[sdcantrell56]

I would have to agree that the advantages of a track system just don't outweight there weight penalty as well as complexity, cost, and reliability. A well designed 6 or 8 wheel drivetrain with high traction wheels will perform almost as well in brute strength but be much easier to build, and theoretically less prone to failure. If you break a belt you're completely, however if you break a chain in a wheel based drivetrain you still have partial drive, assuming you have multiple chain runs. Thats just my 2 cents