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).
Modified duralumin push rod for the Phantom valve gear, proposing two schemes.
| Identifier | ExFiles\Box 66a\2\ scan0055 | |
| Date | 24th August 1927 | |
| To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c.c. to BJ. Hs.{Lord Ernest Hives - Chair} X. 8060 E2/M24.8.27 PHANTOM VALVE GEAR. We send herewith drg. LeC.2452 shewing a modified duralumin push rod for the valve gear: Sch.1. is for application to the bluesports car and sch.2. is a rod of larger dia. which requires an alteration to the cyl. head for its accommodation, the tubes passing through the head being of larger dia. and eccentric to avoid reducting the gas-way. We believe the present duralumin rods are not collapsing over their whole length, otherwise the rod would fail as a column. We believe the metal is giving way where the fitting abuts on to the end of the tube, and in the modified design the fitting is made to embrace the tube while the full area of the rod is used on the end without any reduction, this area incidentally being increased 50% in scheme 1., and 80% in scheme 2. Will you kindly issue the necessary instructions. E.{Mr Elliott - Chief Engineer} COPY | ||