Is that gum rubber I spot?
Liked 222’s wheels? 
Thats not any gum rubber I am familiar with.
Thos omni wheels must be adding up at 1.6 lb each and oh say 8 of them for your holonomic drive right?? 
Plus the mounts for them and the encoders as posted previously.
Heh… the stock wheels alone weigh 12.8 pounds all in all.
JK
Haha, looks great guys. I really do wanna know what the wierd material is though.
until #3…
-Henry
So is all that (sprocket, 2 omniwheels, and wheel) really on one shaft? Anyone have any clue how this could make sense?
Everything on a 45 bot seems to fit together seamlessly, so I’m guessing the 2 omnis are being used for drive, while the attached wheel with the unknown material will be used for some other function.
Doesn’t look like gum rubber, more like foam i think. Its got the holey texture if you look closely. Fresh Gum rubber is smoother than that… Not that i would know anything about the advantages of gum rubber, or how to impove upon it.
I think somebody just stacked a couple of AndyMark trick wheels on each other then with an AndyMark wheel hub on top of them and a piece of TechnoKat paper hanging off a model building…
If that wheel is to scale (see building?) than I don’t think the robot will fit inside the box :ahh:
If it does fit than the wheel looks great 
Wayne Doenges
CAD Mentor