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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).
Power output curves for the Phantom II with various carburettors and silencer losses.

Identifier  ExFiles\Box 13\3\  03-page422
Date  12th May 1932
  
COPY. X 7080.

To E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/AD12.5.32.

POWER OUTPUT - PHANTOM 11.

X.7771.
X.7080.

We attach curves of the power output of the Phantom 11 with various carburetters, which may be of use to you in testing the correct size of instrument for J.3.

These curves are also interesting as showing the loss in the silencer. The loss between open exhaust and cut out open is about 10 HP.

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


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