If you need small, light weight robot wheels, you can get a lot of
different sizes, styles, and types from RC airplane or hobby stores. They
have them in soft foam, hard foam, hard plastic, inflatable rubber, etc.
Many larger robots can use the wheels sold for lawnmowers or small
tractors. I have used lawnmower wheels on larger robots with no trouble.
For toy wheels, buy toy cars at a close-out and you will be able to
remove and use them- cheap and simple.
The largest difficulty for new robotic hobbyists is getting some sort of
adapter or connector for the wheels. If you have a drill press, you can
often fabricate wheel hubs or mounts from a small bit of tubing or rod stock
by drilling axially for the shaft and one radial hole for a set screw or
Sir Charles W. Shults III
I got some great advice from Gordon McComb awhile back. Buy gear
blanks from Stock Drive (www.sdp-si.com) with the desired bore for
your axle. I then use a numbered drill bit that tightly fits into the
smaller of the 2 bores (the 2 bores being the wheel and the gear
blank). Build up the diameter of the drill bit for the larger bore
using masking tape or another type of tape. This will perfectly center
the gear blank on the wheel. Now drill 4 holes through the wheel and
gear blank for mounting screws.
Good idea. However, I've tried this many times and had pretty poor
If you are building a larger robot then I would checkout any
local suppliers that sell castors. There are quite a few
brands (Colson is great) that are perfect for larger robots.
You can get them with regular black rubber or a non marring
grey rubber compound which is great for indoors. The HERO
2000 used a pair of them for its drive base and they are also
popular among BattleBot builders. If you are not too far
from a shop that sell them see if you can stop by and see
what they have.
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