'singing' noise from a Bijur dynamo and comparing it to a Lucas dynamo.
| Identifier | ExFiles\Box 38\3\ Scan185 | |
| Date | 27th August 1919 | |
| H.R. 250s (200 T) (S F) 674, 22-5-19. C. 2575 To EFC. {E. Fowler Clarke - Electrical Engineer} from R. {Sir Henry Royce} c. to CJ. c. to BN. {W.O. Bentley / Mr Barrington} X.3362. R12/G27.8.19. X.3014. X.3231.. RE BIJUR DYNAMO. X3362 The second Bijur dynamo sent to me, although the machine itself runs mechanically very well, electrically it sings much more so than the first one. It was also noticed that the Lucas dynamo on 1 EX made a singing noise. This can, and should be avoided in the deisgn. R. {Sir Henry Royce} | ||
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).