mechanical advantage climbing line

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You'd get even more advantage if you tied a bowline to your saddle took the other end and tied it to your truck and had someone drive away from the tree.

Probably not as safe but you'd get off the ground before lunch time which is about how long this setup would take.
 
You'd get even more advantage if you tied a bowline to your saddle took the other end and tied it to your truck and had someone drive away from the tree.

Probably not as safe but you'd get off the ground before lunch time which is about how long this setup would take.

I'm not that old yet, just trying to get to the top w/out a struggle.

LT...
 
You'd get even more advantage if you tied a bowline to your saddle took the other end and tied it to your truck and had someone drive away from the tree.

Probably not as safe but you'd get off the ground before lunch time which is about how long this setup would take.


Would you trust your groundie to stop on time.
 
Your right Dan It doesn't work, tried it tonight. There has got to be a way to set up a pulley system.:confused:

LT...

Basically you have to make a huge fiddle block. You have to set the block in the top of the tree first. You can set it with a shot bag. Gonna need 3 times the rope for a straight shot up there with no resetting the one pulley.

I will set it up and take pics of something that will work. You will use the same ammount of energy though BUT WAIT you can just get somebody else to pull you up:rockn:
 
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http://www.arboristsite.com/attachment.php?attachmentid=59184&d=1193713279

This rig was expensive, but it gave a lot of mechanical advantage and had the advantage of rapid descent without changing ascenders to descenders.

But, adding mechanical advantage costs repetitive motion. You have to be willing to trade strength for stamina. I fooled with this for a while but decided it took too many pulls to get to the top. Texas style SRT is the easyest ascent I have found.
 
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http://www.arboristsite.com/attachment.php?attachmentid=59184&d=1193713279

This rig was expensive, but it gave a lot of mechanical advantage and had the advantage of rapid descent without changing ascenders to descenders.

But, adding mechanical advantage costs repetitive motion. You have to be willing to trade strength for stamina. I fooled with this for a while but decided it took too many pulls to get to the top. Texas style SRT is the easyest ascent I have found.

Well the hardware looks good but what is that you have threaded into it? That is one ratty rope HOLY CHIT.
 
i think the title should be "More Mechanical Advantage Climbing Line"; for we should see that the DdRT has a 2:1 potential as is(we have to shift half our weight x distance to the control side, to lift the load side etc). Then we must see this to be able to discern form visible thru all else in the same closed system efficiency examples in pulley (or 1st class lever) systems.

FireAxMan offers a solution of more ergonomic in trade of mechanical efficiency; as long as the CG (lower chest as center of gravity) is kept in line with device(rope).

We can also have climber pulled up/ or aided with rigging line as they work their lifeline separately thru self tended hitch as the are prussicking/camming up. The rig line can be worked to take 50%-70% load off climber, the life line provide final lift, and safety; this way rig line moving at full speed (of input); doesn't outrun climbing moving at half speed(of it's input; the 2:1 power increase, having half speed as reciprocal).
 
Your right Dan It doesn't work, tried it tonight. There has got to be a way to set up a pulley system.:confused:

LT...
There is! Set two doubles like a block and tackle with prusic capture, then set a single rope with bigshot to intended height tie it to top pulley and pull it up to height and base tie the other end. Now clip in to bottom pulley and you have a 4 to one with progress capture. You will pull lots of line out but it will be easy to pull!
 
Only problem i see is you'll only be moving up a few inches for every foot you pull. That might wear you out more in the long run. I know using RADs with out the foot strap give a big mechanical advantage but takes forever.
 
Just get a good cmi foot ascender. Using a mech advantage would make DDRT 4:1 and it would be a very slow crawl up the rope.

You can buy a saka knee ascender as well if you want
 
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