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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).
Proposing a test on an O.H.C. Bentley engine to compare a new exhaust valve against the existing sodium-cooled valves.

Identifier  ExFiles\Box 113\5\  scan0191
Date  10th March 1937
  
1004

To E.{Mr Elliott - Chief Engineer} from Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}
c. By.{R.W. Bailey - Chief Engineer}

Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}2/AP.10.3.37.

O.H.C. BENTLEY.

We wish to carry out a test using an exhaust valve similar to that used on the present standard Bentley. We doubt whether we are getting anything out of the sodium cooled valves on this engine.

We suggest that a set of modified valve guides to suit the new valve could replace the existing guides, so that a direct comparison could be carried out on one engine using the same cylinder head.

Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}
  
  


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