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 showing the characteristics of the suction and speed-operated ignition control for a Graham-Paige car.
| Identifier | ExFiles\Box 133\2\ scan0140 | |
| Date | 9th January 1938 | |
| GRAHAM - PAIGE CHARACTERISTICS OF SUCTION & SPEED OPERATED IGNITION CONTROL CAR RUNNING LIGHT AT VARIOUS SPEEDS. DEPRESSION ON SUCTION CONTROL - INS HG IGNITION ADVANCE - DEGREES 20 15 10 5 0 DEPRESSION ON SUCTION CONTROL IGNITION ADVANCE DUE TO SUCTION CONTROL IGNITION ADVANCE DUE TO SPEED CONTROL ENGINE R.P.M. 500 1000 1500 2000 2500 3000 3500 4000 CAR SPEED - M.P.H. 0 10 20 30 40 50 60 70 80 F.I.L.L.S 9-1-38 | ||