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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).
Testing, cost, and potential sourcing of extruded copper tubes for radiators.

Identifier  ExFiles\Box 149a\3\  scan0059
Date  20th August 1921
  
R R 285A (100 T) (S.H 159. 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800
To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}
c. to CJ.
c. to E.{Mr Elliott - Chief Engineer}
c. to Da.{Bernard Day - Chassis Design}
c. to BY.{R.W. Bailey - Chief Engineer}
c. to EWT. for R.R. Inc.

X3678

Hs{Lord Ernest Hives - Chair}1/LG20.8.21

X.2652 EXTRUDED COPPER TUBES FOR RADIATOR. X.3678
X.3456

We have completed 100 hours running on the bump chassis with a radiator built up of copper extruded tubes. We have had no leaks during the whole run.

We attach to Mr. Royce's copy of this memo. a pamphlet describing how these tubes are made.

By the time we received these tubes from America they would be equally as expensive as the Cartridge drawn brass tubes.

One would imagine the extruding process of making tubes must be much cheaper than the drawing process.

We recommend that we should make enquiries to see whether anybody in England are making, or likely to make, extruded tubes.

Hs.{Lord Ernest Hives - Chair}
  
  


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