Small HPA tank?

Small HPA tank?

Joined: February 15th, 2007, 2:07 am

September 2nd, 2010, 1:32 pm #1

Is anyone using a small tank like the Benji or others in the 60 cu. in. size? How many fills are you getting per 3K filled tank when filling a discovery to 2K?
Thanks
Gary
Quote
Share

Joined: July 9th, 2001, 12:24 am

September 2nd, 2010, 2:22 pm #2

You've left an important factor out, what pressure do you run the gun to before you fill? I run mine to about 1400, that's what I used to figure.

60 CI tanks at 3000 psi (200 bar) hold 12,000 CI of gas, about seven CF. Plug the 7 into the AH fill calculator:
http://www.airhog.com/tank.htm

Entering 124 cc for the gun tank (what I recall), and I get 13 full fills (and some patials). I have a friend that estimated about that with his.

Good luck.

Doug Owen
Quote
Share

Joined: February 15th, 2007, 2:07 am

September 2nd, 2010, 2:56 pm #3

Thanks Doug, and you are right ,I refill mine at about 1200psi. Trying to get aproximent number of fills for the small tank.
Gary
Quote
Share

Joined: June 26th, 2010, 1:15 am

September 2nd, 2010, 8:10 pm #4

You've left an important factor out, what pressure do you run the gun to before you fill? I run mine to about 1400, that's what I used to figure.

60 CI tanks at 3000 psi (200 bar) hold 12,000 CI of gas, about seven CF. Plug the 7 into the AH fill calculator:
http://www.airhog.com/tank.htm

Entering 124 cc for the gun tank (what I recall), and I get 13 full fills (and some patials). I have a friend that estimated about that with his.

Good luck.

Doug Owen
Hi could you tell me how many cubic feet are in a 90 cubic inch tank? Sorry my math skills are limited
Quote
Share

Joined: July 9th, 2001, 12:24 am

September 3rd, 2010, 12:56 am #5

A 90 CI tank at that same 3000 psi will hold about 10.5 CF, filled to 4500 it will hold 50% more, 17.7 or so.

HTH.

Doug Owen
Quote
Share

Joined: July 9th, 2001, 12:24 am

September 3rd, 2010, 12:56 am #6

Thanks Doug, and you are right ,I refill mine at about 1200psi. Trying to get aproximent number of fills for the small tank.
Gary
Good luck and good shooting.

Doug Owen
Quote
Share