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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).
Page discussing the effect of vacuum in the induction pipe on coupling rattle.

Identifier  ExFiles\Box 25\3\  Scan028
Date  19th November 1911 guessed
  
(2)

of the engine when air is admitted to the induction pipe and when the induction pipe has in it a considerable vacuum, i.e. the pressure considerably below the atmosphere. This would make a great difference in the tendency to rattle in the coupling.

F.H.R.

[Watermark text]
DICKINSON BOND
1804
MADE AT CROXLEY
  
  


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