Originally Posted by
Andrew R Stewart
reddog3- I'd like to see aclose up of your rear canti bosses. I've done a few canti mounts which needed more contact to the seat stays (IMO) and sleeved the canti boss base with larger tubing. Yours look like this might be the case too. Interestingly this is the same issue as ESTs but with brakes. Andy.
Andy- Most folks don't pick up on my strange (brake fetish.) I like the feel of linear pull (v-brakes) when coupled with canti or road, short pull levers. I've used this combo a lot on my personal bikes after some experimentation to figure out what works for me. You can't put V-brakes on a road/race bike?
I'd be more than happy to send you a closeup, but text will probably explain it better.
On this particular frame the "boss" to stay is a chunk of .8x14mm (leftover seatstay cutoff). It's notched to fit the stay. I've never felt than attaching that "hunk" of canti boss was the best idea, so this was my solution.
What I did (once the spacing was determined)(the tubes were notched and attached determining the spacing) was take an available boss and machine it to fit the tube. Every effort was made to remove as much weight as possible- within reason of course.
The extension of the "boss" below the stay has a purpose. I made an aluminum bung and epoxied it into to the the canti boss tube. If I noticed deflection in the stay with brake application I was going to fashion a brace (similar to a fork brace) and attach it with a center drilled aluminum bolt.
No need for the brace. These (thin walled stays) have nothing in comparison to the deflection that my factory built Alu frame has.
Thanks- Donn L