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).
Request to test a 'Hykro' crankshaft against a standard V.C.M. shaft for wear over 15,000 miles.
| Identifier | ExFiles\Box 85\5\ scan0121 | |
| Date | 3rd November 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} 217 Rm{William Robotham - Chief Engineer}/Swd1.26/JH.3.11.36. Bentley. Will you please put in hand a "Hykro" crankshaft with a view to running a 15,000 miles test. We are interested to compare it for wear against the standard V.C.M. shaft. The surface hardness figures are, Hykro 930, V.C.M. 640 when in hardened state. An extra hole to be drilled in each journal opposite to existing. Rm{William Robotham - Chief Engineer}/L.H.Swindall. | ||