[Billfred]

Originally Posted by MrRoboSteve

One option I haven't looked at before is using FTC parts.

For example, I could use four of these NeveRest motors and four of the inexpensive Omni wheels.

http://www.andymark.com/NeveRest-60-...-p/am-3103.htm

That would run me $60/wheel all in. Any cheaper options?

Do you want cheap, or do you want cheap cheap?

When we did AndyMark Fight Night, I pulled two NeveRest 40s out of our failed-testing pile, stuffed a little churro on them (slice it an inch or so along the axis, wiggle a screwdriver, jam it on the NeveRest shaft), and then found a couple 1/2" hex Performance Wheels in our scratch and dent pile (which could easily be swapped for the far-cheaper Stealth Wheels). Even if you had to add a couple Collar Clamps to the churro to make sure it stayed engaged with the NeveRest (I didn't with the aluminum Performance Wheel), you're still under $40 a wheel.

How you handle the other side is an open question; I just let the chassis drag along the warehouse floor with some clear packing tape as a slider block. Some casters from the hardware store would certainly get you started until you wanted more.