Originally Posted by Theflyingdutch
I'll check it out.
Anyway, the best way is to build a wodden mould on which to bend the tube, right? Should I use a rubber hammer to "gently" help the tube to bend?
That's a pretty big tube to bend this way. I've tried a 32mm x .8mm tube packed with sand on a 2 ft radius mandrel and it worked fine once, then kinked a bit the second time( I think I needed to pack it better) . I've never done one as big as the one you have- it does help that it's a thicker tube- I'd give it a 50/50 chance at working.
You bend with leverage and brute force, a mallet won't help.
As an aside, 28.6mm tubing will bend great and looks "right" as a tt on a steel frame.
edit: I just read that your frame will be stretched, the 40mm is probably a good call.