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).
Porosity of a new piston alloy and agreeing to tests without zinc or tin.
| Identifier | Morton\M8\ img035 | |
| Date | 4th September 1917 | |
| To Ry from R.{Sir Henry Royce} c. to clk. c. to E.{Mr Elliott - Chief Engineer} c. to Stron. c. to EJ ORIGINAL 3123 3144 3136 St.{Capt. P. R. Strong} Margaret's Bay. Sept. 4th. 1917. 6 X. 2749 RECEIVED 6 SEP 1917 R8/W3917. Re - Piston Alloy. Regarding the piston alloy having 7% of copper. The works complaining that this alloy is more porous than our old 12% cannot, one would think, be entirely right, and must be caused through some other reason. I am quite agreeable to Mr. Kesterton making a test without the zinc, or without the tin, or without both. I should have thought that the zinc at least would have been an advantage, bringing the metal more in the line with the crankchamber metal which is so good. p.p. R.{Sir Henry Royce} (CRE) | ||