Originally Posted by
dsaul
This is what I do to fit a 3" tire on a frame with a 73mm bottom bracket. Something similar would work on your frame with a smaller diameter section of tube welded into your existing stays. Finding someone willing to do it for a reasonable price is another matter.
I think he would have to ship the bike. Not that long ago, you could get a frame across the country for $30, but that doesn't seem likely now. People do modifications for far cheaper than I think makes sense, so maybe it wouldn't cost that much.
David, when you draw up a rear triangle, do you just go measure the tire on a rim? I think I will have a problem finding a 650bx2.25" wheel/tire to measure. I usually just rely in bikecad, but I trust it for this size.