Moderator: Tim White
GroundquestMSA wrote:A few previous threads have bashed Atwood for making "unsafe look-alike" ropes. The specific ropes mentioned were not marketed as climbing ropes, but looked like them. This was viewed by many as irresponsible, and maybe it is, but that's another matter. Atwood does make static rappelling rope, and I wonder if any of you have used it?
Dale Atwood wrote:It has been difficult for us to get our Static ropes promoted through our users online. We sell Tons of static rope and yet we do not get many people posting their reviews about it online. I have read the forums that you are speaking about and it sounded like it's all from people that have not even used our products. All our safety products are sent out to 3rd party labs to be tested and We use the same materials as the other brands, such as high tenacity polyester and nylon.
As far as the stock lengths on our website, typically people just email for longer lengths, we make our static ropes in 150 / 200ft / 300ft / 600ft / 1,000ft .
Regarding the colors and patterns. All of our ropes are packaged with correct labels that state whether they are static safety or utility grade and the price per foot is not close on either of these. Also all of our Utility Ropes state that they are not life lines.
Bob Thrun wrote:GroundquestMSA wrote:A few previous threads have bashed Atwood for making "unsafe look-alike" ropes. The specific ropes mentioned were not marketed as climbing ropes, but looked like them. This was viewed by many as irresponsible, and maybe it is, but that's another matter. Atwood does make static rappelling rope, and I wonder if any of you have used it?
What previous threads? A search on Cavechat does not find any previous mention of Atwood.
All kernmantle ropes look pretty much alike.
Atwood's static rappelling rope is "made from 100% HTPE fibers". That is High Tenacity Polyethylene. In the absence of specific numbers, high tenacity is synonymous with high strength. These fibers are often called Ultra High Molecular Weight Polyethlene, or UHMWPE.
NSS8921 wrote:Bob Thrun wrote:Atwood's static rappelling rope is "made from 100% HTPE fibers". That is High Tenacity Polyethylene. In the absence of specific numbers, high tenacity is synonymous with high strength. These fibers are often called Ultra High Molecular Weight Polyethlene, or UHMWPE.
Well, Bob, you got my attention! HTPE? That is not the same as UHMWPE/Spectra/Dyneema. UHMWPE would make a rather slick rope... But HTPE - is it strong enough for a static rope?
Bob Thrun wrote:Polyester rope is slightly heavier and slightly less strong than nylon. Nylon loses about 10% of its strength when wet. Polyester does not lose strength when wet. Polyester has less stretch than nylon.
GroundquestMSA wrote:Bob Thrun wrote:Polyester rope is slightly heavier and slightly less strong than nylon. Nylon loses about 10% of its strength when wet. Polyester does not lose strength when wet. Polyester has less stretch than nylon.
Why are poly ropes not the cavers standard? Especially in this country where elegant rigging is the exception?
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