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 ampere-output vs speed curves for a Delco Dynamo from a Marmon car.
| Identifier | Morton\M1.7\ img010 | |
| Date | 20th October 1921 guessed | |
| AMPS OUTPUT R.P.M. AMPERE-OUTPUT - SPEED CURVES OF DELCO DYNAMO FROM MARMON CAR Figures on curves give operating voltages. SPEC'N 8.55 8.2 7.8 7.6 7.9 7.55 7.4 7.0 7.3 6.6 7.05 6.2 6.8 STARTING COLD FULLY HOT | ||