I have an Anti-Gravity fork that features a removable steer tube, but it is a threaded fork. Where can I buy a threadless steer tube to clamp into it to convert it? All I can find are threaded steer tubes or steer tubes pressed into a specific crown.
Here's a picture of the fork: http://www.retrobike.co.uk/forum/files/antigravity_fork_728.jpg . When viewed from the rear, by loosening two bolts I can remove the steer tube (it's already 1 1/8"). Do most forks not do this? Why aren't these more common?
This seems like it would work just fine: http://www.onlinemetals.com/merchant.cfm?pid=6997&step=4&showunits=inches&id=71&top_cat=60 , 1.125" OD, with 0.065" walls for a 0.995" ID would that be close enough to put the threadless cap inside?
Essentially, I'm looking for two things:
1) Where can I get the 1" ID 6061-T6 Aluminum, and
2) Why can't I find this by searching for 'threadless steerer tube'?
Here's a picture of my fork specifically.