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Originally Posted by edomus
Not last year it wouldnt have been. I saw a bot with entirely metal treads and they passed.
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From 2003 Competition documents - rule M17:
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M17 - Robot wheels, tracks and other parts intended to provide traction on the playing field (“traction devices”) may be purchased or fabricated. In no case, will traction devices that damage the carpet or other playing surfaces be permitted. Traction devices may not have surface features such as metal or hard plastic studs, cleats or other attachments. The outer surface of off-the-shelf wheels may be modified by removing tread material only. In no case may a traction device protrude beyond the bottom surface of the Ramp mesh.
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If that bot passed I would say someone was not doing their job ...
Metal cleats and other attachments were allowed in previous years, but this rule was added to avoid field damage which had occurred in 2002.