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).
Adjusting engine timing to reduce torque reaction vibrations.
| Identifier | ExFiles\Box 65a\3\ scan0304 | |
| Date | 3rd September 1931 guessed | |
| Files. 24-GX. X7770. X7008. Original timing, degrees from standard - No.1 cyl. I.O. I.C. E.O. E.C. 1ºL. O.K. 1ºL. O.K. Made one tooth later approx. 7½º for the attention of Mr.Robotham. This is the result of a successful test to reduce torque reaction vibrations by altering the timing one tooth later. Rn.{Mr Robinson} | ||