I've tried it....
and I might be hooked.
I got an F600(cannondale) frame and fork for christmas... so, i decided to build up my old frame and fork as a single speed(with old parts laying around)... just to try it. sure enough, I commuted on it twice and now i'm hooked. I don't know how i did it... but, i actually shaved 8 minutes off my best time with the same bike as a 1X9. the gearing is 44 X 16 on 26x 1.25 tires. On a 15.6 mile commute one way... my best time was 1hr 5 minutes. on the single speed, i made it in 57 minutes. I was completely surprised.
Now i'm thinking of turning the F600 into a singlespeed as well... and I'm contemplating turning my flat bar road bike into one.
or... i could just sell the two mtn bikes and get a single speed specific bike. wife would shoot me with this option though.
anyways... I'll post pics of the ss and the soon to be ss.
thanks for listening...
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Bikes: C'dale, Trek, Cervelo and Santana