You're correct about the notch: not at all pretty and one of my worst; but technically correct- the hinge was a straight line perpendicular to the direction I wanted it to fall; I made sure of that. Further, this was not my first tight nor large felling. I'd done several successfully by that time and even took pride in the precision of my notches. We were also pulling the tree in the direction I wanted it to fall with aprox. 1000 lbs (maybe more) of force roughly 25feet up. In the video the tree begins to fall before I finished cutting the back strap of wood.
Since my competence is clearly in question (understandably) regarding tree felling allow me to defend myself. These photos were taken 4 months previous to the "narrow margin" vid.
Bored in behind the notch leaving a strap of wood holding it up.
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Got to ask - Why did you fell that tree knowing you had very little experience of felling large trees? I mean 6 months! most trainee arborists are still refining their basic notch on small trees at that time.
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The day after I first successfully 'climbed' (figured out the friction hitch) I was in a sixty foot pin oak (a removal). I think that job took two weeks and I was paid $500. The second job was a honey locust nearly 100feet tall in tightly confined back yard. That job took a month I think. In both of those instances, and many other after, I took on problems not knowing exactly how I was going to solve them; but confident that I would because I have a history of figuring it out... even if it takes forever. No one approves of this, I know: but I knew that I could do it and I did it. I am entirely self taught: that is, I learned from books, videos, this and other forums, etc, but I never had anyone teach me anything.
But that notch was crap: I place all the blame on my poorly sharped chain.
And I was pretty uneasy about it: but I'd made the cut and was committed. I spent a half hour, maybe more, with the 200T making micro adjustments to the notch before I went for the back cut.
And I can't type no more right now.