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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).
Proposed modification to crankshaft lubrication by increasing the number of journal holes.

Identifier  ExFiles\Box 14\2\  Scan153
Date  9th February 1933
  
COPY.
X/7010

Hs.{Lord Ernest Hives - Chair}
c. RHC.{R. H. Coverley - Production Engineer}
----------------

BY.1/G.9.2.33.

X4553
X4027
X5610

LUBRICATION OF CHASSIS CRANKSHAFTS.
-------------------------------

I would suggest that before we put a modification through to increase the number of holes in the journals from 1 to 3 per journal that it would be advisable to try it on Peregrine and Bensport cranks in the first place.

I am therefore holding up the alteration until you have checked that there is no chance of over-oiling occurring. Personally, I think that the quantity of oil thrown about will not materially increase, if it does, it might then mean that we could work with slightly less clearances, but with a very plentiful oil supply.

BY.{R.W. Bailey - Chief Engineer}
  
  


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