Originally Posted by powers2b
Not if your chain tension / line is correct.
Enjoy
i beg to differ.... my first singlspeed had perfect chainline and still dropped twice in the span of my first week, each being extremely painful; one almost dropping my head under a cars wheel. everytime it happened the chain just "shifted" right off the back cog. maybe it was due to flex as it was a seel frame but i don't care... once it happened the second time my confidence in that drivetrain was gone.
i will use whatever front ring i can find but i will NEVER ride with a ramped cog out back gain.
beside how expensive is a DX cog????
http://cgi.ebay.com/ws/eBayISAPI.dll...category=42328
they are burly, the teeth are nice and deep, and it will never throw the chain.