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Inline vortex airtank backpack

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Inline vortex airtank backpack

Unread postAuthor: origin unknown » Fri May 04, 2007 11:32 pm

I am making an airtank to be worn on my back during an airsoft game for my vortex gun. It is made of 3 pieces of 2" sch40 pvc connected by tees and elbows. The thing will have a regulator and the pieces of 2" pipe will be about 2ft long and I will likely have it pumped up to 180psi and regulated to 90 psi. Will this design hold enough air to empty 2 magazines (about 3000 rounds in my gun) without having to refill?
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Unread postAuthor: keep_it_real » Fri May 04, 2007 11:56 pm

Sorry to be negative but I doubt it. 3000 rounds is about 30 seconds for a vortex. If I recall correctly, Mr. Plow had a 5 lb. co2 tank that lasted 20,000 rounds or something like that. A 5 lb co2 tank holds LOTS of air because it's a liquid.
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Unread postAuthor: homedepotpro » Sat May 05, 2007 12:11 am

do some experimenting with a blow gun and an air compressor to see how long it takes to empty the tank
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Unread postAuthor: Mr.Russ » Sat May 05, 2007 1:29 am

my 5 litre chamber lasts about 10 seconds. this will probably last the same, maybe a bit more.


its hard getting a big enough chamber. Try using 3" instead of 2"
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Unread postAuthor: Mac/pistol man » Sat May 05, 2007 1:25 pm

3" couldn't be compressed very high, unless you used schedule 120! Aha!! You could order some schedule 120 pvc, in like 3" that could be pressurized to roughly 440 psi.
Image
Here is a schedule 120 pressure chart from Harvel pvc.
So, if you want to make a backpack out of pvc, use schedule 80 or 120, not chedule 40. Personally, I would use 120, but it is expensive..
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Unread postAuthor: Thursto » Sat May 05, 2007 8:12 pm

Hey man, if this was me making one out of pipe, i would make mine like this, they are all linked up threw brass niples and pressure rated hose. and each one is about 60cm long 3" wide. the hose at the bottem is the one that leads to your gun.
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Unread postAuthor: frankrede » Sat May 05, 2007 8:16 pm

Mac/pistol man wrote:3" couldn't be compressed very high, unless you used schedule 120! Aha!! You could order some schedule 120 pvc, in like 3" that could be pressurized to roughly 440 psi.
Image
Here is a schedule 120 pressure chart from Harvel pvc.
So, if you want to make a backpack out of pvc, use schedule 80 or 120, not schedule 40. Personally, I would use 120, but it is expensive..

3" sch-40 would be safe up to 150 by my safety standards.
It would hold alot more air than 2".

and wtf?
sch 120 would weigh so much on your back.
40 would be bad enough, especially in a airsoft type game
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Unread postAuthor: Mac/pistol man » Sun May 06, 2007 7:41 am

frankrede wrote:
Mac/pistol man wrote:3" couldn't be compressed very high, unless you used schedule 120! Aha!! You could order some schedule 120 pvc, in like 3" that could be pressurized to roughly 440 psi.
Image
Here is a schedule 120 pressure chart from Harvel pvc.
So, if you want to make a backpack out of pvc, use schedule 80 or 120, not schedule 40. Personally, I would use 120, but it is expensive..

3" sch-40 would be safe up to 150 by my safety standards.
It would hold alot more air than 2".

and wtf?
sch 120 would weigh so much on your back.
40 would be bad enough, especially in a airsoft type game


Are you kidding me? PVC weighs nothing... Expecially if it is above your COG. Like, In real airsoft, one of my friends has a 45 lb vest full of gear... So, PVC would be nothing...
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Unread postAuthor: noname » Sun May 06, 2007 6:15 pm

I've tried it, not in the same setup, but almost the same. I was also using 90 psi, which is what I feel same around, and a little more pipe. It lasts about 2 seconds before dropping below 60 psi.
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Unread postAuthor: origin unknown » Sun May 06, 2007 9:02 pm

I just mounted my 7 gallon air tank with a regulator in a backback and it works great. No need for my 15 sec long burst of air from 3 pieces of 2" pvc pipe.
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Unread postAuthor: Thursto » Sun May 06, 2007 9:32 pm

And how much does a 7 gallon tank and a regulator cost, and how heavy is it?
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Unread postAuthor: origin unknown » Sun May 06, 2007 9:39 pm

You can get a 7 gallon tank for like about $20, and the regulator for about $15. You will also need a backback, hose, coupling, a few brass fittings and a barbed fitting. It weighs about 10-20 lbs, like a backpack full of books.
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Unread postAuthor: Thursto » Sun May 06, 2007 9:41 pm

Oooh ok fair enough, i live in australia, so i probebly can not get acces to one, if anyone in AUS knows where to get one PM me!
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Unread postAuthor: origin unknown » Sun May 06, 2007 9:49 pm

I'll look for one for ya. Does it have to be from a retailer in Australia? Can you order one from the US? shipping would only be like $15.
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Unread postAuthor: jackssmirkingrevenge » Sun May 06, 2007 10:20 pm

with 2 litres of air at 100 psi, I get less than 4 seconds worth of firing from my strafer:

[youtube]http://www.youtube.com/watch?v=0WOA6TMY8lc[/youtube]

How about strapping 6 x 3 litre soda bottles to your back?
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