Author Topic: I don't know what to expect?  (Read 703 times)

Nvreloader

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I don't know what to expect?
« on: September 14, 2017, 05:42:27 PM »
Hi Bob

In you opinion, (you are the one with the experience/training in these arena's)  ;), I am still learning the ropes etc.
This is what I am wanting to do, with my QB-79, 22 cal, using dual fuels, set up for summer/winter use etc,
out to 25/50 yds max.

I have a couple of 4 oz bottles (water volume), I want to set up for a small Hpa compact lite hunting rifle etc,
(I believe these are Co2 bottles, 2k psi values), and I want to run Ninja reg Hpa, around the 1200/1500 psi levels,
while testing for the most accurate pellet, after the mods to show the best results,
I have the funds set aside for a Ninja 13ci/3000 bottle, if needed.

I plan on putting on/off valves with psi gages on these bottles, for quick changing etc.
(Keep one filled and 1 on the rifle etc).

What would you expect, your best SWAG, for the results, I realize that every AR is different etc,
I plan on following your $200 Ninja build, for the mods, and hope to add a SSG, to the package,
I am generally asking about the out come......... worth the time/trouble??

What could I expect from this combo, as for performance,
and what Ninja reg would you suggest for these bottles?

I greatly appreciate your thoughts, suggestion or Ideas, good, bad or other wise.

Thank you,
Don


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It is time to restore the American precept, that each individual is accountable for their actions"
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"Speeds fine, but Accuracy is final"

rsterne

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Re: I don't know what to expect?
« Reply #1 on: September 16, 2017, 01:12:16 PM »
If the bottles have the standard 5/8"-18 NF threads, then any Ninja regulator should fit.... You call them 4 oz. bottles, and when bottles are rated using weight, that is usually the weight of CO2 they will hold when filled properly, NOT the weight of water they hold.... If you are talking 4 oz. of water by volume, that is different again.... Bottles should be measured in cc or cu.in.... partly because fluid ounces are different depending on if you are using the American system of units, or the Imperial (British)....

CO2 tanks should not be filled past 1800-2000 psi, even though they are fitted with a 3K burst disc.... With such small tanks, and the limited fill pressure, you will be very limited for shot count.... I would suggest you either use the standard 13 CI tank, which fills to 3000 psi.... or if you really need a smaller one, there is a 7 CI tank available, though not common.... Google is your friend....

Bob
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Nvreloader

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Re: I don't know what to expect?
« Reply #2 on: September 16, 2017, 01:40:07 PM »
Thank Bob

Here is the info on these 4 oz H2o tanks,
http://www.ebay.com/itm/4-ounce-co2-cylinder-with-pin-valve-NEW-Never-Used-no-hydro-required/371981154756?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

What would be a approximation/swag to the number of shots for this tank, if filled to 2000 psi or less,
providing the 79, 22 cal is tuned correctly for Hpa etc, would 20-30 shots be a swag?

I will attempt to find the 7 oz bottles via google etc, I added the 13 ci tank to my 79,
and the balance just does not feel right, slightly muzzle heavy,
reason for the smaller tanks etc.

Sorry for being such a PIB and all the dumb questions, and I understand about the psi for Co2 bottles etc,
really, I am slowly learning this stuff etc, I just don't have all the info to figure this tech stuff out, yet.  ;)

Thank you,
Don
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It is time to restore the American precept, that each individual is accountable for their actions"
Ronald Reagan

"Speeds fine, but Accuracy is final"

rsterne

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Re: I don't know what to expect?
« Reply #3 on: September 16, 2017, 03:46:47 PM »
Pretty sure that is 4 oz. weight of CO2 by the size of it compared to a 9 oz..... That means the tank is roughly 10 CI or 168 cc... @ 1800 psi, with a regulator set to 1100 psi (like my QB79 build) that only give you about 483 std. CI of air available, compared with 1717 CI for a 13 CI bottle at 3000 psi.... That means about 1/4 the shot count I got....

so, yeah, if you regulated to 1100 psi you might get 20 or so shots....

Bob
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Nvreloader

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Re: I don't know what to expect?
« Reply #4 on: September 16, 2017, 04:02:26 PM »
Thanks Bob

While researching here is some other info I came up with looking for 7 oz tanks,
http://www.strikemodels.com/products/tanks-and-regulators/

Would a 850 psi set reg (similar to Co2 setting) change anything for a higher shot count.

Just to add to my confusion,  :o

Tia,
Don

« Last Edit: September 16, 2017, 04:18:12 PM by Nvreloader »
  • Western NV
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"We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker.
It is time to restore the American precept, that each individual is accountable for their actions"
Ronald Reagan

"Speeds fine, but Accuracy is final"

rsterne

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Re: I don't know what to expect?
« Reply #5 on: September 16, 2017, 04:28:31 PM »
If you search for tanks rated in oz. you will end up with CO2 tanks.... I couldn't find the 7 CI tank, but I did find a 10 CI one....

https://www.magfedproshop.com/products/10citank?variant=2591569281

but they appear to be out of stock.... The also list a 9 CI tank....

https://www.magfedproshop.com/products/10citank?variant=2591569281

but again, out of stock.... These are both 3000 psi tanks.... Another 10 CI tank....

https://www.impact-proshop.com/air-tank-103000-no-reg

that one seems to be available, reg. must be purchased separately.... I can't find anything smaller....

Yes, lowering the setpoint pressure to 850 psi will give you more shots, but at less power, of course....

Bob

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Nvreloader

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Re: I don't know what to expect?
« Reply #6 on: September 16, 2017, 08:57:04 PM »
Thanks Bob

Now, I'll do the correct search......... >:(

Tia,
Don
  • Western NV
NRA Life member

"We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker.
It is time to restore the American precept, that each individual is accountable for their actions"
Ronald Reagan

"Speeds fine, but Accuracy is final"