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 showing the results of a starter motor brake efficiency test for a 45 slot armature.
| Identifier | ExFiles\Box 34\3\ Scan158 | |
| Date | 18th April 1918 | |
| R.R. STARTER MOTOR BRAKE EFFICIENCY TEST. X.2642 (45 SLOT ARMATURE.) FIELD COILS TWO SERIES TWO PARALLEL. ELECTRICAL H.P. EFFICIENCY VOLTAGE AMPERES B.H.P. R.P.M. TORQUE (POUND INCHES.) SPEED EFFICIENCY VOLTS AMPERES B.H.P. E.H.P. SUPPLIED TO MOTOR ROLLS-ROYCE LTD 18 APR 1918 DERBY | ||