In regards to the 1/8" keyed shafts:
Quote:
From Banebots Website:
NOTE: The broached polypropylene core should be durable enough for most applications; however, it may not be suitable for some strenuous applications. It is recommended to use a separate hub solution for strenuous applications.
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This applies to the 6WD cantilevered "west coast" drive train setup. Until we know how durable these wheels are in a competition environment, it may pay to simply go with the high-traction soft rubber and plan to change the wheels every so often anyways. If a hex mount is chosen, it may also be more beneficial to use the 1/2" Hex shaft over the 3/8" hex shaft for the same reasons.