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).
Installation drawing for clutch type 11A6.
| Identifier | ExFiles\Box 129\2\ scan0148 | |
| Date | 3rd October 1936 | |
| TITLE BLOCK: BORG AND BECK CO. LTD. LEAMINGTON SPA. ENGLAND. DESCRIPTION: INSTALLATION. CLUTCH TYPE 11A6. PART NO. 43050/2 No. OFF PER SET: 1 DRAWN: CPU 20-6-35 TRACED: CHECKED: PASSED: DATE ISSUED: 3-OCT 1936 MATERIAL: SPECIFICATION: ALTERATION No. DATE ALTERATIONS READ UP NOTES (LEFT SIDE): NOTE:- Flywheel friction face should be .35/.45 Carbon Steel, alternatively of good quality close grained cast iron. The friction face should be flat, smooth and polished and not "run out" more than .003, also the face on flywheel to which the bolting flange is attached should not be "out" more than .003". It is important to see that the crank shaft and clutch shaft are concentric in unit construction. N.B. Care must be taken to see that the driven plate is assembled in correct position, as illustrated, with the shouldered spline of hub towards the rear. Oil, Grease or Paraffin must not be allowed under any circumstances to be brought in contact with friction facings. This clutch is of the non-adjustable type. Therefore, some adjustment must be provided on the Pedal mechanism to compensate for friction facing wear. PATENT INFORMATION (BOTTOM LEFT): 'Made Under One or More of the following British Patents' 18740-33 375473 19329-33 380549 20042-33 381040 30250-33 381716 21182-34 397576 9192-34 401301 27022-34 416138 GENERAL NOTES & FINISHES (BOTTOM CENTER): All Dimensions ± .015 Unless Otherwise Stated. All Corners Free From Fraise. F = Good Finish O = Rough G = Ground ⊕ = Machine All Over Work to Dimensions. Do Not Scale. This Print supersedes any issued previous to latest alteration date. It is Our Property and must be returned upon request. This Part must not be sold to any other concern. ANNOTATIONS & DIMENSIONS: 13 3/8" O/DIA 12.625" ±.0025" P.C.DIA. BORG & BECK. CO. LTD. LEAMINGTON SPA. (in circle on clutch plate) PART No 43051 8-EQUALLY SPACED HOLES .378"/.375" DIA. REAMED. 3/8" DIA. SET SCREW TO ENTER COUNTERBORE 1/8" SPRING TYPE DRIVEN PLATE ABOVE RIGID TYPE DRIVEN PLATE BELOW 4-EQUALLY SPACED DRAIN HOLES 3/16 DIA. RECOMMENDED BEARING SKEFKO I/110453 SELF SEALING 2 5/8" O/A x 52 M/M x 15 M/M (NOT SUPPLIED BY B & B.) 6 1/4" MAX. DIA. RADIUS OF GYRATION = 4.25 INCHES THIS CLUTCH IS SUITABLE FOR A SPEED UP TO MAXIMUM OF 5000 R.P.M. ALTERNATIVE THROWOUT FORK ARRGT SALES DEPARTMENT. RELEASE POSITION: 7/16" INITIAL ENGAGED POSITION: 9/16" WEAR IN POSITION: 15/16" NOTE:- THE CENTRE OF TRUNNION SHOULD BE PREFERABLY 1/16 ABOVE SHAFT C WHEN LEVER IS IN VERTICAL POSITION WITH CROSS-SHAFT IN APPROX POSITION AS SHOWN. TO RELEASE CLUTCH APPLY PRESSURE IN THIS DIRECTION. 1/2" S.A.E. 10 SPLINE SHAFT DIMENSIONS. 3/8" S.A.E. 10 SPLINE SHAFT DIMENSIONS. 4 11/16" TO FLYWHEEL FACE TYPICAL FLYWHEEL ONLY, SHOWN 3 1/16" MAX. LIMITING FEATURE. METHOD OF RETAINING THROWOUT BEARING TO THROWOUT FORK. 1/4" DIA. DRILL POINT 3/64 DEEP MAXIMUM. CENTRE OF CROSS-SHAFT SHOULD BE AS NEARLY VERTICAL WITH TRUNNION CENTRE AS POSSIBLE BUT CHECK THAT SHAFT CLEARS CLUTCH LIMITING FEATURE WHEN THE LATTER IS ROTATED. | ||