yes the tanks seem expensive
i have seen some very large rc ones and they look so much fun
i have always wanted to build one of these
vityaz crawler cummins v10 multifuel
floats swims crawls goes right over a 20ft ditch
rear is driven and can lift front rear and pivot steer as well as track steer
super wide tracks and a variety of units for the rear section
http://www.youtube.com/watch?v=8VOULfira3o
i think it would be great built from two kyosho blizzards
and i have been thinking of getting two cheap heng long 1/16 tanks to try some ideas with first
to work out how to get the lift and pivot steer happening