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).
Confirming all production Goshawks will have a larger fan with a spring-tightened fan belt.
| Identifier | ExFiles\Box 75\3\ scan0188 | |
| Date | 23th November 1922 | |
| To BY.{R.W. Bailey - Chief Engineer} CJ. BJ. - from R.{Sir Henry Royce} Hs.{Lord Ernest Hives - Chair} EP.{G. Eric Platford - Chief Quality Engineer} X4237 R7/M23.11.22. GOSHAWK X.4237. It is understood that all production Goshawks will have the larger fan with spring tightening of the fan belt as on LeC.1629. R.{Sir Henry Royce} | ||