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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).
On applying an automatically adjusting valve tappet scheme to the P.2. engine for experimental trials.

Identifier  ExFiles\Box 158\4\  scan0017
Date  15th July 1930
  
X3733
By.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer}
C. Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair}

E1/M15.7.30.

X.1157

P.2. AUTOMATICALLY
ADJUSTING VALVE TAPPETS.

We send herewith Lec.2808, shewing the above.
We think that when it come to a multi-cylinder
engine of the pushrod overhead valve type it will be
necessary to have some such scheme as this, especially
where aluminium cylinder blocks are employed in addition
to aluminium heads.

We have therefore applied such a scheme to
the P.2. engine to get an experimental trial well in advance.
At the same time the P.2. engine has some
need of such a device in view of a certain amount of tappet
temperature noise experienced when warming up, due to the
cylinder temperature overtaking the temperature of the
val ve gear.

Various notes are given on the drawing setting
out the features of the scheme, method of obtaining oil, etc.

E.{Mr Elliott - Chief Engineer}
  
  


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