Gear Motor Tread Idlers

You only need one motor per side on a tracked vehicle, but you'll need at least one idler wheel to stretch the tread 270014 e 270015 between two points on your robot!

This idler matches the same dimensions as the driver cog (38mm dia x 15mm wide), but is drilled out to 1/4" (6.4mm), which lets you use a standard #8 bolt as the idler axle.