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Why don't yall 2TC?

Horn said:
Is there a section of posts discussing 2tc with an aider on the bottom tether? I see mshultz373 just asked about it too.

Mostly curious if it's not popular, why?
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Seems fiddly/unnecessary to me. All the (small amount of) 2tc I've done has been with my foot fixed in the loop, never take it out so there's no point to an aider, I lift my foot as high as I can then use my arms to pull up and step into it. A step above or below wouldn't be any use as it would either be too high or too low, and once I've stepped up it makes more sense to move the bridge tether than taking a second step. I also run my (left) foot loop about 30 degrees to the side of my bridge tether as this gives me the most natural stability when standing/using the other leg to wrap on the tree while moving bridge tether, so wouldn't work to swivel my hips and step across with the other (right) foot
 
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Horn said:
Is there a section of posts discussing 2tc with an aider on the bottom tether? I see mshultz373 just asked about it too.

Mostly curious if it's not popular, why?
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I would be more concerned about kick out and slack management personally. using a multi step aider is more akin to no sticking than 2TC as far as movements go, and risks IMO
 
krub6b said:
I would be more concerned about kick out and slack management personally. using a multi step aider is more akin to no sticking than 2TC as far as movements go, and risks IMO
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I no stick regularly with the same 3 step aider I'm planning to try this with on my x- wing. I'm interested in less bulk. As light as the test set up is I might just take 3 or so and not move them as I climb
 
Horn said:
I no stick regularly with the same 3 step aider I'm planning to try this with on my x- wing. I'm interested in less bulk. As light as the test set up is I might just take 3 or so and not move them as I climb
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Have you tried to 2TC without the aider?
 
Well I tried it with the aider, I don't know why I wouldn't want my aider. I am a super aider fan though. Never leave home without one. Looks like this is the plan moving forward
 
Horn said:
Well I tried it with the aider, I don't know why I wouldn't want my aider. I am a super aider fan though. Never leave home without one. Looks like this is the plan moving forward
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What aider? I’m wanting to try one again.
 
gcr0003 said:
What aider? I’m wanting to try one again.
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I'm using my 3 step @15" from CGM. I'll concede that I didn't use all three steps every move, but I had a branch to go around and it was my first time trying any of this.

Curious if a spreader bar on top of a ladder style aider helps any. The cgm stays open ok for me , just curious about the other style and an etrier
 
my aider is setup for my OOLA sh1kar. so it has the two small eyelets that fit over the outside-edge of the step and are NOT the triangle shape most 2TCers have for their step. so that would mean either figuring out a way to have the triangle-step like @gcr0003 pictured above - or possibly run the line through the aider's eyelets, and likely end up fussing with spacing most of the climb?

i assume most 2TC run a regular platform at the top of the climb? I

my biggest anxiety in one-sticking are moves when I have slack in my tether line and have to adjust it higher. a second tether is clearly safest, but most of the time, I end up with my ropeman1 to the tree and it's still not tight enough. (sidenote: I have thought that simply shortening my saddle's bridge may be the way to address this). a linesman makes me feel more secure, but I logically don't see how it would at all stop you from falling to the ground unless there were a branch or something. it's also just weird to take slack out of the line with the madrock while climbing, get to your platform, then suddenly need slack to adjust the tether higher...

but realistically, my tether line (9mm canyon elite), madrock and carabiner (26/8 kN rated) would hold me on whatever fall the amount of slack I have amounts to. but I'm far less confident in the bridge rope of my saddle.
 
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mschultz373 said:
but realistically, my tether line (9mm canyon elite), madrock and carabiner (26/8 kN rated) would hold me on whatever fall the amount of slack I have amounts to. but I'm far less confident in the bridge rope of my saddle.
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I'd worry about your innards before I worry about the bridge giving out. The kind of slack required to break any commercially made saddle components will generate enough force to surpass a car accident. Slack is always going to be the enemy when working or recreating at height


mschultz373 said:
i assume most 2TC run a regular platform at the top of the climb?
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Pursuit platform with bullman platform steps on the same strap for me.


Sent from my Pixel 3 using Tapatalk
 
krub6b said:
I'd worry about your innards before I worry about the bridge giving out. The kind of slack required to break any commercially made saddle components will generate enough force to surpass a car accident. Slack is always going to be the enemy when working or recreating at height
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I honestly find that hard to believe, but I must be naive. or we're imagining a lot more slack than I allow? Any physics people here able to sketch the kind of force we're looking at here?

I was hit in my car by a guy going 20-30mph faster than me once - that is not an experience I would like to relive in my saddle.
 

Impact Force Calculator - Calculate the impact force in a collision

Free online impact force calculator with which you can calculate the impact force on impact of a moving body given its mass, velocity at impact, and time contact during impact. ➤ The force calculator can be used to solve for mass, velocity, impact force and time contact during impact. The tool...
www.gigacalculator.com www.gigacalculator.com

There are a bunch of different ones on line to calculate force and this may not be the best. Just for fun, I plugged in 100 Kg body weight, 9.8 meters per second (acceleration of an object in Earth's gravity) and 1 meter for .1 sec duration and got a peak impact force of a little over 9.8 KN. That sounds like a bad day. Don't fall a meter or more and come to a sudden stop. Now I need to go wash my hands since I've been handling the metric system, lol.
 
Red Beard said:
Oh my gosh it just gets worse with American standard units!
View attachment 95099
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E5C074DA-B004-4575-A15B-1D511B895688.jpeg31F4A8A2-73AF-4F67-85CF-1B44D1B7D005.jpeg
The numbers you put into the equation would not accurately represent the fall you’re trying to represent I.e. your body is not giving 12 inches during an impact less than a second. Understanding the terms and how they apply is as important as the calculation itself. Bad numbers in bad number out.

There may be a fall force calculator out there that climbers use that may get you more accurate numbers. I’m skeptical of the ones used from this calculator in this manner.
 
But understand. That is assuming 9.8 meters per second velocity has been reached. In reality, even falling from a plane, you will not reach 9.8 M/S due to air resistance slowing you down. From a resting position that suddenly lets go, your velocity would be very low over that 12 inches of distance.
 
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