APTA: AIR POWERED TREE ACCESS

Discussion in 'Rules and Regs' started by Crazy_Jimmy, Oct 13, 2014.

  1. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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  2. treebing

    treebing Well-Known Member

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    I was thinking about bringing it in to the ring fully charged, then what if it shot off accidentally. It would be time consuming to pump it and set up once in the ring. Maybe not though. You do have to practice proper firearm protocol. you could maim someone with that thing if your not careful!
     
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  3. GregManning

    GregManning Super Moderator Staff Member

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    IMO
    It should NOT be pumped up prior to entering the ring. It does not have a "safety".
    Let's say the operator tripped, fell, and the valve opened.
    Even if the cylinder only had small pieces of debris (sand, dirt, chips, etc) they would be shot out a very high velocity.

    I ran the throw-line event at the TreeStuff Jamboree.
    We did not allow it to be charged before entering the ring.
     
  4. Tom Dunlap

    Tom Dunlap Administrator

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    The Big Shot has been allowed for years. There's no reason that APTA shouldn't be allowed.
     
  5. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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    I have one on the way
     
  6. No_Bivy

    No_Bivy Active Member

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    A quick inflate co2 charge for Mtn bike will do the job
     
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  7. GregManning

    GregManning Super Moderator Staff Member

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    How do you control the pressure ? You might have to play with the cartridge size ?

    With a bicycle pump I think you want a gauge.
    I've seen Nick Bonner use 140 - 160 psig.
     
  8. treebing

    treebing Well-Known Member

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    Wow
     
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  9. bonner1040

    bonner1040 Well-Known Member

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    Can you walk into the ring with a Big Shot, pre loaded and stretched with a prusik? I can pump mine up in under 45 seconds conservatively.
     
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  10. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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    i was thinking of making a safety or a cover for the barrel
     
  11. DSMc

    DSMc Well-Known Member

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    One of the nice things about the APTA is the same thing that everybody complains about, it doesn't have a trigger. The valve handle needs to be opened up in one continuous quick movement for it to develop enough force to launch the throw bag. If you accidently bump the lever partly open, all the air just fizzles out with no oomph. I feel after using one for a couple of years that it is not only more accurate than a bigshot but also safer.
     
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  12. bonner1040

    bonner1040 Well-Known Member

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    Plugging the end of the barrel is a horrible idea. Havent you ever watch Road Runner / Coyote? Or Looney Toons?
     
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  13. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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  14. GregManning

    GregManning Super Moderator Staff Member

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    Just in case ................

    Nick is serious. (His examples are humorous, but the results might not be.)
    Do not plug the end of a charged APTA.

    If accidentally fired, it would have the normal expanding gas energy, PLUS the mass & momentum of the projectile !
     
  15. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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    Im not .
     
    Last edited: Oct 20, 2014
  16. GregManning

    GregManning Super Moderator Staff Member

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    Sometimes I'm a little slow ................... sorry if I missed the initial joke.
     
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  17. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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    I am too bro , its all good
     
  18. treebing

    treebing Well-Known Member

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    You know those lil bike co2 cartridges? Could you fill it with one of those? It would nice to fill it super fast. But you would want to know the pressure.
     
  19. Crazy_Jimmy

    Crazy_Jimmy Well-Known Member

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    Yeah im gonna really try and figure out what heights I can get with what pressures ...
     
  20. bonner1040

    bonner1040 Well-Known Member

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    Thats the way Jimmy.
     
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