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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).
10,000-mile test of the latest type of split aluminium pistons.

Identifier  ExFiles\Box 77\3\  scan0116
Date  13th February 1920
  
x3751

Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer}
c. to Bn.{W.O. Bentley / Mr Barrington}
c. to WOR.{Arthur Wormald - General Works Manager}

EP{G. Eric Platford - Chief Quality Engineer}8/F13.2.20.

RE. 10,000 MILES TEST OF LATEST TYPE SPLIT ALUMINIUM PISTONS.

Yesterday's run on 36-TW - 320 miles.

Total Miles run since pistons fitted - 5750 "

Report:-

Engine dismantled and pistons returned to Exp: Dept.
.075" more clearance given to the inside bosses on all pistons.

Elusive knocks very bad on 4, 5 and 6 pistons
after 50 miles running.

Piston knock No.6 cylinder.

EP.{G. Eric Platford - Chief Quality Engineer}
  
  


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