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).
Design drawing for a camshaft showing dimensions and cam positions.
| Identifier | ExFiles\Box 93\5\ scan0082 | |
| Date | 25th May 1938 | |
| Top Right Corner: ExS. 767 INVESTIGATION DESIGN ONLY FOR FINISHED DRAWING SEE ExS 768 Notes on Drawing: THE EXHAUST CAM LEADS ITS INLET CAM BY - 112° IN EACH CASE THE NUMBERS ON C/L OF CAMS CORRESPOND WITH THE NUMBERS IN SECTIONAL ELEVATION PERMISSIBLE ANGULAR ERROR OF ANY ONE CAM - 1° POSITIONS OF CAMS LOOKING IN DIRECTION OF ARROW .900 DIA - CONSTANT BETWEEN CAMS AND BEARINGS VIEW OF CAM SHAPE - SCALE FULL SIZE Labels & Dimensions: Cam Labels: 1IN, 1EX, 2EX, 2IN, 3IN, 3EX, 4EX, 4IN, 5IN, 5EX, 6EX, 6IN Dimensions: 2.225 DIA, .050 R, .350, .800, .200 RAD, 1.725 DIA, 60°, 1.500 DIA, 1.950, .400, 3.700, 6.050, 4.450, 7.800, 8.600, 10.250, 12.000, 12.750, 14.250, 16.600, 17.400, 19.050, 20.800, 23.150, 24.900, 25.700, 27.275, .850, 1.450 DIA, .250 RAD, .825, .150 RAD, 1.425, 3.000, 1.100 DIA (Tolerances are generally +.25 -.0 or +.25 -.25) Title Block (Bottom Left): ITEMS NO.: 1 SCD. 663 DRAWN BY: AEH 25-5-38 TITLE: CAMSHAFT (CASTING) DRAWING MATERIAL: MONIKROM SPEC. NO.: 1 ISSUED ON: Wraith II Bentley V SECTION: 5090 Stamp (Bottom Right): ROLLS-ROYCE LTD. PRINT ROOM 17 JUN 1938 DERBY. ExS. 767 Handwritten Note (Faint, Bottom Right): USED ON 4¼ Litre ENGINE BENTLEY MK.V P.100 B.U. | ||