Quote:
Originally Posted by Chris is me
Literally half of the cost of that drive base is in the shifters though. When you compare a Vex single speed (double reduction gearbox is about $60) version of the West Coast drive to an AndyMark Kitbot (valued at ~$450) it's a much more even comparison.
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True. Here's a list that's more tailored to be a comparison to the kitbot. This uses West Coast Products WCD single speed gearboxes (Vex single speed gearboxes aren't setup for WCD). It also uses Versawheels instead of traction wheels and omits CIM motors. That should put it on similar footing with a kit bot.
$40: 2x Versachassis Rail @ $20
$20: 1x Versachassis gusset 8 pack
$150: 6x Versablock kit @$25
$40: 8x 1/2" hex bearing @$5
$20: 4x Versablock Cam @$5
$40: 4x Versachassis hex shaft @$10
$220: 2x WCP SS WCD gearbox @$110
$28: 4x CIM gear @$7
$56: 8x #18T sprocket @$7
$36: 6x Versawheel DT @$6
$10: #25 chain
Total: $660
I agree with your premise that the shifters add a big portion of the cost. Wheels can jack up the cost, too, depending what you get.