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).
Performance graph for distributors showing current versus RPM for single and double lever configurations.
| Identifier | ExFiles\Box 168a\4\ img152 | |
| Date | 18th January 1940 | |
| IL TO D.75673. (COLD.) DISTRIBUTORS. PRIMARY INDUCTANCE .0089 HENRY PRIMARY CIRCUIT RESISTANCE 3.51Ω MAKE RATIO :- SINGLE LEVER .55 DOUBLE LEVER .75 APPLIED VOLTAGE :- 12 AMPS 6.0 5.0 4.0 3.0 2.0 1.0 CURRENT AT BREAK (DOUBLE LEVER) CURRENT AT BREAK (SINGLE LEVER) RMS CURRENT (DOUBLE LEVER) AVERAGE CURRENT (DOUBLE LEVER) AVERAGE CURRENT (SINGLE LEVER) RMS CURRENT (SINGLE LEVER) DISTRIBUTOR (R.P.M.) 1200 1400 1600 1800 2000 R.M.C. 18-1-40. | ||