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).
Cause of noise in the 'Goshawk II' gearbox, considering the reverse pinion and ball bearings.
| Identifier | WestWitteringFiles\G\September1921\ Scan16 | |
| Date | 9th September 1921 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CL. ORIGINAL. X4247 RE "GOSHAWK II" 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} | ||