[FrankJ]

The last couple of years we have run mechanum wheels. We use the andymark nano tough boxes with the long shaft that allow bearings on both sides of the wheels. The back wheels are direct, live axle drive. The front wheels are dead axle chain driven to get the gear boxes out of the way of the intake system. So we are running a live-dead axle setup. We have no issues with either system although the live axle is slightly less complex & lighter by the weight of the chain & sprockets. With a very rigid chain path, we have had no issues with chain tension of the lack thereof.