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).
Excessive wear on Spectre Valve Spring Washers and proposing a material change.
| Identifier | ExFiles\Box 96\2\ scan0047 | |
| Date | 24th June 1935 | |
| To D.{John DeLooze - Company Secretary} from RHC.{R. H. Coverley - Production Engineer} To By.{R.W. Bailey - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} Rm{William Robotham - Chief Engineer} X354 RHC.{R. H. Coverley - Production Engineer}5/ETM24.6.35. SpectreCodename for Phantom III Valve Spring Washers Both the top washer E.86359 and the bottom washer E.86374 are subject to excessive wear on the spring face. Owing to the valve turning round on its seat the top washer wears evenly over the whole face but at the bottom end the spring merely fidgets on the washer and the tip of the end coil digs heavily into the face. Whereas the top washer is made in S/N, the bottom washer is only Mild Steel, so that wear on the latter could no doubt be reduced by producing both in S/N following aero practice. RHC.{R. H. Coverley - Production Engineer} | ||