Umarex THE ZELOS IS AMAZING
- Thread starter OldVet
- Start date
I have really been enjoying the Zelos action. I have three setups I am working on - I have a .25 pellet barrel (19.6" FX ST 14mm OD barrel), .25 Slug barrel (700mm FX Slug liner), and just finished another action with a .30 FX ST 19.6" 14mm OD barrel. I am not using an external plenum, and have gotten each of them into the high 70-mid 80ft/lb range working at 1950-2200psi on the reg. (lower for .25). I am not sure how much more velocity they may offer, as I stopped where they are due to hitting my desired performance. For me, the biggest hindrance to getting a really good tune out of these actions is the monster strong valve/poppet spring. Once I was able to replace that with a lighter spring, I was able to use a lighter hammer spring and less preload to achieve higher velocities with less wasted air. I still have an original full diameter FX Smooth Twist barrel in .22 to fit up.
Last edited:
Upvote 0
" I got it working with the external plenum from eBay shooting JTS 25.39s"
Blackdog,
Got a link for the plenum you have? Your assessment of it?
______________________________________________________________________________
"Looks like they do have a 177, utah just didn't."
6Gun,
I haven't seen a .177 listed by Umarex anywhere. Snopeak through Airgun & Archery Fun lists the M60 (basically the same gun) in .177 though.
Has anyone with the Zelos/M60 in .177 tried the JSB MK3 knockout slugs? Jacespace reports great results hunting with these.
_____________________________________________________________________________
Perle,
Love that handy looking Zelos Shortie you've got.
What's the barrel length and what kind of fps are you getting with it?
Thanks,
Jerry
Blackdog,
Got a link for the plenum you have? Your assessment of it?
______________________________________________________________________________
"Looks like they do have a 177, utah just didn't."
6Gun,
I haven't seen a .177 listed by Umarex anywhere. Snopeak through Airgun & Archery Fun lists the M60 (basically the same gun) in .177 though.
Has anyone with the Zelos/M60 in .177 tried the JSB MK3 knockout slugs? Jacespace reports great results hunting with these.
_____________________________________________________________________________
Perle,
Love that handy looking Zelos Shortie you've got.
What's the barrel length and what kind of fps are you getting with it?
Thanks,
Jerry
Upvote 0
I just ordered a Zelos .25 from Natchez for $499.99 also got $5.00 flat rate shipping, should be here next week
Upvote 0
The Zelos design has been around long enough to have no worries about its performance. The bullpup designs are not a joy to shoot as compared to a standard air rifle but they are easy to manage in close spaces with their much shorter length.
I was impressed with my .22 that puts a 14g pellet through an inch thick piece of rubber with ease at a distance of 60 feet. I do like the 20 round magazines that are standard for the rifle.
I was impressed with my .22 that puts a 14g pellet through an inch thick piece of rubber with ease at a distance of 60 feet. I do like the 20 round magazines that are standard for the rifle.
Upvote 0
I haven't taken off my pressure gauge but typically the port for the pressure gauge is flow Limited for safety it has just a pinhole to vent the pressure to the gauge. If that is the case for the zelos having a plenum installed in that port is not ideal because the flow rate is limited. To get better flow you would have to drill out that hole to a larger size.
Upvote 0
I find the disclaimer on the safe use of the device "interesting." Personally I would never sell such of device because I'm paranoid about product liability. I doubt this disclaimer would hold up in the courts in the USA.
Last edited:
Upvote 0
Not endorsing the plenum discussed here one way or the other, but the through hole in the side of the Zelos where it mounts is threaded m8 x 1, and has a 7mm min. bore diameter. The flow limiting into the gauge is the small hole on the gauge itself.
Upvote 0
I got it just to try something. I had a lot of problems between the plenum and the Huben bottle regulator.Leaks one after another. Finally went back to tube ( I like the looks and grabbing place) with plenum. It did gain 25 fps without changing anything else
Upvote 0
A little plenum is a good thing. A lot of plenum is a great thing. The difference, 125cc plenum on my .25 Condor I get 880FPS with 30gr H&N AT 1750PSI.
The 50cc plenum on the Huben Power MAX-ATH required 2000psi to hit 880fps.
At 2700psi with 125cc it went supersonic.
But the plenum supplied enough air to keep the pellet under acceleration for the length of a 24 inch barrel
Upvote 0