Suggestions for design for a motorised Dirt/Mountain board?

Ok guys, im designing and making a motorised mountain board using a weed eater engine for a school project, minimal cost, any suggestions? I already have a design in mind but am wondering what input the Almighty Instructables community has to give  Cheers :)

You need to find a small gearbox to increase the torque, and probably a belt to further increase torque and to allow for the movement of the driven axle. Using smaller wheels would also help. You might need to add/modify the clutch to be able to start the engine.
slipknot rules (author)  The Skinnerz6 years ago
i was thinking about using an engine with a centrifical clutch and yes a low reduction gearbox