Frame straightening update
After meeting bill at a local subway restaurant and guiding him back to my shop we got the frame and all his stuff out of his car
it was late in the evening so we worked on it the following day
I can see why Bill wanted to keep his original frame it was rust free and in real nice shape other than being a little tweaked
well after getting the frame set level which on this bike is no easy feat
we used the factory jig reference marks for a level and just simple shop squares to determine how far out and where exactly the bends were
as it turns out it was a compound bend mostly to the front down tube but by making a cut at the apropriate angle up near the headstock I felt we could get most of the twist and bend out of it
so I cut the down tube from the headstock 90% the way through it at a slight downward angle 30 degrees and then applied three 1200# ratchet straps to the backbone by the headstock
I knew I had gotten the cut right because with the spare engine bolted up to the frame after it was cut the frame wanted to move back into shape but of course after having sat that way for so long it only came back about half way to straight
that is where the ratchet straps came in i tightened each one one at a time observing the movement of the headstock till I had as much pressure as i could apply with the ratchet straps we left it that way for a while and worked on cutting off Bills shock springs
when I cam back to the bike I gave it some smart hits on the cut I had made and it closed up enough so it was ready to weld I use automobile steel wire in my welder with argon shield gas and a lot of heat so we welded the cut shut and put reinforcing beads over it I then rewelded many of the other welds on the headstock to reinforce them as well
after we were done welding the headstock Bill asked me to weld all his other seams to make them more rigid too
we smoothed things off with a rolloc disc and a die grinder then painted them
this is about my fourth frame I have straightened and although the frame itself was complex the repair was easy and straight forward some of the frames I have done required a lot of measuring this one mostly needed to be put back to perpendicular with the trailing arm
pictures may be found here
http://forums.sohc4.net/index.php?action=gallery;su=user;u=12779