Typical Brake Therapy conversion. Pivots on your hub and the Heim end (rod end) arm attaches to your old Vee brake post:
Which kit depends on what rear hub you are using.
If you're lucky, you may be able to find an old "shark fin" disc brake adapter made by Specialized for retrofitting discs to older FSRs. One end bolted to the inner face of the dropout and the other ran up to the vee brake stud. If you score one on eBay or CL, it no doubt can be creatively repurposed to many other frames
Here is a similar home-fabbed version:
Last but not least - - for you Trek-ies The Trek/Klein/Gary Fisher Disc-O-Mount, which is claimed by Trek to be the only adapter to NOT void your frame warranty:
I can't tell you which exact ones it will bolt to - - I know it's not a bolt-on fit to my son's old '99 820. But any Trek with those two bolt holes on the non-drive-size dropout would be fair game. Supposed to be hard to find but still around.
Originally Posted by Mark Twain
"Don't argue with stupid people; they will drag you down to their level and then beat you with experience."
Last edited by dminor; 11-04-09 at 11:25 PM.