I have a large dead tree laying between to hills and supported by a few smaller trees and its upper branches. I'd like to pull it over as it's very sketchy approaching with a chainsaw and down right dangerous. How would you approach this using snatch blocks or block and tackle? What kind of line should be used? The tree location will be hard to get any equipment in to do the pulling. What can be used to generate force? I believe using mechanical advantage is the way to go but I'm new to this and need some advice from a pro. Thank you.
If the tree is snagged then I would educate myself on the dangers before I did anything. There are a lot of good videos on UA-cam showing how to safely drop a snagged tree. If you need to get a line high up then I have videos showing that and obviously on how to set up anchors as well as Mechanical Advantage systems. But I can't really recommend any technique without seeing the tree because I don't know the exact situation or the size of the tree. You'll have to make that decision for yourself. As far as rope and gear requirements they have to be strong enough for its intended purpose. Obviously gear an arborist would use is best but if the tree is small you might get away with cheaper components. Sorry but there is no easy answer on this as there are so many variables that I can't ascertain without seeing the tree.
You could, but the Clutch would have to stay with the load (person in chair) in order for it to work. Imagine switching a single pulley and the Clutch in their respective positions. If you look at workers from the old days working on church steeples and the like they used a similar system for raising and lowering themselves although their equipment was fairly basic.
@@perryfire3006 Do you think a 4:1 or 5:1 is enough to easily raise body weight? Does 5:1 literally translate to 1/5 of the weight? i.e. 200 lb can be lifted with 40 lbs of force? Do you have a video of something similar?
Yeah, a 4 or 5 to 1 could easily be used to lift one’s weight. There is theoretical mechanical advantage and practical mechanical advantage. Even high quality pulleys will still have friction so we can’t use theoretical MA but we can get close with quality gear at around 90% efficiency. So do the math and add some additional force for friction. No I don’t have a video of raising myself with a pulley system. Plenty of others though of raising objects.
I have a large dead tree laying between to hills and supported by a few smaller trees and its upper branches. I'd like to pull it over as it's very sketchy approaching with a chainsaw and down right dangerous. How would you approach this using snatch blocks or block and tackle? What kind of line should be used? The tree location will be hard to get any equipment in to do the pulling. What can be used to generate force? I believe using mechanical advantage is the way to go but I'm new to this and need some advice from a pro. Thank you.
If the tree is snagged then I would educate myself on the dangers before I did anything. There are a lot of good videos on UA-cam showing how to safely drop a snagged tree.
If you need to get a line high up then I have videos showing that and obviously on how to set up anchors as well as Mechanical Advantage systems. But I can't really recommend any technique without seeing the tree because I don't know the exact situation or the size of the tree. You'll have to make that decision for yourself.
As far as rope and gear requirements they have to be strong enough for its intended purpose. Obviously gear an arborist would use is best but if the tree is small you might get away with cheaper components.
Sorry but there is no easy answer on this as there are so many variables that I can't ascertain without seeing the tree.
@@perryfire3006 Thank you for the advice and all the great videos.
Could you rig this in a way where a chair is substituted for the log and a person could raise himself and then brake down on descent?
You could, but the Clutch would have to stay with the load (person in chair) in order for it to work. Imagine switching a single pulley and the Clutch in their respective positions.
If you look at workers from the old days working on church steeples and the like they used a similar system for raising and lowering themselves although their equipment was fairly basic.
@@perryfire3006 Do you think a 4:1 or 5:1 is enough to easily raise body weight? Does 5:1 literally translate to 1/5 of the weight? i.e. 200 lb can be lifted with 40 lbs of force? Do you have a video of something similar?
Yeah, a 4 or 5 to 1 could easily be used to lift one’s weight.
There is theoretical mechanical advantage and practical mechanical advantage. Even high quality pulleys will still have friction so we can’t use theoretical MA but we can get close with quality gear at around 90% efficiency. So do the math and add some additional force for friction.
No I don’t have a video of raising myself with a pulley system. Plenty of others though of raising objects.