WTB: Cantilever Brake Boss Fixture

[smo...@gmail.com]

Hi All,

Before I go out and build my own, I was wondering is anyone has a cantilever brake boss fixture for sale? Let me know what you got :)

Thanks!

Christian

Berkeley, CA

[christian poppell]

How about now? Anyone got something to sell? If rim brakes really are dead then release yourself of the things that do not bring you joy :)

Christian

Phoenix, AZ 

On Jul 8, 2021, at 12:45, smo...@gmail.com <smo...@gmail.com> wrote:

Hi All,

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[Alex Wetmore]

My best one is still two pieces of angle iron with holes 80mm apart for the bosses.  I've used fancier ones, but this setup is really easy and makes the bosses very square (important for centerpulls, not so important for cantis).

Like this (though these are 65mm apart because they are for centerpulls):

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From: frameb...@googlegroups.com <frameb...@googlegroups.com> on behalf of christian poppell <smo...@gmail.com>
Sent: Friday, October 8, 2021 10:04 PM
To: Framebuilders <frameb...@googlegroups.com>
Subject: Re: [Frame] WTB: Cantilever Brake Boss Fixture

 

To view this discussion on the web visit https://groups.google.com/d/msgid/framebuilders/DC245761-C291-4990-9147-07236645617C%40gmail.com.

[Hahn Rossman]

Christian-

The only thing I would add to Alex's comment is that a good way to measure the distance from the axle is a piece of brazing rod with a "J" shape bent on one end to hook over the dummy axle. trim it to the length that equals the radius you want the bosses at. Bonus points if you make one at the same time for spacing the bridges equally.

Hahn Rossman

rossmancycles.com

To view this discussion on the web visit https://groups.google.com/d/msgid/framebuilders/CO1PR01MB6679206401DD65EA7DD88C07D5B49%40CO1PR01MB6679.prod.exchangelabs.com.

[smo...@gmail.com]

Thanks for the ideas and tips everyone.

Alex, How are you measuring to keep the bosses aligned with the axle? Are you always using both pieces of angle together to keep the bosses in plane with the stays?

Hahn, Good thought with the rods, reminds me of the photo of Hirose where he has all the rods of diffrent lengths :)  https://www.renehersecycles.com/wp-content/uploads/2017/03/gauges.jpg?w=640

Thanks again all,

Christian

Phoenix, AZ