The Tugboat is driven by a rubber-band motor powered by the tension of the rubber connected with a bearing. The asymmetry of the wheel pair grants the model its unique way of moving, imitating a boat rocking on the waves, while the working pendulum creates a specific noise similar to one produced by the real-life diesel motor many boats are equipped with. There are two control levers, one of which stops the mechanism and the other launches it - stop and start lever correspondingly. Your Tugboat will run from 1.5 to 3 meters depending on the type of surface.
Putting UGears models together is fun and comprehensive: everything you need to build, learn, and discover comes in a box.
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UGears
UGears Tugboat