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).
Blueprint graph comparing Delco Remy and R.R. ignition characteristics for a Bentley V engine.
| Identifier | ExFiles\Box 168\3\ img079 | |
| Date | 14th February 1939 guessed | |
| BENTLEY V IGNITION S.72 UNIT B.III N° 5 CYL. HEAD E.W. 1949 PISTONS P. 414 (.170 RAISED CROWN) CAMSHAFT Ex.31550 INDN. SYSTEM B.III (H.V. 4 CARBS.) C/R = 6.5:1 DELCO REMY ① MIN. ADV. FOR MAX. POWER ② LINE TO AVOID DETONATION ③ GOVERNOR CHARACTERISTIC R.R. ④ MIN. ADV. FOR MAX. POWER ⑤ LINE TO AVOID DETONATION ⑥ GOVERNOR CHARACTERISTIC Y-Axis Top Graph: B.M.E.P. Y-Axis Bottom Graph: DEGREES B.T.D.C X-Axis: R.P.M. (CRANK) Bottom left axis label: TDC | ||