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 load-lift curves for F.X. inlet valves with lubricated triple springs.
| Identifier | ExFiles\Box 43\3\ Scan107 | |
| Date | 4th January 1927 | |
| LOAD-LIFT CURVES FOR F.X. INLET VALVES. TRIPLE SPRINGS - LeC.2281. ALL PARTS LUBRICATED SPRING PRESSURE lbs. VALVE LIFT. INS. LIFTING. LOWERING. STAMP: ROLLS ROYCE LTD / DERBY / -4 JAN 1927 / C | ||