Quote:
Originally Posted by Chris is me
I would be VERY careful with those 3/8" drive shafts supporting cantilevered wheels. Have plenty of spares ready and check them every match, and make sure they are a strong material (7075 AL or a nice, strong steel alloy).
Otherwise, neat wheels.
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I'd be willing to bet that the 3/8" hex shaft is also a factor in the hub wear as well. Figure a 3/8" hex shaft is transmitting the same amount of torque through a significantly smaller area on the wheel than 1/2" hex, so it should be more prone to stripping the hub out.
Also, for those of you that are curious, ABS M30* has an tensile strength of ~5,200PSI and Ultem* 9085 has a tensile strength of ~10,400 PSI.
*Assuming that these materials are being printed using a Fortus Printer.... AFAIK it's the only machine that uses both of these materials.