Better Mean Effective Pressure for 20 HP and 40/50 HP engines.
| Identifier | ExFiles\Box 65\4\ scan0174 | |
| Date | 8th November 1926 | |
| To E. {Mr Elliott - Chief Engineer} from H To Hs. {Lord Ernest Hives - Chair} c.c. to E.J. Wor. {Arthur Wormald - General Works Manager} By. {R.W. Bailey - Chief Engineer} X8010 R {Sir Henry Royce} /H8.11.26. 20 HP. AND 40/50 ENGINES. X.8771 X.634 X.5771 X.8010 X.8060 Better MEP. needed for the above - maximum HP. just under master crankshaft period, also valve springs suitable for just under this speed. 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).