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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).
Standardisation of large diameter American tubes for radiators for the 25 HP and 40/50 models.

Identifier  ExFiles\Box 16\2\  Scan025
Date  23th July 1931
  
By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

ry-50.

RADIATORS.

Ha/Rm.{William Robotham - Chief Engineer}5/MJ.23.7.31. X.7250.
X.5250.

You will see from our recent notes that it has been decided to standardise the large diameter American tube.

We have handed one of these tubes to By/SS.{S. Smith} in order that he may make a drawing of it. We should then like you to order up a quantity of such tubes for both the 25 HP. and 40/50 radiators.

You will of course arrange that the gap on the tubes of the 25 HP. radiator is not too small. We should recommend a gap of 1 1/4 mm., this being approximately the right size.

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


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