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Binary93

Tension knot or something more

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Hi folks,

A friend of mine had a cutaway yesterday (video below).

  1. He didn't untwist the toggles for at least few weekends of jumping (the twists are visible on the video).
  2. During packing, he flakes (pushes material between AB, BC  and CD outside and lines inside) but he doesn't clear stabilizers etc. During the opening, it looks to me as if stabilizer is trying to inflate while there are lines over it.

My question is, do you think the only cause for this is the twisted brake line (leading to a tension knot)? Do you think not clearing stabilizers during packing can also contribute towards this (or something else)?

I expect the answer to be "yeah, tension knot, untwist your brakes" but posting just in case I'm missing something and there's more to be learned.

Thanks!

 

 

 

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Bill Booth likes to remind us that packing a ram-air canopy is basically about straightening out the strings. Once strings are straight, it will want to open.

Failing to clear stabilizers - outside of lines - was your buddy's first mistake.

Yes, twisted steering lines are more likely to create tension knots.

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29 minutes ago, riggerrob said:

Yes, twisted steering lines are more likely to create tension knots.

Thanks for the answer! Is there any other way to create a tension knot (I thought twisted steering lines were the only way)?

 

8 minutes ago, CoolBeans said:

How does one clear the stabilizers?

When you're packing, during/after flaking but before wrapping the canopy into a cocoon, you're supposed to pull the stabilizer material outside and leave the lines inside (in the video below, from 6:15 to ~6:23 for example). If you leave the lines over the material, they can burn the fabric during opening and damage your canopy. Not sure if there are any other possible side-effects.

 

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(edited)
1 hour ago, Westerly said:

Quickly because you have to catch the next load and that cute girl with the pink rig wont be impressed with you if you miss the load.

I think that's a guy actually, long haired guy rolling pink rig. 

Edited by CoolBeans

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(edited)

The easiest way to keep suspension lines neat is applying a bit of tension.Gravity is your friend. PRO -packing helps as long as all the lines are evenly tensioned between your shoulder/hook and the harness.

 

A wise man can learn from even the village idiot.

Edited by riggerrob
add a sentence

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(edited)

Keeping things neat and straight can help, but only to a degree. Anyone who has watched even one single rear facing camera view of a parachute opening knows that once it hits the relative wind, shit goes flying everywhere and that nice art of perfectly executed folds turns into a ball of crap in a nanosecond anyway.

Edited by 20kN
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