Robotics Education & Competition Foundation
Inspiring students, one robot at a time.

Official Q&A: VRC 2023-2024: Over Under

Usage Guidelines All Questions

<R20>(b) shoulder screw constraints


<R20> There were some very specific constraints put on shoulder screws that don't make sense. Current text says: Shoulder screws cannot have a shoulder length over 0.20” or a diameter over 0.176”. What was the logic in constraining shoulder screws?? The winch pulley system (part 276-1546) should be using a #6 with shoulder screws having shoulder dimensions slightly exceeding 0.160 by 0.325. Commercially available as "303 Stainless Steel, Star Head Shoulder Screw, 5/32 in. Dia. x 3/8 in. Long" would suffice (e.g., If constraining anything, limit the constraint to #6, #8, M3.5 or M4 threads, with maximum thread length, and recommend "star" or "Torex" sockets, for consistency.

Answered by committee

Please be sure to review the Q&A Usage Guidelines before posting, specifically note 1, "The Q&A system is for rules clarifications only." As noted, the Q&A platform is intended to be a communication channel for questions such as "Is this interpretation of a rule legal?", not a discussion forum to post questions such as "I disagree with this rule, can it be changed?" For those comments, please use the official VEX Forum or email [email protected].