Dougjumper 0 #26 May 12, 2003 Man that sucks....But you know im glad your ok and at least were all skydivers here because it kinda sounds funny to Whuffo's ie " I got Slammed on my opening today.. ...ha..ha....sorry dude just couldnt resist just sounds kinda funny...bottom line im glad your ok..peace out... The glass is half full or half empty doesn't matter. Let go and have the Lord guide your path. He will take care of it all. Quote Share this post Link to post Share on other sites
mikeat10500 12 #27 May 12, 2003 No,no,no sweetie I did not think you rude! My old bones really like soft openings(next to a mal). I have never owned a newer canopy mostly for $ reasons, so sometimes I don't know what I'm talking about. ...mike(kissing up now)----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
mikeat10500 12 #28 May 12, 2003 QuoteQuoteQuotemy guess is line dump. Can anyone tell me how line dump can cause hard openings? Normally the pilot begins to slow you and then the lines stretch and as the canopy opens you are slowed down as the canopy deploys in a staged succession. If you have line dump, the canopy is usually coming out of the bag before you've stretched them out. Meaning the initial jerk you usually get from a small pilot chute, will be an initial jerk that you get from a much larger, partially deployed canopy. Sorry dude...can't eat that...smells funny! Has anyone been slammed to look up at a partially deployed canopy? A partially deployed canopy is called a snivel. It's when you get a fully deployed canopy slider down too fast that you get slammed. Slider=opening shock inhibitor( thats why they are their). If the slider comes down to fast it will hurt. ....mike----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
jdhill 0 #29 May 12, 2003 QuoteHas anyone been slammed to look up at a partially deployed canopy? A partially deployed canopy is called a snivel. It's when you get a fully deployed canopy slider down too fast that you get slammed. I can say that I have been slammed so quickly that by the time I was able to look up the slider was already wrapped around my helmet... I have also looked up to a fully inflated canopy anda slider at the stops... and I normally watch my deployments and and on hard ones will watch the videos... Line dump = out of sequence deployment... canopy starts to inflate before line stretch... it can and does happen. JoshAll that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
mikeat10500 12 #30 May 12, 2003 QuoteQuoteHas anyone been slammed to look up at a partially deployed canopy? A partially deployed canopy is called a snivel. It's when you get a fully deployed canopy slider down too fast that you get slammed. I can say that I have been slammed so quickly that by the time I was able to look up the slider was already wrapped around my helmet... I have also looked up to a fully inflated canopy anda slider at the stops... and I normally watch my deployments and and on hard ones will watch the videos... Line dump = out of sequence deployment... canopy starts to inflate before line stretch... it can and does happen. Josh Are you saying you know for sure you have been slammed by a canopy with the slider coming down at a normal to slow rate?----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
skycat 0 #31 May 12, 2003 Hey Josh, You do a lot of video jumps. Do you have video of line dump?Fly it like you stole it! Quote Share this post Link to post Share on other sites
jdhill 0 #32 May 12, 2003 I said I got slammed by a canopy where the slider did not come down at a normally slow rate.All that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
jdhill 0 #33 May 12, 2003 I have close to 1K video jumps, and yes, I have had line dump... rare, and by no means have all of my hard openings be due to it... JoshAll that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
mikeat10500 12 #34 May 12, 2003 QuoteI said I got slammed by a canopy where the slider did not come down at a normally slow rate. Are you saying line dump contributed to this. Cause I may actually believe that! ...mike----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
jdhill 0 #35 May 12, 2003 QuoteAre you saying line dump contributed to this. Cause I may actually believe that! Yes, that is my belief... even a slider away from the top will still snivel some... JoshAll that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
Hooknswoop 19 #36 May 12, 2003 QuoteI said I got slammed by a canopy where the slider did not come down at a normally slow rate. Right, but you also said: QuoteLine dump = out of sequence deployment... canopy starts to inflate before line stretch... it can and does happen. You have video'd lots of deployments, right. Any video of a canopy inflating before line stretch? I have video of a Sabre opening in about 75 feet, extremely hard, but the canopy didn't come out of the bag until after line stretch. I have never seen live or on video, line dump. I think line dump is possible, IF; the canopy has Dacron lines, very small locking stows, loose locking rubber bands, big PC and a high deployment airpseed, then maybe. If the D-bag grommets are 5 inches apart and you make 2 inch stows (not very big). That is 8 inches of line outside the stows and 5 inches between the stows. Gravity helps the stows stay in place, not yank them out. People have a hard opening and blame line dump, but no one seems to have any video of line dump. Lots of video of hard openings but no canopies out of the bag before line stretch. Hook Quote Share this post Link to post Share on other sites
dreamsville 0 #37 May 12, 2003 Glad you are feeling better. I had a hard opening once (not too serious) and asked some questions. One cause could be too little line between the risers and the bag, causing the bag to not release properly. I have to admit, I did not get an answer adequate from the rigger so I would understand exactly how that would impair the staging of the slider movement relative to line stretch, unless it would cause the stows to break and the slider to ride down the lines before the canopy could get out. What (to me) is at top of the list is keeping the slider alll the way up and quartered. Without wrapping too much of the tail around the lines (to avoid excess center-tail wear), try to put one or two tight little rolls of the tail around the slider grommets near the lines. Make sure this stays in place when you let out the air and do your S-folds (I Pro-Pack). The object is simply to keep the slider in place until line stretch pulls it down. I don't know what everyone else does, but I have not been slammed at any time that I made sure of these things. If the thing gets messed up on the way into the bag and you're not sure, redo it. |I don't drink during the day, so I don't know what it is about this airline. I keep falling out the door of the plane. Harry, FB #4143 Quote Share this post Link to post Share on other sites
jdhill 0 #38 May 12, 2003 QuoteAny video of a canopy inflating before line stretch? Yes, I have seen/video'd a tandem canopy out of the bag before line stretch. JAll that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
Hooknswoop 19 #39 May 12, 2003 QuoteYes, I have seen/video'd a tandem canopy out of the bag before line stretch. Any way you could post it? How did it open? Tandems fall into my 'Maybe/possibly' catagory for line dump. Locking grommets are wide apart, heavy lines, Dacron or 1000 lb Vectran, Big PC, possibly very fast airspeed at pull time, and acclerating. Any video of a sport canopy inflating before line stretch? Hook Quote Share this post Link to post Share on other sites
CanuckInUSA 0 #40 May 12, 2003 I'll likely never know exactly why I was slammed so hard, but I do know that I'd like to never be slammed this hard again. And to try and ensure that history doesn't repeat itself, I will be doing two things. 1) Even though historically I've been pretty good at making sure the slider is all that way up against the slider stops while packing, I need to be more aware of the slider location at all stages of my packing. 2) I will use small rubberbands for the top locking stows on my dbag instead of the large ones which are there right now. I'm guessing my slammer was because of the slider coming down too soon, but why not protect against a possible line dump while I'm at it. Try not to worry about the things you have no control over Quote Share this post Link to post Share on other sites
jdhill 0 #41 May 12, 2003 I'll have to see if I can find it... it was from several years ago... I can't say that I have any of a sport canopy... on the one that I suspect to be LD - 7 out of 8 stows were broken and I had line twists with very asymetrical(sp?) risers, which leads me to think the canopy loaded up very unevenly. As for the tandem opening... I remember that it looked painfull... beyond that I will need to look at the video again to refresh my memory. jAll that is necessary for the triumph of evil is that good men do nothing. - Edmund Burke Quote Share this post Link to post Share on other sites
johnny1488 1 #42 May 13, 2003 QuoteSlammer openings on a Sabre2 aren't the norm They might not be the norm but I think I've heard of at least one (often times more) from every sabre2 pilot (and I use that term loosely) on my dz. Did I mention I love my Icarus? Different strokes for different folks. Johnny --"This ain't no book club, we're all gonna die!" Mike Rome Quote Share this post Link to post Share on other sites
mikeat10500 12 #43 May 13, 2003 Quote >>snip>>I'm guessing my slammer was because of the slider coming down too soon, but why not protect against a possible line dump while I'm at it. Nothing wrong with that plan!----------------------------------- Mike Wheadon B-3715,HEMP#1 Higher Expectations for Modern Parachutists. Quote Share this post Link to post Share on other sites
