 |  | | | |  | |  |  | New choice for HPA and Bulk Co2 for 22xx Crosmans |  | |  |  | |
 Posted: Thu Oct 09, 2008 8:48 pm |
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| yourdaddyjoe |
| Supporting Member |
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| Joined: 26 May 2008 |
| Posts: 4027 |
| Location: Tatorville, USA |
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Forget the Dummy! I made something NEW!
I just could not bring myself to drilling a hole in my new 2250B...
&
I have a friend in Colorado who is doing an HPA conversion for hunting.
With HPA you need a fast acting reservoir since you are dealing with High pressure air and volume... So I came up with this little doohickey thing a ma jig...
Some idiots are pressurizing their gas tubes to 1400 psi which is just a grenade ready to go off…
It’s made from 8”’s x ¾” solid brass bar bored out for the chamber, leaving a nice thick wall. It replaces the piercing section of the valve and just sticks out of the gas tube of a 2250 1” for the fitting. My 22xx ASA adapters have a 1800 psi burst disc, just in case there is a problem.
Perfect! Now she has the air capacity, immediately when the valve opens and safe too.
It makes for a nice little expansion chamber for Bulk Co2 and I did not have to drill a hole in the gas tube and use the dummy….
Plese excuse the grammer... my head is still foggy from the flu... |
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| Posted: Thu Oct 09, 2008 11:29 pm |
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| Jaxom |
| Senior Member |
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| Joined: 06 Aug 2008 |
| Posts: 927 |
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Ya know joe, after some of the conversations we've had about the mod I was looking to do, I was starting to think about skipping Co2 all together. And I was actually going to ask you if you thought any of the 22xx series could handle the higher psi's. This solves that all!
Do you think this would work with a bulk version of the Boss valve? Since that doesn't have a piercing section?
Just curious, have you chrono tested your rig yet? I'd be curious to see what ratings you're getting! That really REALLY looks like a spiffy set-up.
Great job! |
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| Posted: Fri Oct 10, 2008 1:14 am |
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| kanyon |
| Silver Status Member |
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| Joined: 09 Aug 2008 |
| Posts: 1582 |
| Location: New Zealand |
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Hi..What is a safe psi when converted to air from Co2.
I have a 1760 that would be good to change to air. |
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| Posted: Fri Oct 10, 2008 7:01 am |
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| yourdaddyjoe |
| Supporting Member |
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| Joined: 26 May 2008 |
| Posts: 4027 |
| Location: Tatorville, USA |
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Cool thing Jax, is you can start out with a set up like this and move up to HPA. I am not among the Rich Folks… So I am taking it one step at a time…
Sorry... I do not own a crony... YET! I have to justify it to the Boss... The one that wares the panties...
No need for the boss valve. This is a total valve replacement.
You have more than 8x the volume stored in the reservoir for quick & consistent burst.
This is not a "PCP" (Pre Charged Pneumatic) Tank...
It must be used with an external tank for HPA or Co2.
This is the first proto.
I have a revision on the drawing board all ready.
No cut away till perfect the Monster Valve.
There is some internal goodies that I am working on for better fluid dynamics...
Kanyon,
My beta tester in CO wants a working psi of 1000 - 1400 with the external tank. Safely obtainable...
A 1760/2260 would require a longer reservoir... It is on the drawing board, but I must perfect the 2250 set up first...
BTW… I have 24” .177 and .22 13xx & 22xx barrels on the way.
I am offering a cut down, Re-crown and Re-blued service now.
$45 to the custom length of your choice.
I am looking at an Anodizing & Nickel Plating service too… |
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| Posted: Fri Oct 10, 2008 5:59 pm |
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| kanyon |
| Silver Status Member |
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| Joined: 09 Aug 2008 |
| Posts: 1582 |
| Location: New Zealand |
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Hi..thanks A 1760 with bulk air feed would be great, But I must say it has picked up quite a few FPS as its comeing in to summer and the weather is warmer. Hopeing on a hot day 25/30deg celius and PBAs it may get 850fps if thats the case I will try it on a few bunnys.
I read somewhere here that N2 being thiner could give more FPS.
Well it just so happens the laser at work uses N2 as a sheilding gas.
later to day me and the Evanix are going for a drive to the work shop.
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Career Infinity PCP .22
Webley Patriot .25
Hatsan mod 75 .22
Hatsan mod 99 .177 (Quattro & SAS)
Kral underlever .177
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