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 roughness at high speeds, suggesting the cause may be the propeller shaft or needle bearings.
| Identifier | ExFiles\Box 82\1\ scan0244 | |
| Date | 5th October 1933 | |
| XJ5532 [handwritten] Mr. G.W.Hancock, c/o Hotel de France, Chateauroux, Indre, FRANCE. To Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/KT.5.10.33. It occurs to us that the roughness at high speeds may be due to your propeller shaft running out of truth due to the needle bearings. You can soon tell us about this by running up the engine on the lower gears. Will you please let us know what you can about this. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||