• Hi Guest. Welcome to the new forums. All of your posts and personal messages have been migrated. Attachments (i.e. images) and The (Old) Classifieds have been wiped.

    The old forums will be available for a couple of weeks should you wish to grab old images or classifieds listings content. Go Here

    If you have any issues please post about them in the Forum Feedback thread: Go Here

VSR 10 hpa tank mount

Blackbeard01

Members
Joined
Mar 23, 2017
Messages
32
Reaction score
0
So doing a generic vsr hpa build which I have to use the hpa bottles on for site reasons. Question is has anyone seen the bottles secured to the rifle in any fashion? I'm thinking of making up a mount to hold it parallel to the scope maybe? Any thoughts are welcome.

 
I tested attaching the bottles to the scope on my tanaka rifle, never got around to finding a mount just tested it with tape which holds it pretty tight and can then be covered with camo wrap or netting.  It does make the rifle pretty heavy which might not be as big of a deal as the vsr is generally lighter than tanaka rifles.

View attachment 44520

 
My buddy uses a stock pouch and has it slid into this. It’s not a huge tank and takes getting used to, but it works.

 
Attaching to a stock pouch is another option although i don`t think you would fit a hpa bottle into a stock pouch, its really more of another option when using a co2 capsule adaptor even it does not fit well along with the regulator which looks more like the pictures below.  Problem is co2 is just not as good as hpa as least not the 12g capsules anyway.

View attachment 44521

View attachment 44522

 
Tbh, I don't think a stock pouch would do the trick as it's so big. Scope mount is going to be the way forward I think. It's not that bigger issue as I've got access to a pretty good 3D printer as a "work perk". I did find a picture of the set up I'm after but I cant for the life of me find it again. I don't suppose anyone can think of the one I mean? 

 
You can get a very small HPA bottle, about the size of a Tomato Sauce bottle, that fits into the pouch with just the neck and reg sticking out. 

It works, it’s just not particularly pretty, or user friendly IMHO.

 
13ci cylinder :

https://shop.super5ives.com/shop/item/12398

(As an aside, 13ci 3000psi Aluminum cylinders happen to be exempt from hydro testing)
Just wanna throw it out there, as someone who has studied hydraulics and pneumatics and spend a lot of time working with them, if that small one goes off bang either on tour gun, in your rig or under your bed you are going to die, itlllitterly tear you apart and even if it doesn't, the sudden spike in air pressure will probably kill you. Regardless of if its exempt from hydro tests or not I would not compress it with anything that doesn't have an air drier or cooler and I'd replace it every two years minimum. A lot of people get very seriously injured and many have died as a result if poorly maintained pressure vessels, it's really not worth the risk.

 
Just wanna throw it out there, as someone who has studied hydraulics and pneumatics and spend a lot of time working with them, if that small one goes off bang either on tour gun, in your rig or under your bed you are going to die, itlllitterly tear you apart and even if it doesn't, the sudden spike in air pressure will probably kill you. Regardless of if its exempt from hydro tests or not I would not compress it with anything that doesn't have an air drier or cooler and I'd replace it every two years minimum. A lot of people get very seriously injured and many have died as a result if poorly maintained pressure vessels, it's really not worth the risk.
You can die from 8psi of pressure. I work in Compressed air all day long, your point is valid, but you answered your own question.

Poorly maintained pressure vessels, only an idiot would not inspect and respect something that is literally an explosive, or so I’d like to think.

 
You can die from 8psi of pressure. I work in Compressed air all day long, your point is valid, but you answered your own question.

Poorly maintained pressure vessels, only an idiot would not inspect and respect something that is literally an explosive, or so I’d like to think.
The issue is a lot of players don't really understand pressure vessels. They are just like the c02 bottles and green gas so will just hiss a little. They wont burst because they are made of metal. I don't think the average hpa player really understands the danger of pressure vessels as a lot don't really know what they are or what they are capable of. They certainly aren't toys.

 
Just wanna throw it out there, as someone who has studied hydraulics and pneumatics and spend a lot of time working with them, if that small one goes off bang either on tour gun, in your rig or under your bed you are going to die, itlllitterly tear you apart and even if it doesn't, the sudden spike in air pressure will probably kill you. Regardless of if its exempt from hydro tests or not I would not compress it with anything that doesn't have an air drier or cooler and I'd replace it every two years minimum. A lot of people get very seriously injured and many have died as a result if poorly maintained pressure vessels, it's really not worth the risk.
Exemption from hydro testing does not mean the cylinder has not been manufactured to standards which require samples to be tested to destruction.

A Pi marked 3000psi compressed air cylinder will be designed to hold 3000psi (just over 200bar) and to meet that standard must be capable of holding 4500psi (just over 300bar) without failure or expansion beyond specified criteria.

The regulator must be fitted with both high pressure and low pressure burst disks, which act as a safety fuse.

If the pressure exceeds the burst disks designed point of failure then the disk fails and excess pressure is safely released.  If / when the burst disk degrades over time due to repeated pressurisation and depressurisation it will safely fail and release pressure.

It will be a brown pants moment with quite a bang, and a 'loose' cylinder will spin around on the ground.  99% of people will run away.  I've been there, and among those who moved away.

This will not involve a cylinder explosion

A burst disk will fail due to:

1) Excessive pressure

2) End of life

3) Contamination (Dirty air)

Dirty air includes not using a 'breathing standard' compressors, or nipple cover and ending up with dirt on the nipple then blowing it in when filling etc

HPA cylinder threads are also tapered an designed to vent rather than fire the regulator if you manage to unscrew a pressurised regulator.

Older CO2 cylinders did not have the taper and there was the potential to cause the valve to fire off the cylinder.






















View attachment 44575

View attachment 44576

View attachment 44577

View attachment 44578

View attachment 44579

View attachment 44580

View attachment 44581

View attachment 44582

View attachment 44583

View attachment 44584

 
Last edited by a moderator:
Back
Top