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).
Data table of calculations for Test No. 8 on a Goshawk engine.
| Identifier | ExFiles\Box 75\3\ scan0221 | |
| Date | 31th December 1924 | |
| 23 Test No. 8 Contd. Goshawk (CALCULATIONS). Extra on load. Volts. Amperes. Armature resistance (ohms). Ohmic volts light. Back E.M.F. Power delivered. Watts. H.P. (H). % Slip. Engine speed. 1.74 | 3.27 | .532 | 1.03 | 60.66 | 198.5 | .266 3.07 | 4.68 | .720 | 1.42 | 83.49 | 391.0 | .524 2.76 | 6.10 | .452 | .905 | 108.86 | 664.0 | .890 3.79 | 7.84 | .483 | .995 | 134.34 | 1052 | 1.41 5.32 | 10.00 | .532 | 1.12 | 158.88 | 1589 | 2.13 31.12.24. | ||