The Sound of 2 Faces Slapping

[TheTreeSpyder]

i think one of the largest forces in felling, can be as the 2 faces meet; forcing a tearing or siezing in the hinge (if there is allowed one). Or the culmination of theses 2 fighting forces into a dreaded barberchair/ split decision.

This force can be less than other forces at the time if the motion is slow, thereby minimizing the force into the rebounding energy of the faces meeting. But too slow can cause seizing/ barberchairing in such a 'stall'.

But when slammed hard into each other with immense leverage, weight and speed, the 2 meeting faces constitute the higheset power present while felling. Present to help, hurt or be neutral; without a brain of it's own, as any other force.

This is why a Dutchman interuption in face can be the most powerful adjustment to fall; and most dangerous, for you have to slam the faces fast for most power- that can be immense and almost uncalculable. All the power is maximized at the hinge.

As the largest force in felling (faces rebounding off each other) in this phase 2 of felling; is another reason i think that the force fed into this phase should be balanced across the hinge. So that the rebounding (passive) force can serve the spar forward squarely into the gunned apex of the face.


IMLHO

Or something like that........

:alien: :alien:
(how do i get 2 1/2 of 'dem aliens?)

 

[Stumper]

Thought provoking. The real force of course lies in the falling mass of the tree. When the faces meet a fulcrum is created-3000 lbs of tree strung along a 50ft lever is free to act against holding hinge wood on the other end of a 1 foot lever (or even less). When you think about it it is pretty amazing that you can lay a tree gently into a face and get the hinge to hold everything at a 45* angle (at least with some species).

 

[TheTreeSpyder]

i think the force would be the mass x length x speed (in simplest example w/o digesting averages of wieght dispersion); truly awesome in felling.

An interuption of the faces (dutchman), brings to the front view how much force and importance the pushes to the opposite side that this phase of hinging (the faces meeting) has. All these things hold true in felling, bucking, freefalling limbs, rigging limbs, lifting with crane etc. Just easier to examine flat footed felling, and written more about like that too; all exactly the same but different!

Topping a tree into a kerf cut to get it to jump out is a type of 'KerfDutchy'; in that it is an early closing face, and the rebounding energy hops it forward. Seeing that the kerf is cut clear across the face, the hop is equally balanced. If the head weight favored one side, to throw forward squarely, one could adjust pull in hinge or push in face to balance lean's pull and pop forward squarely. The faster the slam into a Dutchman, the more rebounding 'pop' you get out of this step lift in the face; to have available in this strategy.

If step or lift in face is to one side, it can correct lean from that side pushing to center as faces meet. This shows the power in this phase of felling, and how supreme it can be. It also shows why it is so important to craft precise faces that don't cross or in any other ways invoke these forces unintentionally. Also how proper consideration, should be given to a face decayed on one side, especially in felling of more size and spead.

IMLHO

:alien:

 

[John Paul Sanborn]

I like the sound of tha canopy rushing down. Then the crash as it hits.

Having the notch to narrow can cause the whole tree to jump back behind the stump.

 

[TheTreeSpyder]

Of course the title is a twist the sound of 1 hand clapping and if a tree falls in the empty woods.....

JP's warning of fiddling with the closing faces, especially in the immense forces of felling is on target and warranted. So, i enter this dis-claimer / warning / explanation from elsewhere's.

Originally posted by TheTreeSpyder

Dutchmans are/ can be very dangerous; as with speed; become a direct reflection of the most power the mass and levergae of the tree has to offer all at once. So i use their 'physics' more in snap cuts, topping, SwingDutchy in rigging, balancing freefall limb's pulls etc.; not very much in felling; where they can really show too much of their power, but at the same time, easier to witness/ imagine their functions raised to this scale.

When i do use part of a Dutchman force(lift/push in the face, from early closing face) in felling it is sparingly; and with keen eye on safety, necessity and lessons gleaned. Here i had camera made available so i could share it. Most of the lessons i see-k in using DutchMan is not of doing more DutchMans; but rather the constant proper-ties going on in all hinges closing and their power, contributions and warnings to the whole system/act of cutting anything in any direction.