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).
Continued note on running a component at 340 revolutions for half an hour.
| Identifier | Morton\M2.4\ img036 | |
| Date | 1st May 1925 guessed | |
| Contd. -2- Ref/731.b.22. on the Cadmium. The fact that we can run boiling at 340 revs. for half an hour without any hums or without form of wear is all we can expect. Rs.{Sir Henry Royce's Secretary} | ||