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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).
Elusive engine knock during a 10,000-mile test of the latest type of split aluminium pistons.

Identifier  ExFiles\Box 77\3\  scan0118
Date  14th February 1920
  
X.3757

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}15/F14.2.20

X.3647. RE 10,000 MILES TEST OF LATEST TYPE SPLIT
X.3751. ALUMINIUM PISTONS.

Yesterday's run on chassis 53-CW
260 miles.

Total miles run since pistons fitted..
6010 "

Report;

Rear 3 pistons changed over to front. Elusive knocks still bad and still seem most easily affected by shorting 4, 5, 6 cyls. as demonstrated to you,

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


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