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 power characteristics of Bijur and Westinghouse starter motors.
| Identifier | ExFiles\Box 23\2\ Scan083 | |
| Date | 7th June 1921 | |
| CURVES OF POWER CHARACTERISTICS. LATEST BIJUR AND WESTINGHOUSE STARTER MOTORS WTS OF MOTORS [WITHOUT GEAR] R-R.{Sir Henry Royce} 20 LBS BIJUR. 30 LBS W'HOUSE. 20 LBS CURVES ---- R-R ----- W'HOUSE - - - - - BIJUR AXIS LABELS: EFFICIENCY % B.H.P. V.{VIENNA} BATT. MOTOR R.P.M. ENGINE R.P.M. AMPERES CURVE LABELS: SPEED TORQUE B.H.P. ASSUMED VOLTAGE DROP KEUFFEL & ESSER CO., NEW YORK, NO. 334 C.R.L. By JUNE 7 '21 | ||