Dr. Gamma wrote: ........I picked up that trick back in 1978 on the DesRoche built Vetter Superbikes. Any machine shop can make you a few. I used a adjustable ream to enlarge the pivot holes in the frame so the swing arm bolt had a super tight fit to the frame. Then had my machine shop hone the inner swing sleeve so the oversize swing arm bolt had zero clearance between the two. If you have .020ths play at the pivot bolt, just think how much movement there is at the end of the swing arm where your rear axle is.
Even on my S1 I went to a oversize swing arm bolt. When I first got my S1 it wobbled pretty bad. I was really disappointed in its handling compared to my homebuilt KZ1000 Superbike. There was a noticeable improvement in the handling of the S1 with just installing the oversize swing arm bolt.........
That makes a
LOT more sense than welding it. Especially when you consider that you will want to remove that swing arm one day even if it's only to change bushings (or bearings if you have them). I can't imagine needing to break a weld just to swap bushings. Ed
