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).
Investigation design drawing for a camshaft gearwheel.
| Identifier | ExFiles\Box 93\5\ scan0083 | |
| Date | 17th June 1930 | |
| TOP DATA TABLE: No OF TEETH: 54 DIAMETRAL PITCH: 10- NORMAL PITCH: .31416- CIRCULAR PITCH: .41539. PITCH DIA: 7.140- LEAD: 25.9302- ANGLE OF SPIRAL: 40° 51' 44" HAND OF SPIRAL: RH{R. Hollingworth}- ANGLE OF OBLIQUITY: 14½°- CHORDAL THICKNESS: .15707. CORRECTED PITCH DEPTH: .0909- SPECIAL ADDENDUM: .090- DRAWING NOTES & DIMENSIONS: EXS. 771 INVESTIGATION DESIGN ONLY. 7.330 DIA 6.910 DIA (COMMENCEMENT OF CHAMFER ON BOTH SIDES) 6.600 DIA 2.100 DIA (RAD END OF SPLINES) 1.750 DIA .075 R .375 R .625 RAD .150 RAD .075 .050 R .025 RAD .500 DIA .625 DIA 2.125 DIA 2.375 DIA 4 HOLES .2656 DIA 4.250 P.C.DIA 1.175 P.C.DIA 5.625 P.C.DIA 6 HOLES - EQUALLY - SPACED - 1.250 DIA .050 RAD 4 HOLES - EQUALLY SPACED - .125 DIA X .125 DEEP HOLES UP TO .500 DIA ARE TO BE DRILLED ON THIS PITCH CIRCLE IF NECESSARY, FOR BALANCING PURPOSES. FINISHED GEAR TO BE TESTED IN 3 PLACES FOR ECCENTRICITY OF TEETH. ALLOWABLE ERROR .0015 ON DIA. CHAMFER ON ACUTE ANGLE SIDE OF TEETH. TITLE BLOCK: MACHINE WHERE MARKED THUS III.III.III. SCHEME No.: SCD. 683 ISSUE No.: 1 DRAWN BY: A.E.D TITLE: CAMSHAFT GEARWHEEL MATERIAL: MONIKROM No. OFF: 1 USED ON: BENTLEY SECTION: 5090 STAMP: ROLLS-ROYCE, LTD. PRINT ROOM 17 JUN 1930 DERBY. EXS. 771 | ||