I did that with my bb gun. I used a 1/4 inch brass nipple, duct tape, and a little epoxy. It works great. Ive never had it fall off or crack or anything like that.

Ya i get what you are saying keep it real. That would work, but I wouldnt trust it. I Think I am going to just moddify my current coaxial. hawkeye- Thats why you do it before you glue the tee on. You dont need to shorten anything, you just need to use some pipe. And if its copper why dont you just u...

Yes, thats exactly how it works.

I already posted this on spudtech And now I'm posting it here. http://img362.imageshack.us/img362/2290/project1zk5.png Will this work? I call it the "hi loader". The idea is that a paint ball or a marble drops in the barrel and chambers as you are refilling. There would be two ball valves, one for f...

http://www.advancedspuds.com/propane.htm

Just build this and put a ball valve on it instead of a shrader valve.

Wait, how can the barrel not come out of the chamber? Is it a coaxial combustion? Just take a wine cork, drill a hole in it, and attach the tourch head.... Maybe? That way you could have a decently tight seal and it would come off. Id like some pictures, im sill stumbed about the barrel that dosnt c...

If you had a 1'' chamber that was 4'' long and a 1/2'' barrel, the appropriate barrel length would be about 10-11 inches. As for the meter- have a nipple and a ball valve on the end cap. Use a pressure guage that goes up by 1 psi at a time.attach the it to a tee and the tee to the nipple/ballvalve. ...

Thats a cool valve, but isnt this all it is? (you have all probly seen this, but here it is)

http://www.koolpages.com/potatohell/pnuematics.html

I already said this in another forum, but I'll say it again. I just molded my piston out of hot glue sticks and bolted a piece of rubber from an inter tube from my bike on it. it works well and seals every time.

I molded my piston out of hot glue sticks and bolted a cut up inter tube on it. it works great and seals every time.

Well, it will cost about $50-70 but, you need to use brushings instead of reducers. reducers are made out of dwv, most of the time. Brushings are made out of pvc, which is much stronger. I suggest making a piston gun. they are really simple, more powerful, and cost less if you know what you are doing.

The nozzle is that thing you push down with your finger. Use a mapp gas tank and a blow tourch, it comes out slower and is more powerful and much easyer to ignite.

the problem is probly the fact that the piston is to loose. if its loose it loses alot of power. the site below is for a airgun kit that i bought. it comes with a piston and a extreamly powerful spring. the piston fit perfectly into 1'' pvc sch40. i havent made a connon out of it, but im almost posi...

here is a cheap design. get about 5 feet of 2 inch pvc, a 2 inch ball valve and a 2 inch end cap. this will be about $13 to build and you will get about 200 yards out of it . cut the 5 foot pvc into two peices. one about 2 feet (for the chamber) and the other 3 foot peice as a barrel. glue the two t...