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).
Investigating noise from a Goshawk 11 gearbox, questioning the reverse pinion or ball bearings as the cause.
| Identifier | ExFiles\Box 75\1\ scan0233 | |
| Date | 9th September 1921 | |
| To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} c. to CJ. X4247 R9/G14.9.21. X.4247 - RE. GOSHAWK 11. GEAR BOX. We should be glad to know if you think the noise is due to the reverse pinion. You will remember that you thought it might be due to the ball bearings. If it is the ball bearings, I should conclude that they were too tight to be fitted up. I would like the Works also to determine whether Hyatt bearings give quieter gears. R.{Sir Henry Royce} | ||