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The idea behind the tugboat was to create a functional
mechanism, but with a certain spice that would make it both down-to-earth and
interesting. The Tugboat is driven by a rubber-band motor powered by the
tension of the rubber connected with a bearing. The reduction gear transfers
energy to the drive wheel and further to the asymmetrical wheel pair. The
pendulum slows and evens the motion of the tugboat.
The winding key on the drive wheel is blocked by a ratchet gear. There are two control levers, one of which stops the mechanism, and the other launches it – stop and start lever correspondingly. Use two ropes with hooks to hook up and transport small freight – wheeled models or a paper boat. Your Tugboat will run from 1.5 to 3 meters depending on the type of surface.
| Characteristics | |
| Estimated time of assembly | 2.5 hours. Self-assembly: No glue required |
| Level | Medium |
| Model size | 11.2*4.7*7.3 in (28.5*12*18.5 cm) |
| Number of components | 169 |
| Package size | 14.9*6.7*1.3 in (37.8*17*3.2 cm) |
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