Graph showing characteristic curves for the Goshawk automatic ignition advance governor.
| Identifier | ExFiles\Box 51\5\ Scan237 | |
| Date | 12th March 1923 guessed | |
| CHARACTERISTIC CURVES OF RR GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) AUTOMATIC IGNITION ADVANCE GOVERNOR I. CURVE REQUIRED BY ENGINE. II. NEAREST CURVE TO I OBTAINED BY CALCULATION. III. ACTUAL CURVE OBTAINED WITH GOVERNOR. LIMITS TO PERFORMANCE AS GIVEN IN SPECIFICATION. CAM ADVANCE (DEGREES) DISTRIBUTOR SPEED (RPM) A.D. 852 | ||
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).