I find it amusing that you frequently find bikes on US eBay that are called "track" bikes or were "converted" to "track" bikes. This can only be done by replacing the drop-outs, so these bikes, as Sheldon already pointed out, are just coasters with a fixed gear. As a learning pedant I must say that this is wrong. A track bike is defined by it´s frame (and, too add, ridden without a brake!). Just go and watch any fixie messanger in any large city ride their bike (straight drop-outs, no freewheel and no brake) and learn. The skidding WC holds the record with 224 meters!
Kim "glossary" Klakow Berlin, new home of the Library of Alexandria, Germany
-- Kim Klakow Diplom Grafik Designer Akimbo71@gmx.net +49172-1786481
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