i'll ask him to take more pictures of the modified top tube and post themHe pulled it off well. Maybe your friend will let you share the details on that modified top tube, since there is a good bit of interest on motorizing BMX bikes on this site.
not sure of the sprocket setup, but looks like its a 44 tooth, a 30T would be better on them small wheelsI like that top tube!!! He should add a 30T sprocket to it!!
havent tried it yet, but with that setup it should have torque,sacrificing top speedThat little bugger must torque, hills are not a problem!