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).
Comparative performance graph of various 'Goshawk' dynamos, plotting ampere output against dynamo RPM.
| Identifier | WestWitteringFiles\J\May1923\ Scan76 | |
| Date | 28th May 1923 | |
| AMPERE OUTPUT COMPARATIVE PERFORMANCES OF VARIOUS 'GOSHAWK' DYNAMOS WITH MAIN BRUSHES SET 9°(approx) RETARDED FROM NO-LOAD NEUTRAL POSITION TOGETHER WITH CURVE OF MINIMUM SPECIFIED PERFORMANCE SPECIFIED PERFORMANCE 20. S.W.G FIELD WINDING 72°C. STANDARD. NO E288. 72.5°C. STANDARD EXPL. 72.5°C. DYNAMO R.P.M. 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 0 1 2 3 4 5 6 7 8 9 A-1-23 E.F.C 28.5.23 | ||