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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 progress report on Bentley and Spectre chassis components.

Identifier  ExFiles\Box 30\4\  Scan198
Date  1st June 1934 guessed
  
BENTLEY CHASSIS. (2)

ITEM. DESIGN POSITION.

Ignition changeover switch - two coils. In hand.
Modified valve spring bottom washer. Completed.
Front axle - reinforced around mouth of brake shaft tunnel. Completed.
Strengthened front road springs - additional woodhead clips, etc. Completed.
RR and Bosch foot switch fixing - metal floorboards. Completed.
Improved ignition coil. Completed.
Modification to floatchamber sealing pipes. Completed.
Layout of steering geometry - springs shackled at rear. In hand.

SPECTRECodename for Phantom III CHASSIS.

Steering layout. Completed.
Metal floorboards. Completed.
Engine controls. In hand.
Centre mounted radiator and wings. In hand.
Front end of chassis - general arrangement - G.M.Sch. I.F.W.S. Completed.
All helical gear box - castings,gears,actuating mechanism and shafts. Completed.
Dashboard and fittings. In hand.
Investigation of possibilities of using a Marles steering box as alternative to RR.steering box. Completed.
  
  


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