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S200 low power?!

Discussion in 'Anything Airgun Related' started by Thom_hardy, May 30, 2015.

  1. Thom_hardy

    Thom_hardy Engaging Member

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    Location:
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    Took my s200 and another rifle just to be checked as I do once a month just to be on the cautious side and have a significant drop in power since the last time I had it chrono'd

    Was firing at 10.9 with Accupels but after yesterday it's not firing at 9.1!?!

    I don't and never have proclaimed to know much about the internals of rifles, and I'm learning and happy to learn!

    Just want some advice to start trouble shooting! It's a mk3

    Thanks in advance
    Thom
     
    Last edited: May 30, 2015
  2. Thom_hardy

    Thom_hardy Engaging Member

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    Apologies for talking about upping power! Thought it was acceptable if it was purely to maintain it sub 12!

    Mods delete thread if necessary!
     
  3. bhodge

    bhodge Posting Addict

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    First step, check the tiny 'O' ring on the pellet probe....
    I reckon you'll find it's not there.
     
  4. Thom_hardy

    Thom_hardy Engaging Member

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    That simple?! Will find out the size and rib it from work!!

    Thanks mate!
     
  5. Speed

    Speed Busy Member

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    over filling it could cause a power drop
     
  6. Thom_hardy

    Thom_hardy Engaging Member

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    Never been overfilled! I'm stupid but not that stupid! Never fill it past 180 anyway!
     
  7. Monster

    Monster Donator

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    If you're using a Combro, check the batteries. Mine reads low if the batteries are low.
     
  8. timmytree

    timmytree Very Active

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    Do you know where the sweet spot is on your rifle? My S200 runs consistently at 11.2 ftlb between 155 bar and 100 bar. If I fill it to over160 bar the power drops off drastically.
     
  9. Thom_hardy

    Thom_hardy Engaging Member

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    165/170 for me! And I get about 45 shots at that! I borrowed a chrono a few weeks back when it was at 10.9 and did a 50 shot string It drops off at around 110 though!
     
  10. bhodge

    bhodge Posting Addict

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    When you get your gun sorted it would be nice to know exactly what the cause was.
    It's always good to have a resolution / closure to members questions. It might help others with the same issue in the future.
    Good luck with it.
    bhodge.
     
  11. Tatts

    Tatts Posting Addict

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    Definitely start with replacing the pellet probe o ring, mine split and it dropped to 6fpe
     
  12. 32:1

    32:1 Theoben user

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    Good call, that little Oring can wear quickly if not lubed once and a while, that was the reason our s200 lost power, you can check by dry firing and feeling for a small puff of air from loading port, and you may even hear it 'pop'. Once new seal is fitted its quite noticeable how much quieter it is to shoot..
     
  13. cloverleaf

    cloverleaf Super Moderator Staff Member Mod/Admin

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    Does it have the 10 shot mag fitted? If so the probe O-ring is the prime culprit - if the mag isn't set up properly it shafts the probe O-ring is a very short space of time. Set up the mag, replace the O-ring and keep it all liberally oiled to prevent the situation re-occuring in future ;)
     
  14. Thom_hardy

    Thom_hardy Engaging Member

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    Thank you gents! I will get on it! Will rob the stores at work! I'm sure we'll have one considering each engine has over 380 of them fitted!
     
  15. Thom_hardy

    Thom_hardy Engaging Member

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    Just to let you guys know as requested I have changed the pellet probe rubber, it looked in ok condition but changed it anyway and it made a slight difference of .8 ftlb which was better than nothing!! Changed other seals at the same time cleaned and lubed up and did something else I can't discuss here (to do with power not lubing up!)

    And happy to say I'm at a more reasonable 11.4 ftlb with AA Diablo's

    Thanks for all the advice!

    Atb
    Thom
     
  16. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Glad it's sorted:up:
     
  17. Tatts

    Tatts Posting Addict

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    Glad you got it sorted but keep an eye on it, the sudden drop of power may down to a leak so just adjusting the power could be hiding this for now.
     
  18. timmytree

    timmytree Very Active

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    It could also seal itself over time and go over power. Another good reason for having a chrono and using it regularly.
     
  19. Thom_hardy

    Thom_hardy Engaging Member

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    I borrowed the chrono off a friend but will have to give it back tomorrow! So will need to find another! Don't fancy forking out £100

    But needs must I suppose!
     
  20. Tatts

    Tatts Posting Addict

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    Buy a combro, alignment tool and a Velcro strap. My pro chrono never gets used anymore as I can't be bothered setting it up. I keep a spare hw mod with the combro permanently attached :up:
     

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