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).
Extract from a report on electrical matters regarding a visit to Messrs. Wormald & Hives and the Goshawk II dynamo.
| Identifier | ExFiles\Box 51\1\ Scan002 | |
| Date | 19th March 1921 | |
| X 3533 4383, Extract from E8/G31.3.21 re Electrical Matters. Report of visit of Messrs. Wormald & Hives to W.W. on 19.3.21. (7) "GOSHAWK II" DYNAMO. X.3533. X.294. X.1005. X.1692. 4383 It is desired to know if the Rotax dynamos is a hummer, or if it bears out Mr. Royce's suggestion regarding the good effect of even number of teeth in the armature. For quietness it is supposed that there should be an exact number of pitches under each pole. The dynamo should be removed from the Marmon car and the particulars of the magnetic circuit sent to Mr. Royce. The two machines which fit our specifications got out for "Vulture" and "Goshawk II" should be ordered from the Rotax Company. | ||