Chassis dolly/casters?

fredsmedina said

those look like tires. are they rubber tires? or casters..?

i hadn't considered using rubber ones, but those would probably be more durable

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I dont like the pneumatic tires. They like to leak. Id spent some money and neoprene (spl?) casters. Then bigger the better. that way it can roll over small rocks and stuff. Im trying to find better pics of the rear. I forgot I had these on my laptop.