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Trivial_Trekker

LIne twists

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jump number 32

I was nice and stable when i threw out my pilot chute and as the canopy came out of the d bag i notced one line twist.
As the canopy started filling with air the end cells still were slow to inflate and the canopy began turning around its elf giving me about 5 line twists, by that point i had my hands on the rear risers pulling them apart to try and slow the spinning down. which didnt really help
I found that i i could only start kicking it out once the spinning had stopped

anyway I'm curious to why this happend?
I jumped a hornet 190
I had time to kill and took like 30 mintues to pack it to try and see if i could get a sweet opening. I'm a packer on the weekends so that is a pretty slow pack job for me.
I didnt do any thing fancy like roll the nose etc.

I may have packed it with 2 or 3 twists in the bridle which i didnt clear out as i put int the pilot chute in
[:/]
COUld that have caused it or was it the end cells???

I understand the canopy opening is a very violant process , but shouldnt a sloppy packjob open worse then a neat one??:S



[]DETE

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jump number 32

I was nice and stable when i threw out my pilot chute and as the canopy came out of the d bag i notced one line twist.
As the canopy started filling with air the end cells still were slow to inflate and the canopy began turning around its elf giving me about 5 line twists, by that point i had my hands on the rear risers pulling them apart to try and slow the spinning down. which didnt really help
I found that i i could only start kicking it out once the spinning had stopped

anyway I'm curious to why this happend?
I jumped a hornet 190
I had time to kill and took like 30 mintues to pack it to try and see if i could get a sweet opening. I'm a packer on the weekends so that is a pretty slow pack job for me.
I didnt do any thing fancy like roll the nose etc.

I may have packed it with 2 or 3 twists in the bridle which i didnt clear out as i put int the pilot chute in
[:/]
COUld that have caused it or was it the end cells???

I understand the canopy opening is a very violant process , but shouldnt a sloppy packjob open worse then a neat one??:S




It's usually body position. Twists in the bridle should have no real effect. What do you look at when you pull and while your canopy is inflating? The only thing you can look at that will help you have an on-heading opening is the horizon. Watch the horizon and maintain your heading during opening by shifting your body weight. If you start turning right, then put more weight on the left by "sitting" more on your left.

That's the answer I got a few years ago when I asked the same question, and it resolved my line twist issues. I asked the guy who did the 'Pack Like A Pro' video.. I was expecting him to tell me some packing tricks but he said no, it's usually body position.. you can pack like crap and still get an on-heading opening.

Chris

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yes I usually try and llook at the horizon, and I had many clouds around me that day to reference my heading.

LIke i said, the canopy came out with one twist and then began to turn around its self. Note the end cells werent filled.

Is this a typical line twist situation, ?
Did it have something to do with the end cells not filling in , or was it my body position after i threw out the PC?

I remember having a linetwist situation a while back on my 10 sec delay. I wasnt breifed on turns and i started turning left as i exited the plane and I opened in the turn expecting line twists, whiich i did get but only a few. It was different though, I looked up the canopy inflated and i had about 4 twists, so i cleared them alot easier.
That was in the Manta days.

Just wondering if its possible to get linetwists even with a neat packjob and stable deployment.

Note: Im not in denial, I will pay alot more attention now on when i pitch my pc:D



[]DETE

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Just wondering if its possible to get linetwists even with a neat packjob and stable deployment.



In theory, no. Lol. This is one of my problems, the whole "stable-deployment". When I deploy, I think I'm stable (well, I finish my track, and on heading). However, when I reach to pull, I think I drop a shoulder ever so slightly, and whoosh--line twists.

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Just wondering if its possible to get linetwists even with a neat packjob and stable deployment.



In theory, no.



There are factors outside of a jumper's control that could initiate linetwists... even with a "perfect" packjob and a stable deployment body position.

I won't comment on how much of an influence these other factors [think turbulence] could have [my guess: generally negligible] because I simply don't know. Either way, chaos theory prevails.
I really don't know what I'm talking about.

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It could also be because you are making your last stow too close to the risers.

I can't remember the suggested length of free line you should leave between your last stow and your risers, but I think the "rule of thumb" is your fingertips to your elbow or something like that.

Having said that, it's probably body position, as much as we hate to consider it. :)

Kim
Watch as I attempt, with no slight of hand, to apply logic and reason.

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I used to have line twists all the time and I swore that I was stable when I opened. When I saw my video, I had to change my mind. Now I concentrate real hard on my movement on opening. I have a different rig, a smaller one that is narrower in the shoulder area. This helps a lot.

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I can't remember the suggested length of free line you should leave between your last stow and your risers, but I think the "rule of thumb" is your fingertips to your elbow or something like that.



I believe it's 12-18".

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Having said that, it's probably body position, as much as we hate to consider it. :)



Yup.

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I have heard of that rule of thumb aswell.

I may have stowed leaving abit less than a foot of lines on that particular jump.

Im always scared to leave 18'' of lines sitting in the container, so I usually make one more smaller stow to bring it to about 12''. The thought of a bag lock freaks me out alot...[:/]




I leave at least 18". It's not a problem, as long as you S-fold the extra line into the bottom of the container neatly. Don't try using circles.. they call that the coils-of-death because they cause tension knots... but S-folds work great.

With my CRW canopy I only use 1 stow... right by the canopy. The rest of the line is S-folded into a little pocket. No issues. Also your reserve has most of the line S-folded instead of being stowed. S-folds are reliable.

And yes, even if you do everything right you may still get a line twist or two sometimes (not very often though, with most canopies).

Chris

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