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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).
Proposing to specify fuel by a minimum octane number for civil engines, rather than by brand name.

Identifier  ExFiles\Box 27a\4\  Scan083
Date  9th March 1933
  
EP.{G. Eric Platford - Chief Quality Engineer}
c. Rg.{Mr Rowledge}
c. Hs.{Lord Ernest Hives - Chair}
c. BY/NW.{N. Walker - Patents}
[Handwritten:] γ 1282. BY.{R.W. Bailey - Chief Engineer} 2/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 9.3.33.
[Stamp:] 6 MAR

RE: FUEL FOR CIVIL ENGINES.

EP{G. Eric Platford - Chief Quality Engineer}/AGR.17/T.9.3.33.
I think that instead of merely specifying "Shell Aviation" mixture we should in future quote '75 octane number' as the quality of fuel with which the engine should be run.
This octane should be the minimum, we prefer it more, increased up to 80.

BY.{R.W. Bailey - Chief Engineer} [Handwritten signature]
  
  


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