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 characteristics of a standard starter motor for the R.R Goshawk engine.
| Identifier | ExFiles\Box 35\4\ scan 151 | |
| Date | 12th February 1925 guessed | |
| STARTER MOTOR BRAKE EFFICIENCY X.3009 R.R GOSHAWK STANDARD MOTOR X4384 ELECTRICAL H.P. EFFICIENCY VOLTAGE AMPERES B.H.P. R.P.M. TORQUE (POUND INCHES) EFFICIENCY VOLTS B.H.P AMPERES E.H.P SPEED | ||