I am trying to locate a source for a piece of tubing for my tandem that I am having modified. I need a 1.26" (I assume it really is 1.25" but measures 1.26") diameter by 30" long tube of Chromoly. The frame is made out of True Temper verus butted tubing but I cant find anything close. Can anyone help me out?

I think you're going to have to get some 1 1/4" 4130 straight gauge tubing. .035" wall should work for a top tube.

on edit: I mistakenly had 1 1/8" earlier

Aircraft Spruce and Specialty has straight gauge 4130 in 1.25" cut to length. KVA stainless has straight gauge stainless tubes 800mm long in 1.25" (31.8mm).

Found it at Wicks aircraft. Thanks

Ok got the frame back from the welder and it turned out great. He did not trim the seat tube down though and when I did it ends up being just below the end of the original seatpost sleeve. I am thinking of trying to remove the sleeve from the trimmed piece of seat tube and brazing it in the remaining seat tube. will this work? Any other ideas?