buying a new frame seems to be expensive as all get out. i have a cross country MTB of which i've replace the suspension fork with a rigid fork. the problem is that the frame has large square stays (and yes, it IS a cross country frame) and no place at all to mount a rack. the other problem is that mtb frames with rack mounts cost a fortune.

so, is there a cheap way to get a new frame suitable for mounting a rack upon? it needs to be suited to using a cross country type suspension fork as my rigid for is suspension corrected (it's as long as a suspension fork).