Tree felling vids

[flushcut]

Congrats on retiring!

 

[cory]

The potential for erosion definitely increases with slope percentage but the vast majority of Bjarne's video footage is on helicopter ground.

yes the helicopter angle would seem to be a major plus.

 

[Trains]

In reply to the earlier video of bark tear out.

See 4.40, dont want bark tear out up there.




more on the 2nd vid.

 

[cory]

crazy huge tree over a house!

I see he's gettin it done nicely without full wrap

 

[friedrich]

yes but he‘s tired in the evening because of it

 

[CurSedVoyce]

Nice!
I love the curf cuts for the rigging rope to bind at the marl and such. Great idea on slickery chunks

 

[lxskllr]

Think he should've cut his faces deeper to reduce levering it off the stem?

 

[CurSedVoyce]

Hard to arm chair that from ground level on a vid.
Smaller gob will do less damage on a structure too some thing go wrong

 

[Burnham]

At the very basic level, a shallow face set at something more than 1/3rd of the diameter will leave the stem with less push back and thus less generated recoil movement to the standing stem. That's because the hinge is forced to break by the closure of the face earlier in the fall than with a more open face, so the stem gets pushed back less before the top leaves the scene.

 

[flushcut]

Looks great from my recliner.

 

[cory]

Smaller gob will do less damage on a structure

Ha don't ya hate when that happens- tricky removal, loads of targets, all is going perfect until you back chain the pie outta the face and it's like a heat seeking missile to something fragile.

 

[flushcut]

Target acquired, bombs away, six seconds.

 

[davidwyby]

 

[Trains]

Harry is a top bloke, great channel, good to see him back up and into it, the more recent bus crushed by the tree was a good one too.

 

[davidwyby]

A faller I follow on ig, woodchuck460, said it’s not enough to just open the face, you gotta make the hinge flex. I just had another idea. 😆

Long hinge theory but add a pocket behind the hinge for it to flex into. Maybe double hinge it with a kerf too.

 

[cory]

So a 'pocket' that is more voluminous than a single kerf?

 

[cory]

How about if you have the tall hinge shown in your diagram above, and then have 2 guys cut the tree simultaneously, one from each side and these 2 backcuts separated by 1", thus allowing the hinge to flex and bend rather than break? Obviously a sketchy idea in practice but maybe the notion has merit.

 

[cory]

Or if you had a saw chain that was 3 or 4" wide, that would do it too. Now how to do that effect with normal chain and 1 faller...

 

[cory]

Harry is a top bloke, great channel, good to see him back up and into it,

What species of tree was that?

 

[lxskllr]

Isn't that a variation of a triple hinge? I don't see why the wood has to be completely gone. Just needs to be thin enough to move when pressed.

 

[cory]

afaik with the triple hinge, each hinge of the triple hinge will break just as readily as a single hinge but they break sequentially thus giving more time for remaining holding wood to hold. My 2 cents

 

[davidwyby]

So a 'pocket' that is more voluminous than a single kerf?

Yes…originally I was thinking just a kerf but then added the triangular part to the rear.

 

[davidwyby]

I think a trench cut or sizwheel vee that goes all the way across the face below/in front of the hinge might be better. The lower part of the hinge is theoretically bending fwd. We need to let in move enough that it doesn’t break but hold it back enough that it is forced to flex.

I think the upper half of the hinge might swing more to the rear and need space to collapse into.

 

[lxskllr]

afaik with the triple hinge, each hinge of the triple hinge will break just as readily as a single hinge but they break sequentially thus giving more time for remaining holding wood to hold. My 2 cents

Is that the idea? I thought it was to give everything room to move so there's less rigidity in the structure, and all the components tend to stay intact longer.

I was trying to think of a desktop example. Maybe a popsicle stick. Put it in a vice with the base anchored, and the jaws a little loose. Push it over. I think it'll go further without breaking than doing the same thing with the jaws clamped. Giving it room makes an arc as it bends rather than a sharp edge where all the force is concentrated at one point.

I could be wrong. It happens sometimes :^D

 

[SeanKroll]

I think some slow-motion video is in order.

I'd aim for thin/ very thin hinges when having multiple, especially the rearmost hinge(s).


If you weld up a log holder, you could do some short sections of log with a slow pull from an MA system or winch.