Team 2264 t-shirt cannon
 

We decided to do make a t-shirt cannon. I made this thread for advice on building one, anything helps!

-CC

Re: Team 2264 t-shirt cannon
 

I would take a good look at team 254's T-shirt cannon, Shockwave:

http://team254.com/shockwave/

Most T-shirt cannons aren't this advanced (or beautiful :D ) but it's worth looking into their process.

Re: Team 2264 t-shirt cannon
 

If you do a quick forum search you will find some good info, a lot of teams seem to be building canons...

Re: Team 2264 t-shirt cannon
 

I have looked at the threads, but many point to 254's cannon. The main issue we have with their design is we cannot find what solenoid they're using (it's out of date?) and you cannot adjust distance with it.
-Also, t-shirt cannons are a great way to promote sponsors (more money for your team) and your team.

Re: Team 2264 t-shirt cannon
 

To adjust for distance you simply change the pressure that you charge the system to. more pressure=more distance (in theory, at least).

Re: Team 2264 t-shirt cannon
 

I was specifically talking about the 254 cannon, they had one fast acting solenoid (no change of pressure in a pre-fire tank). I also haven't understood what pressure they keep their scuba tank at (150 psi or the 3300 psi the tank is rated for?).

Re: Team 2264 t-shirt cannon
 

They keep their tanks at 3000psi, they're always charged. The solenoid they use is very expensive, I can't remember where they got it. It is adjustable, although even on the shortest distance setting it goes VERY far.

Re: Team 2264 t-shirt cannon
 

That is not correct. This would be EXTREMELY dangerous, as the solenoid is only rated to 150 PSI (I believe).

We have one tank at ~3000 psi and the "accumulator" tank at ~150 PSI.

We can sort of adjust distance by changing the time the solenoid is open for.

We got the valve from MAC. I would say that this isn't such a specialized application that the exact valve we used needs to be used.

I would encourage teams wanting to create something similar to research what's out there. We picked the valve we used for a number of reasons, safety being the primary concern. Even if the exact part number does not exist anymore there are countless functionally identical valves out there.

Re: Team 2264 t-shirt cannon
 

Sorry, my mistake.

Re: Team 2264 t-shirt cannon
 

hey check oyt team 540's t-shirt bot. here is the link.
http://www.team540.com/cms/index.php...obots&Itemid=7

Re: Team 2264 t-shirt cannon
 

How do you manage pressure between tanks (how do you keep one tank at 150 psi?), pressure regulators are pretty expensive when you deal with ~3000 psi.

How many shots can you get off with one tank at 150psi?

Re: Team 2264 t-shirt cannon
 

We based our t-shirt cannon off of 254s layout. What we used and thought was safest was the K value that connects to the 3000psi SCUBA tank and then the 150psi SCUBA regulator which is not very expensive.

The accumulating tank at 150psi for us is enough to shoot one t-shirt about two hundred feet.

Our team's page with info about the T-Shirt Cannon. Hope to get an engineering journal of it within the month.
http://kalanirobotics.com/team3008/R...velopment.html

and a video of ours
http://www.youtube.com/watch?v=Vdh5rjAcDMI

Good luck!