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).
Failure of a 2.BA bolt in the Goshawk 11 gearbox, which could lead to the selector tube sliding into the clutch.
| Identifier | ExFiles\Box 75\1\ scan0240 | |
| Date | 26th October 1931 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} c. to EP.{G. Eric Platford - Chief Quality Engineer} (X424) COPY. Hs{Lord Ernest Hives - Chair}4/LG26.10.31. GOSHAWK 11. X4219 (crossed out) X 424) GEAR BOX. We have had one of the long 2.BA bolts which are used to retain the tubes which act as guides for the selector fork, break. We consider that 2.BA bolts are not a practical size. When the bolt fails there is nothing to prevent the tube sliding right out and getting into the clutch. Hs.{Lord Ernest Hives - Chair} R.R. 2255B(100 T)(S.H. 798.10-12-30) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 | ||