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 brake efficiency and performance characteristics of a pre-war R. Bosch starter motor.
| Identifier | WestWitteringFiles\T\2July1929-December1929\ Scan033 | |
| Date | 25th July 1929 guessed | |
| STARTER MOTOR BRAKE EFFICIENCY R.{Sir Henry Royce} Bosch S.45 (PRE WAR.) ELECTRICAL H.P. EFFICIENCY VOLTAGE AMPERES R.P.M TORQUE (POUND INCHES) AMPERES B.H.P. E.H.P. EFFICIENCY VOLTS SPEED | ||