I'm building a Kerzel hit & miss. The plans call for a 1/4 inch OD ball bearing for the cam follower bearing. I had a 3/8 OD ball bearing on hand, so I used that.
However, I see that I'll need to modify the cam follower so that the governor engages properly. My question is, if the cam lobe is approximately 1/16 inch high, with the governor engaged (engine missing), what should the distance between the cam follower and cam base circle (the part that is not the lobe) be? My guess is about half that distance, or about 1/32 inch, such that the valve still cycles, but does not close all the way. Is this correct?
(Also, ignore the position of the regulator arm in the photo - the flywheel is moved out of the way for the photo)
However, I see that I'll need to modify the cam follower so that the governor engages properly. My question is, if the cam lobe is approximately 1/16 inch high, with the governor engaged (engine missing), what should the distance between the cam follower and cam base circle (the part that is not the lobe) be? My guess is about half that distance, or about 1/32 inch, such that the valve still cycles, but does not close all the way. Is this correct?
(Also, ignore the position of the regulator arm in the photo - the flywheel is moved out of the way for the photo)
