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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).
Satisfactory performance of silent tappets fitted to a Phantom car and their potential introduction.

Identifier  ExFiles\Box 17\6\  Scan333
Date  28th January 1935
  
Hs{Lord Ernest Hives - Chair} / Rm{William Robotham - Chief Engineer}
x7060
To Wor.{Arthur Wormald - General Works Manager} from Sg.{Arthur F. Sidgreaves - MD} re Silent Tappets on the Phantom.
Sg{Arthur F. Sidgreaves - MD}8/E28.1.35
Copy to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}E.BY:
Referring to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.18.X.35, the silent tappets have been fitted to my car for several months and, so far, have worked very satisfactorily.
As this has been done to a Phantom car, presumably the design work has been done but on this point I am not clear.
In view, however, of the tailing off of the Phantom, I am not sure what can be done about introducing them.
I should be glad if you would discuss it with the people concerned and let me know.
Sg.{Arthur F. Sidgreaves - MD}
  
  


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