-
The SH Membership has gone live. Only SH Members have access to post in the classifieds. All members can view the classifieds. Starting in 2020 only SH Members will be admitted to the annual hunting contest. Current members will need to follow these steps to upgrade: 1. Click on your username 2. Click on Account upgrades 3. Choose SH Member and purchase.
-
We've been working hard the past few weeks to come up with some big changes to our vendor policies to meet the changing needs of our community. Please see the new vendor rules here: Vendor Access Area Rules
Srt with oplux
- Thread starter 20ftup
- Start date
I doubt you’ll get them to put it in writing but I spoke with Sterling about using belay devices with the 8mm OpLux. They said (I’m paraphrasing) the devices are typically only rated down to 9mm because 99% of the available ropes are that size of larger. OpLux is one of the first ropes on the scene uses newer fiber tech for rappelling applications. They didn’t see any reason why the Safeguard wouldn’t work with OpLux but I’d encourage you to call them yourself.
Sent from my iPhone using Tapatalk
Search youtube for canyonlux and lifeguard. It's been tested by a *very* reputable tester. interpret the test results as you will.
Yep, tracking. Still not technically rated for 8mm.
Sent from my iPhone using Tapatalk
Correct. Better than many devices a lot of people here are using - but not rated. It's up to the user to evaluate any such tests and whether they find them sufficient.
Last edited:
Bourdeau
Well-Known Member
Last edited:
There are ascenders rated for 8mm (kong duck, ropeman 2, petzl ascension and peobably most hand ascenders...). There are rapelling devices as well. If you are ok to switch devices between going up and going down, you can stay in spec.
Note: the properly rated ascenders will in many/most cases almost certainly damage the rope sooner and fail at lower loads than the safeguard shown.
The rope ‘fails’ almost at 2000lb force. OSHA maximum fall arresting force on a human in a body belt is 4kn(900lbs). Why? Do you know what happens to your body if you generate 2000lb of force when you fall and then stop that fall with a static rope?
that number goes up double(8kn) with a 5pt harness, which distributes the load more evenly across your body.
you can interpret the test however you want. What is not up for interpretation is what will happen to your body if you fall far enough in a saddle to generate 2000lb of fall force.
how far does a 250lb person have to fall to generate 8kn? Just over two feet.
the test performed in the video is an important one. It relates to what we do in certain ways. It does not translate into ‘rope breaking at 8kn is not good enough for saddle hunting’.
Someone is going to break their neck or back saddle hunting because they think that their rope being capable of withstanding 2000lb or force will protect them in a fall that generates that much force. Please be careful.
that number goes up double(8kn) with a 5pt harness, which distributes the load more evenly across your body.
you can interpret the test however you want. What is not up for interpretation is what will happen to your body if you fall far enough in a saddle to generate 2000lb of fall force.
how far does a 250lb person have to fall to generate 8kn? Just over two feet.
the test performed in the video is an important one. It relates to what we do in certain ways. It does not translate into ‘rope breaking at 8kn is not good enough for saddle hunting’.
Someone is going to break their neck or back saddle hunting because they think that their rope being capable of withstanding 2000lb or force will protect them in a fall that generates that much force. Please be careful.
Ropeman cutting the rope at 4KN? That's concerning, a bit close for my comfort, and a failure mode that I don't like. The results of those tests? I'm more than comfortable with that device/rope combination (I'll break before it does, and if I put myself in position to generate greater loads I need to add something to dissipate those loads). In general, (toothed) ascenders are going to fail at around 6KN.
It's certainly a safe and reasonable approach to use only devices certified for a given diameter rope, and in the manner in which they are designed/certified. It's also useful to look into what that certification means, and hunt down test results of similar devices (whether used according to directions, or "misused") for comparison.
