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).
Graph showing the variation of vibration with ignition advance for a liquid-cooled single-cylinder sleeve valve engine.
| Identifier | ExFiles\Box 134\1\ scan0108 | |
| Date | 13th October 1938 | |
| LIQUID COOLED SINGLE CYLINDER SLEEVE VALVE 4.2" BORE VS{J. Vickers} 2 VARIATION OF VIBRATION WITH IGNITION ADVANCE ENGINE RUN:- 4000 R.P.M. 5.6" BOOST RANGE OF VIBRATION INCHES x 10^-3 DEGREES ADVANCE PLUG INSERT CENTRE HEAD HEAD FLANGE CRANKCASE LR{Mr Ellor}/HWS/SGL 13/10/38 | ||