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Secret internal memorandum discussing tyre testing and performance for the 'Corniche' model.


Identifier  ExFiles\Box 98\5\  scan0042
Date  2nd August 1939
  
4009
SECRET.
W/S. {Derby Works / Sales}
C. from Rm. {William Robotham - Chief Engineer}
Rm {William Robotham - Chief Engineer} 2/R.2.8.39.
14-B-V 'CORNICHE(Bentley streamline(Experimental Streamline Bentley B.23.A.E)d precursor to R Type Continental, never produced)'.
Sg. {Arthur F. Sidgreaves - MD} In view of the fact that our testers in France are recording their tyre tests in the Daily Reports, the results they are obtaining do look alarming unless one understands what is being done.
Before this car left England, we ran our present standard India(Production 20 HP. with 4-speed box and Front Wheel Brakes) tyre on it, and these threw the tread after 3 miles @ 100 m.p.h. The Avon tyre was just about 5 times as good.
We shall have no difficulty in getting an Avon tyre which will be satisfactory on the 'Corniche(Bentley streamline(Experimental Streamline Bentley B.23.A.E)d precursor to R Type Continental, never produced)' before the Motor Show.
The Dunlop Rayon tyre is, of course, purely experimental, and has never been in production.
Rm. {William Robotham - Chief Engineer}
  
  
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).


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