Discovery fill station question?

[Tgomez82]

I just picked up a benjamin disco and was looking at buying a hand pump I found one for about $140 which I thought was a good deal, but then I saw I could pick up a 90ci 3K paintball tank for pretty cheap and get a fill station for it, and it would be about the same price of the hand pump. So my question is how many fills could I get in my disco out of a 90ci 3K or 45K air tank?

[Mod90]

The number of fills you'd get would depend on your starting & ending pressure as well as the tank volume in relation to the guns reservoir volume,, and to a lesser degree vary according to the bore diameter and length of your hose. This link should give you a good idea of what to expect, but it doesnt factor for the volume of air in the hose/line.

http://www.calc.sikes.us/2/

If it were me I'd stick with the pump till I could afford a larger volume tank. Pump filling a Disco to 2K psi isnt difficult. And not having to rely on a dive shop for fills adds a little freedom to the equation.

[45Bravo]

The volume of the discovery is 126cc.
The volume of a 90ci paintball tank is about 16.2cu ft.
So if you had the paintball tank filled to 4500psi,
you could theroetically fill the tank just over 29 times from 1000psi to 2000psi.

Mod90 is right, the disco is easy to pump, and doesn't take long.

That being said, only you know your ability, health, and physical fitness.
Pumping isn't for everyone.

I started with a pump, then went to a tank, but I still pump when around the house, and use the tank at the range.

[c_m_shooter]

An 80 cu ft scuba tank is about $200 new and my shop fills for $5.  That is good for between 60 and 80 fills for a discovery depending on the calculator you use.  I haven't been counting the fills from my tank, but have been shooting every weekend for a couple months and haven't had to refill it yet.

[Tgomez82]

Cm shooter are you using co2 or hpa? Thank you all for your help I am sure I could manage a hand pump with no problem I would just rather have a tank to tote around in my day pack that have to fit a pump in there, the area where I shoot ground squirrels is a bit of a hike off the trail so I'm not to crazy off the scuba idea. But if I buy a few 68/3k paintball tanks I can have them filled at my local paintball shop. I am a friend of the owner I used to play on his team in my younger day so he gives a good deal on everything

[rodbuilder]

If you have a friend who will fill for you get a ninja 90/4500 for pcp for around 26 fills. A 68/3000 will only get you about 7 fills.  If he sales ninja he can get a better deal than you ever will find if he will order one.

A discovery is about 136cc for use in http://www.calc.sikes.us/2/

[Bishopsfriend]

Hi folks, I found 2 scuba tanks for sale (80 cuft 200 BAR) for $70.  They have stands, valves, and straps.  My local paint ball shop charges $5 for a fill.  I expect to buy a Discovery PCP in a few weeks and plan to use the tanks for my air source around the house.    I'm located in Aurora IL.  I'll update this post when I have the tanks in hand.  I'll be looking for the fill hardware in the near future.  Moving away from a Gamo Whisper Fusion .177 cal.  Looking for better accuracy and no cocking anymore.
Dave

[45Bravo]

While we are on the paintball subject.
A standard paintball tank output is around the 850psi range.

The change in paintball to hpa has the newer ones outputting at a higher psi, if he is a ninja dealer have him set the tank regulator to 1900-2000.
The discovery may not like a full 2000 psi fill, but a spring change can get the gun filling and shooting where you like/want it. 

And you don't have to worry about overfilling. (Unless the regulator goes south.)

[Tgomez82]

I can't remember what air tanks he carries in store brand wise, but I'm pretty sure he can get anyone I ask for and I will definitely make sure it's one he can have regulated to a higher output