Huben huma reg in huben k1 .25

any huben k1 .25 owners know what huma reg setting the k1 responds well to as far as recharge rate and consistent velocity when shooting 33gr preferably at 920-940fps?

i currently have the reg set for 170bar and want to know if a lower setting can give me tighter velocity and faster recharge rate.

thanks
 
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17 bar seems awful fully slow. I will keep it at least 10% and then try that.
He meant 170b
any huben k1 .25 owners know what huma reg setting the k1 responds well to as far as recharge rate and consistent velocity when shooting 33gr preferably at 920-940fps?

i currently have the reg set for 17bar and want to know if a lower setting can give me tighter velocity and faster recharge rate.

thanks
Not necessarily, it will increase your shot count though just any other gun would when you tune it down. The valve dumps as much air as it needs given reg, hammer, and weight of projectile. What I mean is that the gun won't simply let you shoot a lighter pellet at lighting speeds just because it will shoot a 33gr at 1000fps. It will use the air necessary.

Try 145-150b

With 170b I was able to.shoot 38.5gr at 1000fps
 
Unless perhaps a HuMa is PURPOSE built for that use .... as a typical HuMa is a precision regulator with a SLOW refresh rate of 2-5 seconds.
The HUBEN semi-auto requires near instantaneous refresh speed.

Don't see it as a good match based on what I know of HuMa regulators :oops:
 
Unless perhaps a HuMa is PURPOSE built for that use .... as a typical HuMa is a precision regulator with a SLOW refresh rate of 2-5 seconds.
The HUBEN semi-auto requires near instantaneous refresh speed.

Don't see it as a good match based on what I know of HuMa regulators :oops:
I’m with you in this opinion, Estado humor regulator wouldn’t work. You would actually need to increase the pressure exponentially.
 
Unless perhaps a HuMa is PURPOSE built for that use .... as a typical HuMa is a precision regulator with a SLOW refresh rate of 2-5 seconds.
The HUBEN semi-auto requires near instantaneous refresh speed.

Don't see it as a good match based on what I know of HuMa regulators :oops:
i see. if that were the case, i would prefer the slower refresh rate is below my need for stable velocity
 
Generally, @Motorhead would be right on this, but I bought the Huma reg for mine and it refreshes plenty fast enough for good semi-auto shooting - I practice double and triple taps sometimes with mine and there is no issue or loss of speed. Note that mine is a .22 shooting at about 34 FPE, so it might not be enough for a .25 at 70 FPE.

One thing that Huma does on the regulator for the Huben (at least on the reg they sent me) is they leave out any restriction screw to give a faster refresh rate. It works great, but it does lead to the delrin disc wearing out (leading to some creeping) a bit faster than on my other slower refreshing Huma regulated guns.

I am very happy with it, and it solved the issue I was having - my K1 shoots great at lower pressures down around 100 bar, but the factory regulator is not as stable as the Huma regulator down there. I get less ES with the Huma regulator than I do with the factory one, but I had to give up the external adjustability to get it.

If you order one, I'd definitely order some spare discs for it as you will likely need them eventually. You can turn the disc over and use the other side, but eventually you will probably want to replace the disc.

I wish I could get some of those discs made out of PEEK . . . .
 
When I had my THOMAS FT rifle & had painstakingly made a peek Huma regulator seat disk. What a PITA that was as it required making it from PEEK rod, parting off some thin disks then lapping them on a surface plate using ever decreasing grit wet/dry paper to remove all tooling marks. All done it did work, but as stated what a PITA !!!

Yea leave out the restriction screw can see a faster recovery for sure !! ... tho as stated seal disk life will be a LOT shorter :confused:
 
I would say 150- 170bar. With the Huma you will get faster recovery rate. But Huma reg. don't last long at higher reg. settings.
i’ve tried 170bar down to 150bar. faster refresh rate but lower standard deviation out the window. i’ve since brought the reg down to 120 and am able to achieve single digit SD.
 
i’ve tried 170bar down to 150bar. faster refresh rate but lower standard deviation out the window. i’ve since brought the reg down to 120 and am able to achieve single digit SD.
Ur rifle will likely jam running that low of setting. I would set it at 150-165 and shoot it for awhile to settle in.
 
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Ur rifle will likely jam running that low of setting. I would set it at 150-165 and shoot it for awhile to settle in.
hmm.. what type of jam? pellet in barrel or magazine cycling? i’m currently shooting jsb 33gr .25 between 910-920 at this setting and i’ve had zero issues so far.. i’ve put fps consistency as priority over faster recharge rate.
and what’s a “while”for an in-line huma reg to settle into what?
 
hmm.. what type of jam? pellet in barrel or magazine cycling? i’m currently shooting jsb 33gr .25 between 910-920 at this setting and i’ve had zero issues so far.. i’ve put fps consistency as priority over faster recharge rate.
and what’s a “while”for an in-line huma reg to settle into what?
Usually running a Huben at lower reg. settings will cause the rifle not to function properly.
Time- maybe 500 rounds.
 
Honestly, the susceptibility to jams due to regulated pressure seems to vary from gun to gun. Some, like @Jammin22, have reported that their gun jams when run much below 150 bar and I believe them. I have run mine down at 90 bar for many tins of pellets with absolutely no issue - although I now run it at about 115 bar since it has the Huma regulator in in and can't be easily adjusted, so that more power is available if I want it. I've shot the Zan .219 slugs with no issues at that ~115 bar setting.

Some of the issue may be related to caliber (.25 has more surface area and tends to be heavier) and the use of slugs vs. pellets (energy needed to shoot as well as snugness/drag in the magazine), but there is no getting around the fact that different guns respond differently in this area.
 
I have ran one of my .22 Huben at 90-110 bar with no issues. But, I had it setup to shoot Crossman Ultra mags at 350fps. Power wheel adjusted to reg. pressure. Ran 7000+ rounds thru it with no issues.
But, in .25 cal I would think that it should be 150-165bar. You might be safe running it at at 140 with no issues.
Hubens are picky with reg. pressure, power wheel setting, and fps. Once you find sweet spot they are golden.
I will say this all Hubens are different what works in one may not work in another. Just have to find what it likes.