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 the governor advance curve for an S.R. distributor, showing operating limits against RPM.
| Identifier | ExFiles\Box 168\3\ img207 | |
| Date | 3rd June 1939 | |
| GOVERNOR ADVANCE CURVE OF S.R. DISTRIBUTOR No. 4 TO D.W./426 SPRINGS FITTED TO SUIT NEW G.V. LIMITS TO REPORT Km/JMW 3.6.39 MAIN SPRING .800" LONG .048" WIRE 12 1/4 COILS MEAN DIA .344" FREE ANGLE 108° LOADING TO 170° = 3 1/2 OZS AUXILIARY SPRING .450" LONG .064" WIRE 6 1/3 COILS MEAN DIA .360" FREE ANGLE 124° LOADING TO 170° = 3 LBS LOWER GOVERNOR WEIGHTS DB{Donald Bastow - Suspensions} 2404 x DB{Donald Bastow - Suspensions} 2405 LIMIT LIMIT G.A.40. DISTRIBUTOR SPEED R.P.M. | ||