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Unread 29-01-2009, 13:54
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Re: carmen ball handling

How you make the quarter pipe curve might depend on what else the balls are doing that will ride on it. We are using some thin 3/4" poly tubing as bottom and side rails, to guide the balls up from the harvester to the shooter, with a kind of flapper wheel thing in the middle to drive them. If the balls will be compressed against the quarter pipe, then it needs to be pretty substantial, and the idea of using several plywood supports sounds good.

Oh yeah...nice job Falcons! Looks like you're getting the pieces of the puzzle all put together
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Unread 29-01-2009, 15:57
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Re: carmen ball handling

Make sure those spikes don't leave the bumper perimeter.
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Unread 29-01-2009, 16:26
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Re: carmen ball handling

wow very nice, how did you connect the polycord? Is that urethane belting that you are using? hmm, we were thinking about doing a lift similiar but oriented a little differently using 1/8" urethane orange belting...do you think 1/8" urethane belting is good enough to grip the ball? Thank you for sharing your knowledge with the FIRST community
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Unread 29-01-2009, 16:40
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Re: carmen ball handling

Quote:
Originally Posted by neoshaakti View Post
wow very nice, how did you connect the polycord? Is that urethane belting that you are using? hmm, we were thinking about doing a lift similiar but oriented a little differently using 1/8" urethane orange belting...do you think 1/8" urethane belting is good enough to grip the ball? Thank you for sharing your knowledge with the FIRST community
We are not that familiar with the other materials you mentioned, we are using green polycord from Duracord. It rips the balls good. It doesn't stretch much, but enough .
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Unread 29-01-2009, 16:41
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Re: carmen ball handling

Quote:
Originally Posted by AlexD744 View Post
Make sure those spikes don't leave the bumper perimeter.
We will make sure thee tubes are in dimension
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Unread 29-01-2009, 16:43
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Re: carmen ball handling

Quote:
Originally Posted by squirrel View Post
How you make the quarter pipe curve might depend on what else the balls are doing that will ride on it. We are using some thin 3/4" poly tubing as bottom and side rails, to guide the balls up from the harvester to the shooter, with a kind of flapper wheel thing in the middle to drive them. If the balls will be compressed against the quarter pipe, then it needs to be pretty substantial, and the idea of using several plywood supports sounds good.

Oh yeah...nice job Falcons! Looks like you're getting the pieces of the puzzle all put together
Thanks Jim! How are you guys?
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Unread 30-01-2009, 10:50
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Re: carmen ball handling

Looks like a solid design coming together 842. Now we just have to wait and see how orbit balls will be flying out of top of this year's robot...

Have you tried driving up to balls and picking them up yet?
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