Make sure you have a horizontal shaft engine(aka. no lawnmower-engine), get a clutch, tav2 or centrifugal(C/C is cheap-o and will burn quickly, tav2 is expensive but excellent).
These two forums here and here have a lot of tips & "receipes"
or make an electric one like these guys(from 1:20 and out)
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum