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).
Diagram of a Borg & Beck Type 7 1/4 RD clutch assembly.
| Identifier | ExFiles\Box 128\2\ scan0116 | |
| Date | 28th January 1932 guessed | |
| IT KD-C INITIAL ENGAGED POSITION RELEASE POSITION WEAR-IN POSITION 9 1/2" O.D. OF COVER 8.750"±.002" B. C. .251"±.001" REAM 2 HOLES 11/32" DRILL 6 HOLES IN COVER EQUALLY SPACED BORG & BECK CO. LTD. LEAMINGTON SPA PATENTS PENDING TYPE 7 1/4 RD. 2 5/16" EXTREME RELEASE POSITION 2 9/32" .503" DIA. METHOD OF RETAINING RELEASE BEARING TO THROWOUT FORK S.A.E. 10 SPLINE SHAFT DIMENSIONS. .807" +.000"/-.003" 1.125"±.001" .850"±.001" 1.00" .966" | ||