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).
Weight specification for the Goshawk unit.
| Identifier | ExFiles\Box 107\4\ scan0053 | |
| Date | 12th February 1924 | |
| X4538 12.2.24. GOSHAWK WEIGHT. Weight of Goshawk Unit complete - 640 lbs. Standard unit, with starter generator exhaust manifold change speed & brake. DICKINSON BOND 1804 | ||