Spectra line shrinkage.

[kaerock 1]

I've got a Stiletto 135 that is quite used. I checked the line lengths a couple of weeks ago, and while shrinkage on the 550 Microline is pretty symmetrical, the outside lines are about 2 inches shorter than the spec. The canopy is very well-behaved, so I don't notice any performance issues, but how much shrinkage should one allow before replacing lines? It seems as though there is no exact answer for this, but I was wondering what people used for a guideline.

-R

You be the king and I'll overthrow your government. --KRS-ONE

[diablopilot 2]

If there are no opening or flight problems, I guess it doesn't really matter. However I would be more worried about breakage with the 550 Microline, after too many jumps.

----------------------------------------------
You're not as good as you think you are. Seriously.

[Clownburner 0]

Interesting... If you've got 550 and you send in for a reline, can they reline with 825 without any issues? Or are you stuck at the original line diameter?

7CP#1 | BTR#2 | Payaso en fuego Rodriguez
"I want hot chicks in my boobies!"- McBeth

[Kolla 0]

You can choose between 550 & 825 microline, you can even get a set of dacron lines if your heart desires
Kolla

Blue Skies Magazine

[PhreeZone 20]

But can I get a set of Vectran lines? Maybe a HMA/Vectran combo line set?
What is PD using for the break lines on the majority of their canopies? Is it 825 or is it thicker?

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[ianmdrennan 2]

I jumped a stilletto a while back with dacron (Craig West's)....damn did that thing take forever to open.

Was kinda sweet actually.

Blue skies
Ian

Performance Designs Factory Team

[Shivon 0]

Does anyone know - would it be possible to just get a complete reline using HMA? Obviously cost would be an issue, but doens't this make sense?

[Kris 0]

Quote

Does anyone know - would it be possible to just get a complete reline using HMA? Obviously cost would be an issue, but doens't this make sense?

Anything is possible, given enough money. It would probably be costly though.

Also, the lines would have to be continuous. No cascades because of the line size.

Sky, Muff Bro, Rodriguez Bro, and
Bastion of Purity and Innocence!™

[Kolla 0]

Vectran is a possibility - we haven't offered that on the Stiletto so far, as there for that canopy it isn't a huge advantage. It would just take time to get all the templates set up, and then to reline with Vectran would be a tad more expensive than to do it with Microline.

PD doesn't offer HMA for any type of canopy, at the moment at least - who knows what the R&D boys might come up with though
The control lines are 1000 lbs, both on 825 & 550 linesest.

Blue Skies Magazine

[Kolla 0]

Yup, soft openings and the lines seem to last forever compared to the other stuff!
It's mainly video guys & gals that go for the Dacron, or people that have sensitive back/necks, and need the extra padding on opening.

It does increase the pack volume a bit, and those that have changed from microline to dacron say they notice a little bit more drag in the lines.

Blooos!
kolla

Blue Skies Magazine

[kaerock 1]

Right, but this thread is about SPECTRA line shrinkage.

-R

You be the king and I'll overthrow your government. --KRS-ONE

[riggerrob 643]

Brian Germain (designer of the Jedei, Lotus, Samurai, etc.) said that when the difference across the "A" lines gets to 3 inches, he recommends replacing all the lines.

[PhreeZone 20]

He's also told me that on the Jedei's if with the breaks set the breaks are equal to the B lines its time to change the break lines.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[kaerock 1]

Great, all I was looking for was some kind of rule of thumb, ballpark figure, etc. Thanks!

-R

You be the king and I'll overthrow your government. --KRS-ONE

[sducoach 0]

Put your tounge back in your mouth when you are talking to Kolla.

Don't get yourself caught critizing Kolla, you'll loose.
J.E.

James 4:8