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).
Calculations for vehicle performance in 2nd gear, including speed, displacement, and ton-miles.

Identifier  ExFiles\Box 29\3\  Scan012
Date  20th March 1911 guessed
  
T.T. X1010 / 4200.
2nd gear.
27 m per hr. 2.95 miles in 6.5 min.. Ton miles 3.62.
= 6620 revs = 802,500 cu ins displacement
= 222000 for ton mile
= 34200 for ton mile per min.
R
  
  


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