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).
Testing of a Lucas two-way switch on an experimental chassis and the decision to postpone standardization.
| Identifier | ExFiles\Box 61b\3\ scan0293 | |
| Date | 8th December 1930 | |
| X4520. X6072. Roy.{Sir Henry Royce} from EFC. c. Cx{Major Len W. Cox - Advertising Manager}/Hdy.{William Hardy} EFCl/AD8.12.30. X.4520. LUCAS TWO-WAY SWITCH FOR CENTRAL LAMP SCHEME. In answer to your enquiries regarding the above we have put the switch on experimental chassis 20-EX and up to the present it has run 2,552 miles satisfactorily. As I think we previously informed you, E.{Mr Elliott - Chief Engineer} has informed us of R's disfavour regarding the use of the Lucas switch see copy of E4/M23.5.30 attached, and of their intention to give us an R.R. design for this unit. In any case we cannot standardise the Lucas two-way switch until considerable further running has been done. EFC. | ||