2250 hpa ITS DONE!!
I want to convert my 2250 to HPA.
If you go here : http://jdsairman.com/newproducts.html
I was planning on getting this : Bulk Fill to Paintball Adapter = $59.00
I also want to get a air tank from him. I just don’t understand a regulator that well never used one before. I have a basic idea of what they do but I don’t know which PSI to have it set for the output.
http://jdsairman.com/TanksRegs.html
I want a 22cu tank 3000 psi input.. not sure which output setting to select.
Any help would be appreciated.
Thanks,
Matt
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Viewing 14 replies - 1 through 14 (of 14 total)
BNM parts ordered and on the way!
It’s not even a 2400kt anymore. Got a discovery tube cut it down. B&A bulk fill valve. JDS Airman 22cu tank reged to 2000psi. Barrel is reworked trigger is reworked. Everything debured polished internally. The valve ports are enlarged slightly. It’s a one of a kind if you ask me. Just need to get the bnm parts then tune the hell out of it velocity wise. I am thinking keeping the power where it’s at and use heavier pellets. All in time.. keep yall posted.
I built a 2250 XT, and modded it quite a bit. Swapped in an 18 inch barrel, the B&A disco valve, used a Disco hammer spring, an AOA two stage sear to drop the trigger pull with the Disco spring, and started with a standard paintball 13 cu in bottle, which are regulated to around 850 PSI. That’s roughly the same as CO2. The next upgrade was to a 1600 PSI bottle from Expert HPA, at this point, I opened the valve up some more, along with the end cap for the XT valve to increase it’s volume. After the mods, it will sling 14.3 CPHP’s all day at 850-900 FPS for at least 75 + shots before I hit the regulator. Since it was an XT to start with, there was less work anchoring the valve, and no pressurizing of the actual tube. It also made a “power adjuster not usable, so I shimmed the hammer spring. The stock 2250 tube really should not be pressurized over 1600-1800 PSI max, or it could burst. I know some have pushed them higher, but I tend to use this as the rule of thumb. A disco tube can be used safely to 2K, and if you use a standard 2250 tube, make sure the valve front is past the roll stamp on the tube, which is the weak link in the tube structure. If you want some of my notes, or pictures, drop me a PM, I also have a bottle fed 2250 I built, but I keep that one in the 1200 PSI range for 700-750 FPS max.
Hope this is helpful,
Casey
It’s almost done. Getting a BNM multishot breach and shroud setup going for it. Then the long process of tuning it for max accuracy. It shoots 14 grain pellets at 960s now. Regulated too!
Hummm, Now why couldn’t someone use that connector for the bottle on a shortned MRod Tube. Poor mans bottle fed Rapid! 😀
I miss this carbine that I built. I modified a custom GTBJ condor forearm and used a disco tube with a LW .25 barrel. It was shooting 40 fpe and it was one hole accurate at 25 yards all day. Never should have sold this one!
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Looks Great a real sharpshooter.
Deutsch,
That thing looks cool. Kind of like hpa 22xx version of the Accuracy international stock 😎
You will need to get your gun set up first before you decide on a reg (at least I would do it that way). I would want to see what pellets it prefers and at what speeds. If ultimate power is not a main concern I would see what the slowest speeds it can handle before accuracy suffers (groups open up). Once you decide on what speed you will wish to shoot you can decide on what regulated output you will want. All of this will need to be done with a chrony of course. I used to fill to 3000 psi and observe my five shot groups for accuracy. When I found consistency in the groups I would note what number the shots where and figure out what psi they were at. You can do this by figuring out how much psi is used per shot (observe this by measuring start pressure and end pressure and how many shots were fired in-between).
Camilof, not sure if you meant your “valve remained open” as in valve dump (complete dump) or hammer bounce type dump (partial dump)? You surely were experiencing “valve lock” when you had those low fps on higher fill pressures. If you are going to play around with these 22xx’s you should have a variety of hammer springs as well as hammer spring (pre load) adusters….
If you go here : http://jdsairman.com/newproducts.html
I was planning on getting this : Bulk Fill to Paintball Adapter = $59.00
I also want to get a air tank from him. I just don’t understand a regulator that well never used one before. I have a basic idea of what they do but I don’t know which PSI to have it set for the output.
Hello.
Finally, Did you convert your 2250 to hpa??
I tried to do it many times. But i m not happy with my results
First I mod. the airgun. My air gun configuration is:
Crosman 2250XT with a new longer barrel (24″), modified valve (to increase volume), new bolt with a longer probe, and
i use an HPA tank with an modified valve output at 2200 psi…
I fill the tank at 3000 psi, and proceed to make the test with crosman premier pellets 14,3 grains. My first results are worst, because i only can get 350 ft/sec.
I shoot many times,. when pressure down to 1900, the speed begin to increase.
at 1400 psi i get 643 feets per second
at 1250 psi i get 660 ft/sec
at 1000 psi i get 698 ft/sec
under 1000 psi (almost 900 or 800 psi- the scale is not clear) = 585 ft/sec.
I change the standar hammer spring, but i put a very heavy spring, and when i shoot, the valve remains opened.
And my conclusions are:
If you mod the input pressure, you must to change the hammer spring, and valve spring.
On the other hand, with the same airgun and ammo, i get 645 ft/sec with CO2 in a autum day (at 60 ºF).
I want to know how was your customization.
And apologize by my bad english.
Well a good start would be to figure out where it is shooting at now.
A program like chairgun ..is a good start. You can input pellet weight, distance..a lot more and figure fps out.
It really is simple the more air psi power= more fps..the less shots..a 22 tank is not real big. Its a trade off…power for shot count.
If you are shooting at 3000psi now, at 850fps..
A reg at 2000psi is gonna kill your power, but up your shot count will be up and be much more consistent, 2000psi every shot. Its a trade off.
Ask John..JDS..he is a nice guy and knows more about it than most of us. He can give you a good recommendation as to how to proceed
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Its finally done.. go got a thread in the other guns section.