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shah269

Another very dumb packing question...

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So I've been trying to clear my head by packing my parachute. It works.
But...well...lately I've noticed that maybe either I'm doing something very wrong or very right.
I'm packing the thing way too tight.....and well the closing loop is just lacking "snatch force".
Dumb question, can you pack too tight?
PS
I'm using the psycho method which I personally feel gives me more material control via being able to pull and fold and keep the lines in tension.
Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay.

The only thing that falls from the sky is birdshit and fools!

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Was it always too loose? Maybe your closing loop is too long. What kind of gear is it? F111 or ZP?


ZP Triathlon. Doesn't happen every time but every now and again when I really lay down and pull tight I'm simply amazed how well the d bag closes and how loose the closing pin is.
I know it's a very n00b question and I'm going to talk to my rigger about it this Sunday but figured I would just ask
Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay.

The only thing that falls from the sky is birdshit and fools!

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Not a stupid question. The only thing stupid would be to jump with a loose closing pin. In my experience the canopy always inflates to the same volume after the d-bag is closed so, no, I don't think you can pack it too tight. Lots of little variables in packing can cause the closing loop to come through the closing flaps easier or harder, but after you take out the pullup cord the closing loop needs to be very snug. So perhaps as was stated earlier, your closing loop needs to be shortened.Very easy to do.

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As I read this, it isn't a packing issue... It is a closing loop issue.

Premature openings can hurt or kill you and others. Be damned sure you have a tight closing loop! I have a friend in a wheelchair from a premature main deployment while sitflying. This is SERIOUS business.

Fix the closing loop!
The choices we make have consequences, for us & for others!

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Doesn't happen every time but every now and again ....




Humidity is a factor in packing. When the humidity is high canopys pack smaller then when the air is dry. Have someone with more experience check the lenght of your closing loop.
Replying to: Re: Stall On Jump Run Emergency Procedure? by billvon

If the plane is unrecoverable then exiting is a very very good idea.

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so how well I filled the corners of the bag


AH HA!
Thank you!
That's it!
Im psycho packing. And perhaps every now and again I'm bunching up the material to close in the center and very thing on the sides!
And thus the corners of the bag are not fully filled and as such the container "feels" empty!
Thank you!
I will speak with my rigger to verify my closing loop length and to verify my packing technique.
Again thank you!
Shah
Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay.

The only thing that falls from the sky is birdshit and fools!

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You'll find, too, that the rig gets easier and easier to close as you figure those kinds of things out, and as you just start to automatically push or pull a little harder, using slightly better leverage.

I'm not a large or incredibly strong person, but was able to fairly easily close an overstuffed rig that someone was showing me (was looking for new-to-me gear when I was getting back into the sport). He'd spent awhile telling me how hard it was to close, but, well, years of rigging made it a whole lot easier.

As long as you're not jumping, just keep packing until you get a fairly consistent tension on the loop, and then get a rigger or packer or someone like that to evaluate if it's tight enough.

Wendy P.
There is nothing more dangerous than breaking a basic safety rule and getting away with it. It removes fear of the consequences and builds false confidence. (tbrown)

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Wendy
Yes thank you will do.
And yes the humidity was kind of high....very odd that higher humidity can have this kind of effect on ZP?
But yes as I'm doing it I'm getting a better feel for the material. Fruthermore I feel 100% more comfortable with the fold/roll of a Psycho pack than I do with the S fold of a Pro pack. And as such I can add more tension on the material.
Again thank you everyone!
Shah
Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay.

The only thing that falls from the sky is birdshit and fools!

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And yes the humidity was kind of high....very odd that higher humidity can have this kind of effect on ZP?



This is going to be your biggest factor. You've been packing during the cold, dry winter months, and the fabric gets very dry and 'fluffy' in that weather. Once the humidity kicks up, the fabric takes on some moisture, and tends to lay down and pack up tighter.

Think about folding a towel. Take one right out of the dryer, and then one you just used to towel off after a shower. The two folded towels will look quite different.

As an aside, some riggers will use a spray bottle to moisten reserves when packing during the winter months. You have to be careful not to use too much water as it could lead to mold after you pack the rig, but it's a trick they use.

Technique is another factor. When you size the 'bundle' that you're going to roll up, try to aim for a bundle that's a touch wider than the bag. if you have to compress it (horizontally) to fit in the bag, you know you're filling the corners and keeping the bundle as 'short' (height-wise) as possible. This way the pack job will fit the container. It's a rectangular shaped space you're trying to fit the canopy into, so try to make a rectangular shaped bundle, and your rig will close up easier and cleaner.

This is another reason to learn to S-fold the canopy. With S-folds you can make a rectangular stack of fabric, when you roll the canopy, it always comes out as a cylindrical shape, which matches neither the bag nor the container.

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This is another reason to learn to S-fold the canopy. With S-folds you can make a rectangular stack of fabric, when you roll the canopy, it always comes out as a cylindrical shape, which matches neither the bag nor the container.

Ah ok! I see what you mean! It packs flatter when it's an S.
When I Psycho pack it stars off rolled but when I put my knees down to grab the D bag it flattens. But yes I see what you mean.
I also now understand the need to pack slightly wider than the D bag.
Thank you
Shah
Life through good thoughts, good words, and good deeds is necessary to ensure happiness and to keep chaos at bay.

The only thing that falls from the sky is birdshit and fools!

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All you newbies wondering how to pack your parachute -- this is how you learn. He's getting good enough to tell the difference between one pack job and the next, how to spread the canopy in to make the container look good and fit right -- all the things that come with practice.

And not using packers is effectively a 20% discount on your jumps.

Wendy P.
There is nothing more dangerous than breaking a basic safety rule and getting away with it. It removes fear of the consequences and builds false confidence. (tbrown)

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I started noticing one day that my container was not as tight as normal. After looking my rig over i figured out that while my closing loop had no damage, as i pull the cord out on the underside of the pin. The closing loop itself had stretch out over time. The actual loop itself had more than doubled in length from all the tension over time, while there were no visible signs of wear.

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I started noticing one day that my container was not as tight as normal. After looking my rig over i figured out that while my closing loop had no damage, as i pull the cord out on the underside of the pin. The closing loop itself had stretch out over time. The actual loop itself had more than doubled in length from all the tension over time, while there were no visible signs of wear.



I find that hard to believe. a closing loop streaching to double in length?? What material is is made of bungee?


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I started noticing one day that my container was not as tight as normal. After looking my rig over i figured out that while my closing loop had no damage, as i pull the cord out on the underside of the pin. The closing loop itself had stretch out over time. The actual loop itself had more than doubled in length from all the tension over time, while there were no visible signs of wear.




The loop stretched not the whole cord. you know the loop is under an inch long, well my loop now was about an inch and a half, almost two inches. which made the container not as tight, something people should watch out for!!! and i just thought my packing was getting that much better
I find that hard to believe. a closing loop streaching to double in length?? What material is is made of bungee?

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The loop stretched not the whole cord.



Normally the entire piece of woven fabric line is known as the closing loop, but you must be talking about the eye in the closing loop. (Which is a loop in a generic sense.)

There's no reason for the eye to stretch out any more than the whole closing loop, only some small percentage after the initial tensioning.

Is the inner part of the finger trapped line not contained by the closing loop's knot, and slowly slipping?

Or is it a slippery spectra closing loop that is slipping a single overhand knot over time?

Something's not right if you are getting that much apparent stretch!

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The loop stretched not the whole cord. you know the loop is under an inch long, well my loop now was about an inch and a half, almost two inches. which made the container not as tight, something people should watch out for!!!



Yeah they should. It sounds like your closing loop wasn't built properly. The inner cord, that makes up the loop itself needs to be fingertrapped all the way down the lenght of the outer cord so it becomes trapped inside the knot at the bottom. If it is, the knot is what secures it from slipping out.

If it isn't, the fingertrap itself will hold it in place when there's tension on the loop, but everytime you grab the loop to open it up and stick a pull-up cord though it, you can pull out another fraction of an inch of the inner cord.

You were on your way to a failure of your closing loop, and if you were lucky it would have happened during packing. You need to ensure that your closing loop is both built properly, and in good condition before every jump, and this includes more than just looking for wear or fraying. Any change in length of the overall loop, or the loop itself should be investigated before the next jump.

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>The closing loop itself had stretch out over time. The actual loop itself
>had more than doubled in length . . .

More likely the knot slipped and/or the fingertrap is starting to come out. Dacron (what most loops are made of) doesn't stretch.

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I started noticing one day that my container was not as tight as normal. After looking my rig over i figured out that while my closing loop had no damage, as i pull the cord out on the underside of the pin. The closing loop itself had stretch out over time. The actual loop itself had more than doubled in length from all the tension over time, while there were no visible signs of wear.



Just FYI, that doesn't mean that the loop won't be damaged, just means it will happen slower. Also, the grommet or washer could have a nick in them that could cut the loop. You could easily overlook a washer cutting into your loop unless you actually take the loop out, take the washer off of it and examine the loop. But since its already out, why not replace it? ;)

Just things to think about, closing loops are CHEAP (even cheaper if you make them yourself).
"I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly
DPH -7, TDS 578, Muff 5153, SCR 14890
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