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).
Suggesting an investigation into using cheaper American-made extruded copper radiator tubes.
| Identifier | ExFiles\Box 149a\3\ scan0048 | |
| Date | 24th March 1921 | |
| To R.{Sir Henry Royce} From Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} X3678 x3456 RADIATOR TUBES. The extruded copper tubes which they make in America for radiators can be bought for approximately one-third the price we pay for our brass drawn tubes. In U.S.A., I was told that the reason they had not develop ed{J. L. Edwards} the brass drawn tubes was because the extruded copper tube had been proved equally as good for radiators and was very much cheaper. I attach to Mr. Royce's copy of this, an advertisement from an American paper which states that some of the radiator manufacturers using these extruded copper tubes are prepared to guarantee the radiator for the life of the car. There is no difficulty in getting these copper tubes with round ends instead of hexagon, in fact, in that form they would be slightly cheaper. We consider that we ought to investigate the possibilities of using extruded tubes because the present drawn tubes are very expensive. HS.{Lord Ernest Hives - Chair} | ||