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  • Spring-Loaded Puncher

    We would like to use a spring-loaded puncher, which we will make, to punch the ball. Is that permitted? Is there a load limit? We also will probably use a winch – are there any restrictions on that? Can we use a commercially available one for that?

  • #2
    Re: Spring-Loaded Puncher

    Hi,

    Welcome to the FIRST forums!

    Just a reminder that while this forum can be used to discuss rules and other posters are free to provide their interpretation, official responses will only be provided via the FRC Q&A system http://www.usfirst.org/roboticsprogr...c/game-q-and-a. Make sure to search the appropriate Q&A sections before asking a question to see if your question has already been asked.
    FIRST®
    FRC Robotics Engineer

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    • #3
      Re: Spring-Loaded Puncher

      Originally posted by slasker View Post
      We would like to use a spring-loaded puncher, which we will make, to punch the ball. Is that permitted? Is there a load limit? We also will probably use a winch – are there any restrictions on that? Can we use a commercially available one for that?
      Everything is permitted which is not explicitly prohibited. Thus there is no rule that says "no punchers" or "no winches". The real question you must address in this sort of a high-energy system is G3 which says "ROBOTS whose operation or design is unsafe are not permitted." If you use a high load spring to store hundreds of joules of energy in a mechanism you need convincing evidence that the mechanism will not break in operation and send shards of puncher off at high speed. Thus the load limit is the load you can safely control. There are many rules for COTS mechanisms that would apply to your commercial winch. It can't cost more than $400 per R11. It can't use an electric motor that's not listed in R29. Et cetera, the word "winch" does not appear in the rules, so it won't be excluded for winch-iness. You just have to make sure it complies with all the other rules.

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