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).
Blueprint for an exhaust valve seat.
| Identifier | ExFiles\Box 88\4\ scan0037 | |
| Date | 7th November 1933 | |
| V 1653. CYL. HEAD DIMS. MACHINE TO GIVE .010 DIMS CLEARANCE VALVE SEAT. (EXHAUST) N.M.C. BENTLEY. 6.OFF TURN. 1.492 DIA. SCREW. 1.500. 20 TPI: R.H. 1.375 DIA. +-5 1.300 DIA +2 1.425 DIA +2 1.645 DIA. -5 .450 -10 .250 .140 +-15 45º 30º bHP ROLLS-ROYCE, LTD. PRINT ROOM 7 NOV 1933 DERBY. | ||