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 graph for a Smith Motor Type S.S.
| Identifier | ExFiles\Box 51\5\ Scan130 | |
| Date | 10th October 1921 guessed | |
| X43225 S.A.S. SMITH MOTOR TYPE S.S. AMPERES 60 80 100 120 140 160 180 VOLTS 0 2 4 6 8 10 12 14 16 SPEED (R.P.M) 0 300 600 900 1200 1500 1800 2100 2400 HORSE POWER 0 .2 .4 .6 .8 1.0 1.2 1.4 1.6 TORQUE (POUND INCHES) 0 10 20 30 40 50 60 70 80 | ||