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RiggerLee last won the day on May 5

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  1. RiggerLee

    Abnormal Closing Loop Wear?

    Look around the loft. There will be a bin of scrap line from the last few relines that your rigger has done. Ask him if you can have some scrap line. There will be enough 750 and 1000 lb line there for 10 life times of loops. If you don't know how to finger trap, learn, or just look for loop ends that are still good where they took them off the links. Their are up to 24 pre made closing loops in every line set. Or borrow a fid and make hundreds of your own. Each will last 100 times longer then the ones made from gutted type 3 that you are using now. Lee
  2. RiggerLee

    Abnormal Closing Loop Wear?

    What are you making the loops out of? It's not a fix for other existing problems but if you go to a heavier loop, like a spectra it may last a lot longer. Lee
  3. RiggerLee

    Financing for dropzones

    It took a great deal of effort to avoid busting out laughing in the middle of the shop reading this. But then I stopped and thought about it and there are some very successful DZ owners. I am not one of them. This is just my perspective from observing this for close to thirty years. There seems to be a formula for being successful in this industry. Oddly it seems to be to not try to make money running a DZ. As far as I can tell most of the real money is made in other side operations. Running, leasing, buying, and selling aircraft for example. And even then unless you are very smart about it you can lose your ass. It's hard for me to imagination a busyness plan that you could walk into a bank with that would not make them cringe. Such people are extremely risk adverse, and I'm just talking about finance. I can't imagine how they would react to the liability. I'd try to couch it in the form of a aircraft deal supplying services to another company with whom you have a signed contract... etc. And it's hard for me to imagine being successful with the payments for a busyness loan hanging over your head. People finance aircraft and the payments kill them. Banks want a lot of insurance on some thing like an aircraft. Insurance companies ether will not let you use them for skydiving, or want a good/expensive pilot, or want a lot of money. Some people self insure which basically means you don't need a loan to begin with. If you want to look at an example, look into how Roger Nellson started his Chicago drop zone after he got out of jail. If he was still around he would straight up tell you how to do it. Maybe his family will tell you the story. If I was going to try to make money in that field... I wouldn't do it, not directly. I'd buy a plane. I'd start an independent aviation service supplying service to drop zones. Be careful with you contracts. If they can't make the payments or supply the busyness move some where else. Be a snow bird. I would fly the plane my self, or hire a very good pilot. I'd self insure. And I would not take out a lone. If you can't do that, buy a smaller plane or don't do it at all. You need to be a pilot, A+P, I. Why on earth would you want to buy a dropzone? Is it making so much money, are the books so good that it is actually attractive as an investment? There have got to be way better investment opportunities out there with better and more certain ROI then a dropzone. This smells passion motivated. If that's the case, then if you don't have the money to do it then you don't have the money that you will lose supporting it. No loan for you. Lee
  4. RiggerLee

    B12 Harness for Jumbo PC

    So if you find a harness, what are you going to use as a reserve? We set up a rig for a guy one time on an all round jump. It was a jumbo crossbow but the biggest challenge was the reserve system. We finely found him a 28 ft chest pack. Also, the only malfunction that I've seen on a PC was with a bag. It does pack up much smaller but I think there is some thing to be said for getting a round canopy to full extension of the canopy before the sleeve slides off. A bag gets it to line stretch but then it's just a dump and a lot of ugliness can happen before the canopy is extended and under tension. With larger systems a lot of work goes into getting the canopy to full extension and the apex under tension before the skirt starts to open, keeping tension on the apex, and controlling the fill and crown location. Over the years these ideas have been trickling down to smaller systems. It would be a shame to burn up a nice PC. Lee
  5. RiggerLee

    UPS left rig in truck for 3 days

    It'll be fine. If you don't want it I'll take it. Ship it to me and it can sit in a truck for three more days. Lee
  6. RiggerLee

    No Pilot Chute Belly Reserves

    There is this guy in... Guatemala? or some place down there. I keep running into him over the years. He has a fetish for old gear and is out to jump every thing ever made. He borrowed my paradatctals to jump them. He's also trying to recreate all the old stunts and did that one a few years ago. Lee
  7. RiggerLee

    Packing innovations

    In regards to line stowage. I do recall people just making two stows on the bag and coiling the remainder of the line in the container. I knew a guy that did this with an old crw canopy. There were two thoughts. First it was quicker and easier. Second, some people did it to try to avoid bag wobble and spin on the way to line stretch. Down side, the reason this fell out of favor is that sone times one of those lines that is streaming out of the container gets looped around a side flap and causes a nasty horse shoe malfunction. A guy died at our drop zone from such a mal, or at least that's our best guess. And he wasn't even coiling all the lines in his tray just maybe a little two much excess. So it can and does happen and leaving all that line in the tray is just asking for it. Packing with out a bag. Done a lot of this with various canopies doing CRW. I've jumped tail pockets, tail flaps, diapers of various types as well as bags. If you're having trouble packing with a bag you will not enjoy closing a container on a free packed canopy. Basically you are folding and packing the canopy at the same time that you are trying to close the container. It's also easier to damage the canopy when it is not protected by the bag. Splitting it up in to two steps, folding and controlling it with a bag, and closing that bag into a container as two separate steps is easier. In the end you can actually jump with out a bag just fine. It's all about getting the canopy to line stretch in good order with the line straight, slider up, and the breaks set. It can be done but a bag offers a far more positive staging method then a tail pocket. You could go with a diaper, they are almost as good but most people don't want to deal with the lose canopy closing the container. They prefer the canopy to be in that warm dark bag, out of sight out of mind. Generally speaking what we have always found is that staging is the most important factor in the opening of the canopy. If you look at the numbers more and better staging of the deployment translates to lower malfunction rates and more consistent openings. Lee
  8. RiggerLee

    Packing innovations

    I couldn't find an actual clip. This is the best I could find. It's cropped and a terrible picture. Go to 1:45 Proof we have been working on the idea since the 1980's and it still isn't perfected. Lee
  9. RiggerLee

    Packing innovations

    He actually has asked some legitimate questions. He's a newbe and has discovered that packing sucks. He will in time get better at it. The question of is their a better way is perfectly valid. He's asked if there is a better way to make stows. He has asked if you could build one that can be tightened after the stow is made. It's a perfectly good idea and strong in fact did this and still does on their tandem reserves. The idea had it's own problems and never spread. If he or any one else wanted to play with it any rigger could add the little bungee holders to your bag. He asked if stowless bags were better. Valid question. People are making and jumping them. There are real advantages to them but I see problems as well. I say the jury is still out. He asked if you could close the container losely and then post tighten it. We do that with the loop on some reserves. It can be made to work but we have also seen issues with it. I've never seen it on a main. I can't think of any modern equivalent of a pack opening band but we could use a strap running to say a buckle under the back pad to do some thing like that. I actually did some thing like that with compression straps on a back pack/base rig kind of thing. It was a monstrosity but it did work I jumped it on trips. Honestly if we really wanted to make packing easier all we would have to do is become a little more rational about how we size rigs. He hasn't come up with any thing new or revolutionary... yet. I keep waiting for some gem to fall out of his mouth that will revolutionize the world. It could happen. Monkies might reproduce Shakespear. It might take longer then the heat death of the universe, but it might happen tomorrow. You'll never know what will stick and you wont find out unless you throw it against the wall. Lee
  10. RiggerLee

    Packing innovations

    Actually some of these things have been done. First off a lot of this difficulty is you using poor technique. Stowing lines. I'm trying to visualize and verbalize how I do it and it's been a long time since I even thought about it. I hold the bight folded in one hand with my thumb along it supporting the bight. I use that thumb to hook the rubber band that I'm wrapping around it with my other hand. I use that to wrap the band around and some how slip my thumb out in the process and have a nice neat double wrapped stow. Sorry I just do it and after 20 years they just come out perfect every time. You just need to practice more. It's not that stressful on the band. It's the pulling off that kills them. Strong used to use bungees to stow the lines on their tandems. You would stow the bight of line in the loop of bungee and then pull a plastic sleeve up to tighten that loop around the bight of line. Kind of a two stage process. Still on the freebag. It worked but it could be hard to find good quality bungee. They wore like any thing else. They went to an anti line dump flap. If you think about the pull up cord and flaps as pullies and pull in the right direction to use them as pullies and compress the opposite side with your knee so that your not doing all the work with your pull up cord all of a sudden you might find that the job is not so hard. If your packing a student rig right now you don't know tight. Try to make sure that you are wiggleing the bag down into that side and pulling the flap out, up, and around the side before you try to close it with the pull up cord. Some larger rigs, student rigs, use 1000 denere cordura for both the bag and the inside of the flap. Not slipery, does not slide well if you just try to close it with the cord too much friction. Pull the flap around first as far as you can before you try to close it. Use your knee to compress the bag. Then switch your knee to the out side to compress it towards the center as you pull it the rest of the way with the cord. I'm a base jumper and free stow pockets have their place in base and reserve bags for special conditions but they are not the most positive form of staging. The stowless bags are a fad going around right now. I don't know if they will indure. They can be fast and convenient but that doesn't necessarily make them the best design. And there have been containers where you closed them, loosely and then tightened them. Once apon a time there was some thing called a stow band. They were actually springs sewn into straps to tighten the flaps and pull them open. This was in the days on cones and pins. We found loops to be much better. I suppose you could also call Racer reserves or Reflex reserves kind of a two stage closure. You close it loosely and then tighten the loop. They work but you can bend pins, cause hard pulls, your uncertain how tight they now are, etc. But it's been done. You'll notice that all the containers just close, It's not that big a deal just learn how to do it. Lee
  11. RiggerLee

    Packing innovations

    Reexamining procedures and techniques is always a good exercise. But keep in mind that we have been doing this for a while. There are often reasons for every thing you see done but they may not be apparent. In asking these questions you may learn why these things are. Be careful about who you lessen to. Remember that the institutional in this sport is rather short. A lot of people only stay in it for a few years. So reasons for things get forgotten or things that had no reason become local dogma. Some one told them that once, they repeat it, then it becomes a rule. There is a lot of miss informed bullshit that is passed around as fact with limited understanding. What makes a good pack job... Lines straight. Slider up. Breaks set. Really it's about getting the canopy to line stretch in that configuration. That simple statement conceals the complexity of that task. The slider is a negative feed back control system for the opening of the canopy. The wind fights to keep the slider up, the canopy fights to open. The faster you go the harder the slider tries to stay up and control the canopy. As the canopy fills with air and the speed slows the canopy becomes dominant over the slider and starts to push it down and the canopy opens. That is a deceptively simple explanation. How hard the opening is is very dependent on how fast you are going when the canopy becomes dominant over the slider. If for any reason the slider is not dominant over the canopy in the early phases of the opening... google base jump and slider down to see the behavior of a canopy not controlled by a slider. At terminal, it's just a question of what will break first and unfortunately we tend to build our gear pretty tough. You might be the part that breaks and that's not rhetorical. Numerous fatalities and injuries from just hard openings. The heart tears lose inside the chest cavity and the aorta bleeds out into the chest and you die. See the same thing a lot in helicopter crashes with vertical impacts. The dominance of the slider depends on it being at the top of the lines. It's mechanical advantage depends on that. Just a few inches can make the canopy dominant and the slider fails to control the opening. Dynamic pressure goes up with the square of the velocity but it's worse then that because the fill rate of the canopy also goes up increasing the power of the canopy over the slider. The result can be an exponentially harder opening. The slider is also dependent on line tension. This sounds strange but if there is a pop where the lines briefly go slack the canopy can pull line through the slider as it tries to spread above the slider. Think of the canopy as a spring and the lines pulling the canopy down against the slider squeezing most of the cells together and closed at the grommets. The wind holds the slider up and the lines pull the canopy down against the slider keep it squeezed down. Sudden slack in the lines means that the canopy is lose to to expand above the slider and suddenly you get an explosively hard opening. How could that happen? Lets say you had a container with really tight riser covers, ether at the shoulders or the secondary covers alond the reserve tray that have become popular. There can actually be a lot of variation in the retention force of those covers based on, for instance, where it curves over your shoulder. Depending on how long the main lift web is on the container the cover might bend over your shoulder or be farther down your back with little curve. This is part of why many people are trying to move to magnetic covers, if done properly they can be less dependent on geometry. The real truth is that tuck tabs were a pain to build constantly and booth was looking for some thing easier. They had the side effect of actually, or at least potentially, being better covers. Every thing else is hype but they did turn out to be more reliable in there opening forces. But lets say that they stay closed, bag goes to line stretch, canopy comes out, slider spreads, then the risers pop causing a loss of tension in the lines. Hard opening. How might this happen? Lets say you had one of those cool new stowless bags. They have almost no tension on the lines as the lines just slide out of that pocket. The last two stows can be poped just by the inertia of the risers and lines and may not open a tight set of covers. Take the bag out of the container on the floor. If you hold it and walk upwards do the line stows have enough force to lift the risers and unstow the covers. Keep in mind that this happens fast so there is an inertia thing you are fighting as well. Those new bags, as cool as they are, are just not the most positive form of staging. Worse if one or both of the risers are caught under the corner of the reserve tray. The length can be over three feet. Or if one is caught the difference in length between the two sides will be over three feet. So one side of the canopy is pulling down one side of the slider very unsymmetrical The difference can be more then the width of the slider. So the other side of the slider the grommets are actually pulled down the lines allowing that side of the canopy to open above the slider with no control. And since the slider is not exactly making a lot of drag being pulled down by one edge rather then being flat to the wind the other side opens almost like a slider down canopy. Know a guy that was paralyzed by that. He's a quad now. I'm not trying to scare you. I'm just saying that there are some important things going on during the chaos of an opening. There has been some thought put into some of the things that we do. The reasons may not be clear and worse people may have a hard time articulating the why. A lot of the why gets lost in time when the average generation of a jumper is only about 5 years or less in some areas. It's just what they were told but they don't know the why. Keep asking questions. Lee
  12. RiggerLee

    Smallest chest mount reserve?

    I think an aerostar/phantom would be the smallest. I remember once I was putting some old rigs together for a jump. I missed the opportunity to buy a chest mount. I don't recall what it was called. It was from the cone era but it used through loops. Loops of ungutted type 3 from the bottom to the top, canopy stacked on it's side, loops came through. Two pins. Can not for the life of me remember what it was called or who built it. I was told that it was the smallest at the time which was probable the case. Any clue what that was? Lee
  13. RiggerLee

    Looking for some ideas

    You won't see a lot of them. Notice they talk about a pin being pulled. There were some early ejection seats where the parachute was still worn on the back separate from the seat, typically BA-22's, that had low altitude lanyards and others where they had AAD's that would go off a timer as well as altitude... This was kind of in the same vane. I think it was supposed to be simi compatible with some of these older systems or at least in the same vain. So when you separated from the seat it would turn on when the pin was pulled. Or you could walk around in it and pull the knob before you jump out. If he can't find the handle... I've only run into a few over the years but it's some thing you will see in an air crew rig like you might find on such a plane as this. Load masters that are working in the back of a plane doing air drops wear them. I've seen them used out in Eloy. It's a thing, you just don't see it in skydiving. Lee
  14. RiggerLee

    Looking for some ideas

    There is a Air Crew Cypres. You find it in emergency rigs, single canopy rigs for pilots and flight crew, mostly military or contractors. http://www.ssk.us/EAC_20031202.pdf Lee
  15. RiggerLee

    Smallest chest mount reserve?

    Is the guy that bought Jerry's TSO still building chest mounts? He had TSO's in all four categories. New guy is trying to make a real push to break into the pilot market. You might be able to get a custom rig from him. Lee