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).
Tyre tread print analysis for an 'India Super Nonskid' tyre, showing contact area and load data.

Identifier  ExFiles\Box 29\4\  Scan152
Date  23th November 1933 guessed
  
- INDIA SUPER NONSKID - SIZE 5.50/18 (28x5.50)
TOTAL AREA = 22.54 SQ. INS.
ROAD CONTACT " = 14.68 "
GROOVE " = 7.86 "
SKID LINE LENGTH = 56 1/2"
LOAD = 8 CWTS.
  
  


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