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).
Test results for special output figures of a Goshawk dynamo.
| Identifier | ExFiles\Box 51\2\ Scan115 | |
| Date | 16th June 1923 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC {E. Fowler Clarke - Electrical Engineer} Order No: AR.72. Customer's No.: 1 Special Output figures of Goshawk Dynamo A test was made on Goshawk dynamo N=288 to find the speeds at which outputs of 2.5, 5.0 & 7.5 amps respectively were obtained at -13.0 volts hot. The machine was run at maximum output until a steady temperature of 68° C was reached, when the performance of the above was found to be as below. Table: Amps | Dynamo r.p.m | Corresponding car m.p.h. 2.5 | 700 | 9.5 5.0 | 805 | 10.9 7.5 | 965 | 13.0 Signed: F. {Mr Friese} J. {Mr Johnson W.M.} Allen This Sheet must be filed on completion of the work. | ||