Robotics Education & Competition Foundation
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Variance in the mass of discs


Appendix A on page A-9 of the Game manual states that the mass of a Disc is 65 grams, ± 20 grams (see attached picture)

The definition of Disc states:

Disc - A yellow foam object that can be manipulated by Robots. Discs have the following overall dimensions, with an expected tolerance of 0.02”:

Weight: 65g ± 10g

Since these mass tolerances are contradictory, can the GDC please clarify which is correct? It seems to me that the tolerance in Appendix A seems excessive, given that it makes both a 45g disc and an 85g disc legal, with the latter being nearly twice the mass of the former.

Thank you. img

Answered by committee

Thank you for bringing this to our attention. The correct tolerance is +/- 20 grams. This will be corrected in the June 14th Game Manual update.