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#1
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wheelchair wheels
Anhyone know how well those wheelchair wheels from the kit can get up that mesh? If the center ridges were removed via lathe or "grippified" can they push a bot up?
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#2
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Re: wheelchair wheels
We may use pneumatic tires, but if we do use the polyurethane tires, I will simply use a rough-tooth, round "rat-tail" wood file of the same diameter as the partial grooves in the tread ( maybe 5/16 ?) and file a groove in the center raised portion. It connects much better with the mesh. I filed a couple of grooves and just did a drag test on the sample piece of mesh and the difference was amazing. I don't know how well the poly tire will hold up to this abuse, but you can always resharpen the edges of the groove periodically by cutting a fresh edge with a razor blade. Many motorcycle racers do this (or used to) to keep a sharp edge and reduce tire replacement costs. Just make sure you do not make the groove so deep that it protrudes below the surface of the mesh - see the rules on that one.
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#3
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All I can say about the wheelchair wheels is DO NOT USE THEM AS IS.
This is a big time mistake that many teams use. They do not function especially well on carpeting and I can't imagine they would have the traction needed to get up the ramp. I would suggest resurfacing the wheels and placing some sort of high friction surface to the outside of the wheels to get better traction. Just my 2 cents. Matt |
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