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The Q&A is closed for the 2021-2022 season. Any rule changes or clarifications pertaining to the 2022 VEX Robotics World Championship will be included in the April 5 Game Manual Update. Teams attending VEX Worlds who wish to pre-submit questions for the driver's meeting should have received a contact form via email; if not, please contact your REC Foundation Team Engagement Manager for more information.

Official Q&A: VRC 2021-2022: Tipping Point

Usage Guidelines All Questions

843: Elevating a robot using the platform base


386E
14-Aug-2021

According to this Q&A https://events.vex.com/VRC/2021-2022/QA/818, the Platform includes the black plastic towers. Would this mean that if a robot was able to lift itself just using the towers, it could count as elevated? The definition for elevated is:

  1. The Robot or Mobile Goal is contacting their Alliance Platform.
  2. The Platform meets the definition of Balanced.
  3. The Robot or Mobile Goal is not contacting any other Field Element, such as the foam field tiles or the field perimeter.

Now most methods of trying to lift using the tower would be a G16 violation, which states:

<G16> Don’t clamp your Robot to the field. Robots may not intentionally grasp, grapple or attach to any Field Elements. Strategies with mechanisms that react against multiple sides of a Field Element in an effort to latch or clamp onto said Field Element are prohibited. The intent of this rule is to prevent Teams from both unintentionally damaging the field and / or from anchoring themselves to the field.

However, through testing we found that there is a rectangular gap between the hinges and the tower, which is slightly smaller than a 2-wide c channel. If a robot were to stick a metal channel into there, and lift itself off of the ground using the channel, it could reach the definition of Elevated, as long as it doesn't cause the hinge to lift off of the tower, as per the definition of Balanced:

  1. The Platform is roughly parallel to the field.
  2. Both flat surfaces of the Platform hinges are contacting the Platform base, as shown in Figure 7.
  3. Robots and / or Scoring Objects contacting the Platform in their Alliance Home Zone are not also contacting any other Field Elements, such as foam field tiles or the field perimeter

So would it be a legal strategy to elevate the robot using this method? It is reacting against multiple sides of the platform, but it is not latching on or clamping, and will fall out the moment the platform is tipped, so I don't believe it'd be a G16 violation.

Answered by committee

In version 2.0 of the Game Manual, the definition of Platform was updated to read as follows:

Platform - The 53.0” x 20.1” (1,346.2mm x 511mm) hinged polycarbonate device and the attached red or blue PVC pipes (highlighted below in Figure 17), located in each Alliance Home Zone, that sits 9.5” (241.5mm) high off of the ground when Balanced. The Platform is attached to a double hinge that allows it to tip towards the field in either direction.

Q&A 818 was also updated accordingly.

Under this revised definition, contact with the black supporting structures would cause the Robot to no longer meet the definition of Balanced.