From:Mark Hill
Subject:success with the counterbore. Date:Sun Mar 3 21:39:11 2013
You can see how the O.D. of the cross shaft bushing has to sit in the counterbore to center the the oil pan. I now have a centerline established to machine the welded up oilpan to mate the halves back together. The bike this belongs to is a 1915 model "E" short frame. There are probably more real 1912 Hendersons than there are 15 model E bikes known.