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).
Comparative table of clutch and pedal movement details for Hispano, E.A.C., and 20 HP models.
Identifier | ExFiles\Box 68\1\ scan0334 | |
Date | 6th February 1925 | |
CLUTCH AND PEDAL MOVEMENT DETAILS. DETAILS. | Hispano. | E.A.C. | 20 HP. Mean friction disc radius. | 5.91 | 5.95 | 4.72 Max. B.M.E.P. (lbs.sq.in.) | 112 | 105 | 90 Max. clutch torque (lbs.ft.) | 302 | 326 | 115 Spring load resisting (lbs.) | 2403 | 1900 | 960 Load at friction disc radius (lbs.) | 610 | 653 | 292 Conventional when slipping begins. | .125 | .170 | .152 Initial clutch pedal travel - (allowing for wear) | 5.1 | 3.1 | 2.6 Theoretically correct pedal pressure. | 23 lbs. | 38 lbs. | 44 lbs. Initial max. plate movement possible. (eliminating elasticity in linkage). | .053* | .061* | .119* Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||