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).
The loosening of weights and their subsequent replacement and testing over thousands of miles.
| Identifier | ExFiles\Box 118\2\ scan0321 | |
| Date | 31th October 1936 | |
| 6 B IV. August - Oct. 1936. Original weights became loose at approx 2500 mls. Same weights were tightened up but were again slightly loose after a further 8286 miles. Antimonial weights then fitted and ran 6134 miles, satisfactorily at the completion of this mileage. | ||