phoenixlpr 0 #1 January 9, 2004 Hiall, Ive just bought a kill-line PC. I was told its the best. Is it better than other solutions? Hos is it working at all? Thanks 4 your answers. Quote Share this post Link to post Share on other sites
Chrisky 2 #2 January 9, 2004 Just pull on your hackey with the grommet fixed somewhere to cock it. Then pull the bridle and you'll see... The bridle will slide back, collapsing the PC, once there is a pull force on the grommet (open canopy). A K-Line PC will minimize drag from the PC connected to the center cell top skin. Or just read the manual of any given container, instructoins for K-line-PCs should be in there.The mind is like a parachute - it only works once it's open. From the edge you just see more. ... Not every Swooper hooks & not every Hooker swoops ... Quote Share this post Link to post Share on other sites
phoenixlpr 0 #3 January 9, 2004 So if its cocked its pulling out the canopy, but what force makes it collapse? Quote Share this post Link to post Share on other sites
FrogNog 1 #4 January 9, 2004 Its endearing feature is that after the canopy comes out of the bag, the PC changes from an anchor to a rag. It does this by having two connections to the canopy/bag pair. One line (the PC bridle, I believe) connects the apex of the PC to the bag, and the other line (the kill line) connects the crown of the PC to the canopy tie-on point. These lines are typically coaxial - the kill line is often something like a suspension line and runs inside the PC bridle, which is like a hollow piece of webbing. The kill line is free enough to slide inside the PC bridle so that when the canopy gets out of the bag, the bag can slide backward away from the canopy and toward the PC, which lengthens the apex connection compared to the crown connection and effectively turns the PC inside out. I believe there is also a backup piece of PC bridle from the bag to the canopy connection point so in case the kill line wears out and snaps, the PC can still do the critical part of its job (deploying the canopy), it just won't collapse when it's done. (I apologize to any old-timers if I have explained this backwards or confused any of the forces involved. This is the state of the art of my understanding based on my own inspection and use.) Kill-line PCs must be "cocked" before each use. This act moves the slack in the kill line from the canopy/bag end of the PC bridle to the inside of the PC so the PC has the right geometry to be an anchor again for a little while. -=-=-=-=- Pull. Quote Share this post Link to post Share on other sites
phoenixlpr 0 #5 January 9, 2004 Thanks. It was quite descriptive. My kill-line PC is safe, I cannot close container if its not cocked because the closing pin is hidden :). Quote Share this post Link to post Share on other sites
nacmacfeegle 0 #6 January 9, 2004 Be careful if you want to go freeflying with one of those. I have one and changed it out a long time ago. I was worried about premature deplyoments.-------------------- He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. Thomas Jefferson Quote Share this post Link to post Share on other sites
Zeemax 0 #7 January 9, 2004 hidden closing pin, or kill line pc?Phoenix Fly - High performance wingsuits for skydiving and BASE Performance Designs - Simply brilliant canopies Quote Share this post Link to post Share on other sites
nacmacfeegle 0 #8 January 9, 2004 Kill line PC with a retractible pin(I don't see a reason for jumping a non collapsible PC in this day and age). They are less flexible than 'free' pin bridles, so more prone to premmies if a portion of bridle floats or is moved around even a little. Sorry, should have made that clear.-------------------- He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. Thomas Jefferson Quote Share this post Link to post Share on other sites
Zeemax 0 #9 January 9, 2004 its all good, i didn't think you meant the pc. I cant also cant see any reason against themPhoenix Fly - High performance wingsuits for skydiving and BASE Performance Designs - Simply brilliant canopies Quote Share this post Link to post Share on other sites
slug 1 #10 January 10, 2004 >>(I don't see a reason for jumping a non collapsible PC in this day and age).>> How abour already have a non collapsible PC and don't jump a rocket ship. IMO there are two advantages to continue using the old fart PC. Don't have to remember to cock it + one less mal toworry about, PC already paid for R.I.P. Quote Share this post Link to post Share on other sites
sundevil777 102 #11 January 10, 2004 RIP, you are so old People are sick and tired of being told that ordinary and decent people are fed up in this country with being sick and tired. I’m certainly not, and I’m sick and tired of being told that I am Quote Share this post Link to post Share on other sites
slug 1 #12 January 11, 2004 QuoteRIP, you are so old Thank you Sundevil I enjoy getting older being able to get older. Sometimes i even get a senior citizen discount, never hurts to ask. Funny thing is when you ask for the discount and they ask for I.D. some people can't do the math or I just tell them DOT made a mistake on my liscense. R.I.P. Quote Share this post Link to post Share on other sites
BlindBrick 0 #13 January 13, 2004 QuoteKill line PC with a retractible pin(I don't see a reason for jumping a non collapsible PC in this day and age). If you're jumping with less than a 1:1 wingloading, the drag reduction really isn't noticable. Given that, having a non-collapsible PC is just one less thing you have to worry about. -Blind"If you end up in an alligator's jaws, naked, you probably did something to deserve it." Quote Share this post Link to post Share on other sites
hookitt 1 #14 January 13, 2004 It's noticeable even on light wing loads. Collapsable PC's also allow you to experiment with Stalls and back spins with out having to worry so much about what happens if the Pilot chute falls over the nose. Understand how it works, put cocking it into your packing procedure. It's a simple task. I've had one since about jump 40 and haven't forgotten it was there. Think about it. when you pack it, ask your self, is this pilot chute ready to inflate? There are only 2 answers to that question. Yes: then stow it away No: cock it, then stow it away.My grammar sometimes resembles that of magnetic refrigerator poetry... Ghetto Quote Share this post Link to post Share on other sites
phoenixlpr 0 #15 January 13, 2004 Im not sure if its a real problem. I always test my PC before stow. I can close the container because the pin is hidden if PC is not cocked. Quote Share this post Link to post Share on other sites
riddler 0 #16 January 13, 2004 QuoteIf you're jumping with less than a 1:1 wingloading, the drag reduction really isn't noticable. Drag for a non-collapsible PC is going to be primarily due to the diameter of the pilot chute - something that is not necessarily related to wingloading. Quote Share this post Link to post Share on other sites
phoenixlpr 0 #17 January 13, 2004 But resistence is ~c * v ^ 2 where c is a contant of the PC. He whanted to point out that under WL 1.1 speed is not so radical..... Quote Share this post Link to post Share on other sites
