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).
Comparative graph of Mean Effective Pressure (MEP) curves for Rudge and HP cylinder heads.
| Identifier | ExFiles\Box 133\2\ scan0184 | |
| Date | 9th November 1935 | |
| COMPARATIVE MEP CURVES FOR RUDGE & H.P. HEADS COMP RATIO 6.8/1 RUDGE CURVE FROM Hs{Lord Ernest Hives - Chair}/Wd{Mr Wood/Mr Whitehead} 1/GB 9.11.35. OPEN EXHAUST. HP HEAD CURVES FROM Hs{Lord Ernest Hives - Chair}/Wd{Mr Wood/Mr Whitehead} 2/GB. 27.5.35. SHEETS 1A & 4. 3 VALVE H.P. SHORT DURN TIMING RUDGE MOD. TIMING 2 VALVE H.P. STD BENT TIMING STD BENTLEY RPM x STROKE MEP 6,000, 7000, 9000, 11,000, 13,000, 15,000, 17,000, 19,000, 21,000 90, 100, 110, 120, 130, 140, 150 | ||