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 comparing the B.H.P and Torque against R.P.M for three different starter motors.
| Identifier | ExFiles\Box 50\2\ Scan121 | |
| Date | 26th April 1920 guessed | |
| II B.H.P & TORQUE R.P.M. R.P.M. OF 3 STARTER MOTORS. Y-AXIS (Left): B.H.P, Ft./LBS. SCALE (BHP): 0, 1, 2, 3, 4 SCALE (Torque): 0, 10, 20, 30, 40 X-AXIS (Bottom): R.P.M. SCALE: 0, 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000 CURVE LABELS: BIJUR TORQUE BOSCH TORQUE W'HOUSE TORQUE BOSCH B.H.P WESTINGHOUSE B.H.P. BIJUR B.H.P. | ||