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 ampere output curves of an EAC Dynamo under various conditions.
| Identifier | WestWitteringFiles\L\Jan1924-March1924\ Scan163 | |
| Date | 11th March 1924 | |
| AMPERE OUTPUT CURVES OF R.R. E.A.C. DYNAMO UNDER VARIOUS CONDITIONS OPERATING VOLTAGES 15.35 15.10 14.85 14.60 14.35 AMPERE OUTPUT 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 0.5 0 DYNAMO SPEED (R.P.M.) 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 10 15 20 25 30 35 40 45 50 55 60 CURVE LABELS: STANDARD LUCAS 75°C OUTPUT AT 73°C OUTPUT AT 83°C (ENGINE HOT) OUTPUT MINUS IGNITION CURRENT AT 83° SPECIFIED MINm OUTPUT CURVE AT 75°C FIELD AMPERES AT 73°C FOOTNOTE: CHASSIS M.P.H. WITH 51/13 AXLE 33x5 EFFECTIVE TYRE DIA. AND 1.2 DYNAMO DRIVE RATIO HANDWRITTEN NOTES: E.A.C. CHAD 11-3-24 A.F.C/F/24 | ||