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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).
Reduction in the maximum engine speed for the 40/50 HP model.

Identifier  ExFiles\Box 4\5\  05-page268
Date  27th May 1924
  
To E.F.C. from Hs.{Lord Ernest Hives - Chair}

X 8790

HS{Lord Ernest Hives - Chair}3/LG27.5.24

SPECIFICATION OF MAGNETO ON 40/50 HP.

We consider the maximum speed of 3,300 revs. is too high for a 40/50 HP. engine. At the present time the valves leave their seats just over 2,500 revs. so that the engine will not run much above that speed. If we fix the maximum speed at 2,700 revs., this, we consider, will allow ample margin.

Hs.{Lord Ernest Hives - Chair}
  
  


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