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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 status for the Phantom III chassis.

Identifier  ExFiles\Box 161a\4\  scan0102
Date  5th August 1936
  
ITEM. DESIGN POSITION.
PHANTOM III CHASSIS - CONTINUED.
Mod. to steam valve base. Completed 4.8.36.
Mods. to equaliser support bracket to improve sealing of felt ring. In hand.
Petrol pumps mounted on R.H. frame member. Completed 10.7.36.
Mods. to front wings for greater suspension clearance. Completed 10.7.36.
Mods. to Stromberg carburetter (jet caps and float spindle). Completed 10.7.36.
Modified cylinder head end covers - for improved coolant flow. Completed 10.7.36.
4 ring piston with ring stops. Completed 15.7.36.
2" wider dashboard and bonnet. Completed 27.7.36.
Improved oil feed to push rod cup. In hand.
3 ring piston with stops. In hand.
Instruction plate re cleaning of engine oil filters. In hand.
Improved cooling to cylinder head. In hand.
Indicator for synchronising ignition contact breakers. Completed 5.8.36.
Resistance for instrument board lights. In hand.
  
  


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