Mini Sniper (Sniper3) Questions

I have been thinking about doing a mini Sniper and have been looking at yours. I assume that on the Chipley mini pump kit it has a hole for air? I guess you get an adapter for it and then screw in a 12gr. or bottom line? One more thing... does the mini have the smaller air chamber like the early Snipers?
Thanks for your time.

 

my mini was from '96, it was a proteam body that i used and it works BEAUTIFULLY... the chipley kit is built so that the part that screws into the body has air passages drilled through it and a 1/8" NPT hole for a standard cocker ASA adapter or Palmer Direct Stabilizer drilled out the bottom...i currently use it with a Taso ASA adapter and a 12 gram changer...works beautifully... the pump other than that is the same as the other shipley pump kits and has a pump arm correctly cut for the mini body... the air chamber depends on the body... hope this all helped :-D

- Tim Firpo
- FirePro84
- Viper84@jps.net
- www.FIREPRO84.com

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Sorry to bug you, but I noticed you have a Sniper 3 with CCM pump kit.  I recently acquired a minicocker and added the same kit, but I'm having trouble reaching field velocity.  With the "stock" valve I can only get it to 220 fps through a Lapco Bigshot with Draxus medium-bore paint.  The bolt is an ANS quick pull venturi style and as far as I know the hammer is stock.  Running a stabilizer it sweetspotted around 400psi with a red main spring and blue valve spring (Maddman kit, I know it should be Nelson, but it's all I've got).  The velocity adjuster doesn't work since the spring doesn't touch it so it's all up to the springs and regulator.

Sorry for the life story.  I was wondering if I could compare setups and if you had any advice for running it on CO2 or any tips on the combo.  I was thinking maybe a heavier hammer was in order.  I can still lighten the valve spring a bit more, but it currently has a slight leak when the hammer rests on the valve stem so I know the springs aren't set great.

Thanks for any help you can give me, and sorry about the length.

 

Hello,

No bother at all, i write up these tech e-mails for people all the time, hehe.  sorry it took so long to respong...been running errands back and forth to sacramento the past couple days.

The problem you have with not getting up to velocity sounds like s typical spring problem.  Cocker springs need to be balanced, meaning the valve spring needs to be HEAVIER than the main spring...so like a red valve spring and a blue main spring...or a blue valve spring and a yellow main spring (maddmann springs are fine by the way).  If the springs are balanced the opposite way, like you have them, the gun will get bad efficiency because the hammer is holding the bolt open too long, and possible cause velocity issues.  i reccomend starting at the bottom and trying to set it up using the lightest main spring you can with a valve spring thats of at least equal or heavier strength.  The leak when the hammer rests on the valve is from un-balanced springs as well, since the red main spring is pushing too hard on the valve and slightly opens it...and if fixing the springs doesnt fix that it might be a cup-seal (just suggesting other options).  Also, just out of curiousity, what do you mean when you say the spring doesnt touch the velocity adjustor? what kind of adjustor do you have? pics would help a lot actually.

the inline reg should be set fine if it's running 400.  Mini bodies DO have a smaller valve chamber than normal cockers...the chipley kit does help this a little, but generally keep the pressure a bit high, mini bodies dont tend to like real low pressures like some of the hype says.

the venturi bolt you're using does have poor flow, as do most venturi bolts on the market...the highest flow bolt you can get would probably be a AKA LMP lightning bolt (delrin or metal, whatever you like)...or a Shocktech SupaFly, the supafly is a "venturi" design, but it only has 3 holes and they are so freaking big that it doesnt really matter all that much, they are also very smooth.  If you dont want to shell out cash for a custom aftermarket bolt, the stock open face bolt would work just fine as well, you can find them on the tinkers guild or the misc stuff forum on PBN all the time for like $5.

as far as my setup goes, it's a mini pro-team body with removeable feed neck, reverse p-block with a venturi bolt that came with it...only mini bolt i have but it needs to get replaced next time i go to palmers...chipley pump kit, yellow main spring witha blue valve spring, PE side tapped guage...it's set up to run 12 grams right now...but its not liking that very much..,probably because of the lack of valve chamber so its not getting enough volume...i should set it up for my 4-oz.

Anyway, i hope this helped you out a bit to get your sniper up and running, let me know any more peoblems ya got :-)

- Tim Firpo
- FirePro84
- Viper84@jps.net
- www.FirePro84.com