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).
Instructions detailing the pre-conditions required before conducting a vehicle test.

Identifier  ExFiles\Box 161\1\  scan0222
Date  10th September 1938 guessed
  
3.

BEFORE MAKING THIS TEST, THE VEHICLE SHOULD HAVE ATTAINED ITS WORKING TEMPERATURE; THE ROAD MUST BE LEVEL AND THERE MUST BE NO WIND.

SINCE THIS IS AN APPROXIMATE FORMULA ONLY, THE SPEED DIFFERENCE BETWEEN V1 AND V2 SHOULD NOT EXCEED 12 M.P.H.
  
  


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