A BALL TURNING ATTACHMENT FOR THE SMALLER SIZES

摘要

Many overhead valve engines have some form of spherical location for the cam follower - pushrod - rocker connection. In the case of the model Bentley BR2 engine, the pushrods incorporate adjusters with spherical ends, the ball diameter being (1/8)th of an inch, and the adjuster thread 6BA. Having nine cylinders, the engine would therefore require 18 pushrods, and 36 adjusters. Consequently, I felt that the subject deserved a little fiddling around or should we call it research, before diving in and creating swarf.