Robotics Education & Competition Foundation
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Official Q&A: VRC 2020-2021: Change Up

Usage Guidelines All Questions

Request for reconsideration - 3D printed part for field

Doug Hepfer (Event Partner)
11 months ago

We had submitted a request to use a 3D printed part to secure the side goals to the side of the field. This goal, as originally designed, is failing in use 100% of the time. It is not possible to keep the height of the lower ring within tolerance throughout a match without some additional support. The PVC posts are not rigid enough to hold keep the rings of the goal in place through normal game play.

The 3D printed part we have suggested provides needed support by securing the second ring to the field side. Without support, these goals do not hold up to game play and the opening between the first and second ring cannot be maintained within the required specification.

We are happy to provide the files for the 3D printed part to VEX and to all all event partners. Or we are open to a metal bracket, similar to that used in the field corners.


Answered by Game Design Committee

As noted in the original question:

In certain circumstances, this modification hinders the intended performance of the goal, and was intentionally not included in the original design of the field. Therefore, this modification will not be legal to use during an official competition.

We would advise any Teams or Event Partners having repeated failures of this nature to take care not to over- or under-tighten the rings onto their PVC pipes. If the ring is overtightened, there may be white discoloration in the plastic around the nut/screw, and it may even crack. If the ring is under-tightened, the PVC pipe will be very easy to slide and cause out-of-tolerance failures like the one shown in your photo.