How to Use Mechanical Advantage to Pull Trees and Lift Logs
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- Опубликовано: 5 окт 2020
- Ropes and pulleys offer a ton of resources for building and using mechanical advantage systems in tree care. Here we show just some of the arborist uses for mechanical advantage and how to set them up.
Find rigging and mechanical advantage gear here: www.treestuff.com/rigging/mec...
I love using the rigging techniques I've learned as an arborist to recover stuck vehicles when we go off-roading.
Truth!
4:30, You need a bucket (preferably of a bright colour) to keep and throw your stuff into - throwing it onto the ground generally means you will lose stuff. That applies to whatever job you are doing outdoors, including pruning trees. I lost a few pairs of secateurs, wire cutters, etc, that way, until I learned to put them in a bucket and never set them down on the ground, even for 10 seconds.
Wow, that was great. That's the best explanation I've seen of how to use mechanical advantage. Thanks!
Glad it was helpful!
You can absolutely capture the progress of the main line and reset the mechanical advantage with the 3:1 system that you built at 4:00 quite easily. In rope rescue we refer to this as a Z-rig as it resembles a Z when laid out. All you need to do is add another prusik to the main line attached to the anchor carabiner and it will capture the progress on the main allowing you to reset your MA by advancing the prusik and pulley back up the main line.
@Bobby T Yes, he had progress capture, but he states that you can not capture the progress AND reset the mechanical advantage on the inline 3:1. He was capturing progress using the haul line itself. If you continue to read what I wrote I stated that you just need to add a prusik to capture the load line at the anchor and just move your MA pulley back up the main line to reset and haul again. His solution was to make a completely independent hauling system and my only point was that you can capture and reset using the inline system by simply adding one more prusik or other kind of rope grab at the anchor.
@Bobby T “You still don’t have a way to reset it using this technique.” This is what I’m refuting. I understand that he knows he can capture the progress and I’m not trying to tie anyone up with semantics. To reiterate, what I am saying is that you can leave out the Aztek and have no need for any extra equipment aside from one capture device for the main line to reset the z-rig 3:1. I only seek to shine light on a simpler way with less equipment that I have utilized personally. I’m not flexing or saying that he is wrong, this is a very informative video.
Great video and well explained... I needed this!
Excellent demonstration !
THIS DEMO IS EASY TO UNDERSTAND THANK YOU SHARING US THE IDEA SIR.
thank you for putting the equipment on screen as you demonstrate!
Nice trap
But, how do you drop the rock on the deer when it passes?
Thanks bro made it easy to teach my daughter this concept for school.
I learned a lot, lots to think about thank you
What a great teacher you are! Your strong point is intellectual, not physical. In fact, your weak physical constitution helps your demonstration, making it more convincing. Great job!
... like unleashing the girly man?
THIS DEMO IS EASY TO UNDERSTAND THANK YOU FOR SHARING US THE IDEA SIR.
Excellent information! Thank you.
Glad it was helpful!
Well done!
Great tutorial. Easy to understand.
Glad it was helpful!
Very helpful vidoe on mechanical advantage #mechanicalAdvantage for backyard DIYers
Interesting, thanks for the video. I need to life a ~150lbs anvil so this will absolutely be useful
Hope dont need it but love it. And wasent aware i could reset. Thanx great vid
Nice explanation, Nick.
Glad it helped!
Very useful.
Awesome video, thanks for sharing, God bless
Thank you! You too!
This was very interesting, and I learned from it. My main take-away is that the Rock Exotica system costs just under $400.00!!! you do realize that is out of reach to most of us non professionals!
Can you show us an alternative, though surely not as convenient, method using only rope and/or affordable gear?
Thankyou vm vefy usefull and very didactic .Heakth for you and yours
Pricey mechanical advantage gear!
Excellent and clear explanation. But I wonder, how did you attach that rope to that heavy boulder? This deserves a tutorial on its own. ;)
That's what I was hoping to get when I clicked the video
Oye Quetzalcoatl, como estas? It's chicome mallinali 🌟 the power of knots is how the rock was tied! I know it
Most likely a bowling on a bite
You can also use a bowling on a bike for a tree, climbing harness
muito bom!!!
Very cool
Very smart !!!
I love it excellent
Good info
Excellent demonstration.... most appreciated! : )
Amen
Veteran
Glad it was helpful!
nice vid 👍
Amazing
Thanks!
You bet!
This is a lot of very basic rigging techniques and some fairly advanced equipment. Hopefully, anybody who needs this basic of instruction hasn’t bought that much equipment without knowing how to use it.
That is true. That rock cost about $600 to lift. I think the vid is more about mechanical advantage, clearly a 1 tonne chain hoist with 2.5m lift for $56 from eBay (I bought one today) would be easier. A simple wooden tripod over the rock acts as the “crane”.
All the gear no idea?
Can you use this system with larger pulleys to assist in lifting branches in tip tying method, similar to GRCS or Stein RCW3001?
Bigger pulleys lend small increases in efficiency but generally if you want more output you use more pulleys, not bigger ones.
Wow!
What knot is used to wrap/hold the rock up? 😊
Nice & would like to learn it but it's so far away I can't see anything that went on really for a job arborist. Looks like pretty cool results though
I would use a CLEAT HITCH to lock off the Porta-Wrap.....not 2 half hitches. Outside of that. Great presentation.
Wait the first one is basically a truckers hitch. You could lock that one off.
Amazing
Thank you! Cheers!
I like that. Can you tell me this……..does the amount of mechanical advantage vary depending on the angle of the redirect.
Not really. Maybe in a theoretical sense, or with a very low efficiency pulley.
Can we use a Dyneema 1/2inch rope with the rope jack
It should work!
It was explained in the video, this is a 'Cadillac $ system', and this all could be done much cheaper with some shopping for similar equipment. If life or critical materials are being maneuvered, I'd assume you acquired the best equipment available and had some formal training. If this is more for 'Handyman use', a cheaper (but definitely reasonably reliable) system you can make on your own would work just as well, might take more time to set up, but would do just fine, and the videos are pretty good showing how to use the system, BUT PRACTICE BEFORE! It is fun to learn & use the pulley systems, but to 'Compound the Advantage' also means 'Compounding any possible problems you weren't aware of' before Murphy's Law set up an unforeseeable dangerous mess. So study several different videos and practice. Good luck & be safe.
Looks like you could mangle your fingers badly on the reset process if you fail to set it correctly.
I love my Rock Exotica kit.
Im confused with the last part where hes talking about how something can be done with scrap rope
You can put progress capture on all these system. Even the one without mechanical advantage. What are you talking about?
3 to 1 used often yer prob is gets in ya pulley. Then doesent work. That was good cheers
Or....you can simply put a pulley straight onto the main tree and using only the main rope you can lift up the rock as much as you want :) no more “pulling distance” bothering or forcing you to have 500$ equipment to lift something up 2 yards.
Beside kidding it was a nice video, it was interesting to see your alternative solutions
Pulleys are way more expensive than I thought they'd be
Extra ordinary tough procedure.it would be better if make one scenario and then give us solution
Now why would I go through all that trouble just to raise a rock?
truckers hitch
Can i have video request content can you make lift 1 ton using pulley and how many pulley needed to do the jab
**** hehe I'm now good at english sory
Not easy for a newbie to see exactly what you're doing. You're whipping through this demo without closeups or pauses, no diagrams. All I learned was that you know what you're doing.
Thanks for this feedback. I remember that we had a technical problem when we shot this, so it might be that we lost one of the cameras.
Thanks, now my brain hurts!
$500 dollars of gear? Go spend 40 at home depot for a come along.
That's what I'm gonna do
🇵🇬🇵🇬,,,...
$365 for 2 pulleys and some rope??? RRRIIIIIGGGHHHTTTT!!!!
You know your rigging buy you are not a good instructor. You did not show attachment of progress stop on MA system well enough for teaching someone how.
Stop the irritating laughter, please
Now iknow how they built the pirámides
Well done!
Thanks!