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).
Diagram showing a self-adjusting tappet and a crankshaft damper.
| Identifier | ExFiles\Box 179\2\ img211 | |
| Date | 4th February 1932 | |
| SELF ADJUSTING TAPPET PIERCE DIAMOND BORED AIR ESCAPES HERE SPRING ABOUT 10 LBS. .032 TO .062 AMOUNT OF OIL CONTROLLED TAPPET CLEARANCE. OIL FEED FROM CRANKCASE 25/30 LBS/D" BALL SEATS HERE WHEN TAPPET FULL INERTIA ELEMENT WHITE METAL BEARING CRANKSHAFT NOSE RUBBER AND FABRIC DISC DOUBLE FAN DRIVE 19 FEB 1932 CRANKSHAFT DAMPER PIERCE -> 4/2/32 | ||