This thread is so 2008.

The beater "fixie" (UO8 conversion)



The actual Track bike (1989 Serotta Track)



+1 to what sixty fiver says above re: conversions. My mileage on them is completely unknown but high, dating back to the early/mid eighties. Never pulled a wheel out of a drop out. It's far more common to see someone throw an improperly tensioned chain... you can do that with track ends or dropouts, no difference.