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Unread 01-02-2013, 18:21
MelodyPond MelodyPond is offline
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Re: Full Court Shooting: Over 80ft total distance

That's the next step! Thanks for keeping us on track. Today we added a guard to keep the disk from riding up on the wheel at the end. That way we don't curve quite as much. We're also working hard to master encoders and PIDs to monitor the motor speeds. We're going to keep on tweaking. Since we're only a second year team, those major programming tasks are quite a challenge to tackle. However, we aren't about to back down from a challenge!
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Unread 01-02-2013, 18:35
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Re: Full Court Shooting: Over 80ft total distance

That's really impressive. What kind of wheel is that? Our team has had difficulties with wheel types so far.
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Unread 01-02-2013, 19:00
MelodyPond MelodyPond is offline
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Re: Full Court Shooting: Over 80ft total distance

We're using an 8" aluminum plaction wheel with rubber wedgestock tread. However, in one of our tests the tread popped off, so we added extra pop-rivets.
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Unread 01-02-2013, 19:23
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Re: Full Court Shooting: Over 80ft total distance

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Originally Posted by MelodyPond View Post
We're using an 8" aluminum plaction wheel with rubber wedgestock tread. However, in one of our tests the tread popped off, so we added extra pop-rivets.
Can you provide a link to the wheel you're using? An '8" aluminum plaction wheel" isn't a real thing.
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Unread 01-02-2013, 19:34
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Re: Full Court Shooting: Over 80ft total distance

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Originally Posted by Madison View Post
Can you provide a link to the wheel you're using? An '8" aluminum plaction wheel" isn't a real thing.
I believe he is referring to this: 8" Aluminum Plaction wheel
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Unread 01-02-2013, 19:37
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Re: Full Court Shooting: Over 80ft total distance

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Originally Posted by WileyB-J View Post
I believe he is referring to this: 8" Aluminum Plaction wheel
That's not a plaction wheel

http://www.andymark.com/Plaction-s/103.htm

Plaction is a portmanteau of plastic and traction.
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Unread 01-02-2013, 19:46
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Re: Full Court Shooting: Over 80ft total distance

All terms aside, the wheel WileyB-J is referring to (http://www.andymark.com/product-p/am-0133wa.htm) is what we're using. Oh, and I'm a girl!
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Unread 01-02-2013, 20:11
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Re: Full Court Shooting: Over 80ft total distance

This is alot like using a jackhammer to hammer a nail.
Your extra distance isn't worth much if the Frisbee veers off every time.

Still, it's cool to see those Frisbee's being shot with so much power.

Last edited by Sean Raia : 01-02-2013 at 20:13.
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Unread 01-02-2013, 22:59
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Re: Full Court Shooting: Over 80ft total distance

Quote:
Originally Posted by MelodyPond View Post
That's the next step! Thanks for keeping us on track. Today we added a guard to keep the disk from riding up on the wheel at the end. That way we don't curve quite as much. We're also working hard to master encoders and PIDs to monitor the motor speeds. We're going to keep on tweaking. Since we're only a second year team, those major programming tasks are quite a challenge to tackle. However, we aren't about to back down from a challenge!
In other news, you really want to do bang-bang control for your shooter speed. It's simpler to program, easier to tune, and gets your flywheel up to speed much faster than a PID.
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Unread 01-02-2013, 23:33
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Re: Full Court Shooting: Over 80ft total distance

1. What material are you using for the "fence" (curved wall that is on opposite side of Frisbee from the spinning wheel) in your shooter?
2. How much compression are you using?
3. Are you running your CIM at full speed (looks like you gear up the wheel to spin faster than the CIM)?
4. Any idea on the RPM of the wheel you are shooting with?

We are testing a similar design but not getting nearly the distance that you are. We don't want to shoot full court, but it may become necessary depending on how the game plays out.

Thanks.
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