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Thread: slider modification?

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  1. #1
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    slider modification?

    I was thinking of attaching a peace of f 111 to my mesh slider with velcro.
    Making a temp sail slider, has anyone have any problem with this modification?
    A friend told me about it and I wanted to get a second opinion on it.
    thanks.

  2. #2
    web
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    RE: slider modification?

    it would be a real drag if the extra fabric found its way through a slider-grommet during your opening sequence...like drag your slider to a stop at the confluence finger-traps.
    buy a sail slider or, if you gotta be cheap, steal one off a reserve of similar size and aspect ratio to your BASE canopy.

  3. #3
    guest
    Guest

    RE: slider modification?

    why use a sail slider? It has been proven by the norwegians that sail slider's are never needed, unless you plan on opening higher - and what a drag (literally) that would be...

    573

  4. #4
    BASE Forum Guru bps's Avatar
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    RE: slider modification?

    By no means am I an expert in this area, but I've enjoyed using a sail-slider on terminal jumps. My Mojo still opens fast, but it seems to be better staged vs. using a mesh at terminal.

    In my limited experience, my mesh slider just slams down the lines at terminal and the opening is really violent. But the sail slider sits me upright and then rockets down the lines - well staged in my opinion.

    But with respect, I'm not pulling ulra-low on terminal jumps where a mesh slider may be desirable. With my sail at terminal, I'm pulling around 500 feet...

    C-ya,

    Bryan

  5. #5
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    RE: slider modification?

    The biggest problem with this Modification is the potential interaction between the hook Velcro and the lines, The slider has a range of different positions and dynamic stresses during the initial opening stages which can cause the sail material to seperate the fastening velcro thereby exposing it (Velcro/Sail) to the lines in the sliderīs descent possibly causing slider hangup and or line damage.
    Adam and Dennis played with this Idea 10yrs ago and discarded it to the "Sounded good, but impractical" scrapped idea heap...
    The airstream doesnīt always hit the bottomside of the slider, in assymetric openings especially..
    Hope this helps.
    space


  6. #6
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    thanks/one more Q.

    Could I use a mesh slider on a 12/15 sec delay? If so wouldn't this not be a very
    violent opening or could I slow it down by rolling the nose. Or maybe I should just
    go and buy a sail slider:) Id rather not use any elastic bands on the slider. any opinions would help


  7. #7
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    RE: thanks/one more Q.

    yes you can.
    you induce additional stresses in your system by doing so.
    some systems can tolerate the additional stress,
    others can not.

    if you do not elastic band the slider the same way each time you lose yet another opportunity to build consistency into your pack job.

    DIRECT CONTROL OF THE SLIDER IS A GOOD IDEA
    imo.

    cya

    kleggo

  8. #8
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    RE: thanks/one more Q.

    I've taken 15 off a well known cliff in Northen California with a mesh slider, direct trapping, nose fully exposed. I'm still walking around. In fact, I don't think the opening was any harder than a 3 second slider off jump.

    I also know a jumper with more experience than I who regularly rolls his nose on that kind of jump. I prefer to keep mine open to encourage on-heading (pressurization through the cross porting from the center, rather than from the front of each cell), but I haven't really heard anyone knocking nose rolling.

    Note that I did this with a fully BASE specific set of gear. If I was using a skydiving canopy of some kind, I'd probably want to slow the opening down more to reduce stress on the gear.

    Why don't you want to use elastic bands to trap the slider? I've found that this promotes consistency in my openings by helping stage things.

    Anyway, that's my fifty cents worth. Have fun on that big wall ('tis the season!).

    --Tom Aiello

  9. #9
    Yuri
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    Mesh slider at terminal: Norway experience

    Yo !

    For the last 4 years Norway has been a testing ground for terminal BASE. Among other important changes (pin rigs, etc) mesh slider has become an "industry standard" there. This may not apply to some canopies but Fox and Mojo definitely open better, more consistently (and, surprisingly, quite soft) when using mesh. A proper pack job is essential, though. Most people propack, a quick one over the shoulder works fine. Neatness does not affect statistics, however these 2 key moments do:

    1. Make sure you use both direct and indirect slider control! If you freepack, your locking stow must be tight (a double-wrapped large rubber band, usually).

    2. Roll the nose!!! Rolling the outer 3 cells on each side 5..6 times has a tremendous effect on a slider-up opening. Not only does it soften your opening down without a snivel effect of a sail slider - it also greatly improves your on-heading perfomance.

    Using a small (tailgate-style) rubber band on the slider to control your steering lines helps a lot if you propack over the shoulder and don't like line-overs. It doesn't affect the opening much, though.

    Sleeves and other deployment devices have been tested extensively, but most people still freepack.

    Let's see what the next summer brings up... ;-)

    bsbd!

    Yuri.

    http://maxho.com/base



  10. #10
    BASE Forum Guru bps's Avatar
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    RE: thanks/one more Q.

    Just wanted to add my two cents...

    I rubber-band my slider to my left center-cell C line on every slider-up jump. In my opinion, it helps to ensure that your slider stays at the top of the lines until the lines are tensioned and lower surface infaltion begins.

    This positive retention of the slider will reduce your chances of a tension knot because the lines will be under tension before the slider travels down the lines.

    I've also noticed faster openings on low speed slider-up jumps. (I've made 22 mesh slider jumps from 480ft) Since the lines are tensioned before the slider begins to travel, it seems to "rocket" down the lines.

    And I've never found a single negative effect from placing direct control on the slider.

    If anybody has, I'd love to hear about it...

    C-ya,

    Bryan

  11. #11
    BASE Forum Guru bps's Avatar
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    RE: Mesh slider at terminal: Norway experience

    Hi Yuri -

    I can't seem to visualize how you rubber-band your control lines to the slider.

    Is it done "tail-gate style" with a tab that is attached to the slider and then wraps around the control lines?

    Or maybe the mesh is pulled around the lines and then rubbuer-banded?

    I've heard different schools of thought on restricting the control lines during a slider-up deployment - some good and some bad - but I'd like to learn how you do it anyway.

    Thanks!

    Bryan

  12. #12
    Yuri
    Guest

    RE: Mesh slider at terminal: Norway experience

    The rubber band (cut-in-half small one, the same we use for a tailgate) is in the middle of your slider's trailing edge: just like a miniature version of a locking stow on your tailpocket. I take a small bite of my steering lines and double-wrap the rubber band around it.

    This does not affect your openings much, if any - instead it keeps the steering lines from being pulled around anywhere near the nose during those quick over-the-shoulder pack jobs ;-)

    bsbd!

    Yuri.


  13. #13
    BASE Forum Guru bps's Avatar
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    RE: Mesh slider at terminal: Norway experience

    Thanks Yuri!

  14. #14
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    RE: thanks/another Q

    I have a mojo 260 and was i was wondering how fast the opening with a mesh slider with direct control of the slider as opposed to a sail slider with no direct control of the slider.
    ( I'd rather leave the nose exposed for heading unless you all could convince me other wise) My reason for asking is that I might were a camera
    on one or two of my jumps and I just haven't gone terminal with my mojo yet.
    Thanks for all your answers
    James

  15. #15
    Yuri
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    RE: thanks/another Q

    Yo !

    >( I'd rather leave the nose exposed for heading >unless you all could convince me other wise)

    Rolling 3 outer cells on each side and leaving the center cell exposed does improve on-heading perfomance compared to a fully exposed nose.

    bsbd!

    Yuri.


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