A few posts back I showed the beginning of stretching the back of Alex’s new frame. Here is the end result. All seams are braced with hollow slugs with the inside edges beveled. This is so if wiring or hydraulic tubing is routed through them they wont chafe of a sharp edge. Remember, motorcycles vibrate, and even a well padded wire can cut itself if rubbing up against a sharp edge.
The seams are welded conventionally and plug welded to the slugs on both sides. The bike is now 3 inches longer in wheelbase and 1″ higher off the ground than when it was made.