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).
Manufacturing methods for special light pistons for the Phantom, comparing sand casting and forging of magnesium alloy.
| Identifier | WestWitteringFiles\P\July1926-September1926\ Scan094 | |
| Date | 3rd September 1926 | |
| ORIGINAL TO BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} R4/M3.9.26. Copy to - BJ. HS.{Lord Ernest Hives - Chair} re. SPECIAL LIGHT PISTONS FOR PHANTOM. X8040 We should like these tried as sand castings, of the semi-pedestal type, provided the magnesium alloy already submitted, (of approximate- ly 1.82 specific gravity) is suitable for the heat. If however we cannot get magnesium alloy suitable for a piston except as a forging, will this mean a drop forging to shape, or does it mean a forged and machined piston like the Y. metal? R.{Sir Henry Royce} | ||