q \ January1927-March1927  69
Proposal for modifying the steering shock damper to facilitate shunting by cutting it out on extreme locks.1st Feb 1927West Wittering \ Q \ January1927-March1927  70
Instructions for testing an off-set contact arm for ignition contact makers.1st Feb 1927West Wittering \ Q \ January1927-March1927  71
Internal memorandum discussing the design modifications and specifications for the Phantom radiator and bonnet.2nd Feb 1927West Wittering \ Q \ January1927-March1927  72
Design of a battery ignition contact arm and a disc type H.T. rotor.4th Feb 1927West Wittering \ Q \ January1927-March1927  73
Modifications to radiator and bonnet proportions, referencing several design schemes and the creation of a wooden model.3rd Feb 1937West Wittering \ Q \ January1927-March1927  74
Change gear lever failure, concluding it's a minor issue and requesting larger taper pins for a more secure fix.12th Feb 1927West Wittering \ Q \ January1927-March1927  75
Off-set angle of a battery and magneto contact breaker for various models.12th Feb 1927West Wittering \ Q \ January1927-March1927  76
Preliminary lightening of the Phantom engine components like the waterpipe and flywheel, and improving the induction system.14th Feb 1927West Wittering \ Q \ January1927-March1927  77
Potential improvements and experimental trials for a steering system.14th Feb 1927West Wittering \ Q \ January1927-March1927  78
Design improvements for the Phantom radiator and bonnet, focusing on integral shutters and dimensional changes.14th Feb 1927West Wittering \ Q \ January1927-March1927  79
Design modifications to a radiator and bonnet for a specific model.11th Feb 1927West Wittering \ Q \ January1927-March1927  80
Responding to criticisms of a starter motor design, focusing on bearing lubrication and assembly.11th Feb 1927West Wittering \ Q \ January1927-March1927  81
Design modifications and accessibility of a starter motor and its components.14th Feb 1927West Wittering \ Q \ January1927-March1927  82
Proposed modifications to steering column controls for the 20HP Vertical Shutters model.14th Feb 1927West Wittering \ Q \ January1927-March1927  83
Proposed sheet metal stop for the Phantom's front brake differential.14th Feb 1927West Wittering \ Q \ January1927-March1927  84
Front axle track, wheel lean, and tyre pressure for the 10-EX model.15th Feb 1927West Wittering \ Q \ January1927-March1927  85
Proposed simple indicator for car battery charging levels to prevent over-charging.18th Feb 1927West Wittering \ Q \ January1927-March1927  86
Increasing the bearing area and improving lubrication for hydraulic shock dampers.15th Feb 1927West Wittering \ Q \ January1927-March1927  87
From AJS to EFC requesting specifications for stranded copper flexible wire for an automatic switch unit.15th Feb 1927West Wittering \ Q \ January1927-March1927  88
Request for the manufacture of a central bolt and fittings for a spare wheel carrier for car 10-EX.16th Feb 1927West Wittering \ Q \ January1927-March1927  89
Different arrangements for fitting vertical radiator shutters to a 10,000 miles test car.16th Feb 1927West Wittering \ Q \ January1927-March1927  90
Proposal for a variable hydraulic shock damper system, controllable by the driver or automatically.19th Feb 1927West Wittering \ Q \ January1927-March1927  91
Technical memo discussing the angular off-set of the contact breaker arm for battery ignition systems.17th Feb 1927West Wittering \ Q \ January1927-March1927  92
Pull-off spring for the Phantom's front axle and brakes, comparing stress loads.19th Feb 1927West Wittering \ Q \ January1927-March1927  93
Various carburetter combinations to improve engine power and consumption for the Phantom model.24th Feb 1927West Wittering \ Q \ January1927-March1927  94
Advocating for the use of tungsten points for battery ignition, citing lower cost and other practical advantages.24th Feb 1927West Wittering \ Q \ January1927-March1927  95
Lightening of the Phantom clutch and flywheel, proposing a serrated coupling.21th Feb 1927West Wittering \ Q \ January1927-March1927  96
Alternative methods for centralised chassis lubrication on the front axle.22th Feb 1927West Wittering \ Q \ January1927-March1927  97
Proposed arrangement for a squeak damper on the front brakes of a 10,000-mile 20HP car.22th Feb 1927West Wittering \ Q \ January1927-March1927  98
The repeated failure of a Phantom Induction Pipe and a proposed solution.22th Feb 1927West Wittering \ Q \ January1927-March1927  99
Instructions and diagrams for modifications to an induction pipe and its connection.23th Feb 1927West Wittering \ Q \ January1927-March1927  100
Alternatives for fitting a raised radiator and bonnet to car EAC. 7 due to the body being already finished.23th Feb 1927West Wittering \ Q \ January1927-March1927  101
Design, materials, and interchangeability of battery ignition contact breaker points.23th Feb 1927West Wittering \ Q \ January1927-March1927  102
Fitting Hartford shock dampers to the front axle of a 10-EX vehicle.25th Feb 1927West Wittering \ Q \ January1927-March1927  103
Options for reducing the thickness of the Phantom radiator.26th Feb 1927West Wittering \ Q \ January1927-March1927  104
Outlining requirements for magnetos for a 20HP non-sleeve type engine and asking about compatibility with a jump spark distributor.26th Feb 1927West Wittering \ Q \ January1927-March1927  105
Introduction of an umbrella rotor for the standard chassis battery ignition system.26th Feb 1927West Wittering \ Q \ January1927-March1927  106
Design and winding mechanism for car clocks, including a small diagram.26th Feb 1927West Wittering \ Q \ January1927-March1927  107
Modification to the Phantom's side carrier for artillery wheels to prevent noise.28th Feb 1927West Wittering \ Q \ January1927-March1927  108
Modifications to the Phantom's combined wheel and luggage carrier.28th Feb 1927West Wittering \ Q \ January1927-March1927  109
Performance and continued experimentation of Phantom and Pedestal type pistons.28th Feb 1927West Wittering \ Q \ January1927-March1927  110
Requesting design confirmation for a Phantom direct drive flywheel starter automatic switch unit.3rd Mar 1927West Wittering \ Q \ January1927-March1927  111
Requesting comparative test results for New Departure type thrust bearings.4th Mar 1927West Wittering \ Q \ January1927-March1927  112
Design improvements and standardisation for spare wheel carriers, luggage carriers, and step-irons on Phantom and Goshawk models.7th Mar 1927West Wittering \ Q \ January1927-March1927  113
The proposed arrangement of combined Hartford and hydraulic dampers on the front axle for high-speed cars.4th Mar 1927West Wittering \ Q \ January1927-March1927  114
Sending original drawings for 20HP controls and delaying work.4th Mar 1927West Wittering \ Q \ January1927-March1927  115
Diagrammatic sketches for a provisional patent on hydraulic dampers with variable pressure.4th Mar 1927West Wittering \ Q \ January1927-March1927  116
Modifications to Phantom pistons to address knocking issues, proposing lengthening the cylinder skirt and using hollow top pistons.1st Mar 1927West Wittering \ Q \ January1927-March1927  117
Failure of Phantom step-irons due to rough roads and weight, proposing several cures.8th Mar 1927West Wittering \ Q \ January1927-March1927  118
And proposing modifications for the 20HP model controls with vertical shutters.3rd Mar 1927West Wittering \ Q \ January1927-March1927  119
Outlining the key requirements and design philosophy for hydraulic shock dampers.8th Mar 1927West Wittering \ Q \ January1927-March1927  120
Modifications to the Phantom clutch, specifically the adoption of a serrated coupling and material choices for hardening.6th Mar 1927West Wittering \ Q \ January1927-March1927  121
Potential improvements and possibilities for steering systems, including geometry, damping, and new mechanisms.6th Mar 1927West Wittering \ Q \ January1927-March1927  122
Steering geometry troubles and potential modifications.8th Mar 1927West Wittering \ Q \ January1927-March1927  123
Proposal for alterations to a Phantom induction pipe and exhaust jacketed feed pipe to fix a creeping issue.8th Mar 1927West Wittering \ Q \ January1927-March1927  124
Proposed housing and position for the jack and pump accessories.8th Mar 1927West Wittering \ Q \ January1927-March1927  125
Design review memo for a Phantom's direct flywheel geared starter switch unit, with a sketch and improvement suggestions.10th Mar 1927West Wittering \ Q \ January1927-March1927  126
Hand-drawn sketches and typed/handwritten notes for a component design.12th Mar 1927West Wittering \ Q \ January1927-March1927  127
Technical memorandum discussing improvements to battery ignition systems, contact makers, and cam designs.12th Mar 1927West Wittering \ Q \ January1927-March1927  128
Braking performance, axle rigidity, and damping issues, comparing them to the 20HP and 40/50 models.17th Mar 1927West Wittering \ Q \ January1927-March1927  129
Technical memorandum proposing stronger and stiffer designs for vehicle step-irons.11th Mar 1927West Wittering \ Q \ January1927-March1927  130
Suggestions and experiments for improving steering geometry.12th Mar 1927West Wittering \ Q \ January1927-March1927  131
Methods, costs, and urgency of proposed modifications to a worm gear, roller bearing throttle, and 20HP steering system.12th Mar 1927West Wittering \ Q \ January1927-March1927  132
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