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
Technical memorandum with annotated sketches discussing design improvements and weight-saving measures for Super Sports pedals.23th Jan 1928West Wittering \ R \ January1928-March1928  25
Induction and exhaust pipe designs for Super Sports models.24th Jan 1928West Wittering \ R \ January1928-March1928  26
Comparison of different manifold pipe designs with engineering notes.24th Jan 1928West Wittering \ R \ January1928-March1928  27
Hand-drawn schematic diagram of a piping or lubrication system for a multi-cylinder engine.9th Jan 1928West Wittering \ R \ January1928-March1928  29
Moving the Autovac to a higher position, away from the exhaust.24th Jan 1928West Wittering \ R \ January1928-March1928  30
Deciding to use the 6 port induction scheme over the 4 port arrangement.21th Jan 1928West Wittering \ R \ January1928-March1928  31
Alternative slotted induction pipe design for EAC. 14, comparing underfed and top feed systems.24th Jan 1928West Wittering \ R \ January1928-March1928  32
Design of exhaust manifolds and pipes for the Super Sports 20HP model.24th Jan 1928West Wittering \ R \ January1928-March1928  33
Blueprint for a slot-type induction pipe.23th Jan 1928West Wittering \ R \ January1928-March1928  34
Technical memorandum discussing the design and manufacture of propeller shaft universal joints.25th Jan 1928West Wittering \ R \ January1928-March1928  35
Two annotated design proposals for a propeller shaft assembly, focusing on oil retention and structural integrity.30th Jan 1928West Wittering \ R \ January1928-March1928  36
Production strategy and body design for the new EAC. 10 sports chassis.30th Jan 1928West Wittering \ R \ January1928-March1928  37
Customer feedback from Lord Curzon on a Phantom vehicle.30th Jan 1928West Wittering \ R \ January1928-March1928  38
Car performance, design philosophy, and comparisons to competitors.30th Jan 1928West Wittering \ R \ January1928-March1928  39
Schedule N. sch. 2541, which details the front anchorage of rear springs, brake carrier levers, and other chassis modifications.31th Jan 1928West Wittering \ R \ January1928-March1928  40
General arrangement of a Servo and Balance Lever, proposing a change from steel to ferodo lining.31th Jan 1928West Wittering \ R \ January1928-March1928  41
Confirmation of a telegram from R. Royce regarding engine dimensions and cylinder construction.31th Jan 1928West Wittering \ R \ January1928-March1928  42
Approving a design for crankshaft oiling and discussing overall car development.6th Feb 1928West Wittering \ R \ January1928-March1928  43
Suggesting the use of a Bostock & Bramley servo worm gear to handle heavy loads.2nd Feb 1928West Wittering \ R \ January1928-March1928  44
Materials and operation of car engine crankshaft dampers, specifically addressing friction surfaces and vibration periods.6th Feb 1928West Wittering \ R \ January1928-March1928  45
Performance and non-skid properties of Dunlop Triple Stud tyres on rough and clay roads.6th Feb 1928West Wittering \ R \ January1928-March1928  46
Faults found with the ignition hand control and magneto advance mechanism.6th Feb 1928West Wittering \ R \ January1928-March1928  47
Experiments on engine mountings and a proposed solution involving a subframe for damping purposes.4th Feb 1928West Wittering \ R \ January1928-March1928  48
Typed note discussing the peculiarities of a scheme involving torque, the clutch, and the chassis frame.9th Jan 1928West Wittering \ R \ January1928-March1928  49
Readiness of a Standard Phantom and the design of a Sports Phantom carburettor.6th Feb 1928West Wittering \ R \ January1928-March1928  50
Correction to a gearbox casting layout, specifically the web carrying the servo bearing.6th Feb 1928West Wittering \ R \ January1928-March1928  51
Requesting the supply of wing stays and step-irons for a Jarvis Body, to be sent with a dummy chassis.9th Feb 1928West Wittering \ R \ January1928-March1928  52
Wind resistance and body modifications for the Continental Phantom.9th Feb 1928West Wittering \ R \ January1928-March1928  53
The status of various components for the E.A.C. 10 Phantom Two vehicle.10th Feb 1928West Wittering \ R \ January1928-March1928  54
Proposed locking mechanism for dipping headlamps and a potential issue with cleaning.11th Feb 1928West Wittering \ R \ January1928-March1928  55
Arrangement of brake differentials, enclosing a schematic and requesting an extra print.13th Feb 1928West Wittering \ R \ January1928-March1928  56
Modifications to the cross in frame for brake gear clearance.3rd Feb 1928West Wittering \ R \ January1928-March1928  57
Choice between Schatz and New Departure bearings, with suggestions for fitting.14th Feb 1928West Wittering \ R \ January1928-March1928  58
With a sketch discussing oil and water sealing methods for bearings.14th Feb 1928West Wittering \ R \ January1928-March1928  59
Design alternatives for a new 6-inch universal joint and propeller shaft, replacing the original 5-inch version.2nd Feb 1928West Wittering \ R \ January1928-March1928  60
Revised pedal support and awaiting further comments before detailing.15th Feb 1928West Wittering \ R \ January1928-March1928  61
Relocating the headlamp dipping lever on a Barker Sports car due to its inconvenient position.16th Feb 1928West Wittering \ R \ January1928-March1928  62
Request to measure the distance between a vehicle's screen and wheel due to a suspected clearance error by the coachbuilder, Hooper's.16th Feb 1928West Wittering \ R \ January1928-March1928  63
Expressing anxiety over delays in preparing two chassis models for trial and outlining the main improvements required.7th Feb 1928West Wittering \ R \ January1928-March1928  64
Manufacturing proposal for a 6-inch universal joint's rings.18th Feb 1928West Wittering \ R \ January1928-March1928  65
Comparison of cross web and diagonal web piston designs, concluding that the diagonal web piston is the superior design for car work.18th Feb 1928West Wittering \ R \ January1928-March1928  66
Suggestions for engine mounting and the use of dampers to reduce vibration.19th Feb 1928West Wittering \ R \ January1928-March1928  67
Effectiveness and design of hydraulic dampers for the Phantom and 20HP models, including a suggested design sketch.22th Feb 1928West Wittering \ R \ January1928-March1928  68
Arguing against a fully automatic charge control system, proposing a simpler, driver-operated alternative.22th Feb 1928West Wittering \ R \ January1928-March1928  69
Modifications to Phantom valve springs due to insufficient clearance.2nd Feb 1928West Wittering \ R \ January1928-March1928  70
Chassis and body modifications for the Continental Phantom EAC.14 to increase interior space.21th Feb 1928West Wittering \ R \ January1928-March1928  71
Viability of Bohnalite steel strut pistons and duralumin connecting rods.21th Feb 1928West Wittering \ R \ January1928-March1928  72
Positioning of the Magneto Drive in relation to the Phantom model.22th Feb 1928West Wittering \ R \ January1928-March1928  73
Blueprints for a crankchamber, covering starter motor mounting stiffness and potential improvements.22th Feb 1928West Wittering \ R \ January1928-March1928  74
Blueprint for a cylinder head, focusing on valve passages, rockers, and gear.22th Feb 1928West Wittering \ R \ January1928-March1928  75
From E. to HS. querying the purpose of a small locating screw on the 20HP valve gear.23th Feb 1928West Wittering \ R \ January1928-March1928  76
Modifications to the Hand Brake Lever Shaft and Equaliser.23th Feb 1928West Wittering \ R \ January1928-March1928  77
The valve gear, suggesting duralumin for rocker bar supports and discussing thermal expansion.2nd Feb 1928West Wittering \ R \ January1928-March1928  78
Starter motor, sending drawing LeC. 2517 and returning drawing LeC. 2496.23th Feb 1928West Wittering \ R \ January1928-March1928  79
Modifications to a starter motor, referencing blueprint LeC. 2517 and a redesigned end cover.23th Feb 1928West Wittering \ R \ January1928-March1928  80
Modifications and improvements for test cars codenamed INDIA 3 and INDIA 4.24th Feb 1936West Wittering \ R \ January1928-March1928  81
On the reliability of the American A.C. petrol pump with a canvas diaphragm, and a suggested alternative design for the Phantom.24th Feb 1928West Wittering \ R \ January1928-March1928  82
Requesting a progress report on a 10,000-mile Phantom experiencing body and fitting issues.24th Feb 1928West Wittering \ R \ January1928-March1928  83
Blueprint for proposed exhaust pipes, including a sketch.25th Feb 1928West Wittering \ R \ January1928-March1928  84
Drawing LeC. 2518 for an exhaust manifold, advising a hold on the project pending feedback.27th Feb 1928West Wittering \ R \ January1928-March1928  85
Letter discussing the feasibility and cost-effectiveness of Fynn-Weichsel design induction motors for factory use.27th Feb 1928West Wittering \ R \ January1928-March1928  86
The general arrangement and component specifications for the 'India 3' car.27th Feb 1928West Wittering \ R \ January1928-March1928  87
Valve gear and rocker shaft deflection compared to the 20HP model.27th Feb 1928West Wittering \ R \ January1928-March1928  88
Design of an 'SS' exhaust pipe, suggesting a more practical and less costly 4-bolted flange.28th Feb 1928West Wittering \ R \ January1928-March1928  89
Proposals for a New Departure bearing and oil retaining devices for a 1' offset hypoid rear axle.28th Feb 1928West Wittering \ R \ January1928-March1928  90
Proposed engine improvements including exhaust, crankshaft, new head, and induction system.28th Feb 1928West Wittering \ R \ January1928-March1928  91
Adjustments and proposed settings for hydraulic dampers on Phantom & 20HP models.28th Feb 1928West Wittering \ R \ January1928-March1928  92
The steadiness and optimal length of the Phantom Sports steering column.1st Mar 1928West Wittering \ R \ January1928-March1928  93
List of required improvements for the 20HP India 3 model's next 10,000-mile test.5th Mar 1928West Wittering \ R \ January1928-March1928  94
Sketch with annotations for a damping scheme to address engine torque vibrations.2nd Mar 1928West Wittering \ R \ January1928-March1928  95
Design and requirements for dipping and turning headlights on 20HP & 40/50 models.3rd Mar 1928West Wittering \ R \ January1928-March1928  96
Proposed modifications for the 20HP India 3 engine and chassis.7th Mar 1928West Wittering \ R \ January1928-March1928  97
On modifying a 20HP car with central oiling and new joints for a 'Super Sports' model.7th Mar 1928West Wittering \ R \ January1928-March1928  98
Modifications and requirements for the cast dash on the 12-EX model.1st Mar 1928West Wittering \ R \ January1928-March1928  99
Query regarding the feasibility of creating a damper with both dry friction and lubrication, similar to a friction clutch.8th Mar 1928West Wittering \ R \ January1928-March1928  100
Pinion, bearings, and oil retention design for a 1' offset hypoid gear, including a clarifying sketch.8th Mar 1928West Wittering \ R \ January1928-March1928  101
Green lamp scheme and charge indicator for 20HP & 40/50 models, including ignition and charge control switch design.5th Mar 1928West Wittering \ R \ January1928-March1928  102
Crankshaft rigidity, with reference to the Stutz shaft and design implications for harmonics.8th Mar 1928West Wittering \ R \ January1928-March1928  103
Outlining design preferences and specifications for the 'SS' propeller shaft.5th Mar 1928West Wittering \ R \ January1928-March1928  104
Ideal size and position for the Phantom steering wheel across different models.5th Mar 1928West Wittering \ R \ January1928-March1928  105
'SS' Propeller Shaft and associated schematics.8th Mar 1928West Wittering \ R \ January1928-March1928  106
Frame modifications and component requirements for the 20HP 'Next 10,000 Miler' model.8th Mar 1928West Wittering \ R \ January1928-March1928  107
Modifications to the gearbox and cross member for a future car model.6th Mar 1928West Wittering \ R \ January1928-March1928  108
Sending drawing LeC. 2520 regarding the Phantom Slipper Flywheel.6th Mar 1928West Wittering \ R \ January1928-March1928  109
EAC.10 & India 3 valve sizes, sending document Lec. 2523.6th Mar 1928West Wittering \ R \ January1928-March1928  110
On a Slipper Flywheel design change to a disc drive arrangement, at the request of the Experimental Department.6th Mar 1928West Wittering \ R \ January1928-March1928  111
Brief memo regarding Camshaft Bearings, sent with an accompanying document.28th Mar 1928West Wittering \ R \ January1928-March1928  112
Material options for camshaft bearings, suggesting piston aluminium alloy or cast iron as alternatives to bronze.6th Mar 1928West Wittering \ R \ January1928-March1928  113
And comparing valve sizes for various engine models, including EAC.10 and India 3.6th Mar 1928West Wittering \ R \ January1928-March1928  114
Investigation into difficulties with the Phantom's in-frame battery, comparing temporary and proper moulded batteries, and assessing accessibility.6th Mar 1928West Wittering \ R \ January1928-March1928  115
Querying the potential causes of bakelite tracking on high-tension ignition parts.7th Mar 1928West Wittering \ R \ January1928-March1928  116
Considerations for engine suspension design, specifically regarding rubber mountings and chassis twist.7th Mar 1928West Wittering \ R \ January1928-March1928  117
Valve gear rocker geometry and an experimental setup on a Phantom engine.7th Mar 1928West Wittering \ R \ January1928-March1928  118
Modified water pump gland for EAC.10, referencing blueprint LeC. 2521.8th Mar 1928West Wittering \ R \ January1928-March1928  119
Drawing for an alternative exhaust pipe joint.8th Mar 1928West Wittering \ R \ January1928-March1928  120
Sending drawing LeC. 2521 regarding water pump glands.8th Mar 1926West Wittering \ R \ January1928-March1928  121
Design change for an 'SS' exhaust pipe to a 4-bolt flange.8th Mar 1928West Wittering \ R \ January1928-March1928  122
Material and design of camshaft bearings.9th Mar 1928West Wittering \ R \ January1928-March1928  123
Confirming agreement on valve bore seat sizes for the 20HP and Phantom models.9th Mar 1928West Wittering \ R \ January1928-March1928  124
Engine suspension, focusing on the flexibility of rubber, alignment, and torsional dampers.13th Mar 1928West Wittering \ R \ January1928-March1928  125
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