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Bsa ultra hammer spring

Discussion in 'Anything Airgun Related' started by Stevie Darling, Oct 11, 2014.

  1. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

    Messages:
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    Location:
    St. Andrews, Jockland.
    Morning,

    a friend of mine is fixing up a bsa ultra, all in all the rifle is in pretty good nick.

    After a closer inspection after inconsistant crono readings, I found the hammer spring was in 2 peices, no probs just order a new one from Knibbs.

    I fitted the spring and put the adjuster in just enough to get the end cap on. First thing I noticed was cocking the rifle was a lot harder than mine. I loaded up a mag with aa field and done 10 shots, 14.5ftlb!!!

    i compared the spring with my one, the new spring is 7mm longer. I tried it with my spring and produced a nice safe 11.3ftlb

    Have Knibbs sent the wrong spring??

    your thoughts are appreciated:)
     
  2. slipperyeel1

    slipperyeel1 Engaging Member

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    Location:
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    Sounds to me like they have sent you the fac spring....
     
  3. sillygarry

    sillygarry Posting Addict

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    human error maybe send it back
     
  4. dave goodall

    dave goodall Donator

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    Or cut it down to same length as yours heat it up to flatten the end down and sand it flush all hammer springs come longer so ucan fine tune it
     
  5. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Cheers Dave,

    that makes sense.
     

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