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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).
Status update on design modifications for the Spectre Chassis.

Identifier  ExFiles\Box 30\4\  Scan279
Date  20th September 1934 guessed
  
- 4 -

ITEM SPECTRECodename for Phantom III CHASSIS-CONTINUED. DESIGN POSITION.
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Alternative short duration camshaft and valve springs to suit. Put aside.
Modification to reduce weight of crankshaft. Completed.
Front dumb iron and bumper bracket. Put aside.
Modifications to central web of crankcase to facilitate removal of sand. In hand.
Larger water pump. In hand.
Distribution board without cutout. In hand.
Preliminary investigation of automatic chassis lubrication. Completed.
Carbon Thermoflex gland - water pump. In hand.
Vacuum control for ignition distributors. In hand.
External modifications to cylinder head to facilitate enamelling. In hand.
Lightened valve with spring retaining ring. In hand.
Stronger springs for cross and side steering tube. Completed.
Increased friction in pivots - (plain thrust). Completed.
  
  


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