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Unread 12-08-2013, 10:21
Kevin Leonard Kevin Leonard is offline
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Re: Frisbee shooter surface?

We just had some HDPE on our floor surface. But we also weren't built to shoot more than a short distance. Our prototype had a wooden surface for the floor, and it shot ever further than our competition bot, but that's more likely due to the additional compression on the prototype.
I think the wheel surface and the surface of the opposite edge it's contacting are far more important in determining accuracy and distance.

If you were to follow any of these people's advice, though, I'd recommend 2468's. Have you seen their shooter? It's deadly accurate from absolutely everywhere on the field. Their's has to be the most consistent shooter I've seen in FRC this year. (Even more consistent than 67, I'd say).
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Unread 12-08-2013, 10:49
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Re: Frisbee shooter surface?

The base of the shooter was lexan. There was some roughtop tread on the opposite side from the shooter wheels. We used Pledge (it's a spray) that made the surface very slippery.
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Unread 12-08-2013, 11:18
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Re: Frisbee shooter surface?

We initially used powdercoated aluminium on both sides of the frisbee, and it worked fine. Later we constrained the frisbee better using two HDPE blocks / strips on the 'top' and powdercoated aluminium on the bottom. If we did it again, we would probably have a pair of HDPE strips on both the top and the bottom. The important thing is to constrain the frisbee so that it cannot flex or tilt significantly.
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Unread 12-08-2013, 12:17
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Re: Frisbee shooter surface?

Our setup is similar to 1310's, with a few minor differences. The bottom of our shooter path is entirely HDPE instead of having strips. The back of the arc is also made of layered HDPE - so it's slippery instead of grippy.
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Unread 12-08-2013, 13:57
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Re: Frisbee shooter surface?

We ended up using Glasliner FRP, better know as the regolith used in 2009. We added a car wax spray to it once or twice a tournament and found it worked quite well.
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Unread 12-08-2013, 14:50
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Re: Frisbee shooter surface?

Team 708 used 1/2 inch polycarbonate, see the attached photos. Sorry for quality, it is what we had on our website

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Unread 12-08-2013, 22:08
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Re: Frisbee shooter surface?

Quote:
Originally Posted by Thunder910 View Post
If you were to follow any of these people's advice, though, I'd recommend 2468's. Have you seen their shooter? It's deadly accurate from absolutely everywhere on the field. Their's has to be the most consistent shooter I've seen in FRC this year. (Even more consistent than 67, I'd say).
Wow, thank you so much for the praise we really "appreciate" it. But my best advise would be to make one shooter multiple times with many of the different materials listed (there are some great shooting teams giving their advise on this thread).

And our machine was built mostly for long distance. Just something to keep in mind when comparing materials and shooters
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