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 failure and incorrect supply of heat-stressed piston rings for Bentley engines.

Identifier  ExFiles\Box 131\4\  scan0088
Date  11th March 1937
  
/// 3.

Hs.{Lord Ernest Hives - Chair} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}
E.{Mr Elliott - Chief Engineer}
By.{R.W. Bailey - Chief Engineer}
Hm.{Capt. W. Hallam - Head Repairs}

Kingsbury.
Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}1/R.11.3.37.

BENTLEY - PISTON RINGS.

The Kingsbury Department has recently been receiving piston rings that are apparently heat stressed in place of the hammered stressed.

They have been a failure with regard to oil consumption, and have necessitated the stripping down of the engine to fit other rings. A recent case was 400 M.P.G. with the heat stressed rings and 800 hammer stressed standard brico.

The Depot has to-day received another supply of rings which are hammer stressed. Why are these different rings being supplied.

Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}
  
  


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