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Unread 13-01-2011, 00:59
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mechE131 mechE131 is offline
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Join Date: Jan 2011
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Re: Attaching to the pole

Their is almost no doubt that the most competitive minibots will use wheels to propel themselves up the pole. I wanted to discuss with some of the members of the forum methods of actually attaching to the pole.

This is a key element in any "on paper" design. This includes a detail free body diagram of all the forces, one of which being the force that keeps you attached to the pole. Inevitably, this force will also react with friction force and resultant force the most.

In other words, say you choose magnets to hold your minibot to the pole. You go one mcmastercarr.com and choose the strongest magnets you can find. All of a sudden you can hold 15 lbs. to the pole; the max possible weight of the minibot. But now you must create a large enough moment (torque for the layman) at the driving wheels to not only break free of the magnetic force, but also react against your weight (mass X accel.) and the friction force.

It may or may not work out so beautifully.