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 of open circuit volt-speed and short circuit ampere-speed curves for Watford and Lucas magnetos.
| Identifier | ExFiles\Box 65\3\ scan0043 | |
| Date | 11th June 1927 | |
| O.C. VOLTS S.C. AMPERES 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 ERG MAGNETOS. SPEED r.p.m. DATED 11 JUN 1927 | ||