The starter motor wiring recommendation for the Goshawk engine, comparing its current draw to the 40/50 model.
| Identifier | ExFiles\Box 45\3\ Scan163 | |
| Date | 28th January 1922 | |
| X.4075. To E. {Mr Elliott - Chief Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} c. Ey. c. EP. {G. Eric Platford - Chief Quality Engineer} EFC {E. Fowler Clarke - Electrical Engineer} 1/T28.1.22. X.4075 - GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) WIRING. The Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) starter motor will take at least as large a current, if not larger, than the 40/50. The reason of this is that the motor is designed to take more current and do more work proportionally. My recommendation is that the starter cable be not reduced below 84/25's as suggested, which size we know to be too small, though standard for the 40/50. My recommendation in the 40/50 case was that we should use 84/24's. EFC. {E. Fowler Clarke - Electrical Engineer} [Watermark: ORIGINAL LION BOND] [Watermark: 1804] [Watermark: MADE AT CROXLEY] | ||
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).