pic: 1885 Drive Train 2010

[MrForbes]

Originally Posted by Madison

In your case, however, be careful with liberal application of omniwheels. If y'all are using a fixed 8WD and if climbing the bump is your thing, you'll have some circumstances where only omniwheels are contacting the ground.

That's true. In our case we have the end wheels raised up (which you can't do very easily with the articulated design) so traction wheels all around is best.