Let me first say, we are having a blast with these two trucks. We own two stock SC18. That said, running these outdoors on loose dirt or gravel is a dangerous affair.

Is anyone else discovering that rocks and dirt get into the drive train very easily through the opening for the steering rack/belt tensioner? AE sells this unit as "Molded composite chassis with sealed drive train", but today we ran the trucks for no more than one minute on a baseball field only to have the steering lock up. Small pebbles got stuck in the steering assembly.

Once that was cleared up, it wasn't more than 30 seconds later that the truck locked up. Rocks and debri got into the drive train through the same openings. We had to shut down and head back to the garage for a total cleaning.

So, is it safe to say, the drive train is not "sealed"?