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).
Characteristic curves for the Goshawk automatic ignition advance governor.
| Identifier | ExFiles\Box 37\1\ scan 280 | |
| Date | 28th August 1934 | |
| CHARACTERISTIC CURVES OF R.R. GOSHAWK AUTOMATIC IGNITION ADVANCE GOVERNOR A.{Mr Adams} I. A CURVE OBTAINED BY CALCULATION JUDGED TO BE THE NEAREST POSSIBLE TO THE EXPERIMENTALLY FOUND REQUIREMENTS OF THE ENGINE AT THE TIME. II. ACTUAL CURVE OBTAINED WITH GOVERNOR ☉ LIMITS TO PERFORMANCE AS GIVEN ON SPECIFICATION. CAM ADVANCE (DEGREE) ENGINE 28 24 20 16 12 8 4 0 DISTRIBUTOR 14 12 10 8 6 4 2 0 DISTRIBUTOR SPEED. R.P.M. 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 ENGINE SPEED. R.P.M. 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 I II H.P.W 27-8-34 E.T.C 28/8/34 | ||