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).
Extract about gearbox noise and the results of replacing a Hyatt Bearing with a plain bush.
| Identifier | ExFiles\Box 75\1\ scan0235 | |
| Date | 23th September 1921 | |
| X.4247. Extract from Hs{Lord Ernest Hives - Chair}5/LG23.9.21. NOISE FROM GEAR BOX. X.4247. We find that removing the Hyatt Bearing and fixing a plain bush appears to improve it. The Gear Bpx is still not satisfactory as regards noise. Hs.{Lord Ernest Hives - Chair} | ||