MikeD74T said:
I'm guessing that a picture of the stump would show an undercut wedge & the hinge cut through....
Good thoughts Mike and a high probability that atleast one of these elements was present in this mishap. BTW, an undercut wedge is what`s known as a Humboldt notch and these can be done very safely if done properly.
I have another theory as to what happened based on this statement
DDT said:
I cut a slope for the tree to fall south, I got about 2" away from the back side and pulled the saw out. My first thought, this is NOT RIGHT, it should have moved before now. The saw kerf was still the same so it was still not even want to come my way. Before I could turn and run the tree clasped the saw kerf and slid down the ramp I cut, then dopped to the ground very fast.
and since DDT has not provided any clarification I`ll tell you how I read his account of what happened. BTW, I`m very sorry that he was hurt and I am not trying to kick the guy while he is down, we all make mistakes.
I can easily read DDT`s account to state that he did not make a notch and a felling, or back cut, but instead attempted to drop the tree using a farmer`s notch which is nothing more than a sloped backcut in the desired direction of fall. The problem with this type of felling of any tree with any weight to it is that it is difficult to make a good hinge which is the primary control over the direction of fall, there is no step created to prevent a kickback of the stem when the hinge does break, with no support under the stem and no hinge the base wants to fall to the ground meaning that you can have a standing tree with no attachment to the ground(no control over direction), and the angled cut makes for a weak structure both within the resultant stump and the falling stem and wedging to control direction becomes impossible.
When DDT stated that the tree "clasped the saw kerf" and "slid down the ramp" I could read this to say that a barberchair(the stem split vertically) was established in the trunk which forced the heel of the stem outward closing the kerf. The leverage against the sloped stump cut within the still standing but now slightly leaning tree would be tremendous, easily enough to break a 2" hinge, now rapidly forcing the tree in an uncontrolled slide down the stump. It happens fast, just as DDT stated.
I`d like to know more about this incident and I`d like to know if I`m even close to the way it really happened.
I appreciate DDT taking the time and effort to post his account so that a good discussion can ensue.