"Puff~the~Dragon" <zero08@sprynet.com> writes:

Dear MPN,

What would be the parts list for low pressure on my autococker and what exact parts for low pressure on my 98 autococker would you recomend? Ive read many articles on it they all say it different.  Any other upgrades would you recommend for it?  Its brand new.  e-mail me at zero08@sprynet.com .

thanks
Bryan H.

Dear Bryan,

        Setting up a cocker to work well on low pressure is harder than it sounds.  It takes a lot of tuning and the right parts.  The parts you need will depend on how low you want to go.  I believe that stock 98 cockers can go to about 350-400 psi just by changing the valve spring and lowering the pressure on the vertical regulator (should come standard on a 98 cocker).
        If you want to go lower than that, you will need a new valve and springs for the valve and hammer (and of course the valve tool, to get the valve out).  There are many aftermarket valves around.  The AKA valve works very well but costs about $70.  Bob Long, Bad Boyz Toyz, and Check-It Products also make low pressure valves that cost significantly less ($40-50).  You will also have to have a airsmith open the airchamber behind the valve to give your autococker more gas flow.
        Another item which will help lower the operating pressure of your gun, are low pressure chambers, which replace the center lug on your main block.  AKA has one which looks just like the factory screw, but is drilled out and allows it to store a charge of air, allowing you to lower the pressure.  Check-It products also offers the "Power Chamber" which looks like a long tube which screws in place of the factory screw, and costs about $45 msrp.  Though the low pressure chambers aren't particularly necessary for low pressure, it will lower the working pressure by providing regulated air to the valve.
        Other things you may need is a new bolt.  The AKA lighting bolt really increases airflow, leading to lower pressure operation.  A good barrel to paint fit is also important, so you will need a good set of barrels with different inner diameters to match whatever paint you will be shooting.

All in all, setting up your cocker for low pressure will cost you a lot of money and a lot of tinkering time.

Sean Takeda's Low Pressure BBT Autococker.  For Low pressure, this gun has had the inside (where the vavle goes) opened up by Bad Boyz Toyz.  It also has a AKA s/s Tornado Valve, low pressure springs, and a Check-It Power Chamber installed.  This gun also features a AKA "Lightning" bolt, BOA Chrome plated 10" barrel, PMS 68 cu in HPS, Quick Disconnect, Check-It s/s 3-way, Palmer Reg, and all work done by BBT.  Last tested on the field, this gun shot a consistent 285 FPS at 250 PSI.
 
 

You will need: Valve  $40-70
    Springs  10
    Vavle 50-70
    Valve tool 18
    Air chamber  40-50
    Bolt  50-70
    Barrels  100-200

You may consider keeping the 98 cocker the way it is.  I find that lower pressure does not significantly increase a cocker's performance.

If you believe in low pressure and really feel it's a necessary mod, you may want to send it to an airsmith to do the work.  There are many reputable stores that can do the low pressure mod.  If you want to do it yourself, be sure you have lots of time on your hands and the right parts.  Keep in mind, you won't be getting more effiency out of going to low pressure, this is a big misnomer.  The main benefits of low pressure allows the gun to "operate" at a lower pressure, and saving wear and tear on the gun.  However, the gun actually uses more air than normal being that it will be using more volume.

Check out http://www.akalmp.com for great low pressure set-ups and more info.

Hope this helps.

Steve Maranzana
MPN Columnist & Product Specialist

Sean Takeda
MPN President