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).
Ignition performance chart showing governor characteristics for a Bentley V engine.
| Identifier | ExFiles\Box 168\3\ img080 | |
| Date | 14th February 1939 guessed | |
| BENTLEY V IGNITION UNIT B II N.o 5 CYL. HEAD EW 1949 PISTONS P 414 (170 RAISED CROWN) CAMSHAFT EX 31550 IGN. SYSTEM B. II (MV4 CARBS) C/R = 6.5 : 1 DELCO REMY 1) MAX. VARIATION BETWEEN CYLS. a) N.o 1 CYL b) N.o 4 CYL 2) GOVERNOR CHARACTERISTIC R.R. 3) MAX VARIATION BETWEEN CYLS a) N.o 3 CYL b) N.o 6 CYL 4) GOVERNOR CHARACTERISTIC DEGREES B.T.D.C R.P.M. (CRANK) | ||