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).
Proposal for an experimental test on a Phantom III dynamo armature with enamelled and paper-covered wire.
| Identifier | ExFiles\Box 168a\3\ img273 | |
| Date | 27th January 1936 | |
| 56142 c. Hs{Lord Ernest Hives - Chair}/Wst. BY/RD1/W.27.1.36. 'PHANTOM III'. DYNAMO ARMATURE. Further to our memo BY/RD3/W.21.1.36, we propose to instruct a test on a dynamo having enamelled and paper covered wire on the field winding. This will enable us to increase the armature diameter by .125". This extra diameter together with a reduction in conductor size from .048" 18 S.W.G. to .040" 19 S.W.G. will enable 36 slots to be used, 12 conductors per slot, 19 S.W.G.wire. The width of tooth at its root will then become .0875". This arrangement represents an experimental proposal as we are not in favour for production of a reduction in size of the armature conductors below .048" dia. BY/RD | ||