Fracture Pruning Vid

[Mani]

monkey'd? is this you experimenting with coronet fractures? that second one is perfect.

 

[ame=http://uk.youtube.com/watch?v=BfJlkmb9ljo&feature=related]http://uk.youtube.com/watch?v=BfJlkmb9ljo&feature=related[/ame]

[Dean Lofthouse]

Thank god for Health and Safety.

 

Good job there were no gas or electric services nearby.

 

Does make you realise just how strong a trunk is, when subjected to a 360 like that, a bit of wind will be nothing in comparison

[David Humphries]

How didya know

 

 

 

 

Interestingly, I am in the process of trying to work on a system to fracture break monolith trunks down to safer target height, as opposed to just coronetting.

 

This obviously puts unwanted tension on to the root plate, which is closly monitored during operation.

 

The pictured set up (using tractor and base set pulley as purchase) doesn't work, any constructive thoughts welcomed.

[Paul Smith]

Monkeyd, does the top pic show a pulley at the base with the line running to the top of the stem?

 

I don't know if this would work. If you fabricated a pulley onto the end of a scaffold pole you could use it as a redirect point to pull the top of the stem side ways and not down. Plunge cut a hole for the pole to fit into so it stays put while you tension the line. The bigger size of the pole the greater the angle.

 

The pole would go where you want the fracture and I suppose you could help it along by doing different angled plunge cuts at the proposed fracture site.

 

Don't know if i have made it clear?

[David Humphries]

Monkeyd, does the top pic show a pulley at the base with the line running to the top of the stem?

 

 

Don't know if i have made it clear?

 

Yes it did. Decided against it and straight pulled with the Tractor instead.

Which is why too greater force is potentially created on the tension side of the root plate.

 

 

Not really clear on what you are proposing.

Can you do a diagram?

[Paul Smith]

Please excuse my crap drawing! This is not to scale! Hope this explains better?

[David Humphries]

Please excuse my crap drawing! This is not to scale! Hope this explains better?

 

Thanks for the input Deerman, I was sure that's what you meant. Out of interest what would stop the pole from being pulled out?

 

 

 

 

 

 

 

 

 

 

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[skyhuck]

Thanks for the input Deerman, I was sure that's what you meant. Out of interest what would stop the pole from being pulled out?

 

 

 

 

 

 

 

 

 

 

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Do you not mean pushed in or bent??

[Paul Smith]

You would have to plunge cut a hole and if you did vertical plunge guts around the stem at different angles this might help it fracture? There would be a lot of tension on the line.

[David Humphries]

Do you not mean pushed in or bent??

 

 

I guess I do mean bent, but not really sure where all the forces would actually be.

 

 

 

 

 

 

 

 

 

 

 

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