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  1. #1
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    Paragon Polydrops and Cromoly Tubing

    So I want to build a frame using Paragon Polydrops, but I see they only come in stainless. So far I have only built in Columbus Thron, and probably would with this frame as well.

    My question is would you TIG the dropouts or braze or silver solder them?

    I have so far always silver soldered the rear dropouts, and I am inclined to do the same here for the sake of simplicity even though I intend to TIG the rest of the frame - what do you reckon?
    My framebuilding blog; http://pogwardbicycleindustries.blogspot.co.nz/

  2. #2
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    Looking at various pictures it seems as though the part you attach to is a tab, and could be slotted and silver soldered, or tigged. The fact it comes in Ti indicates it can be tigged, but the style seems also to be something you can silver solder. You could ask them.

    My own prejudice would be that if something can be tigged it should be tigged. It will require less heat for the most part, and use less material/weight, demonstrate greater skill, and you get a fusion bond. But if the rest of the bike is going to be lugs or something, it might affect the acceptability of TIG. Not a particularly classic drop, so you can probably do what you like.
    Last edited by MassiveD; 05-27-14 at 01:18 AM.

  3. #3
    coprolite fietsbob's Avatar
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    A Common choice of TIG filler wire is Stainless steel ..

  4. #4
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    +1 The 309 rod that does stainless to carbon is the preferred rod for some bike welders for carbon steel work, though there are apparently better choices if you can get them.
    Last edited by MassiveD; 05-27-14 at 02:33 PM.

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