Mechanics and Construction > Mechanics and Construction

quick question

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annoyin_kid:
what is the small wheel in this photo called? i need something like it to hold up my robot because my robot only has 2 wheels and i dont want to spend too much time mucking around with that wheel. does it rotate?

http://www.societyofrobots.com/images/materials_HDPEexample.JPG

trigger:
It's a caster.

Admin:
the particular one i used was meant for furniture

i think i got it at HomeDepot, but dont remember

JesseWelling:
http://www.acroname.com/robotics/parts/R76-4CM-ROLLER.html
I hear these make good casters because they don't need a swivel axle.

Admin:
yea, omni-wheels work well too. ive used the one Jesse posted as an effective caster, but that one is annoyingly expensive.

try here for cheaper omni-wheels:
http://www.kornylak.com/wheels/transwheel.html

just stick a rigid shaft though the center and your done.

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