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).
Graph plotting machine tests of rolling resistance against inflation pressure for two different tyre types.

Identifier  ExFiles\Box 53\2\  Scan256
Date  1st October 1926 guessed
  
DUNLOP RUBBER Co. LTD., BIRMINGHAM.
SKETCHED BY
MILL
APPROVED BY
DEPARTMENT
DATE
RECORD NUMBER
ROLLING RESISTANCE (lbs. wt. per ton)
INFLATION PRESSURE (lbs. per sq. in.)
33x5 TYRE
33x6.75 TYRE
MACHINE TESTS ON ROLLING RESISTANCE
SPEED...50 m.p.h.
FIG. 1.
A.{Mr Adams} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} THORNTON LTD MANCHESTER.
  
  


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