Finally an update,
Split the bottom bracket and left it in place to help keep everything lined up, and parallel. Added a new cross bar , and a section of the bottom bar.
It looks like a mess, but made progress. Cut and welded up a piece of the frame to get a curved "seat post" that follows the radius of the tire. Straightened the last 8 inches of the chainstay to smooth the transition to a section of straight pipe. Lots more cutting and welding to do. Got to make more sleeve inserts to join the pipes together.
Split the bottom bracket and left it in place to help keep everything lined up, and parallel. Added a new cross bar , and a section of the bottom bar.
It looks like a mess, but made progress. Cut and welded up a piece of the frame to get a curved "seat post" that follows the radius of the tire. Straightened the last 8 inches of the chainstay to smooth the transition to a section of straight pipe. Lots more cutting and welding to do. Got to make more sleeve inserts to join the pipes together.