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 of engine BHP and induction depression versus RPM, comparing performance with two different carburetter choke sizes.
Identifier | ExFiles\Box 13\3\ 03-page352 | |
Date | 10th October 1931 guessed | |
DEPRESSION WITH VARIOUS CHOKE SIZES. P1 STANDARD CAMSHAFT VALVE LIFT .480 TABLE DATA: CARBURETTER | CHOKE DIA. | DIFFUSER AREA | FREE AREA THROUGH CHOKE | THROTTLE | BARREL R.R.C.H. A | 1.40 | .28 SQ IN | 1.25 SQ IN | [Full] | 1-4 HAWK C.H. B | 1.10 | .77 SQ IN | .77 SQ IN | [Full] | 1-4 VALVE TIMING DIAGRAM: IN: 7.5, 55 EX: 55, SI .013 CLCE AXES LABELS: Left Y-Axis: B.H.P. Right Y-Axis: INDUCTION DEPN. INS. HG. X-Axis: R.P.M. | ||