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 discussing coil heat treatment, stress figures, and a potential design collaboration.
| Identifier | ExFiles\Box 96\2\ scan0160 | |
| Date | 19th October 1936 guessed | |
| (sheet 2) surged coil to coil removing the set and then given a low temperature heat treatment depending on wire size from 600°F to 750°F.{Mr Friese} All stress figures include Wahl's correction factor. Possibly Mr Pearson would like us to go over his design which we would be very glad to do. If possible, we would also like to have some production and broken springs. We will be pleased to cooperate with him and perhaps we will both gain some knowledge which will be to our mutual benefit. Yours very truly, T.T.Donkin. | ||