Quote:
Originally Posted by connoc1
This is awesome! Did it ever miss the bar in matches/practicing on a bar? If it did, did it fall back onto the robot or break the extension length rule? Thanks!
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We had a few missed shots (some due to not being able to align correctly, since our bumpers can interfere with alliance partner bumpers when we're all on the batter, and some due to week shots because we didn't load it properly). The climbing rope tends to yank the grappler straight back at the robot, and it doesn't stray far from our frame perimeter. As far as I know we never received a penalty for exceeding the 15" on a missed shot during the Vegas regional.
Quote:
Originally Posted by trumpthero786
Do you have any close up pictures of the system, particularly the rubber bands or latex you were talking about? And then how are you winching up? Is it a PTO or separate gearbox?
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The best picture I have of the latex is in the image in the first post. On the grappler itself, the latex is looped in a way that keeps the grappler open, but as soon as it hits the pole the claws snap over center and the latex clamps them together.
Our gearbox was a toughbox nano with a 1/2" ratcheting wrench zip tied to the side:
http://i.imgur.com/YwcDhV6.jpg
The 1/2" output shaft acts as the spool for the rope.
Quote:
Originally Posted by BotDesigner
What is terrifying about this is that it could be cheesecaked on almost all stronhold robots. I bet cheesecaked scalers like this are going to be a familiar sight come Champs.
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Great minds must think alike! We built a second one during the Vegas regional for cheese caking purposes and bagged it with the robot.
Quote:
Originally Posted by Roboshant
Amazing mechanism! Especially for something done over the course of a competition! Is that a shaft collar being used to attach the fiberglass on to the hook? Also, I'm not a hundred percent sure about this but, one of our mentors said that fiberglass was not legal for use, as it shatters if it breaks and can cause splinters if not handled correctly.
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The large shaft collar acts as a clamp to hold the 1/2" hex shaft onto the fiberglass rod. Generally fiberglass material has not been ruled as dangerous by inspectors, especially rods like the ones we used. Teams have been using them for years.