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 showing Open Circuit Volt-Speed and Short Circuit Ampere-Speed curves for the primary windings of Watford EW6 Magnetos.
| Identifier | ExFiles\Box 65\3\ scan0209 | |
| Date | 19th January 1928 | |
| X7791 No. 100081. No. 99802. No. 99171. O.C. VOLTS S.C. AMPERES. OPEN CIRCUIT VOLT-SPEED AND SHORT CIRCUIT AMPERE-SPEED CURVES OF PRIMARY WINDINGS OF WATFORD EW6 MAGNETOS. AMPERES ----- VOLTS. _____ SPEED r.p.m. H.E.W 19-1-28 | ||