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 The Packless Gland Co. Ltd. regarding the rating and fluid compatibility of bellows for a cooling system.14th Apr 1934Box 4 \ 1  01-page048
Schematic for an automatic starting and warming-up control for horizontal carburettors, including a vapour pressure graph.17th Jul 1939Box 4 \ 1  01-page049
Letter from The Packless Gland Co. Ltd. acknowledging a letter and advising a full reply will follow shortly.17th Apr 1934Box 4 \ 1  01-page050
Letter from The Packless Gland Co. Ltd. correcting previous data regarding their No. 2 bellows.24th Apr 1934Box 4 \ 1  01-page051
Letter discussing the physics and design recommendations for using larger diameter bellows, referencing drawing number LEC.3835.24th Apr 1934Box 4 \ 1  01-page052
Page 3 of a letter from The Packless Gland Co. Ltd. discussing bellows and mercury-filled devices.30th Apr 1934Box 4 \ 1  01-page053
Listing designs sent for the Spectre Chassis.30th Apr 1934Box 4 \ 1  01-page054
Letter to The Packless Gland Co. Ltd. enclosing document LEC.3898 showing larger bellows for comment.3rd May 1934Box 4 \ 1  01-page055
Listing drawings sent regarding the 'Spectre' project.12th Mar 1934Box 4 \ 1  01-page056
Listing drawings for the 'Spectre' project, including steering, dashboard, and bonnet components.2nd Jun 1934Box 4 \ 1  01-page057
Required modification to the damper governor casing for the Spectre's speedometer drive.2nd Jun 1934Box 4 \ 1  01-page058
Dispatch of a drawing for a stabiliser at the rear of the chassis for the Spectre model.4th Jun 1934Box 4 \ 1  01-page059
The design of the Spectre side spare wheel carrier, with suggestions for improvement.5th Jun 1934Box 4 \ 1  01-page060
New front engine mounting scheme (LeC.3954) for the Spectre Engine.8th Jun 1934Box 4 \ 1  01-page061
Drawing for a diaphragm type petrol tap for the Spectre project.13th Jun 1934Box 4 \ 1  01-page062
Omission of the locking method for a bearing retaining nut on the Spectre rear hub.16th Jun 1934Box 4 \ 1  01-page063
Drawings for the Spectre project, including details about new standard frame pieces.16th Jun 1934Box 4 \ 1  01-page064
Drawings for the 'Spectre' project, detailing modifications to radiator and engine components.21th Jun 1934Box 4 \ 1  01-page065
Listing drawings sent regarding the 'Spectre' project, detailing parts for the radiator, starting handle, and throttle.26th Jun 1934Box 4 \ 1  01-page066
Modification to the control for the 'Spectre' damper governor, using an Aerons cable.27th Jun 1934Box 4 \ 1  01-page067
Use of smaller diameter cables for the Spectre chassis.28th Jun 1934Box 4 \ 1  01-page068
The Spectre Design, attaching a list of schemes applicable to the 'Y' section.28th Jun 1934Box 4 \ 1  01-page069
List of scheme drawings for the Spectre Design 'F' Section, detailing frames and fittings.28th Jun 1934Box 4 \ 1  01-page070
Index page listing scheme drawings and modifications for vehicle components like frames, fittings, and springs.28th Jun 1934Box 4 \ 1  01-page071
Index page listing vehicle components, their section numbers, and applicable scheme or drawing numbers.28th Jun 1934Box 4 \ 1  01-page072
Index page listing scheme drawings applicable to various vehicle sections.28th Jun 1934Box 4 \ 1  01-page073
Index page listing sections and schemes for shock dampers, axle control, horns, tools, and spares.29th Jun 1934Box 4 \ 1  01-page074
Spectre Engine, comparing compression ratios with the Cadillac 16 and considering alternative timing proposals.29th Jun 1934Box 4 \ 1  01-page075
Spectre engine's compression ratio and valve timing in comparison to a Cadillac engine.25th Jun 1934Box 4 \ 1  01-page076
Engine development for the Spectre model, detailing a new camshaft design and comparing piston types.25th Jun 1934Box 4 \ 1  01-page077
Material changes for the Spectre Engine, specifically push rods, tappet blocks, and connecting rods.27th Jun 1934Box 4 \ 1  01-page078
Cover letter for a list showing completed design work on the 'S' Section of the Spectre engine.28th Jun 1934Box 4 \ 1  01-page079
List of Spectre Design 'E' Section components with their section numbers and applicable scheme drawings.28th Jun 1934Box 4 \ 1  01-page080
Index of scheme drawings applicable to various engine component sections.28th Jun 1934Box 4 \ 1  01-page081
Index page listing scheme drawings for various engine components.28th Jun 1934Box 4 \ 1  01-page082
Index page listing technical sections and their corresponding scheme drawing numbers.28th Jun 1934Box 4 \ 1  01-page083
Index page listing scheme drawings applicable to various component sections.28th Jun 1934Box 4 \ 1  01-page084
List of scheme drawings applicable to various vehicle sections.29th Jun 1934Box 4 \ 1  01-page085
Attaching a list of design schemes for the Spectre Design, applicable to 'G' Section.29th Jun 1934Box 4 \ 1  01-page086
Index of scheme drawings for the 'Spectre' design 'G' section, covering the flywheel, clutch, and gearbox.29th Jun 1934Box 4 \ 1  01-page087
List of vehicle components and their corresponding scheme drawing numbers.29th Jun 1934Box 4 \ 1  01-page088
Index of scheme drawings applicable to various vehicle sections such as axles and brakes.29th Jun 1934Box 4 \ 1  01-page089
Index of scheme drawings for servo motor and independent front suspension components.29th Jun 1934Box 4 \ 1  01-page090
Referencing a scheme drawing for lubricating the steering column, frame and pivots.29th Jun 1934Box 4 \ 1  01-page091
Spectre Design, attaching a list of design schemes for the 'U' Section.29th Jun 1934Box 4 \ 1  01-page092
List of components and applicable scheme drawings for the Spectre Design 'D' Section.29th Jun 1934Box 4 \ 1  01-page093
List of vehicle components with corresponding section numbers and applicable scheme drawings.29th Jun 1934Box 4 \ 1  01-page094
Index of scheme drawings for various vehicle electrical components.29th Jun 1934Box 4 \ 1  01-page095
Announcing the completion of the 'Spectre' engine and its readiness for a test bed run.29th Jun 1934Box 4 \ 1  01-page096
Secret memo from 'Sg' to 'Hs' arranging to view the completed Spectre engine on the test bed in Derby.2nd Jul 1934Box 4 \ 1  01-page097
Mock-up of the 'Spectre' model, including the frame, bodywork, and novel independent front suspension.2nd Jul 1934Box 4 \ 1  01-page098
Delay in the production of frames for the Spectre Chassis.3rd Jul 1934Box 4 \ 1  01-page099
The initial running and endurance test of the Spectre Engine Unit, detailing performance and observed faults.12th Jul 1934Box 4 \ 1  01-page100
Performance graph for the Spectre No. 1 unit engine, plotting BHP and MEP against RPM.24th Apr 1940Box 4 \ 1  01-page101
Blueprint detailing modifications to the Spectre Piston, showing an additional sawcut and diametrical drop measurements.1st Jan 1940Box 4 \ 1  01-page102
List of ground clearance measurements for the 'Spectre' model under full load conditions.5th Sep 1934Box 4 \ 1  01-page103
Increasing vehicle ground clearance for the Spectre model.13th Sep 1934Box 4 \ 1  01-page104
Comparison table of ground and buffer clearance measurements for Spectre, Essex 6, and Cadillac models.12th Sep 1934Box 4 \ 1  01-page105
Requesting the rebuild of the 'Spectre' car with new parts and re-fitting the wings.17th Sep 1934Box 4 \ 1  01-page106
Request for modifications to the 'Spectre' suspension links and steering ratio.19th Sep 1934Box 4 \ 1  01-page107
Requested modifications for the 'Spectre' car, including clutch, brake, and servo adjustments.19th Sep 1934Box 4 \ 1  01-page108
Listing a tabulated order of importance for various parts required for the Spectre project.21th Sep 1934Box 4 \ 1  01-page109
List of tests to be carried out on the Spectre engine upon its return to the test bed.21th Sep 1934Box 4 \ 1  01-page110
List of notes and issues related to the 'Spectre' engine.21th Sep 1934Box 4 \ 1  01-page111
List of modifications for the 'Second Spectre'.21th Sep 1934Box 4 \ 1  01-page112
List of modifications and investigations pertaining to a vehicle chassis.28th Sep 1934Box 4 \ 1  01-page113
Design alterations for the second 'Spectre' chassis, focusing on the engine unit.28th Sep 1934Box 4 \ 1  01-page114
List detailing the design status and modifications for various engine components.28th Sep 1934Box 4 \ 1  01-page115
Progress report on design modifications for various engine and chassis components.28th Sep 1934Box 4 \ 1  01-page116
Status report on design and development items including clutch, brakes, steering, and ground clearance.28th Sep 1934Box 4 \ 1  01-page117
Design alterations for the Spectre 2nd Chassis, focusing on engine unit modifications.28th Sep 1934Box 4 \ 1  01-page118
Status report on the design and modification of various engine components.28th Sep 1934Box 4 \ 1  01-page119
List of design modifications and updates for engine and chassis components.28th Sep 1934Box 4 \ 1  01-page120
Technical progress report on vehicle components including clutch, axle, brakes, steering, and ground clearance.28th Sep 1934Box 4 \ 1  01-page121
Five modifications to be carried out on the Spectre while it is in the shop.2nd Oct 1934Box 4 \ 1  01-page122
Listing modifications for the Spectre Car after tests on the La Salle steering.3rd Oct 1934Box 4 \ 1  01-page123
Recently completed designs for a distribution board and cut-out unit for the Second Spectre Chassis.4th Oct 1934Box 4 \ 1  01-page124
Progress report on the Spectre chassis engine unit, detailing tests and modifications to components.9th Oct 1934Box 4 \ 1  01-page125
Road test findings for a vehicle's exhaust, ignition, and steering systems.9th Oct 1934Box 4 \ 1  01-page126
Development issues and recommendations for steering, engine smoothness, transmission, gearbox, and clutch systems.9th Oct 1934Box 4 \ 1  01-page127
The development and testing of vehicle brakes, accessibility, and suspension systems.9th Oct 1934Box 4 \ 1  01-page128
Report discussing the radiator grille, ground clearance, and tyre sizes, comparing them to Cadillac and Bentley models.9th Oct 1934Box 4 \ 1  01-page129
Induction, exhaust, and fan noise levels, with a comparison to the Phantom model.9th Oct 1934Box 4 \ 1  01-page130
Progress report on the 'Spectre' car's road work and steering improvements, with comparisons to Cadillac and Phantom models.9th Oct 1934Box 4 \ 1  01-page131
Specification for the build of the second Spectre Car, detailing engine unit components.11th Oct 1934Box 4 \ 1  01-page132
List of required modifications and specifications for a vehicle chassis.11th Oct 1934Box 4 \ 1  01-page133
Specifications for a fabric coupling, car appearance, and wheels.11th Oct 1934Box 4 \ 1  01-page134
Secret memo regarding the 'Spectre' car, discussing the resolution of steering shocks and a future trial.12th Oct 1934Box 4 \ 1  01-page135
10-point programme of work for the Spectre vehicle.19th Oct 1934Box 4 \ 1  01-page136
Spectre engine unit detailing a failed big end bearing, piston knocks, tappet clearances and requests for modifications.22th Oct 1934Box 4 \ 1  01-page137
Lubrication of 'Spectre' engine big ends following a breakdown on the test bed.25th Oct 1934Box 4 \ 1  01-page138
Slow running (idling) issues with the Spectre engine and experiments to resolve them.27th Oct 1934Box 4 \ 1  01-page139
Big end trouble with cracked lead bronze bearings during an endurance test.27th Oct 1934Box 4 \ 1  01-page140
Comparison table of ground clearance measurements for various car models.29th Oct 1934Box 4 \ 1  01-page141
Modifications for the Spectre model to improve ground clearance, referencing drawing LeC.4147.30th Oct 1934Box 4 \ 1  01-page142
List of required jobs and investigations for the Spectre model before it goes into the workshop again.1st Nov 1934Box 4 \ 1  01-page143
Proposed instrument arrangements for the second Spectre chassis, indicating a preference for scheme B.3rd Nov 1934Box 4 \ 1  01-page144
Requesting the measurement of castor angle on a Spectre No. 2 chassis.5th Nov 1934Box 4 \ 1  01-page145
Instruction to fit a negative overlap camshaft to Spectre No. 1 Unit during a rebuild.6th Nov 1934Box 4 \ 1  01-page146
Ground clearance issues for the Spectre model compared to the Phantom and a Cadillac.7th Nov 1934Box 4 \ 1  01-page147


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