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).
Specifications for the Borg & Beck Clutch.
| Identifier | ExFiles\Box 129\2\ scan0089 | |
| Date | 1st November 1935 | |
| X1110 1st November, 1935. Borg & Beck Clutch. 10.A.3 Clutch, fitted with spring cups and 9 brown 147/155 lbs. springs. Spigot location, 5 oz. ins. limit of out of balance. O/dia. of cover flange machined to 12.314" - 12.310". Knife edge fulcrums and plain end levers incorporated. Driven plate fitted with F.F.1. facings, offset hub, 1 1/4" dia. 10 spline fitting, cadmium plated, spring flex centre having 8 red (134/149 lbs.) springs. 10.A.3 clutches, complete to specification BB/242. | ||