The rules still state only one large fan, unlimited small fans. Actually, this is the rule we are quoting...
Quote:
C7
You must use 16 AWG or larger diameter wire to connect the window motors to the
Speed Controllers. You must also use 16 AWG or larger diameter wire from the
Circuit Breaker Panels to the Robot, large muffin fan, and any other connections to
and from the Relay Modules. The only exceptions are that 24 AWG wire may be
used to connect the small muffin fans and any LEDs to the outputs of a Relay
Module.
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Since this rule uses the singular for the large "fan" and the plural for the small "fans" in reference the interpretation is one large fan only.
I always caution teams to use freeze spray sparingly, as shock cooling can cause some parts to crack and the spray can wash lubricant out of the bearings. Cold parts in a humid environment will also condense water on the surface, be sure to allow it to dry first.