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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).
Two memorandums discussing axle ratios for Phantom Chassis intended for the American market.

Identifier  ExFiles\Box 66\4\  scan0337
Date  2nd March 1926 guessed
  
COPY OF MEMORANDUM BJ2/H24.2.26.

To BY.{R.W. Bailey - Chief Engineer} from BJ.
Copies to Wor.{Arthur Wormald - General Works Manager}
Hs.{Lord Ernest Hives - Chair}

Re Axle Ratios for Phantom Chassis for America.

I attach a copy of a letter dated 10th February, from R.R.A.I. recommending that all chassis sent to America should be fitted with 14-tooth axles.

I believe some tests were made some time ago to show what was the exact difference between 14 and 15-tooth axles, and certain conclusions were come to in regard to the difficulty of manufacture, noise, petrol consumption, decrease of top speed, engine roar, overheating, etc.

Will you kindly forward any information on these points which will be of assistance to the American Company in considering this matter?

B.J.


COPY OF MEMORANDUM BY4/H25.2.26.

To BJ.
Copies to Wor.{Arthur Wormald - General Works Manager}
Hs.{Lord Ernest Hives - Chair}

Axle Ratios for Phantom Chassis intended for America.

Referring to BJ2/H24.2.26 and Rolls-Royce of America inc. letter of February 10th, attached, we do not think it advisable to discuss the pros and cons of the axle ratio with our American associates, as their conditions would be entirely different from ours. We would suggest that we accept their estimate of the position, which must be based upon the performance of other chassis which they have to figure against, and arrange to carry out their requirements of fitting a 14/52 ratio axle in the future.

I propose, with your consent, to instruct the Works accordingly.

BY.{R.W. Bailey - Chief Engineer}
  
  


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