Recent content by Ltomlin

  1. Ltomlin

    Umarex Umarex zelos o ring help

    Mine is a little loose until pressurized, then tightens up. Honestly I have no reason to take the valve on and off, so I put it on once pressurized, screw it on slowly until it gets past the nipple then finish until it stops. Unless something happens that it needs to come off I’ll just keep it...
  2. Ltomlin

    Umarex Notos not Firing

    Got it all back together with new peek poppet today, done in less than 10 minutes, no issues back to work.
  3. Ltomlin

    Umarex Gauge sizes converting to digital

    Happy Saturday Looking to replace the stock gauge on my zelos (receiver, not stock air tube), and also on my Huben Dream valve on my Notos, with Sekhmet digital gauges. Can anyone confirm thread type/sizes for: Huben Dream gauges (2) for Notos Zelos stock gauge on the receiver Thanks in...
  4. Ltomlin

    Umarex Notos not Firing

    I went with peek option, said it’s better under higher pressure and I’m running mine on higher side. Says it may take a few pressurized dry fire cycles to seal up. We shall see, if not I’ll order the Delrin.
  5. Ltomlin

    Umarex Notos not Firing

    Funny that’s EXACTLY what I just did! Can’t be too careful.
  6. Ltomlin

    Umarex Notos not Firing

    I haven't ever dry fired it without air in the cylinder.
  7. Ltomlin

    Umarex Notos not Firing

    Found the issue - poppet is broken in half! Not sure what causes that, maybe all the porting I did? Now I have to search for another one on here.
  8. Ltomlin

    Umarex Notos not Firing

    EDIT ** The air is coming from the breech / barrel when the probe is pulled back. When it’s pushed in it stops hissing. Is that the oring on the opening to the breech? Or something else?
  9. Ltomlin

    Umarex Notos not Firing

    Zeroed my Notos today outside finally ... After 5 shots it went from firing normal with authority to a "plink" sound when I pulled trigger with nothing happening. Got pellet out of breech, shut off air from Huben valve, degassed the plenum, closed bleed screw and reopened pressure from Huben to...
  10. Ltomlin

    Umarex Copper coated H&N vs normal lead in Notos

    Thanks for the input. I hooked it back up to compressor and filled back to 4000 psi, my Huben gauge on the input (fill) side reads exactly 4000 psi as does my compressor gauge. The 1250 psi is on the regulated side. I bled it all down to about 1k psi, hooked compressor back up and ran it until...
  11. Ltomlin

    Umarex Copper coated H&N vs normal lead in Notos

    Hi - good info thanks. And yes, unless my gauge is way off it’s around 1250? Pics of both attached. The valve is ported along with block, plenum and one other spot all drilled out. I assume the 500mm barrel also certainly helps. Hope it’s not that far off of pressure.
  12. Ltomlin

    Umarex Copper coated H&N vs normal lead in Notos

    Tried some new "copper coated" .22 cal H&N 14.66 grain pellets in the NOTOS today just out of curiosity. Put them up against my normal JSB Jumbo Heavy 18.13 and JSB Exact 13.43 grain. Was looking to try something "lead free" or close to it, and these appear to be somewhat so, at least on the...
  13. Ltomlin

    Umarex Umarex zelos o ring help

    50 was about $15
  14. Ltomlin

    Umarex Umarex zelos o ring help

    Got the new 90 durometer Viton orings in today, slightly smaller than standard but very firm. Lubed up and installed on zelos nipple, huben valve went right on while pressurized at around 3k psi, no hissing and no leaking. Seems as though these harder orings are what it needs if you are...
  15. Ltomlin

    Umarex Umarex zelos o ring help

    I have the exact same plenum in a box still took it off. I thought extras came with it … the port on the rifle has this brown oring behind the gauge and these other gold and black types (can’t remember the name) go between the plenum and the piece that goes into the port. The end cap on plenum...