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).
Valve lift diagrams for a 500cc Rudge Unit, comparing modified and standard camshafts.
| Identifier | ExFiles\Box 133\2\ scan0182 | |
| Date | 2nd October 1946 | |
| 500 C.C. RUDGE UNIT. VALVE LIFT DIAGRAMS. - MODIFIED AND STD CAMSHAFTS. VALVE TIMING AT .020" CLCE (MOD.) I.O. 19° A.T.D.C. E.O. 42° B.B.D.C. I.C. 58° A.B.D.C. E.C. 8° A.T.D.C. BORE: 3.346" STROKE: 3.464" C.R. 7.3/1 STD. RUDGE CAMSHAFT VALVE TIMING (.020" CLCE) I.O. 28° E E.O. 50° E I.C. 48° L E.C. 25° L VALVE LIFT (INS) CRANK ANGLE BDC TDC EXHAUST VALVE (NO TAPPET CLCE.) INLET VALVE (NO TAPPET CLCE.) MODIFIED CAMSHAFT JLE{J. Lee Evans - Chassis Test Manager} 2-10-46 | ||