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  #16   Spotlight this post!  
Unread 16-08-2005, 02:26
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Re: pic: Team Fusion's T-Shirt Shooting Robot

I suppose this would definatly be an attention getter and spread the team a little. Jow did you go about getting permission to do it? or did no one really care? Just curious.

_Mike
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Unread 16-08-2005, 11:40
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Quote:
Originally Posted by mechanicalbrain
I'm not sure you would want a revolving reloader. You would need a way to maintain pressure.
Discovery Channel fans may remember the Monster Garage epidose when they made the Delivery Truck. A small air cannon was mounted on the top of the truck and had four rotating barrels. When rotated, the barrels would slide forward; when they were lined up with air valve, they slid backwards a bit onto it making the seal. I can't find any real good pictures online of it, but here is one that at least shows it:

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  #18   Spotlight this post!  
Unread 16-08-2005, 11:41
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Quote:
Originally Posted by sanddrag
Also, do you have a video of this thing in action? I find it hard to believe that a shirt can go that far on that little pressure (but then again I have never built one). Maybe it is just a massive volume of air and a fast valve that does the trick?
Quote:
Originally Posted by Mike AA
I suppose this would definatly be an attention getter and spread the team a little. Jow did you go about getting permission to do it? or did no one really care? Just curious.
_Mike
I will make sure we get some pictures and video after the first football game, but that will not be until the 26th.

All we really did was demonstrate it for our principal a couple of times and then no one had a problem with it.
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Unread 16-08-2005, 11:48
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Did you use the stock KOP air compressor? If not what did you use?
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Unread 16-08-2005, 12:17
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Everything on the robot was from our 2004 competition bot. We used the KOP compressor and left all of the pneumatic parts on the robot. The only significant change we made was we let the electrical team rewire the robot before last years build season.

The only down side to using the KOP compressor is that it takes a couple of minutes to build the pressure up. If we take our time reloading shirts then it isn't a problem.
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Unread 16-08-2005, 16:21
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Quote:
Originally Posted by mechanicalbrain
The problem with that idea is you need a way to separate the shirts. Maybe give the shirts a casing like wrap them in saran.
The problem with Saran wrap is that it is made to cling, so it might cling to the PVC. Not that it always clings when and where I WANT it to!

Now I'm trying to picture what would happen to a T-shirt shooter with the T-shirts wrapped in cling wrap, especially if they did stick inside.
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  #22   Spotlight this post!  
Unread 16-08-2005, 16:29
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Well obviously not saran itself (although actually i would work since i believe it sticks though static which means it wouldn't really stick under pressure) but a thin plastic wrap will make the shots much better.
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  #23   Spotlight this post!  
Unread 16-08-2005, 17:11
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Re: pic: Team Fusion's T-Shirt Shooting Robot

We did try using Soft Drink bottles cut in half and the t-shirts rolled up and stuffed inside. They fit perfectly, but tended to flip over and go 'heavy end first' into the crowd. Now we put two or three rubber bands around the shirt and let 'em fly!
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  #24   Spotlight this post!  
Unread 28-08-2005, 17:18
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Quote:
Originally Posted by NoodleKnight
What are you using as the valve? SCH40 PVC is good up to it's pressure rating, which should be printed on the tubes, and I think it's far past 250 psi. The PVC joints are always built stronger than the pvc piping, so as long as you cured/glued the joints correctly, all will be fine.
I always like to put my psi limit depending on the valve, I usually use a normal sprinkler valve, which is good to 120 psi; so I set mine to 100-110 psi and it can shoot stuff far enough for my purposes. If you're using a ball valve, you could go higher, but at that point I'd be scared, lol. I suppose you could make some type of scatter shield for it.
If you're having problems shooting the t-shirt high up into the stands, try cramming the shirt down the barrel, hard. You don't want any air bleeding past the t-shirt.
I was looking at sprinkler valves and the ones I saw were 24 V AC. How did you power yours?

Allan
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Unread 28-08-2005, 18:57
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Quote:
Originally Posted by N7UJJ
I was looking at sprinkler valves and the ones I saw were 24 V AC. How did you power yours?

Allan
This project so inspired me, I had to have one. So, I built it. Now it is on our bot from 2005. We demo'd it at Freshman orientation night, talk about a hit!!!
We used a non-flow regulated in-line 1" valve from Rain Bird. I had the same question about the 24vac coil and 12vdc supplying it. All I have to say is, it works great. We are using a spike to trigger it.
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Unread 28-08-2005, 21:50
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Re: pic: Team Fusion's T-Shirt Shooting Robot

We have videos of our cannon at a football game and a pep rally. I am going to post them after we get through with this hurricane.
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Unread 28-08-2005, 22:14
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Does anyone have plans for this sort of thing? How do you release that pressure?
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  #28   Spotlight this post!  
Unread 05-09-2005, 12:55
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Wow, we should make one of those for the football games... it could replace our QB

JT
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Unread 25-09-2005, 14:09
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Where did you guys buy your pvc tank?
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Unread 25-09-2005, 14:54
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Re: pic: Team Fusion's T-Shirt Shooting Robot

Uh I don't think you buy PVC tanks you can make them quite easily though. Where are the videos!!! Ive been waiting!
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