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).
Trial of a modified, less noisy TH65 dynamo for Phantom models.
| Identifier | ExFiles\Box 68\4\ scan0013 | |
| Date | 27th June 1927 | |
| EFC c.By X8672 Mx{John H Maddocks - Chief Proving Officer}5/T27.6.27. re Phantom Dynamos - EFC3/J9.6.27. The originally noisy dynamo TH65 to which you fitted a 28 slot armature has been tried on 3 different chassis, and is now quite a good machine for absence of electrical noise. The brushes are rather noisy and appear to require rebedding. The output is rather high. It will probably be advisable for us to have a number of these dynamos to try. [Stamp]: RECEIVED JUN 27 1927 [Initialed]: Hs{Lord Ernest Hives - Chair} [Initialed]: Mx.{John H Maddocks - Chief Proving Officer} | ||