Framebuilders - tube sets with curved seat tubes.. exsist, or no?

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.

PDA

View Full Version : tube sets with curved seat tubes.. exsist, or no?

SugarPILL

07-18-07, 12:03 AM

was looking into building a pursuit based frame with the curved seat tube but having trouble figuring out if the frame builders are bending them, or if any of the tubing manufacturers produce them?

SamHall

07-18-07, 06:39 PM

Henry James carried A TT "Aero" set with a curved st for quite a while. Don't know if it's still a regular stock item though.
FWIW, every curved st I've seen in person was a custom bend done by the builder- Including the one I brazed up today.

ps- gotta be careful how you do the bend if you want it to conform to UCI regs.

SugarPILL

07-18-07, 07:21 PM

are you building a 2 part wood press form, or some sort of tubing bender?
i would love to see a pic...?

redtires

07-18-07, 07:24 PM

I don't know if they still make them, but True Temper used to make a fully aero tube set with an "S" bend seat-tube. We used them extensively while building prototypes for KHS. Albeit, that was years ago. What other places have you checked?

velomatt

07-24-07, 12:05 PM

I've got a custom frame that the frame builder hand-bent the top tube.
It can be done but is a bit risky on thin or butted tubes.
There is a thread on bending tubes on the Frame Forum:
http://www.frameforum.net
just do a search ...

SugarPILL

07-24-07, 01:59 PM