I know I am just a lurker on here, but you guys always seem to come up with the best ideas, so maybe you can help me out. I am wanting to turn this design into an emblem for my 2000 Celica, since some idiot stole my gt-s badge. I don't feel like paying the money for an authentic one, plus they only ...

I also have a 2 inch and a 1 inch barrel, I was using the 3 for testing.

Since I'm broke, I have the multiple barrels that way I can shoot many things and not have to worry about having a full gun for each item 8)

Okay, it's official, you are my new hero Jack. You may not have the chopping block avatar anymore, but you still amaze me with every post.

note: The water bottles are not the only thing I'll be shooting, I just had a lot laying around so I figured why not?

I'm still at the bottom of the learning curve, but I'm trying. I see you guys talking about velocity and muzzle energy. I noticed that When I only filled the bottles about 3/4 of the way they seemed to fly farther, but that may have been the trajectory of them as well. So for distance should I be ai...

Thank you JSS. It was the id problem and the valve data being wrong.
I feel like a dumbass now, and for the record GGDT does not lie.

That was the other thing I was going to use GGDT to play around with, and I have heard so many different things about the right ratio. So I figured I would just 0.8 like Burnt Latke (I know there's is for combustion)


What did I put in wrong?

So I finally had a day off work that I could test out my cannon without worrying about waking up the other people in the house. The gun is nothing special, I'll post pics when I get my hands on a digital camera again. Anyhow, I tried using ggdt to figure out the best weight for the projectile, and a...

I see where you're coming from with wanting to keep the forum idiot/litter free.

Makes me feel better that I made your a day a little better (or was it worse[you didn't say]) Didn't want to upset too many people before my 15th post

I have seen joel's mega cannon and I apologize for starting a new thread about a television episode. I just thought some people would like to know, and this is general discussion, it's not like it's in a help me post stating something along of the lines of "OMG WTF MATE I JUST SAW SOMETHING UNBELIEV...

Not sure if this is the right area but...

The new show on the discovery channel called smash lab is using a pneumatic cannon to replicate hurricane force debris.

I noticed one problem with it, when using 2" for the barrel, type in the true diameter which is more like 2.1 I saw a site once with the specs for all the different sizes and schedules.

I have the rainbird 1" JTV on my gun When I try to pressurize it all I get is a honking

edit: found a leak where the solenoid would be, trying more epoxy on it

what is this goal seek tool of which you speak?

I put in the basic formulas for myself, and then I got to thinking that some other people may find it as a useful tool, so here is my Calculator made in Microsoft Excel. Sheet 1 is for figuring out the length of barrel if you know the chamber's diameter and length, the ratio you are looking for and ...

perhaps your thinking it standing for First Encounter Assault Recon at least that's what the cover of the game says it means