Answered: Using Field to Change Configuration

[NHRC-Vin]

Consider this event: Prior to the start of a match, a robot rests against the wall of the field, with an intake mechanism folded upward resting against the wall. This mechanism is attached to hinges, and is only held up by the wall of the field; once the robot moves away from the wall, gravity causes the mechanism to fall to a parallel alignment with the field. Is it legal to use the wall/fence of the field in this way? I understand the configuration of the robot is changed, but not by any human contact, only field contact.

[Karthik]

Consider this event: Prior to the start of a match, a robot rests against the wall of the field, with an intake mechanism folded upward resting against the wall. This mechanism is attached to hinges, and is only held up by the wall of the field; once the robot moves away from the wall, gravity causes the mechanism to fall to a parallel alignment with the field. Is it legal to use the wall/fence of the field in this way? I understand the configuration of the robot is changed, but not by any human contact, only field contact.

This is legal, provided no other rules are violated in the process. However, if employing this strategy, one must be well aware of <R4> from the VEX Gateway Game Manual.

<R4> At the beginning of any match, robots must be smaller than 18” x 18” x 18”.
a. During inspections, robots will be measured in one of two ways
i. Robots will be placed into a “sizing box” which has interior dimensions matching the above size constraints. To pass inspection, a robot must fit within the box without touching the box walls or ceiling.
ii. Robots will be sized using a VRC Robot Sizing Tool. Robots will be placed on the base plate and must not touch the measurement slide as it is passed over the base plate. Please see http://www.vexrobotics.com/275-1455.html for a visual reference
b. Robots may expand beyond their starting size constraints after the start of a match.
c. Any restraints used to maintain starting size (i.e. zip ties, rubber bands, etc) MUST remain attached to the robot for the duration of the match.

Thus, the intake mechanism that you plan to have resting against the wall of the field, is not permitted to touch the sizing box or sizing caliper during inspection. So relying on the field to keep your robot with the 18"x18"x18" limit, may result in you having a robot that is unable to pass inspection.