I’m looking to get a short rope or two for canyons, and want to go with a light weight 8MM rope.
Any ideas on a good one?
When I’ve looked at 8MM ropes or cordage, the strengths seem to vary quite a bit. One I’m looking at has a strength of 14Kn, anyone know of a minimum recommended strength for rappeling on?
Thanks.
beadysee
— In Yahoo Canyons Group, “Tom Jones” wrote: > So even though it is small in size, it is very stiff.
Not, uhhh, gonna touch that one…
>Certainly those bogus teal traillines I had were pretty darn stretchy for a static line.
Unusually so.
My Espirit 6mm alpine escape rope is super stiff, too. Not so much the bouncy bouncy.
Brian in SLC
Tom Jones
But the core of the Canyon Pro is spectra – very static. So even though it is small in size, it is very stiff.
Nylon or Polyester ropes, yeah, the small ones are “less static” and the fatties “more static”. Certainly those bogus teal traillines I had were pretty darn stretchy for a static line.
Tom
— In Yahoo Canyons Group, “beadysee” wrote: > — In Yahoo Canyons Group, steve mestdagh Unfortunately I extrapolated that to all 8 mms w/o checking the > facts. Sorry.
Nahhh….yer good.
I’m tuned into dynamic ropes. That Canyon Pro is a pretty stiff > piece of cord. Strong as you’d ever need. My favorite canyoneering > rope by far.
Great cord for hauling on a wall too…hee hee…(lighter than most > haul lines, and way stronger). Good for fast and light, or, in my > case, slow and dark ascents…
I don’t have any handy numbers for the elongation of Canyon Pro > compared to, say, BW static II, access cord, trailine, etc. Anyone?
My bet is though, that a thinner static line would have more > elongation than a fatty, all other things being equal. Dunno, > though.
Brian in SLC
beadysee
— In Yahoo Canyons Group, steve mestdagh wrote: > Sorry for the bad info. I remember someone, who worked w/ Bluewater > people, telling me that the Canyon Pro was VERY static. Unfortunately I extrapolated that to all 8 mms w/o checking the facts. Sorry.
Nahhh….yer good.
I’m tuned into dynamic ropes. That Canyon Pro is a pretty stiff piece of cord. Strong as you’d ever need. My favorite canyoneering rope by far.
Great cord for hauling on a wall too…hee hee…(lighter than most haul lines, and way stronger). Good for fast and light, or, in my case, slow and dark ascents…
I don’t have any handy numbers for the elongation of Canyon Pro compared to, say, BW static II, access cord, trailine, etc. Anyone?
My bet is though, that a thinner static line would have more elongation than a fatty, all other things being equal. Dunno, though.
Brian in SLC
neil wilkinson
Again the 9.23 Blue Water is nice compromise of weight, quality and price. I have used some ropes I like better, but not for .60 a foot.
gajslk gajslk@worldnet.att.net> wrote:
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Dusty Goldscheider
Mammut makes an 8mm that is 15.5kn. A very important consideration of rappelling with thin rope is abrasion. Protect your rope to be sure of NO abrasion points (especially sharp ones!). I have found that 11mm and 10 mm low-stretch rope will withstand abrasion that will severely damage 8-9mm. Thinner ropes do stretch more under load which results in greater see-sawing effect, which in turn causes more damage. I would recommend sticking to the strongest and thickest rope you can get away with for its weight. your safety margin would increase if you maybe looked at 10mm – especially if is for shorter rappels. The weight saved by 8mm wouldn’t be that significant. If you are using 8mm, get the strongest and heartiest and protectit well.
Dusty
>From: “ryancornia” ryancornia@yahoo.com
Reply-To: Yahoo Canyons Group
To: Yahoo Canyons Group
Subject: [from Canyons Group] 8mm rope recommendations…. >Date: Wed, 11 Feb 2004 21:51:14 -0000
I’m looking to get a short rope or two for canyons, and want to go >with a light weight 8MM rope.
Any ideas on a good one?
When I’ve looked at 8MM ropes or cordage, the strengths seem to vary >quite a bit. One I’m looking at has a strength of 14Kn, anyone know of >a minimum recommended strength for rappeling on?
Thanks.
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steve mestdagh
Sorry for the bad info. I remember someone, who worked w/ Bluewater people, telling me that the Canyon Pro was VERY static. Unfortunately I extrapolated that to all 8 mms w/o checking the facts. Sorry. -s
— beadysee beadysee@yahoo.com> wrote:
> You’re of course, very wrong. Skinny ropes consistantly have more > elongation (stretch) than fat ropes.
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gajslk
— In Yahoo Canyons Group, “ryancornia” wrote: > I’m looking to get a short rope or two for canyons, and want to go > with a light weight 8MM rope.
Any ideas on a good one? > For short ropes, I grab whatever’s handy or cheap. I only worry about going skinny on long ropes. Depending on how hard you use them, rope life can be a lot shorter on skinny cord. If you are looking for new, you could try sweet talking your local gym owner. The guys here in town are willing to cut a piece off the spool and sell it at cost if they like you.
Gordon
beadysee
— In Yahoo Canyons Group, steve mestdagh wrote:
> I wouldn’t worry about the rope strength. I’d worry about the static > factor. Those thin ropes don’t give any leeway when rapping off a dicey > anchor. To put in in layman’s terms, there’s very little rope stretch, > meaning all the force goes onto the bush, buried rock or pebble jammed > in a crack.
Oh where oh where is Lard Schlime (from wreck.climbing fame) when you need him.
You’re of course, very wrong. Skinny ropes consistantly have more elongation (stretch) than fat ropes. Look at the latest gear guide from Climbing magazine and compare rope diameters to static elongation (or “active” elongation). When I’m on a tenuous ice lead, with dubius pro, give me a single 8.1mm dynamic rope… Probably transmits half the force to my protection in a fall than an 11mm dynamic climbing rope.
And, the force only goes “in” when there’s a load. Most of us, during our rappels, try to keep that load pretty constant.
I wouldn’t worry too much about the “strength” of an 8mm cord, as long as its a standard climbing or NFPA certified static rope and not polypro. Especially if you’re just looking for a shorter length. I’d think even accessory cord would be plenty strong enough in the shorter lengths (sub standard rope lengths of 50 or 60m).
Brian in SLC
steve mestdagh
Heya, I wouldn’t worry about the rope strength. I’d worry about the static factor. Those thin ropes don’t give any leeway when rapping off a dicey anchor. To put in in layman’s terms, there’s very little rope stretch, meaning all the force goes onto the bush, buried rock or pebble jammed in a crack. Now someone will probably pipe up to say that “Yeah, you need to be an expert to use dem skinny ropes”. True, but the experts also tend to push the dicey anchor game.
On a different note, made myself another canyon rope the other day. My old climbing ropes are sometimes retired into other uses before becoming canyon ropes. This one was used to winch trees directionally when cutting them down. i.e. like dropping trees close to my house or near power lines. My car got stuck in the snowy drive. Tooks some very serious tugging from my Landcruiser to get it up the drive. Not taking any chances w/ the dangerous tree winching so it’s now a canyon rope. Plenty of strength for rapping. -steve
— ryancornia ryancornia@yahoo.com> wrote: > I’m looking to get a short rope or two for canyons, and want to go > with a light weight 8MM rope.
Any ideas on a good one?
When I’ve looked at 8MM ropes or cordage, the strengths seem to vary > quite a bit. One I’m looking at has a strength of 14Kn, anyone know > of > a minimum recommended strength for rappeling on?
Thanks.
>
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