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).
Letter to Mr. Bentley discussing the design of a dynamo, with criticisms on lubrication, bearings, and accessibility.
| Identifier | Morton\M6\ img047 | |
| Date | 10th March 1928 | |
| Le Chuadel. Saturday afternoon. 10/3/28 Dear Mr Bentley, Many thanks for one of your long & very interesting letters, the blue of the dynamo design and the two proofs on Mannie Diesels, they are all good & correct. I issued you coloured the dynamo design (Chillican) Drawing B.254, as a distinct R-R design this a.m. to be an improvement on past work, but there are certain points that I cannot understand. my criticism follows. (1) Why use felt & oilers anyway, because they do not seem desirable or ideal, only to fill & the gauze can’t well filter the felt & the only advantage seems to be lubrication or a shorter overall length. + (2) I can understand that this machine is first suitable or that if it is left to us to decide we must first learn the usual practice & then improve upon it if we have time & all done at our expense. + (3) Supposing ball bearings are specified and we must supply them, then it seems necessary that we have to make them easily removable from the dynamo Spindles, or get them in a housing that can be left behind when the end covers are removed. It is assumed that the end covers are all of a piece horizontally like the yoke. + (4) I am a little surprised that you are now buying an enclosed machine, because one thinks that a dynamo built on a bed was more open and accessible. + PTO | ||