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).
Trialling sand cast pistons made from Hall's Special Alloy for the 12-EX and a bench test engine.
| Identifier | ExFiles\Box 15\3\ Scan009 | |
| Date | 26th January 1928 | |
| RHC.{R. H. Coverley - Production Engineer} H.I. Hs.{Lord Ernest Hives - Chair} C. Wor.{Arthur Wormald - General Works Manager} X7040 BY17/G.26.1.28. PISTONS IN HALL'S SPECIAL ALLOY. -------------------------------- We are anxious to try out the above alloy as sand cast pistons for 12-EX. The type of piston being the one designed like the present standard with the crown pushed up. We suggest two sets of pistons, one for 12-EX and one for the bench test engine. BY.{R.W. Bailey - Chief Engineer} ROLLS-ROYCE LIMITED | ||