ColdDuck 0 #1 January 22, 2003 Hey have any of you seen vectran line on a stilleto? I was just thinking of this the other day. I know they put it on crossfires adn such. Other than I believe it wers out faster than microline are there any other consequences to this. "Insurance should called In case shit happens, if shit don't happen shouldn't I get my money back?" Quote Share this post Link to post Share on other sites
freekflyguy 0 #2 January 22, 2003 Having spoken to Jorris from Icarus Canopies, I can offer the following info. Icarus will only spec Vectran on their VX/FX, no other option. They advise Vectran on all canopies, even Omni and Saphire. The reason for this is as follows. 1. Vectran does not shrink. It does have minimal shrinkage around 8mm (1/3 inch) as opposed to Microline that can shrink up to 8 cm (7 inches +). 8 cm of shrinkage will have a very noticeable effect on the handling of the canopy, moore so on smaller canopies. 2. Vectran is more aerodymanic than microline. The main disadvantage of Vectran, if you want to call it one, is that needs to be replaced after 400 jumps. BuzzIt's nice to be important, but it's more important to be nice. Quote Share this post Link to post Share on other sites
Rdutch 0 #3 January 22, 2003 Do a search, this has been covered before. but PD doesnt like to do Vectran line sets on stilletto's. Ray Small and fast what every girl dreams of! Quote Share this post Link to post Share on other sites
skycat 0 #4 January 22, 2003 QuoteDo a search, this has been covered before. but PD doesnt like to do Vectran line sets on stilletto's. Do you have more information as to why?Fly it like you stole it! Quote Share this post Link to post Share on other sites
markbaur 0 #5 January 23, 2003 QuoteVectran does not shrink. It does have minimal shrinkage around 8mm (1/3 inch) as opposed to Microline that can shrink up to 8 cm (7 inches +). What is your source for this information? Thanks, Mark Quote Share this post Link to post Share on other sites
Martini 0 #6 January 23, 2003 In case yer interested in real math, 8cm is about 3 1/8", less than half of the seven inches quoted. Still a lot of line shrink. All line choices are tradeoffs. Know what you've got (or want) and deal with it accordingly. But use correct information when making comparisons.Sometimes you eat the bear.............. Quote Share this post Link to post Share on other sites
Hooknswoop 19 #7 January 23, 2003 I have seen Spectra shrink over 10 inches on a Sabre 230's steering lines. I think it is a percentage thing. The longer the line, the more it will shrink over time. Hook Quote Share this post Link to post Share on other sites
freekflyguy 0 #8 January 23, 2003 QuoteIn case yer interested in real math, 8cm is about 3 1/8", less than half of the seven inches quoted. It sure is, sorry my brain is still addled from the BPA AGM. Buzz Quote Share this post Link to post Share on other sites
freekflyguy 0 #9 January 23, 2003 QuoteI have seen Spectra shrink over 10 inches on a Sabre 230's steering lines. I think it is a percentage thing. The longer the line, the more it will shrink over time. Hook Also 10 inches shrink on a 230 is not as noticeable as 3 on a 110. Buzz Quote Share this post Link to post Share on other sites
freekflyguy 0 #10 January 23, 2003 Quote What is your source for this information? Thanks, Mark This info is available on http://www.icaruscanopies.com/maintenance.htm The figures I quoted are from Joris himself. Buzz Quote Share this post Link to post Share on other sites
freefallin14 0 #11 January 23, 2003 "2. Vectran is more aerodymanic than microline. " Do explain.... Bret Quote Share this post Link to post Share on other sites
freekflyguy 0 #12 January 23, 2003 Quote"2. Vectran is more aerodymanic than microline. " Do explain.... Bret I am lead to believe Vectran creates less drag than micro line (someone could always prove otherwise). This is not an issue on bigger canopies, but is if your a swoop monster trying for that extra distance. Are you aware that swoopers are now using removeable sliders and pc's?. Imagine the amount of drag your lines create, is there anyone out there who can supply figures? Buzz Quote Share this post Link to post Share on other sites
masterrigger1 2 #13 January 24, 2003 We have relined a few Stillettos with Vectran over the years. My personal canopies (120 Stilletto) all have vectran on them now. In fact, earlier tonight I had a discussion with a good friend of mine regarding this exact subject.The canopies fly as well after 300-400 jumps on the lineset as they did when they were new.Spectra shrinks and degrades the canopy performance jump after jump even though it does not show excessive wear to the end user. I personally think Vectran is the better line option all around. After reading several of the post to this thread, I would like to clarify a couple of things. First Vectran does not shrink. At least in the several hundred canopies that we relined last year alone, I did not find one lineset with shorter dimensions that the oringinal dimensions. Vectran does stretch, but not nearly as much as Dacron.It does wear faster though. I had a post a few months back talking about the differences of line and their performance values and maybe you can locate that thread. Email me if you need any further info. MELSkyworks Parachute Service, LLC www.Skyworksparachuteservice.com Quote Share this post Link to post Share on other sites
masterrigger1 2 #14 January 24, 2003 Hook, I think that it is the "load" that is applied to the grommet on the slider that makes the difference. The grommet/line friction generates X number of degrees. More heat = more shrinkage. The bigger canopies do wear the slider grommets more I think.This theory also proves to be true when someone has a very rapid opening. More heat from the fast opening resulting in more rapid shrinkage. Just my observations. Blue ones, MELSkyworks Parachute Service, LLC www.Skyworksparachuteservice.com Quote Share this post Link to post Share on other sites
Hooknswoop 19 #15 January 24, 2003 Quote Hook, I think that it is the "load" that is applied to the grommet on the slider that makes the difference. The grommet/line friction generates X number of degrees. More heat = more shrinkage. The bigger canopies do wear the slider grommets more I think.This theory also proves to be true when someone has a very rapid opening. More heat from the fast opening resulting in more rapid shrinkage. Just my observations. Blue ones, MEL I totally agree that the steering lines shrink the most because of the reasons you mentioned. I meant (even though I didn't say it very well) that 10 inches of shrinkage was on a large canopy, and that it would very unlikely, if not impossible to find 10 inches of shrinkage on a Stiletto 97's steering lines. The longer the lines, the more they will shrink with use. It's all relative, the larger canopy won't be affected as much by the shrinking lines, even though they shrink more. I wonder if it would be possible to have "Pre-shrunk" Spectra, like jeans? I also agree that Vectran is the way to go. With either Spectra or Vectran, 400 jumps is max, but the Vectran-lined canopy will still be in trim. Hook Quote Share this post Link to post Share on other sites
