Rolls-Royce Archives
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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).
Note on the endurance testing of oil bath tempered valve springs.

Identifier  ExFiles\Box 80\3\  scan0155
Date  5th June 1918
  
Wor{Arthur Wormald - General Works Manager}/EH19/L16713. (contd)
2.
File
X.472 - Valve Springs tempered in oil bath.
These have run 50 hours at 2000 revs without a breakage.
[Watermark: DICKINSON BOND MADE AT CROXLEY]
[Footer: R.R. 285A (150 H) (XX. 892. 5.6.18) E.P. 4888.]
  
  


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