Fingertech/Liteflite Foam Wheel Hubs 3mm
thingiverse
Update: Release version 3. This version was used at Motorama 2020 for First Strike (2x1.75" wheel antweight) and Z Offset (6x1" wheel beetleweight). Push on wheel hubs for 0.5" and 0.75" diameter Fingertech wheels. Tested on Z Offset (4x 1" diameter wheels with these hubs), First Strike (2x 2" diameter). Both bots have well-protected wheels. Across 10 regular combat matches, 2 rumbles, no issues whatsoever. Probably would get wrecked quickly if exposed. For protected wheel hubs, they work fine in PLA. Extra hardware used: 1x 3mm ID teflon or nylon washer between motor output and hub, 1x M3 square nut, 1x M3 grub screw. Note: Don't push foam wheels on/off of the hub repeatedly as it will wear down the foam. Remove wheel hub by pushing foam aside to expose grub screw then loosening it.
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