Sheesh, now I see that you said 49cc right there in the first post! Sorry. I don`t blame you for not wanting the chainsaw motor. I bet your neighbors will be grateful, too. I know there are differnet types of drive systems. Are you going to drive a roller directly on the tire? Big pulley on the spokes? Tied into the chain before the derailler to take advantage of the gearing in your rear sprocket cluster?
They really do look like fun. The reason I decided it wouldn`t be worth it for me is that the close in locations I go to are so close that I usually just pedal myself there anyway, and "in town" for me is anywhere from 13 miles up (depending on where in town), so chances are I`d hop in my truck more often than not for anything outside of my little valley.
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