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Hammerli Ar20 Won't Fill Past 200bar

Discussion in 'Technical' started by clive walby, Nov 28, 2019.

  1. clive walby

    clive walby Member

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    Looking for a bit of help with my Hammerli ar20.. as above it's stopped filling over 200bar, looking on internet I learned there are 2 regulators on this rifle, and a lot of users don't fill over 200bar anyway. But I would like to fill over 200 occasionally just to keep it up to spec.
    Any thoughts or help appreciated ..
    Clive
     
  2. tillygti6

    tillygti6 Tilly's gun stocks....

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    It sounds like your dive bottle isn't full in all fairness. Or atleast the 200 you are getting is what's left in the bottle?

    Regards filling above 200, I really wouldnt, when the first reg fails (it will eventually) the second will lock up do weird things and you will be in all sorts of trouble.
    Trust me,.mine did it..
     
    pbrown likes this.
  3. TrickyDicky

    TrickyDicky Life in the slow lane

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    Don't remember mine being rated for over 200bar...they dont have two regs but there are two available one rated for 10mt target at 5-6ftlb and one for general at 12ftlb the washer stack is different...as said its more likely to be your bottle.
     
  4. tillygti6

    tillygti6 Tilly's gun stocks....

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    Certainly the earlier ones had twin regs, whether this was omitted from later ones I dont know.
    Regardless, its not wise to fill an early one above 200.
     
  5. TrickyDicky

    TrickyDicky Life in the slow lane

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    I guess if you class the fact that the regulator has two parts that drop the working pressure twice then i suppose it could be classed as two but one part wont work without the other being present...and there is only one set of bellville washers.
     
  6. airtech

    airtech Engaging Member

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    Word of advice if you take it or not is up to you. Charging the AR20 over 200 bar will give your regulator a short life. I can’t tell you how many of these rifles I have had in with reg problems
     
    hmangphilly, binxkeys and Mike.lewis like this.
  7. Thiel

    Thiel Donator

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    all ar20 that i know dont have a quickfill. the cylinder is filled via the adaptor from walther direct to a bottle or compressor
    and your one is not filling above 200bar ? hmmmm what ?
    the last ar20 in my hands did had one regulator but it was the 7,5J version.
     
  8. clive walby

    clive walby Member

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    I think having read the advice, I'll keep it to 200 bar as I don't want to mess it up..I expect a repair to the regulator or worse still replacement, is gonna be tough, and costly !!
    Thanks for the replies everyone..
     
  9. noz

    noz Engaging Member

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    Mine has 2 regs; I fitted the quick fill kit and fill to 300 when the bottle pressure at my club allows!
     
  10. TrickyDicky

    TrickyDicky Life in the slow lane

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    Does you reg look like this? if so its just one reg with two stages the first is not a proper reg as such.

    [​IMG]
     
  11. clive walby

    clive walby Member

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    I've not stripped the rifle yet, so can't say..looking at the Hammerli webpage the diagram looks like yours...
     
  12. noz

    noz Engaging Member

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    It has been a while but I think mine is longer than the one shown
     
  13. Paravet

    Paravet Member

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    Im having a similar issue. But it won't even fill up to the 150 mark. Is there something else i have to do? Tank is new and was just inspected and filled. Still new to it all. Also, the quick detach connectors just let air flow like there's nothing. Are they just bad connectors? Would have been nice if they actually sent the stuff needed to fill the air rifle with it. Had to buy an additional adapter. Thanks for any advice and sorry for mentioning multiple issues.
     
  14. clive walby

    clive walby Member

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    So yours has the quick fill adaptors then..mine is a buddy bottle which I have to unscrew and remove from the rifle to fill, so can't really help mate.
     
  15. TrickyDicky

    TrickyDicky Life in the slow lane

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  16. Paravet

    Paravet Member

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    So I'm not sure how quick detach systems are supposed to work, I would assume they wouldn't let air out while attached to the tank but from what I've seen that's exactly what they do. I can try to post some pictures of the ones I have. Also, I double checked that the tank I had was indeed a 3k psi just incase I had the wrong one but it is rated for 3k. Idk if there's a way to increase how much comes out but ready to learn. Also, don't mind the duct tape on that one, it's so I can tighten it down without damaging it since it was leaking from the threads.
     

    Attached Files:

  17. Septic

    Septic Superbus et Vetera

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    They’ve got two regulators if I remember rightly, with the primary set to drop the 300bar fill pressure to 200bar, before the second drops it from 200bar to 100bar... So I’d guess that the problem is with the fill valve loading up and choking the flow into the cylinder...
    But it is just a guess..
     
  18. hmangphilly

    hmangphilly Keyboard Hero

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  19. hmangphilly

    hmangphilly Keyboard Hero

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    Check your guages.

    If you've got over 150 in your bottle and you are opening the cylinder valve properly , you must be transfering bottle pressure to the cyl .
     
  20. hmangphilly

    hmangphilly Keyboard Hero

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    Hang on a minute

    [​IMG]

    what's this Air venturi gauge attached to ?
    Is it in line from dive bottle to gun cyl?

    It's showing 2000 psi more or less . Thats 140 bar more or less . so that what you're gun cyl is getting
     

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