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).
Material choices for valve push rods on Phantom engines, comparing steel, monel-metal, and duralumin.
| Identifier | ExFiles\Box 66a\2\ scan0025 | |
| Date | 15th April 1926 | |
| To R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} c. to BJ. Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} X8060 E2/M/15.4.26. RE. VALVE PUSH RODS - PHANTOM. X.8060 X.8090 Hitherto the valve push rods used on Phantom engines have been made from steel tubing. Hs.{Lord Ernest Hives - Chair} now informs us that push rods of monel-metal tubing give a better result in maintaining rocker clearance with the valve unaltered on the present engine and that this shews we shall require to use duralumin tubing on the alum. Phantom. Duralumin has already been tried in Derby and will not stand up to the load. The tubes collapse and rub against the side of the guide holes. We are looking into the question of increasing the dia. of the push rods and the holes through the cylinder. E.{Mr Elliott - Chief Engineer} | ||