he could technically friction drive it, if he found something that wouldn't slip against the rollerblade wheels....it's electric as he said in his first post :P Chainsaw motors would be better suited for this I think, I've seen a go kart (street kart) powered by 2 100 cc chainsaw motors that flew...it was quick for what it was anyway....but wow, the vibration would kill you :P



Sean

 

I did it with an old scooter. jsut made motor mounts of out bar aluminum and had the clutch sitting on the rear wheel. it was a 23cc poulan motor. once you got going it was about 12 mph.