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 load loss due to friction for Spectre II independent suspension dampers.
| Identifier | ExFiles\Box 95\3\ scan0106 | |
| Date | 5th June 1938 | |
| SPECTRECodename for Phantom III II IND: SUSP'N DAMPERS LOAD LOSS DUE TO FRICTION ETC: VALVES REMOVED, MEASURED AT LEVER RADIUS OF 9.425". TOTAL PISTON MOVEMENT 1.750". Graph 1 (Top): N.S.F. EFFECTIVE SPRING LOAD LEGEND: BALANCE READINGS WITH LIGHT SPRING AFTER DISCOUNTING SPRING LOAD Graph 2 (Bottom): O.S.F. EFFECTIVE SPRING LOAD AXIS LABELS: Y-AXIS: PISTON MOVEMENT FROM MAX REBOUND - INS X-AXIS: EFFECTIVE LOAD AT LEVER - LB | ||