freakydiver 0 #26 June 26, 2003 Christ and I'm thinking about getting into BASE? I'm just not smart enough me thinks... -- (N.DG) "If all else fails – at least try and look under control." -- Share this post Link to post Share on other sites
hookitt 1 #27 June 26, 2003 QuoteChrist and I'm thinking about getting into BASE? I'm just not smart enough me thinks... And what exactly makes you think we are? -My grammar sometimes resembles that of magnetic refrigerator poetry... Ghetto Share this post Link to post Share on other sites
base689 0 #28 June 27, 2003 > Christ and I'm thinking about getting into BASE? I'm just not smart enough me thinks... Dude, do not think that all the things we know are only a "product" of ours. It took us a lot of studying through the Internet, studying from climbers, from friends that can give you an answer, from friends that have done it before, and once someone has figured it right and tried it on field, it becomes "the law" and we move on from there... ...still in time to revise the consolidated practice if in case!!! Otherwise, we do not invent any more and we do that particular trick all the time as before!!! What works well MUST NOT be changed!!!! And we pass it to our friends!!! See the case of alpinism/climbing: all the techniques/tricks/equipment you need to know/use for 99% of climbs are already known and very well consolidated from pratice: we simply need to ask to the right people to pass you on the right information. No need to invent anything unless you want to do something really new/strange. Internet has been the "great normalizer": once a practice/trick/habit/whatever is well proven that works, it can passed to ALL THE WORLD (=our worldwide community)!!!!! That's what the forum in Internet are made for!!! Stay safe out there Blue Skies and Soft Walls BASE #689 - base_689AT_NO_123_SPAMyahoo.com Share this post Link to post Share on other sites
motherhucker 0 #29 June 27, 2003 I THINK WE SHOULD ALL MAN UP AND FREEFALL THE FUCKING THING. What a bunch of pussies we are. Share this post Link to post Share on other sites
base689 0 #30 June 28, 2003 > What a bunch of pussies we are Yeah, I thought we are something about that.... ...nobody is perfect...Stay safe out there Blue Skies and Soft Walls BASE #689 - base_689AT_NO_123_SPAMyahoo.com Share this post Link to post Share on other sites
base311 0 #31 June 28, 2003 heh heh... okay... I'll watch you and if you do okay I'll be right behind you. gardner Share this post Link to post Share on other sites
sum1sneaky 0 #32 June 29, 2003 I agree that spectra is very strong and abrasion resistant material - however, I think gemini cord would be more appropriate for this use. Gemini cord is very thin, but very strong (kevlar and spectra combination), and is pretty stiff - which I think would allow for a more fluid torque around the point of attachment than the more floppy spectra sling. I think gemini cord also shows superior edge cut protection/resistance so you wouldn't have to worry so much about angle iron etc... just my 02cents sum1 Share this post Link to post Share on other sites
sum1sneaky 0 #33 June 29, 2003 they sell gemini cord here Share this post Link to post Share on other sites
DexterBase 1 #34 June 29, 2003 You can buy gemini cord at any REI or climbing store. I like the sewn spectra slings because there's no knots to snag on. The double or triple fisherman knot used to loop gemini cord (like when you thread larger hexes) can be a pretty good snag point if you don't pay close attention to where you place the knot. Also, gemini is pretty slippery and if you're unfamiliar with the proper knot to use, your loop can fail. A sewn and rated spectra sling doesn't have these problems. I don't see how gemini cord would offer any advantage over a spectra sling. Share this post Link to post Share on other sites
DexterBase 1 #35 June 29, 2003 Hey 689, I went back to the proverbial drawing board and this is what I came up with. It's super clean but would require a rigger to construct it. I like it, let me know what you think... Share this post Link to post Share on other sites
andy2 0 #36 June 29, 2003 would looping JUST break cord and no sling be bad in someway I guess? The point of the sling is to do what? Distribute the weight evenly or some such? Sorry this may be a really dumb question --------------------------------------------- let my inspiration flow, in token rhyme suggesting rhythm... Share this post Link to post Share on other sites
DexterBase 1 #37 June 29, 2003 The breakcord is the weak link in the system and you want to protect it from the object itself. You need the breakcord to part at 80 pounds to ensure a safe deployment. If you're on a low jump and the breakcord parts before the canopy is at line stretch (or even extracted........ chills...) you're done. If you loop the breakcord over a handrail with a sharp edge or a piece of angle iron, your static line could break at a much lower tension. Share this post Link to post Share on other sites
andy2 0 #38 June 29, 2003 ok, i knew i wasnt thinking that through at all thanks --------------------------------------------- let my inspiration flow, in token rhyme suggesting rhythm... Share this post Link to post Share on other sites
sum1sneaky 0 #39 June 30, 2003 QuoteI don't see how gemini cord would offer any advantage over a spectra sling. The thought I had - which I didn't really explain - is now absolved by your latest drawing, at least during the breaking of the break cord stage, by the lack of the pulley effect - in the older version, the stiffness of the gemini cord would help it to experience a lower coefficient of friction when coming around the object, at least less than a spectra sling. the spectra is so supple, that it likes to create sharper angles than something that cannot be bent upon itself as easily. It also has more small pile like fibers that will interact with small irregularities of the object causing higher friction coefficient as well. gemini cord has edge cut resistance far superior to spectra - so that was one more thought on how it has less friction around the point. however, i agree about the knot being super snaggy... that would certainly suck to be left hanging there! Maybe the know could be minimized to a water knot and hid inside the bridle attachment point... but this would be only for the first drawing. For the second drawing, it would be much more difficult to construct gemini cord... and I think this latest drawing looks like a much better system. In the modified drawing, the friction factor doesn't need to be considered until after the break cord has broken - at which point you just have to worry about the bar tacks snagging the object attachment point - or, I guess, rig it in a loop to avoid the blocky bar tack. Another option might be to use dacron or some sort of kelvar kite line that can be fingertrapped and sewn closed - much like toggle settings etc... - this might help create more snag-proof loops like you'll need for the latest design. Good thoughts dexter, Cheers! Share this post Link to post Share on other sites
base689 0 #40 June 30, 2003 > Hey 689, I went back to the proverbial drawing board and this is what I came up with. It's super clean but would require a rigger to construct it. I like it, let me know what you think... It is a very good design indeed. I really like it. Provided there is ENOUGH slack for the "fixed" part of sling (to bridle) with respect to break cord loop, that in this case is going to break at 80 lb - 36 kg. The other remark I would like to point out is that, once on the object/handrail/fixed point on structure/whatever, you must do a good thinking about the "free" end of spectra sling that, after break cord failure, is going to pass around "fixed point". This "free end" is going to pass around "fixed point" and clear itself with a whip stroke, so you must be absolutely sure that with such a whip stroke it DOES NOT touch any other part of structure, possibly hanging up/entangling anywhere (but this possibility exists with ANY design involving taking with you break cord/static line). One very last remark: why use (exclusively) spectra sling? What about using 5.5 mm - 1800 kg dyneema climbing rope? Or similar rope? The loops, in this case, can be made with suitable knots, even if a rigger with proper sewings could do a cleaner job. Still being very careful about knots/thickenings (because of sewing) on the "static line" NOT hanging/entangling anywhere because of the whip stoke. My compliments indeed, Dexter, I think your design, with possibly small modifications/personalizations, could be the set up to go!!!! Stay safe out there Blue Skies and Soft Walls BASE #689 - base_689AT_NO_123_SPAMyahoo.com Share this post Link to post Share on other sites
Faber 0 #41 June 30, 2003 Dexter.. i think you should hurry up and get patent on that one im looking forward to see if you make some video that shows it in action Stay safe Stefan Faber Share this post Link to post Share on other sites
DexterBase 1 #42 June 30, 2003 I have no idea how to go about getting a patent. I think one of the manufacturers would probably be able to make some money off of it though. If they sold these I would have bought one a long time ago. Maybe they'll have some input. Share this post Link to post Share on other sites
Faber 0 #43 June 30, 2003 you could ask Tom to delete your pics then sell them to the manufactors well i dont have a copy ...yetbut i doubt you gonna delete it before i have downloaded the pic Stay safe Stefan Faber Share this post Link to post Share on other sites
rfarris 2 #44 June 30, 2003 Just wanted to say THANKS to all those who have posted and offered advice to my original post. On a side note, how and where is 80lb BREAK cord advertised? Where do I find it? ParaGear? WalMart? cya Rod Share this post Link to post Share on other sites
andy2 0 #45 June 30, 2003 vertigo sells break cord by the yard (I dont know what the specs are on it): http://www.vertigobase.com/html/prod_pricelist.htm --------------------------------------------- let my inspiration flow, in token rhyme suggesting rhythm... Share this post Link to post Share on other sites
Hooknswoop 19 #46 July 8, 2003 This what you were thinking of? Dacron and 1000 lb Vectran. Hook Share this post Link to post Share on other sites
DexterBase 1 #47 July 9, 2003 That's awesome! Wanna sell me one? Share this post Link to post Share on other sites
base689 0 #48 July 10, 2003 It's a fantastic set up, Hooknswoop!!!!! Not to put your idea/work down, but the only downside of your sling is that, being made from dacron/spectra parachute line, yes, it is very robust but it is NOT abrasion resistant. And, being so small and NOT abrasion resistant, I see that thing not working very well in a set up where the handrail/whatever is sharp/sharp edge/small metallic protrusion popping out of surface/whatever. In the long/medium term, the dacron/spectra sling is going to have a smaller section due to abrasion suffered with contact with metallic surfaces. My small contribution: why don't you manufacture EXACTLY the same set up but using a, let's say, 4 mm dyneema climbing rope? It's got a 750 kg - 1653 lb Break Load, and, more important than that, its sheath is MADE FOR resisting to abrasion (being made for the alpine environment to be dragged around all over the rocks). I already manufactured "your thing" using such a 4 mm dyneema rope, presently creating the 3 loops with knots (not jumped, ...yet...). Yes, indeed, it is a much smarter idea to have the 3 loops sewn by a rigger using inserts and whatever, so having a much thinner appearance. I shall try to have it done more properly by a rigger. I shall let you know.Stay safe out there Blue Skies and Soft Walls BASE #689 - base_689AT_NO_123_SPAMyahoo.com Share this post Link to post Share on other sites
Faber 0 #49 July 10, 2003 QuoteI already manufactured "your thing" using such a 4 mm dyneema rope, presently creating the 3 loops with knots could you post a pic? Stay safe Stefan Faber Share this post Link to post Share on other sites
Faber 0 #50 November 27, 2003 BUMP Im WERRY interested in this Carry-on SL How much has been tested? does any have the messurements i´ll need to make one. pro´s and con´s please Thanks Stay safe Stefan Faber Share this post Link to post Share on other sites
