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).
Test data for starting a Goshawk engine using a standard starter motor under cold and hot conditions.
| Identifier | ExFiles\Box 50\2\ Scan091 | |
| Date | 15th April 1921 | |
| R.H. 253a (100 T)/S H.{Arthur M. Hanbury - Head Complaints} 788. 10-12-20 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2347 X.4298 95215. EFC. 15.4.21. FD.{Frank Dodd - Bodies}88 X.4298. X.4342. X.3534. X.3082. STARTING OF GOSHAWK BY MEANS OF STANDARD R.R. STARTER MOTOR. COLD | Motor volts. | Amps. | R.P.M. speed. | Initial kick. | |--------------|-------|---------------|---------------| | 9.5 | 96 | 85 | 125 amps. | | 9.5 | 96 | 85 | -- | HOT | 10.65 | 47.0 | 140 | 80 amps. | | 10.65 | 48.0 | 145 | -- | Reduction ratio 12 : 1 Torque about 40 lb-inches. i.e. 480 on engine. LF. | ||