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 curves for an EAC dynamo under various conditions.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan88 | |
| Date | 11th March 1924 | |
| AMPERE OUTPUT CURVES OF R.R. EAC DYNAMO UNDER VARIOUS CONDITIONS OPERATING VOLTAGES 15.35 15.10 14.85 14.60 14.35 14.10 13.85 13.60 AMPERE OUTPUT 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 FIELD AMPERES 2.5 2.0 1.5 1.0 .5 0 DYNAMO SPEED (R.P.M.) 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 CHASSIS M.P.H. WITH 15/52 AXLE 33x5 EFFECTIVE TYRE DIA. AND 1 1/2 DYNAMO DRIVE RATIO 10 15 20 25 30 35 40 45 50 55 60 CURVE LABELS: STANDARD LUCAS 75 °C AVERAGE PERFORMANCE AT 73°C E.A.C. B. AT 70°C OUTPUT AT 83°C (ENGINE HOT) E.A.C. B. AVERAGE OUTPUT AT 83°C MINUS IGNITION CURRENT AVERAGE PERFORMANCE AT 83°C SPECIFIED MINm OUTPUT CURVE AT 75°C FIELD AMPERES AT 73°C ANNOTATIONS: C.A.P. 11-3-24 E.F.C. 4/3/24 E.P.C. 7/3/24 | ||