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 curve graph for a Westinghouse Starting Motor, Frame 56 C.G.
| Identifier | ExFiles\Box 23\2\ Scan082 | |
| Date | 26th March 1921 | |
| WESTINGHOUSE STARTING MOTOR FRAME 56 C.G. 5" O.D. PERFORMANCE CURVE . CURVE # 102167 EN T.B. 2399, P. 68 JE Trestle 3-26-21 Curve 102167 CORNELL CO-OPERATIVE SOCIETY, ITHACA, N.Y. AXES: R.{Sir Henry Royce} P. M.{Mr Moon / Mr Moore} TORQUE LBS. FT. & VOLTS LINE AMPERES HORSE POWER EFFICIENCY % CURVES: EFFICIENCY RUNNING VOLTS HORSE POWER RUNNING TORQUE SPEED LOCKED TORQUE LOCKED VOLTS VALUES: Left Y-axis (RPM): 2400, 2000, 1600, 1200, 800, 400, 0 Left Y-axis (Torque/Volts): 12, 10, 8, 6, 4, 2 Right Y-axis (HP): 2.8, 2.4, 2.0, 1.6, 1.2, .8, .4 Right Y-axis (Efficiency %): 60, 50, 40, 30, 20, 10 X-axis (Amperes): 0, 50, 100, 200, 300, 400 | ||