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 for a Vauxhall Valve Tappet.
| Identifier | ExFiles\Box 10\3\ 03-page029 | |
| Date | 19th June 1937 guessed | |
| FACE MUST BE GROUND SMOOTH & TRUE WITH AXIS OF BODY WITHIN .0015 INDICATOR READING. .020 CHAMFER AT 45° DRILL - 51/64 COUNTER DRILL CASTING DIMENSIONS. 2 9/16 1 1/64 SOLID 1 1/16 - 1/8 DEEP CHILL MUST BE SMOOTH AS POSSIBLE 1/16 CHILL AFTER MACHINING FINISH DIMENSIONS 2 1/2 1 3/4 1/8 7/8 25/32 120° +0° -2° 11/16 +0 -.013 1/16 MAX FLAT ALLOWABLE 3/16 DRILL 90° +1° -1° .010 / .005 CHAMFER AT 45° GRIND .9895 / .989 NOTE - SELECT FOR UNIFORM MIN. CLEARANCE IN CYL CASE. VAUXHALL VALVE TAPPET. M/C ALL OVER. | ||