New Huben K1 and the regulator stability disaster

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schoofsbock

schoofsbock

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Dec 26, 2017
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Arrrgh, now I opened a new thread because the other Huben thread is realy to big for giving a good overview.

Yesterday I got a brand new Huben K1. I dont know which version it is, I assume (hope) the last one, as I also dont know how to identify MK 2 or MK4 version or whatever.

Hm, before I`m going for the first shooting, I will check the power and m/s (fps) stability of the gun, I thought. So I watched the very good YT Video explanation from Gregor K. for correct speed setup and I understood.

However, the results from my Chrony are a disaster. I checked also the chrony with another gun (with a cheepy cheap SPA M10 with HUMA Regulator), because I could not believe these unbelievable differences. However, the cheepy cheap M10 was shooting ALL bullets from min. 242 to max. 246 m/s ….

Fact: I started with the Piledriver from H&N and the m/s speed showed me all values from 200 m/s up to 330 m/s. Some times the speed varies for 3-5 shots between 280 and 285 m/s and suddenly it raises for 1 shot to 320 or more m/s … During the whole measurements I don`t turn the speed wheel or the regulator screw.

The Regulator pressure is set to approx. 150 bar and the pressure cyl. is allways filled with 200-250 bar.

Now after 2 tins Piledrivers Im disappointed about the Huben. With these different chrony results its impossible to achieve some accuracy.



Any ideas from your side ?
 
It is possile that the piledrivers are a bit too big for the barrel and are having trouble pushing through. I had the same problem with the copper plated H&N Baracuda power pellets in my Steyr. In fact, there were times the pellet didn't get pushed all the way thorugh the barrel on the first shot!

I'd try a different pellet and see if the inconsistency is still there.
 
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Regulator's have to settle in. After a thousand rounds, do only them begin to worry about a regulator's fps spread. They are always horrible until the break in. Mine (not a Huben) was 50-60 feet per second spread, now after a couple of thousand rounds it is 30-35fps spread. Now, I am begin to think about upgrading a regulator to get below 20fps. That spread is horrible, but make sure you give the Huben a due-process before you jump to any conclusions. 
 
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Dears, I was still NOT shooting on Targets with the K1 (sorry, perhaps I`ve not mentioned clearly in the opening post). Regulator have to settle in ? The SPA M10 is also a complete new gun w/o such problems … However I hope settle in will help me.

As next I will try to use some JSB Jumbo Monster, hope to get some lower min/max fps difference with these pellets.

@Bigalex, similar Problems for several months ? Holy sh... so I`ve to dismantle the whole new gun for checking this stupid spring ? Again holy sh ...

I`m still working and replacing constantly o-rings on my FX Impact. I spend my freetime more for repairing than shooting 

Just read. Raising to 170-180 bar ? Hmm, I assume then would the air consumption also raise ? But thanks, I will try
 
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Gregor K. has set the reg to 100-120 bar and he shows fantastic high and stable fps.

In the meantime I can see that my Huben is raising automatic the reg pressure more and more to the same pressure like in the cylinder. What kind of problem is this ? Oh no, again changing some o-rings on a new gun ?? I hope not.
Click to expand...

the problem of air leakage of the pressure regulator occurs if the rifle is for a while with an empty small reservoir, change the rubber ring 7 × 1 and have a stock of such rings. Now Huben uses a new plastic peek yellow in the regulator instead of black there is no such problem. Maybe if I change the rubber for PU this problem will go away, I will experiment.
http://s.aliexpress.com/jEF3q2ai?fromSns=Копировать
 
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schoofsbock said:
Arrrgh, now I opened a new thread because the other Huben thread is realy to big for giving a good overview.

Yesterday I got a brand new Huben K1. I dont know which version it is, I assume (hope) the last one, as I also dont know how to identify MK 2 or MK4 version or whatever.

Hm, before I`m going for the first shooting, I will check the power and m/s (fps) stability of the gun, I thought. So I watched the very good YT Video explanation from Gregor K. for correct speed setup and I understood.

However, the results from my Chrony are a disaster. I checked also the chrony with another gun (with a cheepy cheap SPA M10 with HUMA Regulator), because I could not believe these unbelievable differences. However, the cheepy cheap M10 was shooting ALL bullets from min. 242 to max. 246 m/s ….

Fact: I started with the Piledriver from H&N and the m/s speed showed me all values from 200 m/s up to 330 m/s. Some times the speed varies for 3-5 shots between 280 and 285 m/s and suddenly it raises for 1 shot to 320 or more m/s … During the whole measurements I don`t turn the speed wheel or the regulator screw.

The Regulator pressure is set to approx. 150 bar and the pressure cyl. is allways filled with 200-250 bar.

Now after 2 tins Piledrivers Im disappointed about the Huben. With these different chrony results its impossible to achieve some accuracy.



Any ideas from your side ?
Click to expand...
One issue I'd like to get some feedback on is that the secondary regulator is creeping up in pressure as though maybe an "O" ring is leaking by. This started to happen after 2 jams in a row with .254 slugs where all air bled off. I moved back to .253 ZANs and they fit and shoot perfectly but now I'm having regulator creep; starts out at 17 and creeps to tube pressure over time. Any ideas or what experience have you have with regulator holding?
 
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