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).
Material specification error and subsequent correction for the Peregrine transmission coupling.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page23 | |
| Date | 13th January 1933 | |
| E.{Mr Elliott - Chief Engineer} a.{Mr Adams} Hs.{Lord Ernest Hives - Chair} c. RHC{R. H. Coverley - Production Engineer} No. 140. X137. BY.{R.W. Bailey - Chief Engineer}/G.13.1.33. PEREGRINE TRANSMISSION. Referring to E.2/HP.12.1.33. the coupling behind the gearbox in the form of a toothed drive we specified originally in error in nickel steel, but about a month or so ago I noticed that this was the case and had both of these altered to C.H.N.S. We admit that the original instruction was a mistake, but it was an oversight and not intentional. Now, in addition to having both in C.H.N.S., I have specified that one must be ground and the other (the internal member) lapped, so as to obtain a close fit. BY.{R.W. Bailey - Chief Engineer} | ||