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  1. #1
    Team Beer Cynikal's Avatar
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    JB Weld Strong Enough for Braze-ons?

    I know it's a silly question but I'm looking to experiment. Would JB Weld be strong enough to hold a DT shifter boss and cable stop? I'm looking to put a DT shifter (indexed) on a head tube for an upright town bike. I know I could get it brazed on by one of our local framebuilders but I'm not 100% about how this would work and I'm just tinkering here.

    Thoughts?
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  2. #2
    Senior Member GrayJay's Avatar
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    If you are just tinkering, see if you can use clamp-on shifter bosses instead to test function and adjust the position, then have bosses brazed-on later once you know where you want them. JB weld would probably be sufficiently strong for temporary testing but I doubt it would be a good long-term solution.
    You dont necessarily need to find a skilled framebuilder for adding a few braze-ons. A local welding repair shop or a garage hack that knows how to braze could do this pretty easily.

  3. #3
    Team Beer Cynikal's Avatar
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    If I could find a clamp-on boss for indexed shifters i would be happy enough. I've come up empty. Do they exist?
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  4. #4
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    Quote Originally Posted by Cynikal View Post
    If I could find a clamp-on boss for indexed shifters i would be happy enough. I've come up empty. Do they exist?
    Check ebay or ask on Classic & Vintage subforum. Know the diameter of your downtube.

  5. #5
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    JB weld isn't strong enuf to do that!

  6. #6
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    would jb weld be strong enough to hold guides for rear dyno lighting wiring...maybe two or three guides underneath DT?
    4130 steel frame / powdercoat.

  7. #7
    Randomhead
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    Quote Originally Posted by bionnaki View Post
    would jb weld be strong enough to hold guides for rear dyno lighting wiring...maybe two or three guides underneath DT?
    4130 steel frame / powdercoat.
    I think so, but your paint might not be.
    Last edited by unterhausen; 06-15-11 at 07:34 PM.

  8. #8
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    Whether you think you can, or think you can't, you're probably right

  9. #9
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    Quote Originally Posted by unterhausen View Post
    I think so, but your paint might not be.
    meaning?

  10. #10
    Randomhead
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    powder coat doesn't have stupendous adhesion. It mainly stays on because it's tough. So if you yank on your wire, the powdercoat may fail.

  11. #11
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    gotcha.
    guess I'll do this the right way...eventually.

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