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).
Knocking issue in the Goshawk magneto drive and its implications for the Vulture engine.
| Identifier | ExFiles\Box 76\2\ scan0162 | |
| Date | 25th September 1920 | |
| X-4227 To Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " Ds. " " EFC. E1/G25.9.20. X.3550. X.3548. RE "GOSHAWK" MAGNETO DRIVE. In accordance with Mr. Royce's wishes, would you kindly report as to whether the magneto on the "Goshawk" causes a knock in the driving gear at slow engine sp{Mr Spinney} eeds. It was Napier experience that the water pump and the magneto cross [handwritten: drive] whether at the front or rear of the engine was noisy, due to the variations in the torque of the magneto and the slack which necessarily occurs in skew gearing. It was found that it could be cured, as one would expect, by applying friction to the magneto drive shaft. The above has an important bering on the arrangement of the "Vulture" engine which is going forward now. E.{Mr Elliott - Chief Engineer} | ||