Sorry about that guys. I don't actually know what happened but I fixed it.

Thanks, what's a jb weld?

I believe that's right, but I could figure all of that out after I got it (by blowing in the ports and feeling for where it comes out.) I just need to know that those are the only three ports, cause I don't wanna be leaking propane. Yikes!

Okay, I'm planning on building a propane cannon. I think it would be really cool to have one of those 3-way valve setups, where one port connects to the propane supply, one to the meter, and the other leads to the chamber so that you can push one button and it releases the fuel from your meter into ...

These pieces are from left to right: 2" to 1 1/2" reducer, 1 1/2" flush to 1 1/4" threaded bushing, 1 1/4" threads to 1" threads, 1" male, 1" flush to 1/2" flush bushing. Usually for threads you would use teflon tape but I cemented most of the threads because I'm not planning on taking it apart. The...

Looking good. :lol: have you shot it yet? what are your dimensions? The chamber is a little less than 3ft of 2" sch40, and the barrel inside is almost 5 ft of 1/2" The whole thing is a about 5' 6" long Having a modded sprinkler valve will not only be egronomical, (Yes, i did steal that word from so...

I attempted to build a Piston cannon twice before, with no success. After some more time and researching I decided to give it one more try. This cannon was a success and is a lot of fun to shot. Its surprisingly powerful considering its only 1/2 inch flow. The black disc is a piece from a bike inner...