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 Ampere Output versus Speed curves for various dynamos submitted for the Goshawk engine under hot conditions.
| Identifier | WestWitteringFiles\H\November1921\ Scan23 | |
| Date | 11th November 1931 | |
| HOT CONDITION AMPERE OUTPUT - SPEED CURVES OF VARIOUS DYNAMOS SUBMITTED FOR GOSHAWK ALL working on standard volt-ampere characteristics C.A.V. TYPE D.B. (82°C) BTH Type G performance ROTAX TYPE A.T.A. (93°C) LUCAS E.S.R.R. (75°C) LUCAS E.S.R.R. (S.7) (85°C) SMITH TYPE 4D Y-AXIS (Left): AMPERE OUTPUT, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 Y-AXIS (Right): OPERATING VOLTAGE, 13.6, 13.85, 14.1, 14.35, 14.6, 14.85 X-AXIS: R.P.M, 0, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600, 3800 Bottom Right: C.J.D 2.11.31 Bottom Right (Faint): R.R.L / 11.11.31 | ||