Quote:
Originally Posted by ceo012384
Most of the guys I know that run theirs at the track are always talking about rebuilding motors and stuff because they get wrung out on the straights and sit at high rpms for long periods of time, which I guess dirt bikes aren't meant to do.
Really though I don't know much about dirt bikes or tards.
Mine: 366 pounds, 132 HP = 2.77 lbs per hp 
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And most of those guys are probably on converted MX bikes. YZF's, CRF's etc. On those bikes there is a lot more maintainence, but that's the way they're designed and built, also, a lot of those guys who race will rebuild their motor between seasons to keep it at peak power. If you get a purpose-built street tard like an SMC, DRZ-SM, or a WR250X, or a dual-sport big bore converted to a tard (XR650) then the maintainence wont be bad at all.
BTW, were talking rear wheel, not crank, try about 110hp, then it's 3.3lbs per hp.