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 test data for a motor with field coils in parallel under cold and hot conditions.
| Identifier | ExFiles\Box 61b\3\ scan0138 | |
| Date | 11th August 1920 | |
| -3- Contd. MOTOR WITH FIELD COILS IN PARALLEL. (COLD). | Test. | Speed of engine. R.P.M. | Motor speed. | Volts. | Amps. | Temp. of cyl: | Temp. of radiator. | Remarks. | |---|---|---|---|---|---|---|---| | 1 | 60 | 1398. | 9.85 | 124 | 18.5°C | 18.5°C | Volts taken across battery terminal | | 2 | 60 | 1398 | 9.65 | 120 | " | " | " | | 3 | 60 | 1398 | 9.55 | 120 | " | " | " | Motor volts would be 8.7 Motor torque (chain wheel) 38 Engine torque 798 lb-inches. (HOT). | 1 | 110 | 2563 | 10.92 | 80 | 80°C | 90°C | Volts taken across battery terminal | |---|---|---|---|---|---|---|---| | 2 | 110 | 2563 | 10.86 | 80 | 80°C | 90°C | " | " | | 3 | 110 | 2563 | 10.77 | 80 | 78°C | 88°C | " | " | Motor volts would be 10.15 Motor torque (chain wheel value) 18 lb-inches. Engine torque 378 lb-inches. C. A.{Mr Adams} P. R R 285A (100 T) S (L.001) Y596 H & S. 149. 11-8-20 (G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 | ||