Tension knots

auvergnat

Re: [hjumper33] Tension knots

Thank's for your reply.
We found out that about 10 people at list are using silicone on their line in base in France.
All of them say that the silicone they use is not sticky and doesn't catch dust at all and don't make the canopy dirty at all.
They find out that they have to reaply every 100 jump
It make the line really slippery as they opening is immediately harder (slider going down faster)

84n4n4

Re: [flyjeronimo] Tension knots

flyjeronimo wrote: About tension Knots as W_Heisenberg said, never used some chemicals on nylon, never!!!
dacron is a polyester... (just trolling :-)

auvergnat wrote: the silicone who are using is one wich is use on wet suit so directly in contact with the body and have no solvant or allergene.
first off, if its ok for humans is not a valid argument. theres plenty of stuff you even eat, put on your skin, etc, or stuff that comes out of you, that you shouldnt put on your lines.
talk to the canopy manufacturer what is ok to use on their product, and if they refuse (because they dont want to have the liability), try to locate the manufacturer of the line.

second, im pretty sure that pure silicone isnt doing anything bad to dacron, and im entirely sure it doesnt do anything bad to spectra. (cypres loops anyone?).
the problem is to get your hands on pure silicone, with all the available commercial divers, car cleaning products, etc. you cant be sure what additional stuff is in there, aswell as what contaminants they are getting in there when producing the stuff. (dont forget about the propellent if it comes as a spray can)
so you could go there and buy a bottle of pure approved silicone lube from cypres, the problem here is going to be how to apply it properly, which leads to...

third, it is going to attract and accumulate more dirt than without the silicone. there shouldnt be a discussion about that. its obvious if you got sand stuck on it its bad, but im thinking more about the small-cant-really-see dirt. just look at your yellow cables on your skydive rig, or pull some rag through your housings. that stuff will build up on/moving into your lines.

last, i dont know if that dirt can/will damage your rig, depends mostly on what it actually is. and that can vary a lot i guess, depening on where you jump, store, move your rig around. so you could end up that one guy has perfect record with that method, and that other guy has random broken lines after a low number of jumps.

so if you want to have a lower friction coeffecient for your lines, and were talking slider up here, switch to spectra lines instead.

jamer

Re: [auvergnat] Tension knots

Silicone is for fake tits and good sex toys. Leave it in the bedroom not on your base rig

try2live

Re: [auvergnat] Tension knots

I always ensure that my lines have been properly lubed with KY jelly. Plus, if you ever find yourself in a gangbang, you can use the lube at your discretion.

http://www.facebook.com/HollywoodBASE
Snake River Base "All BASE jumping instruction is NOT the same"

bluhdow

Re: [Fledgling] Tension knots

You are correct. I misunderstood Todd during our discussion and hadn't considered brake settings. In retrospect, it's obvious now that I think about line length during packing.

That said, tension knots occur between the same two stated line groups, I just mixed up which lines were longer.

Thank you for correcting me! Much appreciated, and I'm glad we could correct the record. =)

We still want photos and video though! Any footage provided will be studied as we consider the causes and possible solutions.

#1816

Fledgling

Re: [bluhdow] Tension knots

I always place my slider between the control lines and D lines and then stow it into the indirect control on terminal jumps. We know these two line groups are the most likely to cause a tension knot, we also know that it usually happens above or at the slider, and we also know it happens at the time the lines are being loaded. So in my mind placing the slider between the two line groups helps to keep them separate until the lines are loaded. Remember it is your control lines that push your slider down, so it will remain in place between the two groups until there is enough load to make it move by which time the threat of tension knots should have passed. I feel it also acts as a pseudo tail gate as well.
P.S. I used to do this on all slider up jumps but feel it may have been causing heading issues on subterminal jumps.

TomAiello

Re: [Fledgling] Tension knots

Could you post a photo of your pack job with the slider up, showing where you place the lines relative to the slider? Please?

Thanks.

Tom Aiello

Tom@SnakeRiverBASE.com
Snake River BASE Academy

Fledgling

Re: [TomAiello] Tension knots

TomAiello wrote: Could you post a photo of your pack job with the slider up, showing where you place the lines relative to the slider? Please?
I was originally shown this method as a version of the good old slider gate. Since then I have also come to the conclusion that it keeps the offending tension knot lines separate, at least above the slider any way.

fanya

Re: Tension knots

From my time in the tandem world, worn lines are the biggest cause of tension knots. I'd say starting at the 400 jump point is when they start to become an issue.

Line sets are what 300$? I'd be replacing line sets every 300 jumps if I was in the big wall base world, or sooner. At a 1$ a jump it's pretty cheap insurance.

roostnureye

Re: [Fledgling] Tension knots

Fledgling wrote: TomAiello wrote: Could you post a photo of your pack job with the slider up, showing where you place the lines relative to the slider? Please?
I was originally shown this method as a version of the good old slider gate. Since then I have also come to the conclusion that it keeps the offending tension knot lines separate, at least above the slider any way.
i pack exactly like this, but i do not use a stow on the slider, i just wrap the lines with the excess slider on each side. kinda like a burrito.

BASE 1580
Aussie BASE 121

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