Been thar, done that Or! Nice, stretched fibers, hardest workers on crew many days!
Guess i missed that soft kerf edge the Murph, thanx, will look for it more often; seen enough of my own in the past to know what they look like!
i figured that the bar was too short to reach on backcut without presetting one side of hinge, but that would have been my choice. Stumper is really right on about that long thin across the hinge, it works so many ways IMLHO.
Many trees can fall lucky on wide open construction sites especially aided by the shear force of earth moving equipment, the forces are there 'lessor' technique and need for such. Better mechanics makes it safer, and wider adaptation of use; especially without the available correction of heavy equipment to lock against the ground and push.
Most of the corrective hinging, illustrates to me the amount of force it takes to address direction adjustment, and a better, self adjusting system to natureally do it with, in a self tightening position (behind motion/pull).
i think a dutchman can make tree sieze when fall is moving to slow to take step up/launch off. With the slow movement and hinge pulling from behind, not enugh force to slap down and climb 'curb' in this case (bottom face cut too far?). Barberchair is more prone to happen at such siezing i beleive, dangerous time as pull and face compression fight each other escalating till one fails, i look at a barber chair as a split diecision..... But think it is more likely to happen if bottom cut is too far also....
This is all fascinating to me, but just ground school. i look at all the lil hinges in the air. If felling N with a NW lean is achievable with this mechanics in hinge, so is using it to steer and throw to the side of the downward pull of gravity. Once again the point of the tapered hinge goes in the general direction of the OffSide pull to pro-posed travel (that pull would be down as you moved limb across), kerf steps for mini dutchmans go on thin side of hinge (down) to pro-vide lift against down as in tandem wide end of hinge provides lifting pull. All the same sideways IMLHO! And presented on the ground to show the immense power, how to use it; and how well it works even at that immense scale. Also, a strategy that is more powerfull as the weight and leverage is pitted against itself, the more there is to challenge the hinge, the more the hinge pulls, making bigger/heavier easier on some tricks..IMLHO
:alien: