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).
The testing and dimensional examination of Magnesium Alloy castings for Bentley and PV.XII aero engines.
| Identifier | ExFiles\Box 142\4\ scan0021 | |
| Date | 27th February 1934 | |
| X4112 To Hs.{Lord Ernest Hives - Chair} from E/Lid.{A. J. Lidsey} c. Wor.{Arthur Wormald - General Works Manager} Hy{Tom Haldenby - Plant Engineer}, RHC.{R. H. Coverley - Production Engineer} E/Lid.{A. J. Lidsey}2/HP.27.2.34. Bentley - Magnesium Castings. We are anxious that castings in Magnesium Alloy should be tested out at the earliest opportunity. As it is anticipated that the problem of producing castings in magnesium will need a different technique from that employed to produce the present aluminium alloy castings, it appears important that the castings received from the British Maxium Company should be very thoroughly examined both dimensionally and for any defects which may be shown up due to foundry difficulties such as shrinkage or metal flow. We understand that quite a number of the castings received both for the Bentley and the PV.XII aero engine have had to be returned to the makers for various reasons, and for this reason alone we should welcome a report on the condition of the castings that have been received. With regard to the testing of these parts it is extremely important that the parts put on to test cars or engines should be dimensionally the same as the aluminium parts which they replace. It is only by this means that it will be possible to obtain true comparative tests both as regards structural strength and saving in weight. E/Lid.{A. J. Lidsey} | ||