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BrianEnigma

Mouse Car: Son of Rat Racer

by BrianEnigma Nov 5, 2013
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Great little project :-)

what about adding a second rotary shaft above the first one, and then a gear ratio between the two. that would limit how fast it could spin the wheels. also, what if you laid a rubber band so that it stretched between two wheels like a tank tread

Doing a science project and this is the best design I found! Thank you so much!

Making the drive wheels larger would reduce torque and increase grip.

Have you tried wrapping the wheel edges with elastic bands? It might give a better grip on some surfaces.

Yep — that was one of the first suggestions to come up in conversation. It helps a little, but not enough to make a difference, i.e. not enough to feel like a "fun toy" versus an incremental technical improvement.