Kinda frustrated; could someone please help?
Hi I was just about to order a carbin fiber tank from a guy that was initially slated to be around $235, then at the last minute he mentioned that I’d need a $129 hose for it to work with my air gun I’m going to get (condor).
I guess I need some explanation from either someone, or could someone send me a link to some instructions etc, on the easiest and cheapest way to hook my gun up to a tank. I’ve also found locally a decent deal on a regular 3000psi used scuba tank for $75 so that’s an option also, although I would much prefer the fiber tank the guy was selling (it’s about 12 pounds!), but I just can’t afford to pay as much in scuba gear as the gun itself (I totalled up the fittings he said I’d need, the $129 hose et. al. and it was like $500!).
Can someone shed some light for me here? Should I just go the cheap route of using the scuba tank for $75? If so what’s the least adapater stuff I’d need – and would I also need the $129 hose for that? Thanks
All Replies
Like I have provided for you before:
A 490cc tank is .49 liter (these are liquid volume) and .073cf at atmospheric pressure and 3.5 cf at 3000psi (gas volume)
Say you use 1/2(1500psi) of your 490cc tank and refill with an 80cf SCUBA tank it will take 1.75cf from your 80cf tank. If your 80 cf tank started at 3000psi it will now be 2943.
You will be best with a 4500psi tank, but you will save money and get a usable amount of shots, not full fills, from an aluminum 80. The aluminum 80 SCUBA tank will give you a lot of shots.
You can also tune your gun to use a lower pressure fill, not sure I want to try to explain that.
Rusty
negative one
If the tank is at 3000 and your gun is at 2000 then it will likely settle to 2800 on the first fill, 2600psi on the second fill etc……
Get a 4500psi tank………..
Seriously? I didn’t think you could do that; isn’t the tank only rated for 3000psi? Sounds dangerous(?)
About how many fills do you think I’d get out of a 3000psi scuba, if we’re talking .25 condor (stock) on its highest setting?
Not many places will fill to over the rated pressure. I wouldn’t count on that option.
Rusty
Rusty; You are right in saying that over filling a high pressure tank will lessen its life cycle. Then again, I’ve worn out so many SCUBA tanks that it’s just a cost for doing business and having fun. My tanks were never over filled to my knowledge but they do wear out over time.
Also, dive shops are not your only option for filling. Try making friends with you local fire department and ask where they get HPA. Additionally, the Navy fills to over 4000 psi for some systems. I know a few folks in the Navy if you need a resource. AKULA
In aluminum tanks it wears them out to overfill on a regular basis, they will fail hydro in a shorter time frame. It is common to fill them to 3300 warm, so they will end up at 3000psi when cooled down.
Some steel tanks on the other hand are commonly filled up to 4000psi (tanks rated to 2400+ which is 2640) in technical diving applications. Steel 72cf tanks are NOT one of the tanks that this is considered “safe” in the diving community.
Good luck trying to get a tank filled to these pressures unless you are in the cave diving areas of Florida.
There are some aluminum tanks rated to 3300psi.
Rusty
Seriously? I didn’t think you could do that; isn’t the tank only rated for 3000psi? Sounds dangerous(?)
I used scuba for years and still do even though I have a CF tank. When I ran off of the scuba as it ran down I just aimed a little higher….not to hard to figure out. I live only 5 minutes away from where I get it filled so using it up was not a big deal.
Now I first fill off of the scuba and top off with the CF tank. I can sip air for a long time this way. But when at the range or in the field traveling the CF tank really pays for itself in just the convenience.
These guys and their 4500 tanks… Sheesh! I use a scuba tank that’s rated for 3000 psi, but the scuba shop where I get it filled KNOWS what I am doing with it, so they regularly fill it to 3400psi for me. With that, I’m able to get several 3000psi top offs on my bottle and numerous more fills to 29 and 2800psi. Yes, a 4500 psi tank is nice, but do what your wallet allows you to and you can still have your cake and eat it to.
Ronald,
The difference is the way the adapters mount to the air tanks. The AF factory adapter is for SCUBA ONLY. The CF bottles require a different style adapter. Voltar1 kids you not. Nor do I. I believe that if you go the 4500 CF route you will be quite pleased. I used to fill my Condor bottle from SCUBA. Now that I have a CF tank I feel like I was in the Stone Age. Hope this helps you make your decision.
Harry
Get the 66cuft tank as a minimum and a fill hose etc as ‘JOE’ rec’ds
You cannot shortcut so bite the bullet and get out the dollars man 🙂
Walter….
So I’m just curious why I would need the expensive hose for the CF tank but not the scuba tank? When I add that into the price of the tank and the fittings I’m up around $500 🙁
let Joe help you make a selection. You got to forget the SCUBA idea as it is plain wrong for a high pressure gun.
Get the 66cuft tank as a minimum and a fill hose etc as ‘JOE’ rec’ds
You cannot shortcut so bite the bullet and get out the dollars man 🙂
Walter….
Aluminum tanks are 3000 or 3300 and mostly 80cf.
.
Well this is the guy I was/am considering buying a tank from: http://www.hamcontact.com/airgun/HoseAssembly/
I guess I don’t understand why I only need a scuba adapter for a scuba tank that is steel/aluminum, but yet I need the $140 hose if I’m buying a CF tank?
I posted recently that I had followed Adam’s lead and got the same set up he has. Excellent investment. 4500PSI CF is the ONLY way to go.
Harry
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Hey Voltar1…….. My old man always used to tell me that good advice falls on deaf ears. Me & you have done what we could with this one.
Harry