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Unread 07-03-2014, 16:14
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Re: Were to store practice bot at regional?

Quote:
Originally Posted by Jaxom View Post
It depends. If you bought the wheel/pulley combination, already assembled, from Wheels R Us, then it's a COTS item. If you bought the wheel from Wheels R Us, and the pulley from Pulleys R Us, then it's a FABRICATED ITEM (the definition of which includes "constructed", "manufactured", and "produced"). Like it or not, silly or not, that's what the rules say.
You're absolutely right, that is what the rules say, I'm just illustrating some of the more frustrating bits of them.

Your expansion on the wheel and pulley example actually makes me think of another interesting COTS part case... We bought transmissions from a COTS vendor this year, as did many other teams. The transmissions came with all of the parts required to complete the transmission, including a pneumatic cylinder, motors, pinions, etc - but we were required to assemble the transmission.

Now, is the assembled transmission still considered a COTS item, since it was bought with all of these parts as a complete unit, although the vendor does not assemble the transmission? Does the assembly of the transmission make it a fabricated component?

Quote:
Originally Posted by Jaxom View Post
I'm going to say "no", with an evil grin. Since the bumper rules (somewhat) clearly define fasteners -- and say that "tie wraps" (which I'll translate to "zip tie") are not allowed to attach bumpers to the robot -- the whole thing isn't a FABRICATED ITEM. The plywood is, though -- you drilled holes.

Note that my tongue is firmly in my cheek on this, but wouldn't it be simpler to just put the parts in some kind of container? You may need the zip ties to make repairs on your ROBOT.
I see what you did here... I guess I was trying to illustrate a different way to view the fabricated parts rules, but may have been stretching things a bit. The TLDR with this point is basically that if a practice robot is being used as a storage 'thing' for a series of COTS parts, is it any different than having them in a tote/box/etc? Not really, or at least I don't think so.... Thankfully, we keep our parts in boxes and bins, since they're significantly easier to move around...
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