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).
Instructions for new ignition timing markings on the flywheel for the Spectre.
| Identifier | ExFiles\Box 91\1\ scan0062 | |
| Date | 9th September 1935 | |
| To By: x300 SpectreCodename for Phantom III. In conjunction with the correct valve timing marks on the flywheel to E.87329, will you please include the following markings for the ignition timing. B.A.I. B. side hand control advanced ignition setting, 15º before A1.TDC. A.A.I. A.{Mr Adams} side hand control advanced ignition setting, 13º before A1.TDC. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||