FallRate 0 #1 December 10, 2002 There was an article in the recent Parachutist about a detachable D-bag and slider for high performance canopies. Essentially the idea is to increase the performance of the canopy for serious swoopers. I was thinking...Couldn't a jumper (in competition or whatever) use a direct-bag and static line to get rid of the drag from the d-bag and pilot chute, without having to deal with the complexities of the detachable system? Of course it doesn't deal with the slider, but that would seem to be much easier to deal with as a detachable item. FallRate Quote Share this post Link to post Share on other sites
AggieDave 6 #2 December 10, 2002 A sub-terminal static line opening is a scary thought on canopies like that, though.--"When I die, may I be surrounded by scattered chrome and burning gasoline." Quote Share this post Link to post Share on other sites
skymick 0 #3 December 10, 2002 Check out www.performancedesigns.com its called a RDS (Removable Deployment System) Quote Share this post Link to post Share on other sites
nacmacfeegle 0 #4 December 10, 2002 "A sub-terminal static line opening is a scary thought on canopies like that, though. " Slam, spin, spin,Plus, who wants to s/l anyways? AND you'd have to wait for the plane to land before you can pack the thing, so no back to back loads doing hopnpops all day....AND the performance advantage is limited to those already squeezing everything out of their canopies, and even then it is minimal..... I can't see the idea (static line) taking off.... -------------------- He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. Thomas Jefferson Quote Share this post Link to post Share on other sites
cobaltdan 0 #5 December 10, 2002 you do not really want to static line competition canopies. plus then you couldn't geak the camera with freestyle exits. in the past, we have simply made very cheap freebags for competition. in bright orange with a small amount of shot sewn in so they dont drift to much, as such they are usually easy to recover but if you loose them so what.... imo its the simpliest solution, no extra procedures, no added malfunctions do deal with in the air... sincerely, dan<><> www.extremefly.comDaniel Preston <><> atairaerodynamics.com (sport) atairaerospace.com (military) Quote Share this post Link to post Share on other sites
gus 1 #6 December 10, 2002 Quote plus then you couldn't geak the camera with freestyle exits. LOL, you're so right. the importance of geeking the camera! GusOutpatientsOnline.com Quote Share this post Link to post Share on other sites
sdctlc 0 #7 December 10, 2002 http://www.performancedesigns.com/hotnews/RDS/rds.htm Should take you to the PD page that has the info on the RDS Scott C."He who Hesitates Shall Inherit the Earth!" Quote Share this post Link to post Share on other sites
PhreeZone 20 #8 December 10, 2002 Precision has had the Beezy Bg around for a long time testing their reserves so its really not that new of an idea. A simpler idea is just to use a brown paper bag like a grocery sack to static line the main out of a plane. Have a buddy hold the bag and all you have to do it toss it in the brown bag and carry it out to the plane like that. And yes... the brown bag deployments have been done a lot of times already.Yesterday is history And tomorrow is a mystery Parachutemanuals.com Quote Share this post Link to post Share on other sites
sdctlc 0 #9 December 10, 2002 QuotePrecision has had the Beezy Bg around for a long time testing their reserves so its really not that new of an idea. A simpler idea is just to use a brown paper bag like a grocery sack to static line the main out of a plane. Have a buddy hold the bag and all you have to do it toss it in the brown bag and carry it out to the plane like that. And yes... the brown bag deployments have been done a lot of times already. I think this is similar but different for two reasons. 1st is that the removable D (actually modified Free)Bag allows for a freefall so you dont have a subterminal opening under the highly loaded swooping canopies being used. Terminal or subterminal is of course up to the individual jumper. This adds choices to the user as to his or her preference of exit (terminal or sub terminal) and takes out of the equation the need for an attachment inside the plane or a guy that has to hold the "brown bag". As someone else also noted it allows for a "Freestyle" exit. 2nd and probably bigger difference is the fact that the system allows for removal of the slider once under canopy.... Scott C."He who Hesitates Shall Inherit the Earth!" Quote Share this post Link to post Share on other sites
diablopilot 2 #10 December 10, 2002 Be aware that using a bag that is not attached to the normal bridal attachment point (i.e. the top skin) can produce "interesting" openings, especialy if you choose to wrap the tail of the canopy a lot. I've made a removable P/C and bag mod on one of my Xaos canopies just to see what all the hype is about, and the once the canopy is out of the bag it takes a while to unfurl the tail. When hooked up in a normal configuration, the collapsed P/C and bag provide enough drag to start lifting the tail off the pack job. In the removable configuration the bag comes of and you're left looking at a nicely coccooned pack job... a lot of posibility for an off heading here... I've found a perfomance increase but not enought to warant dealing with openings like that all the time.... maybe just for competition.... Food for thought Have fun, -jp----------------------------------------------- You're not as good as you think you are. Seriously. Quote Share this post Link to post Share on other sites
Rdutch 0 #11 December 12, 2002 Joey Jones, has done the direct bag idea in competition a few times. He unnattatched his canopy and had Doug Parks hold his pilot chute on exit. He said he never had a problem with the opening's either. I wonder, as my Velocity doesnt like sub-terminal opening's. But for competition it's worth a try. Ray Small and fast what every girl dreams of! Quote Share this post Link to post Share on other sites
SkymonkeyONE 4 #12 December 13, 2002 The problem with SL/direct-bagging a canopy is that unless you are written down as the "last out" in your group of four (the standard competition pass), you can't just dump out the door. Opening altitude is sorted out by wingload, with the highest wingloaded person going out first and burning it down, this in order to set up a nice stack. Dump high and crowd the people after you and you hose them completely. I have experienced this several times in competition; having someone pulling high, then dicking around with their bag, then hanging in brakes causing a rejump for myself and the guy behind me. Sometimes we make concessions for these people, but when the aircraft also has fun jumpers or students aboard, we will get out in groups of four in climbing passes. If you are out last on a pass that gets out at 5500 and you dump right out the door, then the first guy out on the next pass will likely burn it right past you to the pre-declared pull altitude. This, of course, REALLY fucks things up. That has happened at at least two meets I was at in the past year. Personally, I prefer the "throw-away" d-bag and pilot chute that Dan talked about earlier. You can dump where you are supposed to, then if you can find the d-bag/PC, great. If not, then so what. You really only need it in Distance and possibly Speed runs anyway. Chuck Quote Share this post Link to post Share on other sites
