There was a deal they had going on Ebay, I don't know if its still up or not but it was 2 QEVs for like $24. I just got mine today, they were 3/4". It was a score when I opened the box and saw 2 packages instead of one. =)

The seller was CRAZYKWAY

Nice job.

So did you have the ball valve on the cannon then you switched to the Sprinkler valve?

alright thanks

Hi I was wondering if this kind of QEV would work.

http://cgi.ebay.com/PARKER-MODEL-OR75B- ... dZViewItem

Thanks

Yea thanks guys. @Sthorne - I haven't put my others up because they are crap. They shoot great but look terrible. Yea the wiring is a little messy, but my buddy is getting me some of the tubing used to protect wires under the hoods of cars. thats what I'm going to cover it all up with. And you do ha...

Alright, Thanks

I went through some cannons and got it all sorted out now. In a day or 2 I will post plans. See if everything lines up the way it should.

This is my third Combustion cannon that I have built. It is by far the best cannon I have built. Cannon, chamber and barrel apart. http://img204.imageshack.us/img204/8146/fullcannonzn0.jpg Chamber Dimensions: Diameter-3in Length-18in Ball Valve-1in Chamber Assembly http://img165.imageshack.us/img165...

Alright, so theres an outstanding vote for the QEV. I think I know a guy who can get me one for only a few bucks. So I had the Sprinkler Valve figured out. Now I have to wrap my head around the QEV concept. Can I still use a BlowGun to trigger the valve? And I'm assuming I can still use PVC? So I ca...

Alright, that helps alot. @Isomer- The Allowance puts me at $200 I should have added that part in. So me tinks I might have enough. I guess I will really have to look into that QEV again. See exactly how to set it up. With a Bolt action setup, you would most likely need O rings or some form of seal....

Alright, I just recently got my allowance. And of course it is burning a hole in my pocket. So I want to build a "Sniper". But there are a few questions I have. Now I want to use a Sprinkler Valve, I'm not to enthused to go and try and figure out a QEV right now. So, 1) I would like to use a Copper ...

Or if you would have a car available where you are shooting you could get a fairly cheap DC power Air pump, that hooks into your car cig lighter. Thats what I use to pump up my water rockets. And I believe you can get them fairly cheap to. I may be wrong tho. But I dont know if you have access to a ...

alright, thanks a bunch.

I see it much more clearly now.

-BlackWater18

So does it really matter whether you have a direct connection to the blow gun? Or is it fine if you use pressure tubing?

Alright, I have a question about the sprinkler valves. I saw the tutorial on You Tube on how "mod" it. But I was reading other peoples posts when I was searching and they said to put the blow gun straight to the valve, how do you do that? Do you need something thats 2 sided for a connecter? Sorry it...

Alrighty, thanks for the info.