aac prodigy

[BIRTHMACHINE]

Originally Posted by ungawa

Just a thought, are you shooting it in your house? Because the target is going to add a lot of noise when it is struck and it's hard to discern all of it from the sound of the discharge. In my experience. Also, consecutive rapid shots are more quiet than the first.

I wouldn't use ultrasonic couplant. Most of the stuff we have is vegetable based I think. Sometimes you can smell it going rancid. Try water, grease, shaving cream, or a commercial suppressor product.

What's the proplem with ut couplant? It's water based. I would think anything you would put in a can would make a mess.

[ungawa]

Originally Posted by BIRTHMACHINE

What's the proplem with ut couplant? It's water based. I would think anything you would put in a can would make a mess.

There are lots of good suggestions out there. Maybe the real question is, why do you want to instead use ultrasonic testing couplant?

It's just my gut. I'll check what ours is tomorrow. Our stuff gets rancid on the shelf, I think it has vegetable oil. Me, I'd rather use something either polar or non-polar. It would either be protective or easy to clean out. I don't want something that forms colloids easily, foams, milks, or is organic but still absorbs moisture. This is not based on any suppressor experience, just experience with machines. And not with ultrasonic testing couplant, just vegetable based fluids in general.

"water based" means a lot of things.

My comment probably had no real use, sorry. Just thinking about the stuff on our shelf and that I don't want it in my suppressor.

[BIRTHMACHINE]

Originally Posted by ungawa

Just a thought, are you shooting it in your house? Because the target is going to add a lot of noise when it is struck and it's hard to discern all of it from the sound of the discharge. In my experience. Also, consecutive rapid shots are more quiet than the first.

I wouldn't use ultrasonic couplant. Most of the stuff we have is vegetable based I think. Sometimes you can smell it going rancid. Try water, grease, shaving cream, or a commercial suppressor product.

its in a confined space! i can discern discharge, slide action and target noise. its just not very consistent, some shots sound really good-while other are much louder. i tried ut couplant and it works great! its movie quite.

[bogey1]

Originally Posted by BIRTHMACHINE

its in a confined space! i can discern discharge, slide action and target noise. its just not very consistent, some shots sound really good-while other are much louder. i tried ut couplant and it works great! its movie quite.

what is this ut couplant you speak of?

[ungawa]

It's a liquid used to interface an ultrasonic transceiver with a surface. Not sure if he is referring to ultrasonic thickness testing (what we use), ultrasound imaging, or something else.

[BIRTHMACHINE]

its sono trace couplant. used in with ndt. straight beam and angle beam ultrasonics.