This one uses continuous-rotation modified rc servos instead of the maxon servos. Put simply, rc servos suck, but I am attempting to get the parts cost down and use only widely available parts. The tread geometry is modified somewhat in hopes of fixing the thrown-tread problem. The suspension is changed to eliminate the need to drill the road wheel struts edge-wise, so now a drill press is no longer critical equipment. This design also lacks a mount for the pan/tilt platform.
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