Rolls-Royce Archives
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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).
The Phantom Relief Valve and the suitability of a new batch of bow spring material.

Identifier  ExFiles\Box 66a\4\  scan0030
Date  1st July 1927
  
To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}
X8205
Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}1/LG4. 7. 27.
PHANTOM RELIEF VALVE.
With the results taken on the unit test bed, we are of the opinion that we should retain springs E.76290 for rocker and gear valves. The bow spring material supplied to the Works is not so flexible as those made for the first experimental valves.
Hs{Lord Ernest Hives - Chair}/G.W.Hancock.
  
  


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