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).
Technical drawing of a Borg & Beck Type 9 A1 model clutch assembly with cross-section and component dimensions.
| Identifier | ExFiles\Box 128\2\ scan0118 | |
| Date | 28th January 1932 guessed | |
| SHEET 3 C-1A-6 3/4" +.0005" REAM -.001" 6-HOLES EQUALLY SPACED 11 5/16" O.D. OF COVER 10.625" ±.002" BOLT CIRCLE BORG & BECK CO LTD LEAMINGTON SPA. ENG BORG & BECK CLUTCH SPIN END PATENT PENDING TYPE 9-A1 MODEL Borg & Beck SPECIFICATIONS (TYPE 9 A-1 UNIT) 1. Torque Capacity. 125 lbs. ft. for reasonably smooth services 2. Total friction area 88.4 sq. ins. 3. Release pressure 25-30 lbs. 4. Recommended release travel 9/32" 5. Total wear allowance on linings, sufficient for the life of the average private car, is .065" 6. Clutch housing may be ventilated 8. Total weight with drive plate is 15 lbs. 9. The clutch has been balanced within 1/4 oz ins. RELEASE POSITION INITIAL ENGAGED POSITION WEAR-IN POSITION 5/8" C'BORE RECOMMENDED 1" C'BORE 2 1/8" 3/8" 7/8" 1 9/16" 2 13/16" MAX 5/8" 5/16" .554 2 16/32" 1 1/4" S.A.E - 10 SPLINES SHAFT DIMENSIONS 1.247" +.000"/-.001" 1.006" .191" SECTION A-A METHOD OF RETAINING THROWOUT BEARING TO THROWOUT FORK 1/2" LEX MOTOR CO. LTD 125, MARCHALL STREET LONDON, W.1. | ||