if a peice of your robot comes off is it conidered a part of your robot?
<R1> in the VRC Starstruck Game Manual defines the subsystems of a Robot.
Thus if anything becomes detached from your robot, aside from the entirety of Subsystem 1 or 2, it is no longer considered part of your Robot. However, please be mindful of <G11>.
Thus it is illegal to intentionally detach parts of your robot.