what wheels to use

[Tom I]

Originally Posted by thefro526

Depending on your budget, I'd suggest looking at the AM Plaction wheel.

http://www.andymark.biz/plactionwheel.html

We're going to use them in Our 8WD this year, and as far as I know, they're the most affordable tread-able wheel out there at $22 - $33 a wheel - which was one of the main factors behind our decision.

If you go with any tread type wheels, definitely go with the rough top tread. From my team's experience, the rough top out performs the wedge top in all respects.

[Chris is me]

Originally Posted by Tom I

If you go with any tread type wheels, definitely go with the rough top tread. From my team's experience, the rough top out performs the wedge top in all respects.

Though sometimes, you may want the "worse" tread on your robot. Say hypothetically wedgetop wheels had slightly less, but not very less, traction (I don't actually know, I'm assuming based on your above statement). Then putting wedgetop on the outer wheels and rough on the inner wheels would supplement a drop center 6wd's turning ability.

[MrForbes]

Yes Chris we discovered that tread selection is important....not so grippy on outer wheels seems helpful for turning on carpet without killing battery quickly

[Tom I]

Originally Posted by Chris is me

Though sometimes, you may want the "worse" tread on your robot. Say hypothetically wedgetop wheels had slightly less, but not very less, traction (I don't actually know, I'm assuming based on your above statement). Then putting wedgetop on the outer wheels and rough on the inner wheels would supplement a drop center 6wd's turning ability.

I stand corrected! There are practical applications of wedge top traction, and Chris just showed a creative example of it.