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).
Design of a 40/50 HP hot spot induction pipe, specifically regarding the material and continuity of the steel branch pipe.
| Identifier | WestWitteringFiles\F\April1921\ Scan38 | |
| Date | 22th April 1921 | |
| To HS.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " BY.{R.W. Bailey - Chief Engineer} " " DA.{Bernard Day - Chassis Design} ORIGINAL 2 E6/G22/4/21. X4305. RE 40/50 H.P. HOT SPOT INDUCTION PIPE. In reply to your memo HS{Lord Ernest Hives - Chair}2/LG20/4/21, would you kindly note that the steel branch pipe should not be continuous through the hot spot casting. The drawing LeC.1350 does not shew it as a continuous pipe, and the memo accompanying the drawing (E1/G17/2/21) copy of which you have, does not ask for the pipe to be continuous. The object of using steel was to avoid the torsional set which is found in copper branch pipes from the centre facings to the end ones, due apparently to the weight of the carburettor. With regard to point No.2, the connections should certainly be tried in steel, in which material they should provide a better joint, as you mention. There should be no trouble with corrosion when using steel connections, since the same material gives satisfaction on the sliding joints of the front silencer into which the exhaust downtake pipes are entered. E.{Mr Elliott - Chief Engineer} | ||