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Preload good or bad?

Discussion in 'Anything Airgun Related' started by render87, Jun 7, 2014.

  1. render87

    render87 Busy Member

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    sorry guys if this is a daft or a over asked question but do preload washers add recoil as mine has 6 in. Its putting 11.2 ftlb which is fine but really harsh recoil
     
  2. JD

    JD Donator

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    Try adding the pre load from the rear spring guide end.

    Which rifle, spring and guides are you using ?
     
  3. engraver

    engraver Keyboard Hero

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    He may mean he has put the washers at the back end.

    If so, its because in effect your squeezing your spring to its compressed state, much quicker, therefore there are a number of things you could do, you could look at changing your piston seal on transfer port seal for a better fitting more efficient one, and see if it makes more power without the preload.

    I remember venom quoting some of their guns could be cocking with one finger, and still make full power easily, and having shot a mates lazaglide hw80 its true, one finger and it pushes the pellets out at very close to the limit, and the firing cycle is glass smooth.

    So a harsh firing gun is obviously over sprung and obviously not as efficient as it could be, try stripping it and starting from scratch, from the piston seal backwards.

    Sounds to me like your spring may have past its best, I would try another spring.
     
    Last edited: Jun 7, 2014
  4. render87

    render87 Busy Member

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    the washers are on the rear guide have been since new
     
  5. Nickg

    Nickg Busy Member

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    Most people set the spring a little on the low side when fitting, to stay legal, they can creep up as the gun beds in , however if they do not a bit of pre load can be added to bring them up, better than buying new spring, also if the piston is bouncing pre load can control this
     
  6. Akita177

    Akita177 The Absolute State of Britian podcast

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    How thick are the washers 2mm?
     
  7. render87

    render87 Busy Member

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    i dont know mate there the standard air arms ones what ever they are
     
  8. RTX

    RTX Engaging Member

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    I'd agree you have an ineffecient spring if you have 6 pre load washers in a tx as standard. I recently stripped a tx200 rifle in .177 to replace the steel tophat and spring guide with delrin parts and found no pre load washers as standard. Is the rifle second hand? ie is it possible someone else has stripped it and had a play?
     
  9. keithy

    keithy Keyboard Hero

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    Sounds like your spring is too powerful, speaking from experience if you run a spring with virtualy nil recoil it tends to vibrate and ruin your sight thro the scope on firing.:)
     
  10. render87

    render87 Busy Member

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    its had them in since new now i dont know what to do i was going to get one of tinbums kits but i think i may need a new spring so tinbum with new spring or ww kit?
     

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