Questions tagged [braze-on]

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11 votes
4 answers
2k views

I have a question regarding the structural integrity of my aluminum frame after its having... incurred damage;

Apologies if this has been covered previously, but I didn't see it if it had been, and at this point I'm at a loss. For context, the bike in question is this year's Haro Double Peak Sport 29 https://...
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6 votes
3 answers
1k views

What are the Trek Domane frame bottom hex screws for?

I recently purchased a Trek Domane AL 3 Disc. It has 4 mounting supports. 2 inside the frame for water bottle cages 1 next to the stem 1 on the frame bottom I wonder if anyone know what kind of ...
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2 votes
3 answers
551 views

The eyelets/braze-ons on my bike's seat stay are on the inside, not on the outside. Which Rear Rack will fit it, if any?

I have a Trek X1 Cyclocross bike and I want to get a rear rack for my bike. I went to a bike shop and none of limited rear racks they had would fit my bike. The reason was because the eyelets or braze-...
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5 votes
2 answers
2k views

How to fit rivnut / nutsert to frame?

I have an old steel frame road bike, dating from 1980. Its not rare or special, but its very like the one I rode to high school in the late 80s. Problem: There are no bottle cage mounts, so my ...
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  • 99.2k
4 votes
2 answers
1k views

Is there a "conventional" configuration for mounted accessories?

Many different types of bike accessories as designed to be mounted via somewhat-conventionalized braze-ons: These braze-ons most often are on the down tube and occasionally on the seat tube and nearly ...
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5 votes
8 answers
6k views

I want to weld or braze the pedal to the crank arm, but what metals are they?

I ruined the threading in my crank arm, and would like to weld or braze it back on, instead of buying a new crank set. It is a cheap old bike, so the result does not have to be perfect, but it should ...
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4 votes
2 answers
1k views

Tapping threads into braze-ons

I have a rather old frame that doesn't have threads on the rear rack braze-ons, and thus requires a nut. This nut makes contact with the chain if the chain is on the outer sprocket, so I'd like to tap ...
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2 votes
1 answer
106 views

di2 front derailleur braze on for 105?

can di2 front derailleur braze on adapter be used to mount 105 derailleur?
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7 votes
2 answers
2k views

What is the purpose of a braze-on on the underside of seat stay?

I have a Jamis Citizen 2 Step through (2013 or 14 maybe) which has a braze-on on the underside of the seat stay near the brake studs. Just one braze on each side. I'm curious as to what the intent ...
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  • 2,321
6 votes
2 answers
2k views

What is the purpose of this braze-on?

I'm wondering what the purpose of the braze-on pictured below is? It's on the non-drive side of my fork. I thought it could have something to do with racks, but then I figured they would put one on ...
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  • 21.4k
3 votes
1 answer
854 views

Lubricating screw/braze-on threads: Bike lube or polylube?

Years ago, I made the newbie mistake of forcing a rack screw into a steel braze-on. I had to replace that fork. And I've heard this advice many times: When putting a screw into a braze-on, put a ...
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3 votes
2 answers
1k views

Possible to repair a pushed in braze-on?

I have a Trek 7200 (Alpha aluminum frame) and it has two water bottle holder mountings, the top braze-on on the seat tube seems to have broken from over-tightening and has sunk into the frame. These ...
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6 votes
1 answer
2k views

How should I restore braze-on brake cable housing guides?

I own a 1988 Schwinn Le Tour. It's beginning to show its age-- the original paint is chipped in many places and the frame is rusting underneath. The worst areas, by far, are around the rear brake ...
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  • 1,030
7 votes
2 answers
2k views

removing broken mudguard/fender bolt from eyelet

A couple of years ago I tightened the bolt attaching my rear mudguard/fender to the eyelet at the hub and it snapped, leaving a 5mm long section of bolt stuck in the thread. Since then I've tried ...
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