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).
Piston materials for aero and car engines, including trials of magnesium on the Phantom.
| Identifier | ExFiles\Box 66\1\ scan0125 | |
| Date | 22th December 1926 | |
| To RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} PN.{Mr Northey} CWB. R3/M22.12.26. X.4004 X.3996 X.8040 PISTONS - AERO AND CAR. We had better stick to Y. metal for aero work. We now seem to have got these much better i.e. RR.F.10. results. I should like to try magnesium on Phantom. If we could get these reliable, lighter, and free from knocks, they should improve the feel of the engine on the car (i.e. over-running vibration). The Phantom engine is however very good indeed as far as my experiences goes, but here at Le CanadelHenry Royce's French residence it is low speed difficult work which 7-EX is doing better than last year (probably due to improvement in auto: ignition advance. The pedestal pistons on this car are extremely free from knocks. The whole car is very silent, including the big tyres. R | ||