Climbergiorgio

Hi Erik, do you have any pic or video of your jobs (youtube, pic...)? Do you also have any video of your technique? Is the one where you put the sawdust on the centre of the piece you're cutting with the chainsaw? I'm asking 'cause I didn't understand very well from what you wrote about your technque. Thanks!

I cut slices with 1.3 mt diameter with no wedges. But in this case I used the wedges to put the belt that tied the blocks. It was not possible to risk to let them fall with no speedline. You can see this by the pic.

Yes, I agree ?

Pay attention to the kind of friction created on the rings. If the angle of the ring is too small, it's not good for your rope. Also pay attention to the heat created on the rings, it's always more than the one created on a bollard

The house in the video is closer to the camera than the tree, this distorts the image, and that house is a old villa with very high ceilings. Here the link where I post some pics so you can see them:

It's cool that you know the exact high of the tree even if none of you were there... I've already said that using a wide angle camera, it modify the real size. It was not possible to use wedges and let the pieces go with no control, 'cause the tree was on a slope, there was the risk to make them rolling to the street.

In the drawing you can see what I mean. In this way I have about twice workload, with the same rope. If I'm using 2 Fiori's rings (A) and I have a load of 4 kN, on the rope 1, I keep 0.65 kN to control the load's descent. These rings heat up less, and to have a large radius allows you to use all the workload of the rope.

@Mark BolamI found the video! You asked me: "You could add comments about how you would do the job now that more advanced techniques are available (I can’t think of many though!), and you’re a bit older, wiser and possibly heavier, like the rest of us!" That's my answer: I think that the only think I'd change is that before to make the big "plates", I'd make some pieces using the double whip technique with big rings... in this way I'd decrease load on the friction and I'd have less load on the rigging rope, and the job would be faster ('cause I'd have bigger pieces)

Ahahah I think @Steve Bullman is 140kg with Simona in his arms ? Yes I could say what I'd change... I should find the video, I didn't post it, I'll try to look for it. Thanks

Thanks, you're very kind, but the video of the sequoia is quite old

Thanks mate!! There's not an extended version, it's a trailer of the course about rigging that I do.

Enjoy https://www.youtube.com/watch?v=r4ZRiHRL-J4

I've always been seeing poplar plantations, chosen for its fast growing...depending on the type of tree, you can have different things: with biggest than 22 cm diameter they can have wood layer, smaller than 22 cm they send it to sawmill, smaller than 10 cm it's used for biomass (energy)