Avion

Thinking this through, it would be a big job to do with pencil and paper. The risers are also going to introduce some complication by linking to the lines some distance from where risers join together. I wonder, if canopy designers use AutoCAD. I just got a copy

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By using the two triangles together with the shape of the lower edge of the rib, their orientation could be determined.

This is why I mentioned that a design reference would be best. By using the both AB and CD lines in order to determine the orientation of the triangles, I imagine a reasonable value for all the continuous lines could be evaluated. Even then the shape of lower edge of the ribs will also have to be taken into consideration, in order to get an accurate figure. I'm familiar with engineering, I'm just new to skydiving

Having: 1) The length of Line A from the AB cascade to the canopy, 2) The length of line B form the AB cascade to the canopy, 3) The length between the line A attachment point and the line B attachment point, 4) The length between the AB cascade and the riser link. It would be possible to calculate the lengths necessary to fabricate continuous A and B lines. However, doing such reverse engineering may introduce slight errs that could make the canopy fly off heading or react differently to similar right and left toggle input. I doubt any company would release figures without first testing the resulting line set. So, it might be hard to get an useful answer from a manufacturer. Once big companies get used to doing things one way, they tend to keep going that way. HMA is new, and I presume HiPer is also fairly new compared to PD and BigAirSportz, and is trying to get its share of the market by being on the cutting edge of technology, rather than relying on a reputation. The other big companies will probably migrate to using HMA in time, if it continues to stand up to its claims. I'll send Brian and PD a note. I just thought it might have already been done.

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Dacron stretches out trim after a while, right? 500-800 jumps. Also, dacron increases pack volume, with an air lock, already more volume plus dacron lines, it might be a significant increase. I like Dacron for reserves, where the shock of a high speed deployment would be softened, and only hopefully a few uses would be far less than enough to stretch the lines out of trim. My impression is that HMA is the latest step in lines with reduced drag. First, Spectra less drag and stretch than dacron, but supceptable to heat shrinkage. Then Vectran, heat resistant but supceptable to abrasion. Now HMA, less drag(thinner), heat and abrasion resistant, and been reformulated to be more UV resistant. So, if your going to reline anyway, why use anything but dacron or HMA? Why were the lines cascaded in first place? To reduce pack volume? HMA is already so thin, a continuous set would only be slightly larger than cascaded spectra and smaller than cascaded dacron. Since, I will be asking only moderate performance from my canopy, I am looking for airlocks, only a slightly eliptical form, and have basically decided on a Lotus, the added drag I doubt will be an issue. So, I guess it comes down to preference. I'd use a continuous dacron line set, but it would pack HUGE The only liability I see of having continuous lines is that there are more of them to possible snag on something.

That's what was on my mind, organizing everybody docking and the last few rushing to complete it. Sounds scary

What I would need is a dimensional reference between the the riser links and the attachment tapes. I might possible to figure it out by measuring a existing cascaded line set and then doing some math. But, I think it would be better to use a design print or CAD data. This would be proprietary data.

I like the idea of having continuous lines if one breaks or has to be cut, less over all effect on the rest of the canopy. I only want medium performance, so the wind drag addition will probably be negligable to me. HMA is so thin it would probably be too small to notice anyway. Seems like, its really a factory question. To recalculate the length, I would need a design reference. Thanks

Ha, did I just see you at the PIA Symposium. I was at Rob's lecture on relining canopies, and I think I saw you there at the end, talking about HiPer canopies and HMA lines. It got me thinking. Brian's already got me sold on an airlock

Has there been any conversions of canopies that originally came with a cascaded line set to a continuous line set? In particular, say the viability of relining a Vengence with a continuous HMA line set. Does anybody think this would work out alright, and would any changes have to be made to the slider?

I only one I have heard of having to wait at is Titusville. That leaves Zhills, Deland, and Lake Wales in the Central Florida area. Oops, and Sebastian a little more down the East Coast.

I had four teeth pulled and metal braces for two years. It ran about $2,400 in 1977-78

[replySpeaking of what we have and have not done. Avion, have you ever jumped out of a plane? Umm... Well, I'm planning to.

I think it snagged on the #2 flap, between the stiffner and the rest of the rig, and ripped the rig up a little. It's a German rig. Apparently there have been at least two similar mals with that type of rig reported within a year or so. The company claims it was due to free stowing the lines in the container. This is one of those things that I'm glad I saw before hand. Just how much time is there in this situation to cut the snagged lines with a hook kife, presuming that deployment is at 3000' Less than ten seconds before 1000' ? (Cause it takes 2-3 seconds or more to realize that there is a mal.) I doubt it would spin much after the line was cut, unless it was a brake line. Even then, chop the main or cut the other brake too, right? The jumper said that after thinking about it, he would try a hook knife if it happened again. This time he just did what he was trained to do: Uncontrollable main = Chop it.

The only thing I know about speed stars is that you form them, as fast as possible, and ride them all the way down to break off. The competition is in how fast you can complete them. Have you worked on anything bigger than a four-way before Cheers

Check this: http://www.paraequip.com/index.cfm?fuseaction=category.display&category_ID=11

The mechanic's gloves I have are black and blue, they match the jumpsuit's at the tunnel Skyventure sells white gloves like the NSL ones, but a little better.

1) Have at least one family the way I want to. 2) Get a patent for my invention and sell it for beucoup d'argent. 3) Finish developing my computer amplifer and market it. 4) Finish developing and market my cryptographic algorythms and PRNGs. 5) Record the songs I've composed, get a band together and do several world tours. 6) Get through AFF, get A licence, get a B licence, and get USPA and Skydive U Coach ratings. 7) Write a SciFi screen play that gets turned into a blockbuster movie. 8) Write a SciFi trilogy that changes the course of human history. 9) Create a Scifi series that will prepare us for when we have to leave this planet and be pilgrims in space. 10) Finish creating the grammers for my three engineered languages.

I've got broadband and an internet phone. Cable Modem $45/month Internet phone $20/month (Unlimited calls to USA, Canada, and Western Europe) The phone will work on any broadband access any where

I presume ash dives are illeagal because most states regulate the manner in which personal remains may be disposed of, and speading ashes over populated areas I'm sure would be disapproved of.

I'm using a pair of mechanic's gloves form HomeDepot. I think HomeDepot is only over here in the colonies . But, if you have any building supply companies you might check with them. There are all kinds of really good trade gloves being made to day, some with textured gripping surfaces and in a varity of colors. Cheers

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