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).
Shaft failure indicated by the shape of serrations when a lever was removed.
| Identifier | ExFiles\Box 6\6\ 06-page153 | |
| Date | 6th February 1937 | |
| - 2 - RPS.2/VS.{J. Vickers}6.2.37. The failure of the shaft at the root of the radius was clearly indicated by the shape of the serrations when the "clearance" lever was removed. RPS. | ||