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 the output performance curves of Goshawk and Lucas E.875 dynamos versus RPM.
| Identifier | WestWitteringFiles\J\December1922\ Scan72 | |
| Date | 7th December 1932 | |
| Output Curves of R.R. Goshawk Dynamos and Lucas E.875 dynamo as found on old bench rig. AXIS LABELS: Y-Axis: AMPERE OUTPUT X-Axis: DYNAMO R.P.M. Top Y-Axis: OPERATING VOLTAGES. [Hot] CURVE LABELS: - Lucas E.875 Hot. - Short armature I. Winding Hot. - Expl. 18°c. - Expl. 86°c. - Early expl. 77°c. Std brush setting. - Early expl. 80°c. - Expl. 14°c. - Specified performance [Hot] (dashed line) - Field currents TOP RIGHT CORNER: E.P.C / 7/12/32 AH 4. Dec. 1932. | ||