To darkith,and 123Splat
Thank you both for your replys,think I'm getting closer to having enough confidence to give this a try.I will test this out first on the bench like you suggest,that should tell me if the basic idea is going to work.If that seems to work on the bench,then the real test will be what they do under an actual load.And yes 123splat, one board will run the front motors and the other the back motors.
Only one board will handle all the other functions on the tank.
Darkith could you give me a little more info on the V-+ wire you refered to,is that one of the three wires that plug into the two boards.I will try to find the DBC instructions you refered to,but I have not had very good luck on here trying to find some of the info on past subjects.Not very good with a computer,pretty new at it. Thanks very much BIGMIG