Q:

Leaks in Dragon Slayers

Leaks in Dragon Slayers might also come from the parts in the pictures posted below . If air is audibly leaking from the end of the airtube when you refill the gun and bleed off the air hose thats hooked to the scuba tank or, you come out to shoot your gun and notice that it is empty and you have checked to see if air is leaking from either the breech or coming out of the end of the barrel and it’s not, then it could be also leaking from these parts. See below:

I simply used an old leather belt and wrapped it around this part while in my vise and simply turned the gun with little effort. It was not on that tight nor did they epoxy it on. THANK GOD!! It wasn’t THAT loose either.

Pic of the Refill/End Cap assembly thats on the end of the Dragon Slayer Airtube:

Cavernous Airtube:

Refill/End Cap assembly disassembled:

This part was not the one that was leaking but, the oring was very hard and brittle. It broke as i gently squeezed it. Glad i had a reason to take the gun apart. I simply replaced it with the proper size o-ring and lubed it with Divers Silicon:

Now, this was the part leaking. It had a nice deep groove worn into it from were it sits inside the assembly. Went to my local hardware store and replaced it. If you cannot find the part, then you can simply FLIP it over and use the other good side. I also lubed it up with Divers Silicon. Every o-ring in the assembly was dry and damaged to some degree:

Here is that assembly. The needle like part is 2 pieces. The stem screws into the part in the pic posted above. This assembly is the part that is right under the refill air inlet port. It is the INLET valve for the AIRTUBE. This is the part that lets in the rushing air when you fill up your gun. It also has a spring that helps close it when you bleed off your refill line:

BEFORE you put the assembly all back together and begin to screw it into the airtube…REMEMBER to also check the 2 big o-rings (in the 1st picture at the top of this post) that are on the base of the assembly. Those also keep the airtube from leaking. There are 3 places on this assembly that have orings and either 1 could lead the airtube to leaks. When replacing 1 ORING…………REPLACE EM ALL!!!!!

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Everything seems to be long perioid project at this time, I’ve got so busy time at work/home, but I’ll tell you how it’s rolling.

Tunajussi are you still working on it? If so let us know how it comes out.

I bought it few weeks ago, an filled it once (from scuba tank), I haven’t done no more than five shots before I stripped it down.

It’s propably been laying around importers shop as an advertisement, got no glue how old is it, its older model with that weird “muzzle brake”. Importer(dealer) told me he has shot it only couple of shots.

We do have only five to ten DS in our country, no spares ❗ He (importer) had so much trouble with guns during warranty period, that it was last time he will ever import any Koren airguns.

And now when I’ve seen few Korean airguns, I understand the way he acted. They are suitable guns AFTER some rework. If you have to repair all guns you are sold (for warranty) imaginary profits are gone faster than you can even think about it.
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No I’am between manufacturing a totally new endcap, blocking old endcaps filling indicator hole, trying to get some spares or fix old ones.

WOW!!! that is some serious rust.

How long have you had your gun? How or where do you refill it?

quote Tunajussi:

I got also some leak and as you can see there was “minor” rust inside air tank. Gauges bolt chrome/nickel coating was gone and it didn’t seal, first fill and all leaked out 😥

http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3960.jpg
http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3953.jpg
http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3947.jpg

WOW that’s a bit of rust 😯 It looks like the air source is not that dry?

I got also some leak and as you can see there was “minor” rust inside air tank. Gauges bolt chrome/nickel coating was gone and it didn’t seal, first fill and all leaked out 😥

http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3960.jpg
http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3953.jpg
http://i246.photobucket.com/albums/gg101/Tunajussi/DSCN3947.jpg

save those pics.

Also, check your PM photo22

Tofazfou Thanks for that Info. BRO 😀 As you have seen I have a DS-50 and I really think it’s under powered for a bigbore. I would be happy to see this one shooting over 200fpe with 180 ball’s or 176 bullets that I have at .495 or should I be trying another size?. I still have more testing to do but it seems to low on power and I will Chrony it soon when I get more time and my rig has a Leroy fill setup on it. I have lots to learn with this big bore so I need you 😀

Yeah. But i can’t remember what i talked about the last time i was here. So if this info is repetitious then sorry. But here it goes.

She is now a 45 caliber instead of the original 50. The barrel is now a little over 24″ long instead of the 20″ Factory barrel. It is now at 250 FPE (245 gr .454″ slug at 675+ fps) instead of the stock 140 FPE (175 gr .490 RB at 610 fps). It also shoots various other bad assed 45 cal pure lead slugs hella nicely and it spits out 144 gr .457″ Round Balls at over 810 FPS now. And i can still do more port work to get MORE POWER or i could just install a 28″ or 30″ barrel for more velocity too. But i love her just like she is.

Nice pics/info. Did you ever get the power increased?

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