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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).
Oil supply to valves and a clutch shudder issue in Phantom & 20HP cars.

Identifier  WestWitteringFiles\T\2July1928-December1928\  Scan152
Date  19th October 1928
  
HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce}
C. to BJ.
" WOR.{Arthur Wormald - General Works Manager}
" BY.{R.W. Bailey - Chief Engineer}

ORIGINAL.

PHANTOM & 20HP. CARS.
12-G-4.

Y5770
X5060
X5500

I am convinced that it is necessary to give all the valves ample oil supply. I find it difficult to believe that oil did any harm with our arrangements of valve guides and glands. We feel sure that it is necessary to supply oil to all the valves by creeping along rocker bushes. (It is wrong to try to get squirts at full lift. We have always condemned this as not practical or desirable.)

It is not valve stem clearance, because it was cured by hand oiling.

12-G-4. clutch shudders badly. It was not cured by slipping it. Do you recommend oiling, and can you do so?

R.{Sir Henry Royce}
  
  


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