thank you for the quick responses
my first guess would have been that chain would be more durable because its metal, could you enlighten me on that?
and I'm not sure if we could do a drop center chassis because the rocking back and forth would severely impact what we're trying to do. The robot would probably only have to face level surfaces most of the time with the odd bump now and again (its actually for a sponsor to take to tradeshows and events to advertise). Would it be bad to just have all 6 colson wheels touching the floor at ounce? (i was leaning toward what 610 did last year but on a larger scale:
http://prntscr.com/67dvyj )
We have a very tight budget so we sadly don't have the opportunity to test solutions before implementing them