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).
Secret internal report on the performance and improvements of the SS and 20 HP electrical starter.
| Identifier | ExFiles\Box 64\4\ scan0227 | |
| Date | 25th March 1929 | |
| Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} EFC. c. to SG.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} C. SECRET x7625 R8/M25.3.29. SS.{S. Smith} AND 20 HP. ELECTRICAL STARTER. X.7625/55. X.5650 SS{S. Smith} The starter was a feature of anxiety. This has been proved to be quite satisfactory. Its silence now only depends on getting good gears, which should also be cut with ample clearance in the teeth, as tight gears will on any starter cause trouble. We hope and believe this is in advance of anything that has been produced. 20 HP. We have very much improved the 20 HP. by our scheme of slipping friction pinion, which now follows a logical theory which should give greater uniformity of action and reliability. R.{Sir Henry Royce} | ||