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).
The standard clutch spring for the Goshawk 11 engine.
| Identifier | ExFiles\Box 74\2\ scan0345 | |
| Date | 9th March 1922 | |
| BY.{R.W. Bailey - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} X4244 Hs{Lord Ernest Hives - Chair}3/LG9.3.22. GOSHAWK 11. CLUTCH SPRING. The clutch spring we are using and which we recommend as standard for Goshawk 11. is G.50467. Hs.{Lord Ernest Hives - Chair} MADE AT CROXLEY | ||