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Used bike fit...(4 posts)

Used bike fit...JL
Jun 11, 2003 6:55 AM
I'm planning on grabbing a used bike to convert to fixie/ss bike. But what if I'm not sure about the geometry vs. my roadie (Trek 5200). I have a place near me with multiple bikes (with horizontal drops), but how can I determine which will be a close fit? Do I measure the tubes? Should I go by standover and reach? It's not a bike shop, just a flower shop that makes some extra $$$ selling used toys, equipment, etc.

Just wondering how I should go about this. I'm very interested in trying this out, as I've done the no-shifting thing a few times now and it was an interesting ride.


No one's made a used bike into a fixie withoutJL
Jun 13, 2003 1:03 PM
knowing the geometry of the bike they're changing?
at the very least...Frith
Jun 13, 2003 5:58 PM
measure the top tube if it's close to your trek (like within 1 cm) your doin ok. If you have a bit of standover then that's all you really need to know about the seat tube. If your lucky enough to get other measurements like seat tube angle then you can calculate exact reach compared to your trek based on some pretty common formula.
Thanks. (nm)JL
Jun 14, 2003 4:31 AM