Spider legs and crane use

[Norm_Hall]

This is a red oak crane removal we did last year using 4 spider legs. It weighed approx. 3,500 pounds. It was hollow, that's why it dropped when I was about 1/3 of the way thru the cut (strate cut). The limb is over a 5 million dollar home. I am cutting the limb from an Aerial Lift of CT. You can see the upper boom in the beginning of the vid.

1 minute, 14 seconds

http://video.google.com/videoplay?docid=-6779362527685216537

 

[tnttree]

wouldn't play for me

 

[Colin]

Same here.

 

[Norm_Hall]

Here is the landing of the limb. I had to prusik hitch another spider leg (blue one in the low right corner after it's on the ground) on to 1 of the red ones, cause the red 1 wasn't long enough. The red ones are 5/8" tenex, the silver one is 1/2" Amsteel and the white 1 is 5/8" Da-Pro single braid (old New England product, replaced by Nerex).

1 minute, 34 sec.

http://video.google.com/videoplay?docid=-6318928115619744914

 

[Colin]

No go. Maybe there is a lag between uploading it and viewing it.

 

[Norm_Hall]

Thanks guys. I forgot to add some items in the formula. All good now.

 

[Colin]

Nice and smooth!

 

[Norm_Hall]

This is what happens when you don't bypass your bypass cut. The piece weighed 1,500 pounds, the crane operator had a 7,000 pound pull when the piece popped. WOW!

1 min., 24 sec.

http://video.google.com/videoplay?docid=7014210958037521840

 

[Colin]

Not good.

 

[Colin]

I don't do it like that, at all. My cuts are level with each other.

 

[rborist1]

Smooth is the name of the game when using cranes. Nice work with the spiders Norm.

 

[Colin]

Yeah nice, except the last one jumping up like that, oh well, live and learn. The first one was well balanced out, smooth.

Now, I'll take a guess, the first video where you cut off the big limb over the house ... cutting with a Husky 372??

Thanks for showing them, more the merrier, especially crane stuff ... oh and speedlining.

 

[Norm_Hall]

Yes sir, Husky 372 w/24" bar & chain. Love that saw.

Attached is a pic of the holding wood in the catalpa.

 

[Mark Chisholm]

Nice work Norm! It always amazes me how a small amount of fiber can hold the crane back like that.

 

[TackleTree]

good videos. i love videos!

 

[treesandsurf]

norm, I know I'm not to keen on all the terminology here, but when you are talking about the bypass cut, did you basically make sort of a snap cut on the piece but not cross the cuts? or was there a face there? and then a back cut but with some hingwood left??

 

[Norm_Hall]

It's like a step cut or snap cut, no notch. That's not me in the second video. I was the one taking the video. I don't use step cuts, usually. It depends on the branch structure and layout. Most of the time I use a straight cut.