Originally Posted by
stronglight
If you have Dia-Compe 981 cantilevers it is easy.
I have them on my 86 Voyageur. This model (possibly others too) featured a brilliantly conceived hidden adjustment slot for moving the arms up or down a few mm. to make them equally suitable for either size wheel.
I think these cantis were available from the early 80s. See the photos here showing details of a disassembled brake to better understand what I mean:
http://www.flickr.com/photos/strongl...7606108523956/
I thought I had read every post on every thread I could find on how to get these to work and somehow missed this one till now! OMG you no idea how happy I am right now. All of my 981s were set up with the arms in the top position still, which obviously is less than ideal with 700c wheels. I moved the left rear down just to see what it looks like, and I left the other side as it was. Not an easy pic to take but I think it shows the difference in the arm angle well enough. Thank you so much for your advice and pictures on Flickr!
