I have a roto-zip for sheetrocking, and it works awesome for that, but I think that it would spin too fast, and there isn't enough torque to keep your engine spinning. I have used my cordless drill with a starter wheel on a shaft(I used a long bolt), and that worked well enough in a pinch, but there is no replacement for a starter box for convienence, and ease of tuning. Sometimes I wish I had a pull start for those restarts, but I would never give up my box for cold starts.