Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This is sounding like tree guy gospel....The knowledge you seek is out there, my son
Nahh it's easier to pull up than down... You can't pull down more than your weight, you can pull up much more.It is easier to pull down than up, the same force is used to lift the same load the same distance.
Yes, a bit more than the weight of your body.you need to provide just a wee bit more force
So this is based on the assumption that climbers consistently pull down with a force equal to 33% of their body weight?A Rads system is 2:1 plus a 1:1 redirect if the hauler is stationary. It is 3:1 if the hauler is moving. What has to be remembered or factored is the fact that the climber weighs less as he pulls down on the rads.
150 lb climber pulls down with 50 lbs, that means that the second pulley is only seeing the 100 lbs of his remaining weight. That 100 divided by the two lines are 50 lbs each holding him. 3 lines x 50 lbs is his 150 lbs. 3:1
Same guy but hauler is on the ground. Climber is still supported by 3 lines but his 150 lbs never changes because he is not exerting any energy. The ground hauler has to pull 75 lbs over the redirect to impose the 75 lbs to the 2:1.
He is not really a climber at this point but is just dead weight like any other load.
33% exactly would be a free hang on a RADS system. 33% + anything the climber is going up. But that is splitting hairs. Can we go back to the up/down pulling thing? I felt like Dr Seuss there for a moment... How about we measure the force it takes to push a rope 1 meter.So this is based on the assumption that climbers consistently pull down with a force equal to 33% of their body weight?
That's because your a real man, and we are just american'tsOh man poor Drew just wants to get back in from a limbwalk...down here we havd some crazy mushroom trees....long limbs low TIP's...I have always sucked it up and go out and come back balancing the shit out of it...get used to it...I am no superduper climber but get shit done....no mechanical advantage here....I setup a lot of redirects to save the long limbwalk though...pros of SRT
No way Evo...I am just dumb and can't be bothered setting up mechanical advantage...That's because your a real man, and we are just american'ts
Yes, from outside of the tree climbing community.That's not going to work. Levi is looking for a credible sorce.
This is exactly what i was saying![emoji106]From "On Rope" pg. 242
"If the end of the rope is fastened to the load, the MA is odd, e.g., 3:1. If the end of the rope is fastened to the anchor the MA is even, e.g., 6:1."