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).
Record of modifications to the carburetter, pistons, and control systems for S.EAC.II.Unit -12.EX.
| Identifier | ExFiles\Box 65a\1\ scan0070 | |
| Date | 17th March 1927 | |
| -2- S.EAC.II.Unit -12.EX. Carburetter Modified H & L. Speed Valve (with 4 grooves instead of 3) E.75287/B, otherwise to L.O.P. E.75598. 2.3.27. Piston 3 - E.75477 Pére Magnesium Pistons fitted to No.4-5-6. Cylinder. 3 - Existing E.75540 Pistons with additional slot in skirt fitted to No.1-2-3. Cylinder. 2.3.27. Control Magneto Return Spring to Scheme 885. 10.3.27. | ||