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).
Graph comparing Volt-Speed and Ampere-Speed curves for Watford and Lucas magnetos.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 178 | |
| Date | 11th June 1927 | |
| O.C. VOLTS S.C. AMPERES SPEED r.p.m. LUCAS No 53 WATFORD No 98201 VOLTS AMPERES. OPEN CIRCUIT VOLT-SPEED AND SHORT CIRCUIT AMPERE - SPEED CURVES OF PRIMARY WINDINGS OF WATFORD E06 (SLEEVELESS) AND LUCAS ER6 MAGNETOS. C.E. ROOM 11 JUN 1927 DERBY | ||