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 drive shaft couplings and a proposed design change to use serrations.
| Identifier | ExFiles\Box 149\2\ scan0126 | |
| Date | 21th September 1936 | |
| FILES. X1265 21st Spetember, 1936. Up to the present, the drive shaft had a knurled finish and by an interference fit the coupling which had a plain bore was pressed on. Due possibly to inaccuracies on limits of pumps tighter than others several drives have failed in production. We think it more likely to be the former as there has not been an experimental failure. In the proposed new arrangement both the shaft and the coupling have definite serrations (E.88348). Will instruct for above on future and existing units. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||