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It just has to be powered by the mouse trap. I thought of the racheting idea, but I have no idea how to make it a reality.
All wheel drive seems like the thing to do to me, but simply two wheel drive, wud be easier. Perhaps belt type thing to drive the fronts, off the backs? It would make tripping them both at the same time easier.
Otherwise, without a rachet, its going to uncoil the string wrapped around the axle.
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