Problems with no-sew finger trap.

[rtroup 1]

I am having a problem with the no sew finger trap. Right below the point where you flip the line threw it’s self to lock the finger trap in place the inserted part of the line is working its way out. It’s actually spreading the outside line and working it’s way out down the line. This has happened to me more than once. I have been using 1000lb micro line and have not used any other line so I am not sure if it will happen with any other line. I recreated the problem and attached a photo of it. Has anyone experienced this and come up with any solutions to this?

(insert philosophical quote here)

[freefalle 0]

Ive seen that happen a few times to the line used on the packing tools. Im not sure if there is a fix to it other than replacing the line.

[rigging65 0]

The only time I've seen this be a problem is when there wasn't a long enough bitter-end trapped in to line begin with. Not saying it can't happen in other circumstances though....

"...and once you had tasted flight, you will walk the earth with your eyes turned skyward.
For there you have been, and there you long to return..."

[YonatanRan 0]

I've had this happen and I've seen this happen on my velocity and stiletto canopy, on the steering line...the end that finger trapped in just starts to come out through the line itself...kinda like what the picture shows, the difference is that that when it happened to me the actual end of the finger trapped part is what came out....The solution I found and was told about when asking about this(I asked many a rigger/master rigger) and it works for a while is to cut the excess that sticking out and than running your hand over the line to push the excess back in(or what left of it...0
In some cases this seemed to do the trick, in others it came back...so....

I've had it on spectre line and on vectran....and Ive seen it on dacron so I guess it happens to all....



Friends help you move, real friends help you move bodies

[rtroup 1]

So what would you say is long enough? I leave about 5 inches inside the line.

(insert philosophical quote here)

[rtroup 1]

What your talking about is the complete opposite of what im talking about. I have had what your talking about happen to me all the time. But I just pull the line back inside instead of cutting it because it will keep coming out and you can only cut it so many times. Cutting the line with the problem I am talking about is not an option. You would be cutting off all the line that’s inserted.

(insert philosophical quote here)

[FrogNog 1]

It looks like the second fingertrap is very close to the first one. The spec I read said the second fingertrap should be .5" below the first one. (And the running end tucked inside should be at least 2.5" or 3" - not sure which that was). Perhaps having the second fingertrap too close tends to tug the excess line out?

-=-=-=-=-
Pull.

[FrogNog 1]

Quote

bitter-end

A bitter end is the end of a 180 curve in a line. ("Bitter" coming from "bight", which we are familiar with from making line stows during packing.) The end of the line where it goes straightish away from a knot and eventually ends would be called a "running end", I believe.

Yeah, I know, really important details.

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Pull.

[AndyMan 7]

Where is this line used?

Shouldn't most fingertraps either be sewn (like line attachment points) , or have a knot to keep it in place (like toggles or closing loops)?

_Am

__

You put the fun in "funnel" - craichead.

[PhreeZone 20]

Look on Jumpshacks website. They show how to do a new sew fingertrap that is stronger then a sewn one and they use it on their line attachment points.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[FrogNog 1]

Quote

or have a knot to keep it in place (like toggles or closing loops)?

The knot on a closing loop serves the additional purpose of anchoring the loop to the container in at least the pull direction. It would be hard to keep the container closed for long without it.

-=-=-=-=-
Pull.

[billvon 2,991]

I actually have a problem with quite a few fingertrapped lines working themselves out eventually in any application where there's slack on the system a lot (mainly brake lines below the stow.) Never tried the no-sew technique on toggles, but on both knotted and sewn toggle loops I've had line come out.

[rtroup 1]

The picture i posted is one i made laying in bed just for this post. The ones i made for canopies are within the specifications.

(insert philosophical quote here)

[FrogNog 1]

Quote

The picture i posted is one i made laying in bed just for this post. The ones i made for canopies are within the specifications.

OK. Then I don't know the answer. Some canopy mfgrs use this method for attaching lines to canopies, so maybe they know the trick.

I have experienced "sneaking line ends" on my brake lines and I finally resorted to hand-tacking the excess so that line ain't going nowhere. Of course, that messes up the low labor benefit of no-sew fingertrapping. Sorry.

-=-=-=-=-
Pull.

[darkwing 5]

You might try putting a second no-sew trap near the end of the running-end of the trap. I've tried that on the no-sew pack-boy closing tool loops and it seems to work.

-- Jeff
My Skydiving History

[rtroup 1]

Lower controll lines. ITs only happening at the connection point below the eye. Not where the it attaches to the toggles. I think the friction on the eye is working it out. I just chenged them again. We will see if it comes out over the next few jumps.

(insert philosophical quote here)