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 open-circuit volt-speed curves for the Goshawk Dynamo under cold and hot conditions.
| Identifier | ExFiles\Box 51\1\ Scan131 | |
| Date | 23th January 1923 | |
| OPEN-CIRCUIT GOSHAWK DYNAMO VOLT-SPEED CURVES. For cold and fully hot conditions. E.M.F. [VOLTS] DYNAMO SPEED [R.P.M.] Balancing Speeds Dynamo. 12.4v. Cold 13.6v. Hot Range U.S.A Bosch. 467 550 83. C.A.V. D.B. 529 579 50. R.R. Nº 43 570 660 90. R.R. Expl. 585 674 89. Graph Lines: U.S.A. Bosch (14°C) U.S.A. Bosch (65°C) C.A.V. D.B. (22°C) C.A.V. D.B. (58°C) R.R. Nº 43 (14°C) R.R. EXPL (18°C) R.R. Nº 43 (64°C) R.R. EXPL. (82°C) Horizontal Lines: 13.6 volts. 12.4 volts. Handwritten: B. A.H. 20-I-23 E.T.C 23/I/23 | ||