I built a bot with tank treads, this one here actually: http://www.nxtprograms.com/NXT2/multi-bot/index.html, and I've been having issues driving on carpet. For turns in place one or both of the treads seem to eventually come off after a few turns.
Any design advice on how to get the treads to stay on? I was thinking of separating the wheels by another notch so that the treads are on "tighter", as they seem a bit loose, but I'm not sure if that is possible or the best idea.
Any suggestions are greatly appreciated.