Answered: <R1> and VEX U

[AlecMiller]

<R1> states that

Only one (1) robot will be allowed to compete per team in the VEX Robotics Competition. Though it is
expected that teams will make changes to their robot at the competition, a team is limited to only one (1)
robot. The VEX Robotics Design System is intended to be a mobile robotics design platform. As such, a
VEX robot, for the purposes of the VRC, has the following subsystems:
Subsystem 1: Mobile robotic base including wheels, tracks, legs, or any other mechanism that allows the
robot to navigate the majority of the flat playing field surface.
Subsystem 2: Power and control system that includes a VEX legal battery, a VEX control system, and
associated motors for the mobile robotic base.
Subsystem 3: Additional mechanisms (and associated motors) that allow manipulation of game objects or
navigation of field obstacles.
Given the above definitions, a minimum robot for use in any VRC event (including skills challenges) must
consist of 1 and 2 above. Thus if you are swapping out an entire subsystem of either item 1 or 2, you have
now created a second robot and are no longer legal.
a. Teams may not compete with one robot, while a second is being modified or assembled.
b. Teams may not switch back and forth between multiple robots during a competition.

however, the VEX U rules allow for an unlimited number of robots

Instead of a 2-team vs. 2-team format, VEX U matches will be played 1-team vs. 1-team, with a twist:
each team will use TWO Robots in each match. This means every team gets to build their own partner!
o Teams are allowed to build as many Robots as they would like, but only TWO (2) may be used on the
field during a Match. They may only bring two (2) Robots from the pit to the playing field for any Match.
o All Robots must pass inspection before they are allowed to compete.

Does effectively nullify <R1>? For example, would it be permitted in VEX U to completely switch out either subsystem 1 or subsystem 2, provided that any configuration used in a match has been inspected?

[Karthik]

Does effectively nullify <R1>? For example, would it be permitted in VEX U to completely switch out either subsystem 1 or subsystem 2, provided that any configuration used in a match has been inspected?

Yes, supercedes <R1> for VEX U matches. So may freely switch between any number of Robots and or subsystems, provided all configurations have been inspected.