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Re: Help!!..wheels?
An alternative to omni wheels on one end and high traction wheels on the other end is to use the relatively hard black plastic wheels typical of caster wheels on one end and high traction wheels at the other end. We have found it to be a very good mix of providing some resistance to being pushed from the side but still providing a benefit of 4 wheel drive. This setup also allows good turning. The black plastic wheels do wear out and sometimes get chunks broken out of them so they typically last 1 - 2 regionals but are relatively cheap and depending on the drive train setup can be easy to replace.
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