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Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

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Old 07-26-08, 02:21 PM   #1
calikid2006
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switching dropouts for track conversion

I have an old lugged steel Puch that has a high bottom bracket and seems to have a good track frame geometry (although it was originally a 70s road bike). Can I take out the simi-horizontal dropouts and braze in new horizontal dropouts to make a track frame?

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Old 07-26-08, 10:46 PM   #2
Six jours
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No. You will end up with a 70s road frame with track dropouts. If that is what you need, then it is a fine project -- but it still won't be a track frame.
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Old 07-31-08, 11:10 AM   #3
Servo888
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Doesn't the bike frame already have horizontal road dropouts? They're not track dropouts, but you still have some adjustment available for chain tension.
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Old 08-11-08, 11:30 AM   #4
unterhausen
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if you have horizontal adjustment, I wouldn't bother. There are some frames that aren't worth preserving, and a Puch might well be one of them.
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Old 09-02-08, 08:58 AM   #5
Erzulis Boat
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There is more to it than meets the eye.

The chainstay/dropout is "higher" (vertical distance) on a horizontal dropout vs. the track dropout.

If you just chop the old bit off, slot the seatstay/chainstay ends and insert the track dropout, you will lower the BB and create a sloping (rearward) toptube, and this will effect the geometry.

You will have to do some cold bending on the chainstays (downward) to get the correct lineup (rear axle/BB/front axle). You could always make your own track dropout with a lower adjustment slot, and tailor it specifically to the old frame.
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Old 10-25-08, 08:23 PM   #6
misha misha
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the drop outs wont do much good. If you have a chain adjastability i wouldnt even bother. Geo will still stay the same road, not track. So thertes no point really
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