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 showing the brake efficiency, speed, voltage, and power of a starter motor against torque.
| Identifier | WestWitteringFiles\G\June1921\ Scan60 | |
| Date | 6th June 1921 | |
| STARTER MOTOR BRAKE EFFICIENCY X.3082. R.R. STANDARD STARTER MOTOR A.{Mr Adams} X.3009. APPROX. WORKING POINT ON 40/50 CHASSIS. ELECTRICAL H.P. EFFICIENCY VOLTAGE AMPERES B.H.P R.P.M SPEED EFFICIENCY VOLTS B.H.P. E.H.P. AMPERES TORQUE (POUND INCHES.) ROLLS-ROYCE, LIMITED PRINT ROOM. 6 JUN '21 DERBY | ||