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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).
Comparative test of S.S. radiator tubes and a subsequent recommendation.

Identifier  ExFiles\Box 15\1\  Scan133
Date  7th August 1929
  
X7250

To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

Copy to SE. Wor.{Arthur Wormald - General Works Manager}
Ey. Da.{Bernard Day - Chassis Design}
Oy. Hm.{Capt. W. Hallam - Head Repairs} E.{Mr Elliott - Chief Engineer}

Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/BE7.8.29.

X7250
X766

S.S. RADIATORS.

We have made a careful comparative
test of the 6/7 mm. tubes and the 5 1/2/7 mm. tubes on
the S.S., and the results show that there is no
measurable difference in the cooling capacity of the
radiator with the tubes giving the wider water spaces.

We therefore recommend that these tubes
should be used for the S.S. and for all replacements
in the case of radiators having integral shutters and
tubes 4.25" long.

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


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