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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).
Letter from 'MOTOR SPORT' magazine concerning gear ratio corrections for a 4 1/4 litre car.

Identifier  ExFiles\Box 160\5\  scan0199
Date  8th February 1941
  
MOTOR SPORT

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OFFICIAL JOURNAL OF THE BRITISH RACING DRIVERS' CLUB
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[Handwritten text]
129, Fleet Road,
S. Farnboro', HANTS.
Feb. 8th. 1941.

W. Robotham, Esq.,
Rolls-Royce, Ltd.,
Derby.

Dear Mr. Robotham,

Thank you for your letter of Feb. 2nd, returning the proof.
I have corrected the points raised, but I have put the top-gear ratio of the pre-overdrive 4 1/4 litre in as "4.1 to 1 and later 4.25 to 1", in spite of your note, as I have seen the former ratio quoted in three separate places, and think it must be correct, although it is not quoted in the Bentley catalogue at all. I have not my more-recent references here in the country with me, such as H.S. Linfield's war-time test of a 4 1/4 litre, but I imagine
  
  


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