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Huma regulator service interval?
- Thread starter Pea-shooter O.G.
- Start date
I keep an empty tin of pellets this gun likes and put a hash mark on the lid.
I know its near blasphemy, but the Marauder is the only PCP I have. So, remembering maintenance is pretty easy. I want another PCP, but have suffered paralysis from over-analysis
I know its near blasphemy, but the Marauder is the only PCP I have. So, remembering maintenance is pretty easy. I want another PCP, but have suffered paralysis from over-analysis
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What’s the function of the seat in the huma reg? Is that little plastic puede with a cut out?
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.... Regs are so simple in fundamental operation. It is the sealing surface used to seal against the opposing metal raised radial seat having the HP air STOP flowing to the LP side once spool moves under LP pressure.Upvote 0
because the disks diameter is so tight to the bore so it remain concentric & seat is always contacting the same place, air would have a tough time only passing around the outer edges, SO ... a smile is made for the air to pass around it.
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Well, gun back together! Regulator rebuilt and still operating at a Standard Deviation of 2. My inquiry of this topic was started by some inaccuracy issues that were unusual for my gun. Well, I found why the issue. Remembered I opened a new sleeve of .177 JSB Monsters(original). AND, they changed the skirt well design!
that explains it. Loading bolt probe tip larger than the deep/narrow skirt well of the pellet. So now, the loading probe tip isn't pushing squarely into a flat surface on the bottom of the pellet. Thanks JSB. The old style pellet on the left.
that explains it. Loading bolt probe tip larger than the deep/narrow skirt well of the pellet. So now, the loading probe tip isn't pushing squarely into a flat surface on the bottom of the pellet. Thanks JSB. The old style pellet on the left.Upvote 0
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What's the tiny screw for at the top of the Huma regulator, i mean the very tiny screw that's goes into the screw where you set your regulator with?
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@John1966 What I’m saying is that the installation of that screw should not
stop you from turning the reg adjuster. However, my thought is that it may prevent you from turning it so many times that it may completely unscrew from the regulator. Or if you wish to disassemble the reg, the set screw needs to be removed in order to remove the adjuster screw. I may be mistaken, but this is what I think.
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The small grub screw (M3) in the brass adjuster acts as a flow restrictor. During the refill cycle, the air from the reservoir must pass through the tiny gap in the threads, where it then makes its way through the piston and into the plenum. This feature does 2 things. It helps prevent debris from being sucked into the regulator, and reduces the localized heating effect at the end of the piston to extend the life of the two small O-rings (the one on the small end of the piston and the one on the adjuster).
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@John1966 I would listen to @nervoustrig. I was assuming what that screw was for. I’m more than confident that he knows. He’s helped me quite a bit in the past.
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@nervoustrig Thanks for clearing that up. I saw this discussed in another thread and I have questions. I don’t want to derail this thread. I’ll contact you via PM for more details if you don’t mind.
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Maybe the M3 screw varies with applications. My Huma instructions for the FX Royale: "Unscrew the M3 screw after you have placed the regulator into the action. The screw is only to pull the reg out and is not needed for the proper functioning of the regulator".
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Aside from the things Nervoustrig mentioned...the m3 grub screw also helps the reg to function better at higher reservoir pressures.
Mike
Mike
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The little screw acts as a restrictor. Houma says in the instructions provided that you can cut a notch in the screw to allow faster response if needed. If cycling the rifle quickly the plenum may not fully recharge. I see about a ten second delay. The screw also acts as a place to attach a length of lock wire for pulling the regulator for service without having to push all the other components out.
For storage, I did not see that Houma recommended storing above or below reg set pressure, any opinions?
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