Huben Anyone using the Huma GK1 regulator

[h2okenny]

Just curious if anyone is familar with these. I have a .22 GK and am not a big power guy, nor do I shoot slugs. If I could get two full magazines with a nice consistent, low ES shooting around 750 fps (maybe even a bit lower) with 16g pellets I would seriously consider it. I'm supposing that without a plenum it's not going to be very practical except at very low power. I'm also concerned about the regulator refresh rate. And then of course, it's pretty pricey.

 

[longdog]

My observation of the GK1 .25 after thousands of shots is that adding a regulator would do zero good.
I’m sure that is why Huben didn’t and isn’t going to add one to the pistol.
I can get 34 shots at 700fps using 25.4 grain pellets with a spread of 16fps…..why would you want a regulator?
That’s two full mags on one fill.

 

[h2okenny]

Yeah,that's outstanding. Is that with a 350 bar fill? If mine was doing that I'd feel the same way. I'm getting more like 40-50 fps spreads with 16's with a 320 bar fill in the 750 fps range.

 

[wimpanzee]

40-50 fps spread should have a negligible impact at pistol distances.
when not shooting slugs, i did find a 300bar fill provided a more consistent string, than filling to 350bar...with slugs tho, i'll take all that air!

 

[h2okenny]

I agree, it's not a big deal. It's not like I'm unhappy with it. I was just wondering if tighter extreme spreads and longer shot strings were a possibility in the 700-750 fps range. Without a decent sized plenum I didn't think it was likely, and even if it had a plenum then you'd lose more capacity in the air tube which would most likely negate any extra shots. I was just curious if anyone had tried one.

 

[MJMDP]

If I'm not mistaken they made the regulator for the UK market. They have a really low power allowed for pistols (6ft/lb) and with that power level the regulator allows for hundreds of shots with minimal spread with a single fill.
Its pointless for good power levels because there is no space for a plenum.

 

[miksatx]

Have one in my gk1 .177 shooting rws 9.3 supermag 640 or there about. Still work in progress.

 

[h2okenny]

How's your shot count at that speed? Have you tried it at any higher velocities? When you get it set up to your liking I'd definitely like to know how it works out, if you don't mind sharing.

 

[miksatx]

How's your shot count at that speed? Have you tried it at any higher velocities? When you get it set up to your liking I'd definitely like to know how it works out, if you don't mind sharing.

I started a shot count got 26 shots in and my chrony starts acting up. Don't mind sharing at all.

 

[miksatx]

From 330b to 150b little hotter.

 

[h2okenny]

Shot count is good, but 51 fps extreme spread? That's a lot for a regulated gun

 

[miksatx]

Shot count is good, but 51 fps extreme spread? That's a lot for a regulated gun

New reg so maybe it needs to break in or some thing.

 

[weevil]

New reg so maybe it needs to break in or some thing.

Hi Mike,

I’m a little confused. Your fill port is in the plenum rather than at the end of the tube where the Huma gauge is located or are there two fill ports?

 

[miksatx]

Hi Mike,

I’m a little confused. Your fill port is in the plenum rather than at the end of the tube where the Huma gauge is located or are there two fill ports?

Nope just a gauge up front. Huma has it own connector end piece with a reg set in the piece for the air tube.

 

[weevil]

Thanks Mike. I hadn’t seen the Huma and just looked at their page. I was concerned that the filling was behind the reg (so to speak) but I see how it works now. Of course the issue is plenum space. Really needs 1cc per fpe and this hammerless system doesn’t perform well when starved during the shot cycle.

 

[miksatx]

I was having trouble with cycling when I first installed it. Started the reg set at 100 b it would cycle the striker would stick and it would just drain out lol.
So I run into a video by a guy in UK he managed to get his cycling real good at 125b set point on the reg. That's worked great with mine also. Dropped mine back down to 640fps all I need for the back yard.

 

[wimpanzee]

...640fps all I need...

640 ought to be enough for anybody!

 

[weevil]

Yeah, at higher pressure there’s just enough energy left after the shot to operate the mechanics. I wonder why Huma doesn’t include an optional plenum tube as they do for so many other reg conversions. I get that most people don’t want it longer but this is stuck in no man’s land. Well I guess it’s stuck in UK territory. Not casting any aspersions on you, Mike. I appreciate you trying it out and letting us know what it can and can’t do.