RE: Is there a RC MT with Switchable 2WD to 4WD?
I am seeing some bad info here. To do what your asking you need a dig unit. They are most commonly found on rock crawlers. Some large MT's like the TXT have also been set up with a dig unit. The dig is controlled by a servo so its remote controlled. A traxxas mt could probably be setup but there are a few issues. Dig units are not made for anything high speed. 20-30 mph is about it and you would have to stop to switch drive type. The easiest traxxas would be the E-maxx with a custom chassis that has been stretched in the front so you can fit the dig unit and servo. You would also need a custom front skid plate.