Blueprint detailing the valve timing and cam positions for a 25 HP camshaft.
| Identifier | ExFiles\Box 102\5\ scan0087 | |
| Date | 28th September 1931 | |
| Hs {Lord Ernest Hives - Chair} 444 EXHAUST CAM LEADS INLET CAM BY 112° INLET AND EXHAUST CAMS TO E 55358 OTHER DIMENSIONS TO E 55640 VALVE TIMING .013 CLEARANCE 25 HP CAMSHAFT DIRECTION OF ROTATION V {VIENNA} /L OF KEYWAY Main Diagram Labels: 1EX, 4EX, 2EX, 1IN, 3IN, 6IN, 2IN, 4IN, 6EX Angles: 112°, 60° Valve Timing Diagram Labels: IO 5, EC 11, IC 56, EO 50 Stamp: ROLLS-ROYCE, LIMITED, 28 SEP 31 | ||
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).