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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).
Revised 20 HP valve timing following Mr. Royce's wishes.

Identifier  ExFiles\Box 106\5\  scan0045
Date  18th June 1929
  
N5060
E.{Mr Elliott - Chief Engineer}
Sg.{Arthur F. Sidgreaves - MD}
Hs.{Lord Ernest Hives - Chair}
BY/Cgh{W Clough}5/N.18.6.29.

Re: 20 HP. VALVE TIMING.

With reference to E3/M1.6.29, we were able to hold up work on production of the master cams to enable Mr Royce's wishes to be incorporated, and send you herewith blueprint of Sch.1153 showing the revised inlet valve lift curve with the period of the heavy acceleration reduced from 7 - 6 divisions.

We are now instructing the Works to proceed.

BY/Cgh.{W Clough}
  
  


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