Huben GK1: What Silencer for Backyard Quiet? (or almost)

Mike,

That rapid disassembly is not surprising. In fact, the original write up in which this LDC was developed stated that your warrantee expires, if your GK1 dumps the air tank.

It is like a 5 MPH rated bumper taking the vehicle structure with it, should you crash at 50 MPH.

I trust that the event was interesting, but not harmful. That the plastic bits flew forwards and outwards.

Your picture suggest very good layer to layer adhesion, as the fractures are through the material, not at the layer boundaries.
It was an eye wakening event for sure! Yep the printer was working perfect 100% infill lol.
 
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Using a 3d printed moderator. I used Bambu PA-CF filament for the first time and I am super pleased with the results. Perfect thread profile, no stringing, good surface finish, 10g lighter than print in PETG with same settings. Since the moderator I'm using is not cylindrical it needs to be "clocked" using some sort of spacer in order to line up with the gun when tightened up. I bought some 1/2" barrel shims for $10 delivered. Very handy, easy to justify buying... I have enough shims to do multiple guns.


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I got a LED like the one you have pictured, I also tuned my GKI 25 down to 600FPS, Its much less than mouse fart, Its more like fly fart, I thought I broke my gun so quite,,Wish I could remember who made them.
Mike
 
Download = Valve Dump?

In case someone wonders why mods are not made strong enough to resist a valve dump, mods are designed to handle muzzle pressure (with margin), not breech pressure (airtank at 4500 PSI in the case of a GK1) . To do the latter would require a very heavy wall; and that would make the mod heavy compared to the airgun.
 
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I got a LED like the one you have pictured, I also tuned my GKI 25 down to 600FPS, Its much less than mouse fart, Its more like fly fart, I thought I broke my gun so quite,,Wish I could remember who made them.
Mike
Pretty sure it's a Version 2 or a variation of the Subscriber/Torquemaster mod.
 
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In a few weeks I will have 2 new models to test, that will hopefully replace the current Sumo .177/.22 with something both shorter and lighter -- and molded after the GK1 profile....
@subscriber is my go-to guy when I need customized silence. Teamed up with GTA's TorqueMaster they are a very capable and pleasant task force to work with! 😊

Matthias

@miksatx printed the above mentioned mods for his own use, and sent me the pic below:
Matthias requested a design exactly 4" long, for his .22 GK1, to be mouse fart quiet at 12 FPE.
I can't help if the mice identify as nutria :)

These mods do not have a flat top "sighting rib" for open sight use, but such a version could be made.

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@miksatx printed the above mentioned mods for his own use, and sent me the pic below:
Matthias requested a design exactly 4" long, for his .22 GK1, to be mouse fart quiet at 12 FPE.
I can't help if the mice identify as nutria :)

These mods do not have a flat top "sighting rib" for open sight use, but such a version could be made.

View attachment 504284
I'll like the pattern! I got mine from torquemaster a few days ago. It works well, not as quiet as the Huma mod 30 kevlar, but it work really well for what I need and the overall look and balance is spot on.

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JaceSpace1369

Glad you like it, although yours is a different design to the pic above on this page. I think the version you have is better for higher power. The two in the pic above are intended for lower power. What is the real difference in performance at low, medium and high power? Perhaps someone will let us know :)
 
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JaceSpace1369

Glad you like it, although yours is a different design to the pic above on this page. I think the version you have is better for higher power. The two in the pic above are intended for lower power. What is the real difference in performance at low, medium and high power? Perhaps someone will let us know :)
I know the member.I got this from makes 3 different sizes this one being the intermediate one. It does exceptionally well at low power. For the amount of noise reduction I am looking for I'd probably cap it at 30fpe with an 18gr and 25fpe with a 15gr pellet. Anything higher and I'd switch to the mod 30
 
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I have said this before , but I will repeat myself again. 3D printed moderators do not have adequate strength or dimensional accuracy over time for a moderator. It is not the technology that fails, it is the plastic material being used. I know we'll be hearing all the nay sayers over this statement, but you will never see this kind of incident with a CF tube and machined baffles.
 
I have said this before , but I will repeat myself again. 3D printed moderators do not have adequate strength or dimensional accuracy over time for a moderator. It is not the technology that fails, it is the plastic material being used. I know we'll be hearing all the nay sayers over this statement, but you will never see this kind of incident with a CF tube and machined baffles.
I use a CF tube with a 3d printed PETG baffles inside on a .177 GK1 works great so far. I have some concerns if it does a valve dump. Aways wear eye protection. Does it affect accuracy, not significantly for my skill level or use. Braced on a table at 33 yards with a red dot will do 19 shot 2" groups. So quiet even the shooter wouldn't think an air gun was fired. Will it last forever, no. Is it a concern, no. I can easily print more, if or, when needed.

You can print design that works much better than anything that can be machined easily. I also have an CNC mill and lathe, but don't use it for baffles, since it much more work and wouldn't be as quiet.
 
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I use a CF tube with a 3d printed PETG baffles inside on a .177 GK1 works great so far. I have some concerns if it does a valve dump. Aways wear eye protection. Does it affect accuracy, not significantly for my skill level or use. Braced on a table at 33 yards with a red dot will do 19 shot 2" groups. So quiet even the shooter wouldn't think an air gun was fired. Will it last forever, no. Is it a concern, no. I can easily print more, if or, when needed.

You can print design that works much better than anything that can be machined easily. I also have an CNC mill and lathe, but don't use it for baffles, since it much more work and wouldn't be as quiet.
The moderator I purchased from Subscriber to me is far better looking yet very functional in tame the bark of my GK1 .25. I have shot many thousands of round with it and the pistol is predictable, very accurate, and it looks like it came with pistol unlike a clearly add on moderator. I purchased all three lengths but just use the shorty as it does the job and keeps the length short. Also the cost of all 3 was less than a non 3d printed option.

I do not know how many rounds a 3d version can go before they could? loose accuracy or be fatigued? I would love to know if there are really any factual data on that. To me I doubt a 3d would break but could see that over many tens of thousands of rounds that it should be replaced since you cannot open it up and service it as far as I know? That being said to me especially for the Huben GK the best moderator both for esthetics and taming the bark is the shorty that Subscriber can print for you. Also with the cost so reasonable, just buy 2 or 3 and that would last a crazy long time. I attached a typical grouping shooting 700 rounds at 25 yards where we just kept adding new sticker bullseyes on the one range given target. I am over 5000 rounds with no detectible change in accuracy....

sighting in 25 yards.jpg