Huben Huben GK1 Pistol Owner Bloopers "You Blew It!"

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Ezana4CE

Ezana4CE

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Jan 15, 2021
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I stumbled across this today. This is funny, but informative. Are any of these photos from any AGN members? I wonder how many of these will be sold shortly after jacking them up or getting them back after being repaired. I know I've done it a few times on the K1. Although I haven't experienced failure though. Is it feasible to machine a more durable part made of stronger material that will not snap?

www.newenglandairgun.com

You Blew It!!!

The first thing that you should do after purchasing any air gun, is to read the manual the gun comes with. There you will find proper instruction on how to operate and maintain your gun properly,...
www.newenglandairgun.com
 
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It would be nice to have that part made out of tool steel or titanium like the air tube
 
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MikeVV,

To an engineer such as yourself, it should be evident that we’re not dealing with pure titanium which can be brittle aka wimpy. Rather we are dealing with an alloyed titanium, perhaps grade 9. This is evident by the 5000 psi rating of the huben tube. Although, I doubt the huben engineer chose titanium ALLOY for its tensile strength. It was chosen for its high cycle fatigue resistance, corrosion resistance, and its higher strength to weight ratio compared to steel. The mag lever appears to be made from some sort of cast steel with weak fatigue resistance. So in this case, substituting it with a machined grade 9 titanium lever would give superior fatigue resistance.
 
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JDGriz said:
...or better steel. Or thicker steel.
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@JDGriz I was thinking of steel or aluminum, but I don't know if one or the other may cause an issue with dissimilar metals. I figured that this piece could and should be upgraded on the production end since users were warned against slamming the lever down on the K1s as well. The problem is that the lever has a spring force behind it to where it is very easy to send it slamming down. For what we pay for these air guns I think we deserve better material than the cast iron looking lever so that it can withstand the slamming action that accompanies flipping up this lever to reload or turn the magazine.
 
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weevil said:
Interesting advertisement. I guess folks who don’t want to be called out for making mistakes go to Kelly.
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Agree. Smart aleck service notice IMO. The lever is weak & the pressure on the lever is much more on the pistol compared to the rifle. They can make a joke of it if they wish. I give this ad a thumbs down.
 
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Nutcracker said:
Agree. Smart aleck service notice IMO. The lever is weak & the pressure on the lever is much more on the pistol compared to the rifle. They can make a joke of it if they wish. I give this ad a thumbs down.
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I like the bit that states you should always read the instructions that come with your gun, especially the Huben GK1.

While we’d like to berate you for being clumsy, we admit that it’s fragile.
 
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JDGriz said:
...or better steel. Or thicker steel.
Click to expand...

Sweet vid, I was worried about titanium prior to the test finalizing as I recently used some for my valves pilot stem. Worries abolished!

Nutcracker said:
Agree. Smart aleck service notice IMO. The lever is weak & the pressure on the lever is much more on the pistol compared to the rifle. They can make a joke of it if they wish. I give this ad a thumbs down.
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+1, this among many other reasons is why I'll keep waiting for kinks to be worked out on this puppy! Next up is that spring that breaks at high pressure usage! A lot of violence going on in the action at high pressures, these things should of been thoroughly tested prior to release, but where there is a good amount of market hype pre-release, you often get a premature release with limited testing on the final product. The first batch was released so quick they forgot the adapters for crying out loud.

Parts shouldn't simply snap off your gun from normal use, else they should be more 'idiot-proofed' cause I sure can be an idiot myself!

-Matt
 
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Legionair said:
I’ve let that lever slam down a few times with my K1 bullpup. I’ve also left it up and fired a shot. Shiet happens. That part should be better quality. @TheBeardedGunsmith says he will be machining some out of 7075 aluminum which will be plenty strong for that lever. Also, I saw Rich Dudek aka @Airgun-Revisions has a gk1 now. Rich is a talented airgunsmith and machinist that is also capable of making an aftermarket lever.
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This sounds very promising.
 
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One thing I have been doing instead of a 5000-psi fill, I only fill to 4000. I also fill after I reload pellets. When I was filling to 5000 then loading pellets, I was pushing so hard on the lever I was thinking it could break. To those of you not familiar with this pistol, the higher the fill pressure the more effort it takes to operate the cylinder latch. Even when I get a stronger lever & sounds like someone will make one, I would try to reduce snapping it open or shut.
 
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Nutcracker said:
The replacement white guide let the spring move smoothly. I would not say loose. The original blue one was tight.
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*edit* nevermind I looked back at your post again and saw you did install the new spring with the new bushing. I need to drink some coffee.

FWIW, the huben pistol has a beefier spring than the bullpup which indicates huben did try to compensate for the higher pressures in the gk1. They apparently should’ve done more testing to determine if a thicker spring is needed or a spring made from better metal.
 
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Legionair said:
I looked back at your post and read that you replaced the striker spring twice. Did the second spring ever have the tight fitting guide on it?

I’m asking because if that spring had the tight guide around it the tight guide will compromise the spring causing premature breakage even if you replace the guide with the looser fitting one. Besides that the spring might benefit from being slightly thicker. FWIW, the huben pistol has a beefier spring than the bullpup which indicates huben did try to compensate for the higher pressures in the gk1. They apparently should’ve done more testing though.
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The first spring did not break, it was mangled & the blue guide was stuck to it. The second broke in the middle. As stated, before, the pistol was functioning fine as far as I could tell with the broken springs. Some owners could have a broken spring and not be aware of it. I used some slick grease this time, Will take it apart soon to see how this spring is doing.
 
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Nutcracker said:
The first spring did not break, it was mangled & the blue guide was stuck to it. The second broke in the middle. As stated, before, the pistol was functioning fine as far as I could tell with the broken springs. Some owners could have a broken spring and not be aware of it. I used some slick grease this time, Will take it apart soon to see how this spring is doing.
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Thanks for answering my questions. It sounds like you do a lot more shooting I currently do, so your testing is very appreciated. I’m going to start playing with different spring diameters (same length). I’ll send you some to test.
 
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