Open class, powered by an ice cream maker motor. Something in the neighborhood of 220:1 gear reduction. I ended up having to use safety wire to hold most of the gear locks on. It likes to throw them ten feet otherwise. Video here: http://www.youtube.com/watch?v=8XJflwkvfeI
nice tractor, in the video did you break some of the shafts or something? oh thetires are the same actually
Thanks! It broke the final shaft in the gearbox in that video.

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