Confirming an agreement to increase piston ring pressure and dimensions.
| Identifier | WestWitteringFiles\P\2October1926-December1926\ Scan073 | |
| Date | 25th November 1926 | |
| TO HS. {Lord Ernest Hives - Chair} FROM R. {Sir Henry Royce} & E. {Mr Elliott - Chief Engineer} C. to BJ. RG. {Mr Rowledge} BY. {R.W. Bailey - Chief Engineer} PISTONS. ORIGINAL R2/M25.11.26. X3996 X2103 We understand it is now definite-ly agreed that the piston rings shall be increased in pressure on the cylinder walls to the extent of 30/50%., by increasing the depth of the ring from .160 to .190, the gap remaining as at present: groove in piston .215 deep, to meet the increased explosive pressure. R. {Sir Henry Royce} | ||
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).