dpreguy

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Everything posted by dpreguy

  1. dpreguy

    nil winds

    massis. What is a CTL? So, at your dropzone, there is someone standing next to the arrow all day, every day, manually moving the arrow and holding it in the desired direction?
  2. dpreguy

    US flag made out of F111 material.

    ThighMan. A big problem with "F111 type" material (Harris mills no longer makes actual F-111), is that the darkest red they sell is pale. It looks pretty good on the packing table, but when the sun shines thru - it looks like anemic pink. Also, make sure the blue is very very dark blue. Whatever you have it made of, do yourself a favor and get samples before you have it made to make sure the colors are dark enough to make it look like a real flag - not a wimpy pastel colored one. I would actually suggest NOT making it of that thin material, as the sun shining thru really thin fabric really wimps out the color. If you PM me I can suggest a fabric that is better. A bit heavier, yes, but more opaque for the color presentation. Also, I doubt anyone can embroider the stars that big - and certainly not on material that thin. Usually have to have a heavy adhesive backing to embroider thin stuff. If you want to keep it light, skip the embroidery stars and have white stars by some other means. Please PM me. I might make one for you. Appx 15 x 25 to 16 x 28 range (have to calc the proper proportions) will give you the square footage you want. Skydiving demo flags that are towed are proportioned to be longer than flags flown over buildings. Flags flown over buildings- retrofitted to skydiving - usually look too rectangular. Also, a shorter leading edge is obviously to the skydivers advantage. Small American flags that are retrofitted for skydiver use "casket sized" 5 x 9 dimensions, and not the usual "front porch" flags size of 6 x 8. The 6 x 8's look too rectangular when towed. I have made and flown my own 12 x 24 flag in many demos with "F111 type" (thin nylon cloth for the red and white stripes) for many years. For the 12 foot leading edge It could (should) be longer. If I had it to do over I would change the dimensions and the fabric. PM me if you would like to discuss.
  3. dpreguy

    Toggle fire mechanics

    Timski - you need shorter toggles. Having to lunge up to get them, when time is of the essence, is a tell.
  4. Yeah - the sleeve could have been secured by Velcro.
  5. Yes, I saw one. (Rodriguez rig without hardware for chest and leg straps). It had (pretty sure), flat pieces of smooth aluminum, pretty long, (not plastic) that slid inside of the leg and chest straps. You slid the aluminum insert along until the strap fit you, then folded it back and secured the insert by laying it flat and "locked" it in place with a fabric sleeve of some type, and the sleeve was secured by elastic or friction or something.. (this was 40 years ago) Pretty cool idea - actually. Never saw it jumped, and don't know whether it would have held; but that guy was a thinker and an innovator.
  6. Buy a Mohoc camera. Maybe it's called Mohawk - whatever. t's called - it's about as snag proof as can be mfg.
  7. dpreguy

    Electric jump plane

    What guilt trip?
  8. dpreguy

    THC & Dropzones

    "…while state law largely trumps federal law in most contexts..." . Nope. Bad info.
  9. dpreguy

    Who's going to PIA?

    Who is going? One group of attendees are riggers seeking the "Continuing Rigger Education" certificate for attending the required number of hours of rigging related seminars. For starters. Also, riggers who dislike knowledge stagnation in this technological endeavor - known as rigging- who like to keep up with the latest innovations in equipment and who benefit from the knowledge in the seminars.
  10. So Yuri. You'd be a happy customer buying a counterfeit copy of someone's invention. And you see nothing wrong with copying someone else's invention and using for yourself. Wow!
  11. The term "Reverse Engineering" is wordsmithing to cover what it really is: Stealing. If one's intellect and design skills are so poor that they can't make a product of their own...well, I guess they just steal from the guy who did. And to make stolen copies and sell them?...shame on you.
  12. Hookenswoop is correct. The installation must be noted on the data card, the rig re-sealed. Although it can be done that way, it is a very bad practice. This new rigger is now the certifying rigger for this assembly and assumes all responsibilities for it. The new rigger is now responsible for everything inside that reserve pack … and any other defects on/in the rig, because when the new rigger records the info and puts his seal on it, it was that new rigger's responsibility to thoroughly inspect the entire assembly. Including the main parachute if it is still attached. Say the main parachute is installed backwards or a riser is twisted or the main is not airworthy... or there is something about the H/C that makes it not airworthy. If the main was attached when the "just installed the AAD" rigger got it, or the H/C is not airworthy this new rigger has just signed on to take responsibility for everything. Can the new rigger argue that he isn't responsible for all of the other things? Yes. He can argue that. Can the new rigger argue that he is not responsible for inspecting the entire assembly? Yes, he can argue that. "I just installed the AAD. How was I supposed to know the other things were not routed properly or were not airworthy?" Yeah, go ahead with that defense; but not inspecting the entire rig, including the main, if it was attached, is an unethical and whiny and losing argument. Although it is rare, survivors can sue. I'd hate to be in that chair when the fingers are pointed. And even if you beat the legality...I'd hate to be that rigger when other skydivers talk over the campfire about how you gave an unairworthy rig back to the jumper and he went in. All the while you are defensively repeating, "I just put the AAD in and I never looked at anything else...How was I supposed to know all the other stuff wasn't good? etc". Yeah - right. Ethics are just an academic subject, and a rigger's responsibilities are just words; until the consequences fall. Never do this.
  13. dpreguy

    Fingertrapping 550 cord?

    Sheath diameter of 550 cord is too small to eye splice/finger trap 550. I would say that the only way to create a reltively smooth eye splice in 550 is to mimic the usual sewing stitch - the double throw ziig zag stitch. It is used above the "L" bars on parachutes, but only as a back up to the usual clove hitch or double half hitch on the "L" bar. If you use the "joint efficiency" formula in Poynter I, I guess you could use the double throw zig zag stitch using E cord/thread (8.5 lbs) and sew the required number of stitches to equal 550 lbs. 68 or 69 full double throw zig zag stitches. And the zig zag stitches would have to be wide enough to bite into the whole 550 cord - not just the sheath. Just guessing here. Haven't tested that. Works on paper anyway.
  14. dpreguy

    a question about old cutaway systems

    I never heard of an R-2. But...I have many jumps on a rig with R-3's. Basically just a standard metal Capewell riser hardware holding device which replaced the "two shot" and "shot and a half" release covers. It was pretty nifty and was used for a quite a while (by all of the "cool jumpers) (such as myself ha ha) before Bill Booth's 3 ring - which replaced the Capewell base hardware entirely. The R-3 was just fine, but it did require your releasing both/each sides. Of course the 3 ring was vastly superior and as soon as it came out the R-3's disappeared quickly. Since the R-3 was built to release from a military style Capewell "base" the 3 ring required a new harness design. The military harnesses went out the window very quickly. Not a bad thing.
  15. dpreguy

    Falling out of a Harness

    I recall Bill Booth's *comment from years ago, "There is no safety feature that can't be defeated". *Came from memory: I think I got that right.
  16. dpreguy

    Good skydiving songs

    "Hey Freak Brothers" by the Booze Brothers And, check out the songs in the movie "Skydive" ("I want to Skydive")and the main song in "Wings" movie. These are the only actual skydiving songs.
  17. "Banana type"? Rather then make up a wierd term it wold be better to use accepted nomenclature: chest mount.
  18. dpreguy

    pd pulse

    Uh "less than stellar flare". I'll say. Only half the flare power you need/expect. It is a dud. Use it for a car cover.
  19. dpreguy

    2017-18 Wings

    Split bag is wonderful!
  20. Yup remwa, djl and wendy are correct. Whatever it is going to be, it should be predictable. Yes, find a safe place a long ways off if you are caught up in a tricky situation.
  21. For the "First man down" idea to work, that first man down has to fly a long-enough pattern that allows those above to see which direction he has chosen to land. Frequently, the first man down has a small canopy and knows he is not accompanied by other jumpers under canopy - so he goes "this way-that way- whatever way" until about 300 feet off the ground. Then more or less swoops, usually a 90 degree turn to final and then lands. Only when the jumpers above see that final decision can they set up for the load landing direction. Sometimes they are not that far above. Then by the time the hotshot decides to turn on final, (He is of course at 90 degrees to the wind line -which allows him to choose - right or left) (?will it be a 90 degree turn to the left or the right? No one knows- everyone above is guessing) Result? The jumpers above are in difficulty trying to set up to the to the direction, some so low they are 180 degrees off, seemingly decided at the last few seconds by the hotshot 'first man down." My point here, is that the first man down has to fly a reasonably long approach to make the "first man down rule" work. Jerking right or left on a 90 degree final approach swoop leaves those above guessing and adjusting at pretty low altitudes. "Which way is he going to go?" doesn't cut it. Yes, this happens. A lot.
  22. dpreguy

    Descendent with jumpers

    I have wondered the same thing - as in the original poster's question. It is obvious that this question does not present itself above the arming altitude of your AAD device 1000 feet....1200 feet uh...1400 feet....what ever the device arms at. But, his question is still lurking. BELOW the arming altitude how fast must the airplane descend for your AAD to fire? So, distilling the math (in my head) and seeing that most (OK not all) of the devices are arming at 78 miles per hour descent rate...wow!- the airplane would have to almost be "standing on it's head" to achieve a 78 mph descent rate. At that point, and at that altitude (below 1200 feet for example) the pilot better pull off some miracle to recover from a 78 mph descent rate. A rate I would compare to being in a helluva dive. Tell me if I'm wrong here, but it is my conclusion that below the 1200 foot or 1000 foot AGL altitude an airplane would be in a "ready to crash" mode to have a 78 mph descent rate. So, I am not inclined to worry about an AAD fire below 1000 feet; even if the pilot is descending so fast as to float me to the ceiling! At 1000 feet and below, that would (as Wendy more or less said) be an airplane in big trouble.
  23. dpreguy

    T-10 Cargo Parachutes

    I have two, but they are modified as "9 TU" s. Interested?
  24. dpreguy

    Lost art of flat packing

    I think that honor goes to Jeff Jonston
  25. I have "flown" one at PIA for two and maybe three meetings. Multiple times. It just gets better. They keep improving it. Oblelixm is correct, The sport evolves and training evolves and get's better. It is such an improvement (80's 90's) holding 11x 14 photos over the student's head while in a hanging harness. then USPA came out with videos-better... VR is just a modern evolution. It is the best way. Give it a chance. See if it can be done economically in some form.