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).
Performance graph for a high compression engine with different back axle ratios.

Identifier  Morton\M7\  img069
Date  5th May 1921 guessed
  
BACK AXLE 16x52.
BACK AXLE 15x52.
BACK AXLE 14x52.
(7.00 TYRES).
1500
1750
2000
ENGINE. - HIGH COMPRESSION.
  
  


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