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).
Piston leakage and the necessity to test at various pressures, not just various speeds.
| Identifier | WestWitteringFiles\P\2October1926-December1926\ Scan015 | |
| Date | 14th October 1926 | |
| TO HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} Copy to BJ " RG{Mr Rowledge} " BY ORIGINAL R1/M14.10.26. re PISTON LEAKAGE. X8040 X858 I imagine that new pistons if well made are very gas tight until a certain pressure occurs on top of the piston, when the rings may collapse. So that instead of leaks at various speeds we ought to try every pressure at normal speed. Other information will be good, but the above is vital and urgent. RECEIVED OCT 5 1926 HS{Lord Ernest Hives - Chair} | ||