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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).
List of design modifications and their current status for the Spectre Chassis.

Identifier  ExFiles\Box 30\3\  Scan166
Date  17th April 1935 guessed
  
(sheet 3)

ITEM. DESIGN POSITION.

SPECTRECodename for Phantom III CHASSIS.

Cylinder head modifications. In hand.
Layout of cabriolet de ville. Abandoned.
Relay operated change gear control. In hand.
Gearbox:- mods to reduce cost of manufacture. In hand.
Gearbox:- casing mods. to take larger bearings for Cadillac 45º gears. In hand.
Gearbox:- modification to actuation to suit 2" shorter gear change lever. In hand.
Gearbox:- permanent scheme for ball bearings for existing SpectreCodename for Phantom III gears. In hand.
Lighter steering wheel and improved appearance of controls. In hand.
Air cooled dynamo:- 1 1/4 times engine speed. In hand.
Modifications to carburetters. In hand.
Automatic mixture control. Put aside.
Provision for supporting rear of engine when clutch is dismantled. In hand.
Complete revision of body mounting, including chassis frame revision. In hand.
Modified throttle controls. In hand.
  
  


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