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).
The conversion to an electrically controlled friction type gearbox.
| Identifier | ExFiles\Box 6\2\ 02-page184 | |
| Date | 28th May 1931 | |
| HS.{Lord Ernest Hives - Chair} } FROM R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} } X1523 R11/M28.5.31. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to HY.{Tom Haldenby - Plant Engineer} RHC.{R. H. Coverley - Production Engineer} 4SP.{Mr Spinney} - DOUBLE TOP. X.7310. X.523. This should be ready for converting to electrically controlled friction type in the present box in the course of a few days. It promises to be simple and robust, and workable with a two speed box; if good we can redesign much simpler and lighter. R.{Sir Henry Royce} | ||