newsawtooth
ArboristSite Operative
Is anyone using the Dynasorb dynamic rigging ropes? Any thoughts on the ropes and their application?
Dynamic (slightly)
- Thread starter newsawtooth
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tree md
Addicted to ArboristSite
Looks like the Dynasorb is the same thing as Yale Polydyne, it is just branded under the Dynasorb name for Sherrill. I asked about this a few months back. Looks interesting. It has greater Tensile strength than the Stable braid that I use but it has greater elongation as well. The elongation is compounded as the working load increases. Not really that big of a deal for most rigging applications but I decided to stick with my Stable Braid. I have never had the stable braid fail on me and I have hung whole trees with it. I have to stick with a winner.
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newsawtooth
ArboristSite Operative
I didn't catch that, thanks Tree Md. I will probably order some to see how it works. The idea is interesting and if it helps to keep me from being flipped around in the top of a tree after the load is suddenly stopped, well, that is preferable.
flushcut
Addicted to ArboristSite
You could also teach your ground guy to let the load run in the same token as more elongation
winchman
ArboristSite Member
yep
We're using it. We have a 250' length and a 175' length, have used both. We have some tall trees on the Estate, and lots of targets to miss.
I have been a climber above the block and have used it from the bucket, and it has absorbed the load as good or better than the stable braid we normally use. We normally use 1/2" or 5/8" stable braid, and are using the 1/2" dynasorb.
I like it, it feels really slippery, but that doesn't bother me at all.
We're using it. We have a 250' length and a 175' length, have used both. We have some tall trees on the Estate, and lots of targets to miss.
I have been a climber above the block and have used it from the bucket, and it has absorbed the load as good or better than the stable braid we normally use. We normally use 1/2" or 5/8" stable braid, and are using the 1/2" dynasorb.
I like it, it feels really slippery, but that doesn't bother me at all.
newsawtooth
ArboristSite Operative
You could also teach your ground guy to let the load run in the same token as more elongation
Who has time for that?
Thanks Winchman, I'll give it a shot. Do you guys have to pre-tension it much? I don't have to very often, so I am just curious if that is troublesome with the elongation. Carry on.
winchman
ArboristSite Member
pre-tensioning
Now that you mention it, pre-tensioning isn't the best line of work for this rope. We've used it on the Hobbs and GRCS, and it's slippery quality actually did it a disservice here. We could only get so much tension on it and then it spun on the bollard. I think that was a Hobbs problem, since the GRCS has the ribs to hold the line in place.
Anyway, it is more for bombing stuff than it is for tip-tying or lifting stuff.
At least that is what we have found so far. Only 3 months light experience with it, so take it for what it is worth. It may be just as well to buy some pro-master, which is rated lower, but still worth 7000 lbs, and has tons of stretch. The Sherrill catalog shows it is stretchier than the Dynasorb, but it isn't marketed that way (promaster).
Now that you mention it, pre-tensioning isn't the best line of work for this rope. We've used it on the Hobbs and GRCS, and it's slippery quality actually did it a disservice here. We could only get so much tension on it and then it spun on the bollard. I think that was a Hobbs problem, since the GRCS has the ribs to hold the line in place.
Anyway, it is more for bombing stuff than it is for tip-tying or lifting stuff.
At least that is what we have found so far. Only 3 months light experience with it, so take it for what it is worth. It may be just as well to buy some pro-master, which is rated lower, but still worth 7000 lbs, and has tons of stretch. The Sherrill catalog shows it is stretchier than the Dynasorb, but it isn't marketed that way (promaster).
