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Snapped weld on Raleigh Portage rear cantilever boss

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Snapped weld on Raleigh Portage rear cantilever boss

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Old 07-14-14, 12:37 PM
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zenke013
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Snapped weld on Raleigh Portage rear cantilever boss

Any thoughts on how to get rear brakes back in action? college student, low budget... but i really like this bike.

Boss snapped right at the weld (must have been rotten, barely withstood any torque). Have all of the pieces.

Any way to attach it without welding?

-mike
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Old 07-14-14, 02:27 PM
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The whole boss or just the post?
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Old 07-14-14, 02:30 PM
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zenke013
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Originally Posted by Slash5
The whole boss or just the post?
The whole boss. The weld snapped right at the connection to the frame proper.
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Old 07-14-14, 03:45 PM
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Originally Posted by zenke013
Any way to attach it without welding?
I don't know that you've got any feasible options beside brazing or welding. Or maybe using a type of brake that doesn't mount on cantilever bosses.
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Old 07-14-14, 03:52 PM
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Any way to attach it without welding?
Technique is ... brazing ..then spray touchup where the torch heat burned the paint off..
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Old 07-14-14, 04:03 PM
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Replace the brake with a dual-pivot caliper. You may need to remove the remaining boss.
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Old 07-14-14, 08:22 PM
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A bike shop or frame builder should be able to braze on a new cantilever boss.

A Raleigh Portage has a 650B wheelset. Today there are some good tire choices available for it. At the time Raleigh built it, 650B seemed to be on the way out.

That's no longer true.
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Old 07-15-14, 08:31 AM
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cycle_maven
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Sell the Portage on Ebay and buy a different bike. Even with a broken canti stud, it could fetch $800, which would buy something newer with 700c wheels with enough left over for a few school books and a couple pitchers of beer.
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Old 07-15-14, 12:51 PM
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Originally Posted by cycle_maven
Sell the Portage on Ebay and buy a different bike. Even with a broken canti stud, it could fetch $800, which would buy something newer with 700c wheels with enough left over for a few school books and a couple pitchers of beer.
This is really good advice, if you want a more modern bike and/or need the money. On the other hand, you say you really like the Portage, and the Portage is a nice -- and for some, quite desirable -- vintage tourer (which is why you could get a pretty penny for it, even with a broken brake boss). My guess is that the good folks on the C&V (Classic & Vintage) subforum would be interested in your "dilemma." Me? I'd probably have the Portage repaired, assuming that it's in good enough condition to justify it and that I had the cash available. One last thing: Do you actually ride this bike at college? It might be safer, from a theft standpoint, to ride a cheapo beater at school and save your good bike (the Portage or another) for summers, etc.
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