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Hw100kt Air Cylinder: Need Replacement?

Discussion in 'Anything Airgun Related' started by exur77, Aug 14, 2019.

  1. exur77

    exur77 Engaging Member

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    When it comes to pcp’s I still have a lot to learn.

    I wonder what I should do regarding my out-dated hw100kt cylinder. It’s build in 2007 and hasn’t had a service since then, neither have I filled it/shot te rifle since owning it.
    Although the rifle is in superb state and the cylinder looks like new except for one little scratch in the paint, I have no clue whether it’s safe to continu using the out-dated cylinder..

    I’m curious to what you all have to say and if anyone here actually uses an out-dated cylinder? (Kt)

    As I’m currently not shooting I won’t invest in a new cylinder until I actually start using the rifle again. But it’s nice to know upfront if I will have to buy a new cylinder when I’m ready to shoot again (might use it for hft in the future).
     
  2. TORNADOS7

    TORNADOS7 Pro Poster

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    My 2001/S410 had its cylinder replaced in 2011 at 10yrs old but I've no idea why that was, might have been damaged...

    There should be a date somewhere that suggests when it should be inspected, pretty sure I saw one on mine but the rifles not here at the moment (at work) so I can't confirm that...

    My suggestion would be to take it to a gunsmiths and have it serviced...

    Think the cylinders are a separate item on these (as in, you can unscrew it) aren't they ?...
     
    exur77 likes this.
  3. hamza

    hamza Posting Addict

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    IIRC HW cylinders have a 10year service life after which they have to be replaced. This should be stamped/ printed on the cylinder though.

    I believe you can send it back to HW or HC for inspection.
     
    exur77 and Peter Norris like this.
  4. Simok

    Simok Engaging Member

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    I am in the same situation, posted a similar thread a while back. I will be getting a new HW cylinder next month. Expensive option I know but personally prefer original manufacturer with regards to my safety and others around me when using it.
     
    exur77 and Peter Norris like this.
  5. Peter Norris

    Peter Norris Posting Addict

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    The cylinder would need to be inspected by Non-destructive Examination as the possible mode of failure would be inter-granular, therefore not visible to the naked eye. Not economic to carry out on an expired cylinder.
    A German cylinder will have been properly designed, therefore should be changed when the marked Design Life has expired.
    Just another item to add to the "cost of ownership" of a PCP :)
    Peter.
     
    exur77 likes this.
  6. exur77

    exur77 Engaging Member

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    Mine expired in 2017 as noted on the cylinder.

    I guess I’ll replace it then as inspection will probably be very expensive, nor do I have a gunsmith nearby to have it inspected.
     
  7. PBaz Barrett

    PBaz Barrett 'I love slinging lead me'..

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    Made me just look at mine!.. Seemed to have owned it years.. 2014/07 so alright for another 5 years :thumb:
     
  8. HW100Tuning

    HW100Tuning Straight Pride

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    I know a place who re-tests them for approx £50
     
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  9. themadspread

    themadspread Donator

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    mines a 2007 specimen and I shoot thousands of rats with it every winter and use it a bit through the summer as well.its never been tested
     
    exur77 and Air arms boy like this.
  10. Jonkem

    Jonkem Posting Addict

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    The cylinder can be re-certified by weihrauch for a 2nd 10 year period but only 1 time so a maximum manufacturers lifespan of 20 years.

    Hopefully Steve will tell us where to send them for testing as £50 for 10 years is better than a new one!
     
    exur77 likes this.
  11. HW100Tuning

    HW100Tuning Straight Pride

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    Mmm just thinking about it... as you need a 1/4 bsp connection and ends to test. Most people won't have access to these or be able to fabricate some. I was considering making some ends and putting them up for forum members to "borrow".
     
  12. exur77

    exur77 Engaging Member

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    I’m located in BE but I wouldn’t mind sending it to the UK if it’s only £50.

    We are all waiting now for a reference! Haha
     
  13. Jonkem

    Jonkem Posting Addict

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    Sounds like a fantastic gesture :up:
     
    exur77 likes this.
  14. exur77

    exur77 Engaging Member

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    Any idea what it would cost by HW?
     
  15. Air arms boy

    Air arms boy Wear sunscreen!

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    What does the Re certification process involve?

    fill it to 750bar and if it doesn’t blow up good to go ? Lol
     
    exur77 likes this.
  16. exur77

    exur77 Engaging Member

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    So you’re saying that it keeps up very well without any testing for already ~3 years after being out of date? As mines a 2007 specimen I’m curious to know if I can keep using it for a few more years without testing as it seems in such a good condition. (But as said, can’t judge it by naked eye)
     
  17. HW100Tuning

    HW100Tuning Straight Pride

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    I guess that's the question... probably a bad idea to get involved to be honest. :down:
     
  18. Jonkem

    Jonkem Posting Addict

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    Never enquired but expect it would have to go via HC. I think there was a post a while back about this, not sure if anyone quoted a cost.
     
  19. Air arms boy

    Air arms boy Wear sunscreen!

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    it’s like most things in life I guess it’s just ass covering... oh and raises good money too.:confused:

    if you look after your things and change the o-rings periodically they will probably out last you...
     
    PBaz Barrett and exur77 like this.
  20. Simok

    Simok Engaging Member

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    When I exclaimed my shock at how much a new HW cylinder was going to cost me a reply was put on the thread along the lines of “yes but how much will a funeral cost”.
    Hence I am getting a new one in a couple of weeks as that did make me realise it’s not worth the risk however small. I don’t want an aftermarket one for my own similar reason. Each to their own etc.
     

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