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).
Urgent arrangement of a fabric coupling on a gearbox shaft and specifications for motor coils.
| Identifier | Morton\M3.2\ img006 | |
| Date | 10th January 1925 | |
| TO EFC. HC. E.{Mr Elliott - Chief Engineer} AJS. Copy to CJ. B.I. Copy to RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} Copy to BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} SEQUENCE STARTER. R1/M10.1.25. X8650 x4168B We seem a long time in hearing more of this. It is urgent because it permits of the permanent arrangement of fabric coupling on the gearbox shaft, which is so necessary. Also whether the spring is effective in preventing the shock, and also if it gives the necessary flexibility to keep the gear in mesh driving all the time. From some of the notes I remember some remarks about a resistance. There should be no external resistances except perhaps the small high resistance to reduce the sparking at the contacts. The actuating coil and the auxiliary motor coils (A.F.C.) should be wound each to give suitable strength of magnetism, and as far as I remember it seemed to me that the auxiliary field coils should be wound finer, and the actuating coil coarser than the first attempt. I am trusting to Mr. Clarke to get these to their best proportions. R.{Sir Henry Royce} | ||