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Advice titan spring

Discussion in 'Anything Airgun Related' started by Stokie99, Jul 1, 2014.

  1. Stokie99

    Stokie99 Busy Member

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    hi there I have fitted a titan spring in my hw98 and have cut it down about 5 coils over 3 goes it is still over about 13.7 but that isn't the problem, I will cut it down more, 1 coil at a time , whats concerning me is the power is moveing 2ftlb from 13.6 to 11.6 over 9 shots on the chrono is this normal and will it settle down when it cut the spring down more, and it beds in or am I doing something wrong :confused: thanks stokie99
     
    Last edited: Jul 1, 2014
  2. Akita177

    Akita177 The Absolute State of Britian podcast

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    Sounds like it could be some dieseling.
     
  3. SteveO

    SteveO Top Poster

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    Likely the gun is dieseling and the oil is clearing from the compression chamber after a number of shots, don't cut the spring down much more or it will be under powered.

    If it's legal, leave it as it is and run some more pellets through it first.
     
  4. Stokie99

    Stokie99 Busy Member

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    its like 13 13 12 13 11 13 11 12 11 its doin my head in:confused:
     
  5. Mrman

    Mrman Donator

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    Yes it seems to be dieseling. Did you remove the piston at all? And also make sure the sping ends are flat, so you can stand the spring up, without it falling over.
     
  6. Stokie99

    Stokie99 Busy Member

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    hi there yes the piston has bin out and polished the piston seal was like new so that was good, I think I will pull it all apart again and clean the chamber and re assemble before cutting anymore spring or just put a tin through and see if it settles then try again , what do you guys think.:confused:stokie99
    ps the spring ends have been cut and ground down and polished with a dremil stokie99
     
    Last edited: Jul 1, 2014
  7. JD

    JD Donator

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    Which chrono are you using mate ?
     
  8. Mrman

    Mrman Donator

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    If you added any lube on the piston or excess lube on the spring some of this could be causing your problems or when you pulled the piston out it could be possible that some grease or oil was pushed into the cylinder when it was reassembled . Do as you side and let us know.
     
  9. Stokie99

    Stokie99 Busy Member

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    pro chrono
     
  10. JD

    JD Donator

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    Try wiping all the excessive lube off the spring, guides, piston and seal, then clean out the com tube and set the power this way, then relube lighty.
     
    Last edited: Jul 2, 2014
  11. SteveO

    SteveO Top Poster

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    Stokie,

    Have you heated the ends of the spring until glowing red and then crushed the last coil to finish it?

    Don't get any lube on the piston seal, just use some dry slide on the sides of it.
     
  12. Stokie99

    Stokie99 Busy Member

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    hi there ,yes I have collapsed the coil after cutting and finished it with wet and dry 800 and I have used g&n paste on the side of the piston seal and only used dry slide on the inside of the compression tube and buffed it off after it dryed.
     
  13. Stokie99

    Stokie99 Busy Member

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    Ok will do and let you know cheers guys stokie99
     
  14. Stokie99

    Stokie99 Busy Member

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    hi guys I have just finished cleaning out and re lubing my 98 and after the first few shots it settled down to 10.8 to 11.7 over 9 shots which is a vast improvement on what it was before so I will now put a few tins through it and see how it settles down thanks for everyone's input stokie99
     
  15. Mrman

    Mrman Donator

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    Good to hear, well done
     

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