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).
Schematic drawing for raised valve rockers for a 20 HP engine.
| Identifier | ExFiles\Box 106\5\ scan0006 | |
| Date | 11th April 1927 | |
| SCHEME 912., .283 CAM LIFT, EXISTING ROCKER MODIFIED ON RUBBING FACE ONLY. SCALE 2/1., .600 RAD., .050, .336 VALVE LIFT, PATH OF CONTACT WITH VALVE STEM HEAD DUE TO ROCKERS CHANGE OF CENTRE, STROKE OF PUSHROD RAISED .225, SCALE 10/1 & 2/1., VALVE ROCKERS RAISED .225. (20 H.P.), ROLLS-ROYCE LIMITED, PRINT ROOM, 11 APR 1927, DERBY, COPY | ||