On a roller rocker, at 50% of net valve lift, the geometric line from the centerline of the rocker shaft to the centerline of the roller axle should be at 90* to the valve stem. Not the centerline of the shaft to the tip of the valve as some have stated, and as a shoe type rocker is measured.
Mike Beachel
I didn't write the rules of math nor create the laws of physics, I am just bound by them.
