OldGregg

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Everything posted by OldGregg

  1. OldGregg

    Trolling speakers corner

    While I think everyone can agree that censorship is generally bad, no one likes having garbage on the forum either. And of course "one man's trash is another's treasure." But if there is a problem poster, that a number of people similarly think is a problem poster, just talk with each other, and concertedly ignore them completely, and ignore any comments referencing them completely; the problem will fix itself after that. A democratic solution as it were. But if people knowing full well that the poster is a problem continue to engage them, then you only have yourself to blame.
  2. OldGregg

    EpicenePro

    I'll second that. They basically threw away everything else to make the opening more stable, which seems to be a newbie issue more than anything. Then I also know 3 ppl with Outlaws, they all hate them. SQ makes the best WS's in my opinion, but the canopies are sub par.
  3. I agree Jerry, if it is just to have some fun and learn something then by all means go for it. But I think he is trying to make an economic argument, that at least to me, doesn't hold water.
  4. Legality aside, because clouds and the FAA, lol (at least in the US). I also doubt much of anything WS related is patented. But let's just ignore it. You're making a lot of false assumptions. 1- Almost no sponsor is paid, and almost none get free gear, they usually get demo gear or dealer pricing on gear (I know several sponsored folks, dealer pricing is pretty standard). Also on the return dealers are getting, I wouldn't be surprised if R&D, setup, quality control, etc all ignored, a $2,000 WS from say SQ doesn't cost them close to $1,000 (or more) to build. 2- Some shop in Vietnam is willing to take on a complex project to sell a handful of units, with only one guaranteed. You won't find one willing to do that. They make money, they don't take on tinker projects with almost no quantity and poor return. 3- I know someone who has tried to reverse engineer a WS just for fun as a tinker project. It is a royal PITA. If you value your own time at $10 an hour, not worth it. Basic construction is easy, but these aren't old 9-cells where every cell is the same. Almost every surface has unique curves. 4- Which brings me to my next point, even if a manufacturer sent you all the cut pieces with instructions, it would be a royal PITA to put it together, even for a rigger. Material stretches under the needle, sewing is an art, and knowing what you're sewing and how it will react is a very big deal. Even with match marks, unless you've done it a lot, by the time you get to the end of the seam, they won't line up anymore (curves are the worst; and WS have abundant curves, like almost every seam would be a continuous curve). At best you'd end up with a shitty copy, and you'd have put more money and effort into it than it is worth. Also, wtf are you doing to your WS? I've put hundreds of jumps on PF, SQ, and Tonys, with minimal wear and only ever sent one in to get a tiny patch (old S-Bird). I've even seen all the coating peel off the inside of suits after 1,000+ jumps before blowing any seams. I would estimate the useful life of a modern WS at 1,000 jumps easily. And if you're making 1,000 jumps a year and burning $20k+ on jump tickets, yeah ok you might have to shell out 2k on a WS every year too. But if you jump that much, get sponsored and get that dealer pricing and shell out $1.4k...
  5. OldGregg

    Altimeter Options for Wingsuiting?

    Nice! One step away from a HUD. Depends, how much do you trust your audible and your eyes? I use a BH mudflap too with a Altitrack, but like was previously mentioned, I probably only look at it once or twice. I have an audible set at 8, 6, and 4k (also 3 but that is my hard deck). 8 is find the DZ and make sure you can get back, 6 is start getting lined up for where you want to pull ("turn on final" (or final-ish) if you will; and 4 is start deployment flare. Works pretty good for me, I also have a Viso wrist mount but can't see it in freefall (at least not without destroying my body position; in extenuating circumstances I could take a peek). I've loaned my chest mount out a number of times and flown audible only, not too weird, only pulled high once because I missed my 8k tone so assumed my audible quit on me (ended up pulling visually at like 6k, knew I was high but wasn't sure how much).
  6. OldGregg

    Deployment Techniques

    Very similar experience here too and I agree 100%. Started getting unstable during a terminal reserve deployment. Did a whole jump after that just touching my handels, 1 at a time, both at the same time, PC, etc. I'd also stop at the hand-on-PC stage during deployments for a few seconds for a number of jumps after that and just fly it. Felt a lot better about it after some practice.
  7. OldGregg

    Deployment Techniques

    Kinda been beaten around the bush a bit but basically it comes down to what are you trying to do and what is likely to go wrong. With students, you teach them to start collapsing stuff basically to get super stable because you don't want them to roll or pitch head down when they pull. (I rolled once flying a suit too big for me; and I watched two different people pitch head down, suit was fine they were just new). So a "good student flare" is not necessarily a "good experienced wingsuiter flare," but as long as you aren't having problems, do whatever you want. So to answer your question, you have to specify who is pulling and what is their biggest concern? After a while stability isn't an issue anymore and you don't care about collapsing things or having a "wingsuit friendly" main for instance. E.g. Backfly deployment guy like 2 comments up. Personally I like max flare because it is soft; like softer than a hop and pop, so I fly>flare>pitch>go back to flaring. Arms and legs are mostly straight the whole time "It's all in the hips/shoulders." Anyway, I wouldn't recommend that for someone who stability might be a problem for. But someone who isn't worried about stability and wants a softer opening, then yeah, give it a shot.
  8. That was kinda rough to see play out reading through it. Clicked on his profile and there was a DA profile link. Post from about a year ago shows him still in a wheelchair and another at the same time of someone (him?) standing at a scenic vista with the title "dreams." Not sure if the allusion to standing was the meaning of the title though. Makes me feel less bad about the folks I've seen get chased away from the sport for doing the same stuff. I for one would rather be shamed into exile from skydiving than end up violently crippled.
  9. OldGregg

    Swift 3?

    Many outdated suits still work fine. I think very rarely is the latest generation needed to do what one wants. Agreed, I would just stay away from buying ancient stuff like a Skyflyer. You'll just want to get rid of it after like 10 jumps.
  10. OldGregg

    Swift 3?

    Agree 100% Just just btw, I would find something cheap to start with if you're jumping a lot (i.e. used). You'll probably want to change it within 100 jumps (or less than 50). If money is no object, then sure get a new whatever. Also, anecdotally, although I do love SQ's big suits and am jumping one now, I didn't care for the Swift or Funk over their Tony or Phoenix competition. They weren't "bad" I just liked the R and S Bird and the Phantom and Ghost/Havok a lot more. IMHO the best all around first flight to 100 jump wingsuit is the Phantom3 (I havn't jumped the Phantom Edge(4) but it is probably very similar). The Phantom 2 is outdated, the P3 is still very relevant (just btw).
  11. OldGregg

    Container WS friendly

    The "stability" is due to an apex vent, or in the case of the SkySnatch a "central" vent (e.g. every other apex vented PC), the shape is designed to create more drag more quickly with a given OD "snatch force." As a BASE jumper I would hope you would understand this. Call SQ, ask them, and then when they explain that to you, you can apologize to me for wasting my time.
  12. OldGregg

    Tunnel Rigs and Skills Translating From Sky to Tunnel

    That's absurd, cite a source.
  13. OldGregg

    Container WS friendly

    I'm not
  14. OldGregg

    Container WS friendly

    Agree with all of the above except the SkySnatch. I get the "deploy as fast a possible" in the BASE environment, but it doesn't make as much sense in the sky. I wouldn't characterize the SkySnatch as "bad" but it is "unnecessary" and has a couple drawbacks. 1- It is $200, basically double the price of most other kill-line PCs, and 3x the price of the cheapo ones. 2- Harder on gear, faster/harder extraction = more force being transmitted into everything from the PCA to the risers, it might even mean less life in the PC's ZP itself. Fine for BASE because 100ft might be life vs. death, but that isn't the case in the sky unless you're already in a pickle (should probably go straight to reserve) or you do something stupid (pulling dirty low or jump a huge suit with a 6' bridle). 3- It makes some assumptions that a faster/harder extraction is more stable, in a free packed BASE main with a tail pocket and a BASE container that basically completely comes apart on deployment (compared to a sky container) ok sure, that might be true. But when extracting a d-bag with line stows (even semi-stowless) from a container that is more restrictive, maybe not, fast and violent might mean more chaotic and more force thrown into a rotation of the bag. I do appreciate the wind tunnel stuff and comparison vids SQ made, but they are non-empirical/leave out a ton of variables and are relatively anecdotal. I've also seen plenty of back facing vid (mine included) with significant PC oscillation and a completely straight extraction with completely symmetrical inflation, PC oscillation does not = unstable extraction with a main that is in a d-bag. Case in point, CRW and swoopers haven't jumped on it (figuratively speaking), and their deployments are arguably less stable / more nuanced than WS ones, if it was a significant improvement, they would have switched over. 4- It packs big, again not a problem with BASE BOC's but sky BOC's are a good bit tighter. And there are no options for handles other than their cf tube and no tuck tab if you're into those. Again, it's not a bad thing, just unnecessary in the sky.
  15. OldGregg

    Container WS friendly

    Well the Aurora has been discussed here, the consensus seemed to be, some improvement for performance speed comps, otherwise nothing to write home about. [url http://www.dropzone.com/cgi-bin/forum/gforum.cgi?do=post_view_flat;post=4833167;page=1;mh=-1;;sb=post_latest_reply;so=ASC]Link[/url] If you're just talking "fun jumper" they pretty much all work well. Some mods that seem to be pretty well agreed upon as "beneficial" are 9-11ft bridle, stowless/semi-stowless bag, and open ("dynamic") corners for the main tray. Other than that, just FF friendly, and a RSL with a MARD/SkyHook etc if you swing that way. I've wingsuited a Mirage, Vector3, and even a Student Vector, no complaints related to WS specifically on any of them. I've seen just about everything else out there wingsuited with no WS specific complaints. The only rig related complaint I really remember anyone making was a freefly pud on a tiny overstuffed rig and giant suit combo, jumper said it was hard to get a good grip on the pud. (Oh, and getting a finger stuck in a homemade PVC handle).
  16. Way to be awesome Gabe, but like other people have said "You're telling me a highly litigious for profit company with a reputation for questionable business practices and treating their employees less than awesome isn't into added liability (getting sued costs money, even if you win) and someone else independently organizing events at their facilities?! Color me shocked..."
  17. OldGregg

    Altimeter Inaccuracies?

    Basically his argument is that 5 seconds from pitch to inflation shouldn't = a 1,000ft loss in altitude, as that would be an average of 136mph vertical. I saw a video, good camera angle, deployment is at most 5 seconds (have to take his word on the altitude readings though). He thinks (reasonably so) it should be more like 500ft rather than 1,000ft. It is an interesting point and either the snivel is near terminal the whole time (he doesn't think so), or the altimeters (analog & digital) are giving false readings, likely being burbled or something. Or I guess some other weird atmospheric phenomenon at his DZ, but that is getting pretty speculative and almost impossible to verify w/o a plane and some fancy equipment. Only way to really verify if it is speed of snivel vs. altimeters being wonky would be to use a GPS like an FlySight that is indifferent to barometric pressure.
  18. OldGregg

    Tunnel Rigs and Skills Translating From Sky to Tunnel

    Late to chime in here, but I did talk to a tunnel instructor who said he tried a rig in the tunnel (Paraclete) to see what the difference was (he was already a competitive VFS flyer in the tunnel and sky). He said it made "a little bit of a difference" and that it was most significant carving head down or in a stand at high speed. For static stuff I think he said it just took a few min to get use to it. Anyone who frequents tunnels a lot, do you still see people wearing rigs? Other than the military of course.
  19. OldGregg

    Vertical Videos

    I enjoyed the video on VVS and pic I was intrigued so read some articles. It would seem like there is a niche market for vertical videos but it is toward short clips and carefully controlled shots (kinda marketing centric). If you're shooting where the horizon and horizontal movement are important, then horizontal makes more sense. And in the sense of ESPN's VV SportsCenter broadcast, the audio is actually the content people are consuming, the video is just there as background entertainment. There is some use for vertical stills in pro photography, mainly shooting something very tall, buildings, mountains, etc. The only useful skydiving application I could see is for swooping, to keep the ground in frame the whole time, but again, would require a carefully controlled shot. Or, if you had a very tech-savvy DZ (lol right) they could make a short mobile only clip (or vertical slide show) for advertising purposes. But that's about it. You'd need a market analysis on how most tandem vids are being shared (and viewed) to determine if there was enough demand for VV. But my guess would be FaceBook, so horizontal would be more relevant. For tandem stills you could always offer to crop a few for Snapchat or backgrounds if you wanted. All in all, I think the disappointment of having a VV on a TV or computer screen would outweigh the convenience of it for sharing on Snapchat for most customers at this point, and doing both would probably be more of a pain than most videographers are willing to deal with. As for the eyes thing, pupils have more effect on perception of V vs H, and ours are round. But our skulls do offer more peripheral than vertical angle of view, and it would make sense that our brains are more wired to perceive the world that way. If we lived in a world where we were being attacked by pterodactyls or falling into holes all the time, then things might be different. A common example are herbivores, goats, cows, horses, etc that have wide flat pupils; wide peripheral vision provides better predator detection (pterodactyls excluded). [url http://advances.sciencemag.org/content/1/7/e1500391]Additional reading[/url]
  20. OldGregg

    Altimeter Inaccuracies?

    [url https://www.altiforce.net/shop/]Here is the link [/url] It is it's own thing, plugs into a GoPro, creates a CSV file that auto plays with the video (as a "subtitle") or you can export the raw data into Excel or whatever you like. Looks like they have gotten more sophisticated since the first generation (what I have) but the basic model is the same price ($60).
  21. OldGregg

    Altimeter Inaccuracies?

    Agreed about the alti's and time calculation, and without a back facing camera would be very tricky. Also, if anyone cares enough to play with it or wants to make a decent graph I can send you raw CSV files from some jumps (you'll see the wonky altitude readings in freefall, the AltiForce is not buffered or smoothed).
  22. OldGregg

    Altimeter Inaccuracies?

    This is a neat little graph I put together playing with the Altiforce a long time ago (it also has a G sensor) anyway, it isn't perfect, but lets you see that deceleration during deployment isn't linear. Assuming the device is perfect (it probably isn't), the collection method is not. Helmet mounted (so head movement) and I aggregated the G force in all 3 axises (since precise head position is unknown). The results though were very consistent in the shape of the deceleration curve from jump to jump. Parts of the curve were matched with the video. First tiny bump is PC inflation/bag extraction, second bump is line stretch, big bump is inflation, artifacts after are canopy surge/turn. EDIT: Second chart is aggregate G force experienced, or "total deceleration" expressed as a % (it took several more seconds to return to 1 G after canopy inflation which it why it doesn't reach 100% in 5 seconds). Again, not perfect by any means, but the thing to consider is that in the 1st whole second about 15%, 2rd whole second 35%, and 3rd whole second, 65%. So deceleration doubles almost every second, you get almost as much in the 3rd whole second as you did in the 1st 2nd second combined. i.e. you're retaining speed longer that a linear deceleration and most of the actual slowing down occurs during inflation, not the snivel. Also, yes I threw this together really fast in excel, it isn't perfect, and the data collection isn't perfect. Just ball parking due to nerd curiosity.
  23. OldGregg

    Altimeter Inaccuracies?

    What canopy (size and model)? Short answer, use a GPS to double check your readings, if it agrees with the altimeters, your math is wrong (likely how much the snivel is actually slowing you down in the beginning), or your vertical speed is much faster than you think (I'm a big guy and my relaxed arch is about 140mph). There could be differences between freefall and canopy pressure due to airspeed moving around the altimeter or burbling the altimeter. For instance, AADs are set to fire slightly offset to make up for the burble they are in (like ~+300ft If I remember right). Also as an example, I've used a AltiForce GoPro altimeter (embeds altitude data in the video) when you watch the video, in freefall there is variation in the altitude, it even goes up sometimes, but under canopy it mellows out and agrees with other altimeters on the ground and in the plane. They just aren't perfect systems for ascending or descending rapidly; but more than "good enough" for our purposes. Which brings me to my next point, it doesn't matter beyond a "curiosity." From personal non-empirical data experience, I'm under the impression that a "brisk" deployment is
  24. Drop the flysight into either the wing or tail inlet before exit.
  25. OldGregg

    AloXs altimeters - Anyone using them? Opinions?

    He probably meant Protrack, L&Bs naming scheme for their products is not great; and their marketing makes me laugh sometimes (e.g. they have 4 different audibles that just subtlety increase in "features") and I'm not even sure why the ARESII exists, I've never seen one IRL. The only consistently negative thing I've heard about any of the Neptunes is that they eat batteries, but the folks I know who have them like them a lot. And the display is larger, if you usually wear glasses then that is something to consider.