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).
Requesting better M.E.P. (Mean Effective Pressure) and suitable valve springs for 20 HP and 40/50 engines.
| Identifier | ExFiles\Box 5a\5\ 05-page003 | |
| Date | 11th November 1926 | |
| To E.{Mr Elliott - Chief Engineer} from R.{Sir Henry Royce} To Hs.{Lord Ernest Hives - Chair} c. to BJ. Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} X5771 RL/MS.11.26. 20 HP. AND 40/50 ENGINES. X. 8771 X. 634 X. 5771 X. 8010 X. 8060 Better M.E.P. needed for the above - maximum HP. just under master crankshaft period, also valve springs suitable for just under this speed. R.{Sir Henry Royce} | ||