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).
Diagram for determining the advance characteristic of a Goshawk ignition governor.
| Identifier | WestWitteringFiles\H\March1922\ Scan45 | |
| Date | 23th March 1932 | |
| DIAGRAM FOR DETERMINATION OF ADVANCE CHARACTERISTIC OF GOSHAWK IGNITION GOVERNOR DYNAMIC COUPLE OR SPRING COUPLE (Arbitrary Units) 10 20 30 40 50 60 70 80 1500 R.P.M. 1250 R.P.M. 1000 R.P.M. 750 R.P.M. 500 R.P.M. 250 R.P.M. Angular Position of Governor Weights 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 Angular Advance of Cam -4, 0, 4, 8, 12, 16, 20, 24, 28, 32, 36 1 2VI A II III IV E.T.C 23/3/32 | ||