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250Z 250z Regulator rebuild

Ducere Insanus

HAM Plinker
10
40
HAM Points
94.50
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Gonna be tearing down my 250z replacing all the rings and I'd like to do a regulator rebuild. I have reg butter and a decent assortment of O rings. I read where some of you have sanded down the Belleville washers with 1000, 2000 grit then polish them. Is there more details to rebuild or parts I'll need to complete this job?
 
Gonna be tearing down my 250z replacing all the rings and I'd like to do a regulator rebuild. I have reg butter and a decent assortment of O rings. I read where some of you have sanded down the Belleville washers with 1000, 2000 grit then polish them. Is there more details to rebuild or parts I'll need to complete this job?
I am usually the first person to suggest this kind of work, but I don't do it without a reason. Was your gun leaking, or the reg inconsistent? If not, being so new, you really don't have to change all the orings everytime you take it apart. If you are using the oring kit that came with the gun, you are putting the same thing back in anyway. The belleville washer polishing is a good idea, it can't hurt, especially if yours has been inconsistent. The only thing that you really should have are some good plastic picks to remove orings if you do want to reuse them, and there is less chance of scratching the oring channel too. Since you are taking it right down, really clean the barrel. The first time, and usually it's the only time, I clean the barrel like a firearm barrel, a bore brush, solvent, and then I use JB bore paste and then I clean that out. You just want to make sure that all of the cosmoline is out and any machine fretting left behind is gone. After that is all done and I push a pellet down and like the way it feels, I won't do it again, usually, I'll just use pull throughs with ballistol. My .30 Paradigm I do use a brush on every now and then because the hybrids I use are really nasty, they're accurate, but nasty. Most ammo isn't like that and pull throughs work fine, unless your bore is messed up and you will find out if that is the case after you push a few rounds through your barrel. Good luck with it!
 
The regulator has had some creep with drastic swings in conditions however this is my first regulated PCP so I don't really know what's acceptable. Been having issues with my chronograph however a new one is on the way. I also have a spare regulator for what it's worth...also within a few weeks I should have the plenum and a new barrel from Barra.

Atleast pulling the regulator is easy and isn't like other things that require a full disassemble so I may just save it for later. I still need to stone/ polish the hammer and all trigger components then switch over to graphite lube.
 
The regulator has had some creep with drastic swings in conditions however this is my first regulated PCP so I don't really know what's acceptable. Been having issues with my chronograph however a new one is on the way. I also have a spare regulator for what it's worth...also within a few weeks I should have the plenum and a new barrel from Barra.

Atleast pulling the regulator is easy and isn't like other things that require a full disassemble so I may just save it for later. I still need to stone/ polish the hammer and all trigger components then switch over to graphite lube.
Well, if it helps, I never touched my reg and my es is probably 6fps, it's good enough to leave alone. The reg shouldn't swing at all, it should read one pressure until you drop below it and continue going down.

The trigger in mine was very good, it was the safety that screwed up everything.
 
The regulator has had some creep with drastic swings in conditions however this is my first regulated PCP so I don't really know what's acceptable. Been having issues with my chronograph however a new one is on the way. I also have a spare regulator for what it's worth...also within a few weeks I should have the plenum and a new barrel from Barra.

Atleast pulling the regulator is easy and isn't like other things that require a full disassemble so I may just save it for later. I still need to stone/ polish the hammer and all trigger components then switch over to graphite lube.
The regulator will improve as it’s broken in…. HOWEVER, the lube used out of the factory is crap and the cold weather performance should improve dramatically.

It’s easy to do but TAKE A PIC OF THE B-STACK! hahaha that way you don’t have to guess the arrangement. A very very light polish and reg butter will make the gun a bit more “snappy” in my opinion.

When I chrono’d the gun last week with the 34gr I was getting a spread of like 4fps… but lots of duplicate speeds sometimes 3-4 times in a row. The Barra regulator is actually very good with a little extra love.
 
The regulator will improve as it’s broken in…. HOWEVER, the lube used out of the factory is crap and the cold weather performance should improve dramatically.

It’s easy to do but TAKE A PIC OF THE B-STACK! hahaha that way you don’t have to guess the arrangement. A very very light polish and reg butter will make the gun a bit more “snappy” in my opinion.

When I chrono’d the gun last week with the 34gr I was getting a spread of like 4fps… but lots of duplicate speeds sometimes 3-4 times in a row. The Barra regulator is actually very good with a little extra love.
Reg butter from Airgun Shootist works great on all my regulators. It's like thirty bucks and you get a small tin of this stuff and all my airguns perform great! Tom at High Pressure Pneumatics supplies it as well. Keeps the reg more consistent.
 

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