Graph showing the brake efficiency and performance curves for a Type S.C. starter motor on a Goshawk chassis.
| Identifier | ExFiles\Box 51\5\ Scan175 | |
| Date | 31th October 1921 guessed | |
| STARTER MOTOR BRAKE EFFICIENCY X 4342 C.AV MOTOR TYPE S.C. APPROX. WORKING POINT ON GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) CHASSIS Y-AXIS LABELS: ELECTRICAL H.P EFFICIENCY VOLTAGE AMPERES B.H.P R.P.M X-AXIS LABEL: TORQUE (POUND INCHES) CURVE LABELS: EFFICIENCY AMPERES VOLTS B.H.P E.H.P SPEED | ||
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).