seat collar question-
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  1. #1
    Ipso Facto
    Reputation: bikecycology's Avatar
    Join Date
    Apr 2010

    seat collar question

    I have a seat collar that I want to braze in to a seat tube. I was thinking a coil of brass and sweat it through the joint. I know silver would be better/easier but I am concerned about a later process when I braze the top tube and seat stays to the seat tube near by. I worry that the silver will leave the area. Any thoughts on what I should do? Anyone with experience with this?

    seat collar question-img-2087.jpgseat collar question-img-2086.jpg

  2. #2
    Frame Building Moderator
    Reputation: Walt's Avatar
    Join Date
    Jan 2004
    Both will work fine. Things will re-melt some when you go to join the toptube and stays, but the joint isn't going to move around or come apart (if you don't believe me, try getting a tube out of a lug sometime...).

    If your fit is pretty tight, you might have a hard time getting the brass to actually flow through. But I bet it will work fine.


  3. #3
    mtbr member
    Reputation: Meriwether's Avatar
    Join Date
    Jul 2007
    Definitely would use silver for that but i bet bronze could work fine. Like Walt said, don't worry about re heating up the silver in the next process. Could always use a nickel silver or System 48 wire and 56 for the later one

  4. #4
    mbtr member
    Reputation: scottzg's Avatar
    Join Date
    Sep 2006
    Brain fart.
    "Things that are complex are not useful, Things that are useful are simple."
    Mikhail Kalashnikov

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