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).
Graph comparing engine performance (BHP and BMEP) with varying tappet clearances.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page042 | |
| Date | 12th July 1932 guessed | |
| COMPARISON OF VARYING TAPPET CLEARANCE 104° CAMSHAFT INLET VALVE THROAT 1.200 EX. 1.125 PLUG REACH .950 OPEN EXHAUST 1 5/8 THROTTLE S.U. 5.85 C/R B.H.P R.P.M. B.M.E.P Valve Timing Diagram: EX IN OPEN 2 12 CLOSE 38 29 .020 Graph Labels: .004, .006 Both .013 BOTH .020 | ||