I bet they are on the base (the main one, not the wings)
and they are used as the primary drivetrain.
Just not on the robot with treads
*shhhhh*
__________________
-Travis Covington
2008-2017 - Engineering Mentor of
Team 254
2001-2008 - Engineering Mentor of
Team 968
1998-2001 - Mechanical Director/Driver/Member of
Team 115