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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).
Testing Phantom II gearboxes with Whitmore's and Price's compounds.

Identifier  ExFiles\Box 15\5\  Scan133
Date  11th June 1930
  
COPY. X 7310.

X. 4481.
X. 967.
X. 7310.
X. 7530.

BY.{R.W. Bailey - Chief Engineer}
HS.{Lord Ernest Hives - Chair} From Mx.{John H Maddocks - Chief Proving Officer}

Mx{John H Maddocks - Chief Proving Officer}8/T11.6.30.

PHANTOM II GEAR BOXES.

Further to my memo MX{John H Maddocks - Chief Proving Officer}9/T30.5.30., we have run three Phantom Gear boxes with 50% of Whitmore's Compound.

These boxes were run on this mixture through Unit and Dynamometer test - in every case the condition of the gears surface was excellent.

In accordance with arrangements made with Hs.{Lord Ernest Hives - Chair} we shall now run three more boxes with a similar percentage of Price's Compound, and incidentally we are arranging to revert to Price's Compound for axle testing.

Mx.{John H Maddocks - Chief Proving Officer}
  
  


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