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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).
Design position report detailing modifications and their status for the Spectre and Wraith chassis.

Identifier  ExFiles\Box 30\3\  Scan167
Date  17th April 1935 guessed
  
(sheet 4)

ITEM. DESIGN POSITION.

SPECTRECodename for Phantom III CHASSIS - CONTINUED:-

Modified head lamp and wing stay support. Completed.
Modifications to idler and crankcase to suit larger slipper wheel. In hand.
Modifications to connecting rods. Completed.
Improved front ground clearance. In hand.
Variable rating front suspension adapted to unit construction shock dampers. In hand.
Clutch operation modified on the lines of the Wraith clutch. Completed.
Gearbox:- Modifications to washers and nuts for shaft stiffness experiment. Completed.
I.F.W.S. Oil filler for spring pot of expl. progressively rated scheme. Completed.
Modifications to lightening holes in cross. Completed.
Modified front engine mounting:- to suit dynamo driven at 1 1/4 x engine speed. In hand.
Incorporation of hydraulic jack in front suspension. In hand.
Investigation of induction system with downdraught carburetters. In hand.
Hydraulic autolock for rear shock dampers. In hand.

WRAITH CHASSIS.

Front wheel and brake drum. In hand.
Rear shock dampers and stabiliser. In hand.
  
  


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