This hunk of PVC pipe is radio controlled. The wheels on the ends provide the locomotion, but it wouldn’t be going anywhere if it weren’t for that little tail strapped to the center of the tube.
When the motors are turning the body of the bot needs something to push against. In this case the tail hits the ground and keeps the chassis from spinning. We have seen attempts to go without a tail by using lopsided wheels to provide angular momentum, but this method is much more reliable.
The control for the bot is scrapped from a toy RC car. Once hooked up to the gearhead motors it’s ready to roll. The real difficulty of the build came in fitting everything into the pipe. A frame was built from a few disks used as mounting platforms which were separated by threaded rod. See it making its way around a gravel road in the clip after the break.
[via Hacked Gadgets]