Blocking....

[Tony Croft aka hamadryad]

You got some toms on you kiddo!

 

rigging well sorted.

 

top draw!

[Big 'Ammer]

Quality, as always Reg!

 

On the Dual device, does the yellow strap do all the work of holding it in place on the tree, and the blue strop below act as a back up?

 

Or is the blue strop doing a bit of grabbing on as well?

 

Have you found any movement of the device with those big chunks?

 

Cheers.

[RC0]

Thanks again for the all the kind words:thumbup1:

 

Quality' date=' as always Reg!

 

On the Dual device, does the yellow strap do all the work of holding it in place on the tree, and the blue strop below act as a back up?

 

Or is the blue strop doing a bit of grabbing on as well?

 

Have you found any movement of the device with those big chunks?

 

Cheers.[/quote']

 

For removals like this one the device is cut-in to the tree, so the strap really just holds the device in the notch. The impact of the load is therefore shared by the top corner of the notch and the strap.

 

The blue 3/4 double esterlon is there for backup, in the event of user-error or in the case of a faulty or damaged ratchet/strap that a person might still carry on using regardless.

One day it'll probably play its part, for someone....although I really hope it never come to that.

 

If the device is cut-in, positioned and tightened correctly in sound wood, then there should be no movement. Thanks

[Big 'Ammer]

Cheers Reg.

[jamesw]

Awesome rigging and i take my hat off to you:adore:. Just an observation and not in any way a critism but was there no way the ground crew could have got the trailer under those lumps? just thinking they could have made life easier for themselves and less sawdust

[RC0]

Awesome rigging and i take my hat off to you:adore:. Just an observation and not in any way a critism but was there no way the ground crew could have got the trailer under those lumps? just thinking they could have made life easier for themselves and less sawdust

 

James, that would make a lot of sense, but Ben had arranged to deliver the logs cut small, and there just wasn't lots of room to work and cut big logs on that trailer. Thanks

[Doug Blease]

Sorry Doug, too much liability in regards to gear and CTF, not even if you paid me. I could easily quote other people on the matter, but I dont think thts what you're asking. Some very well written and easy to understand articles on Paolo's site: Arborist research and training: ergonomics, tree rigging, climbing equipment , and of course there's the HSE rigging research which is free to download.

 

FYI the Lowering lines are Yale Polydyne 5/8; Yale double esterlon 3/4 slings; and the blue ISC 3/4 block. If you do a little research on the equipment, weights and fall factors you'll soon be able to make your own mind up. Sorry I cant help on line, but I'll be at the AA show if you want to ask me anything in person. Thanks again

 

Thanks,

 

Your right, thats not what I was asking .

It was more an interest as to the amount of BIG work you would expect the components of the rig to take before replacing. Therefore an economics question rather than an official one. Surely the wear and tear aspect of your gear is an important financial factor, the majority of us are not testing our gear to such limits, therefore expect them to last longer.

 

All the best

 

Doug

[Peter]

If you remain with the SWL, then you maintain a high number of cycles to failure.

 

Exceeding the SWL is like playing russian roulette with your rigging gear, you have no idea when or if it will fail.

 

Therefore the size of the rigging work is irrelevant, as long as the equipment and techniques used ensure that you remain within the SWL at all times.

[Stephen Blair]

big is best in my book, if i can carry it i will use it, but thats because of my lack of knowledge on the physics side of things.

[Ian Flatters]

big is best in my book, if i can carry it i will use it, but thats because of my lack of knowledge on the physics side of things.

 

If it breaks you went too heavy:thumbup: