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).
Engine performance improvements through increased MEP and compression ratio, noting limitations from detonation and proposing solutions.

Identifier  WestWitteringFiles\P\2October1926-December1926\  Scan055
Date  9th November 1926
  
TO HS.{Lord Ernest Hives - Chair} } FROM R.{Sir Henry Royce}
C.C. to P.I.
" WCH.
" B.T.
ORIGINAL
R2/M9.11.26.
BETTER MEP. AT ALL SPEEDS UP TO 3000 RPM. & 4 1/2 COMPRESSION RATIO.
X684
X8771
X8005
This cannot be increased because of detonations and reaction vibrations. However, corrected auto ignition - (i.e. excessive and suitably timed advance - auto) can be made to eliminate moderate detonations, and minimise torque reactions.
R.{Sir Henry Royce}
  
  


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