Riggs
Participating member
- Location
- Bryn Mawr , Pa.
Here's some crane shots of double choking , lifts the logs straight up , and keeps the one top stable .
crane pics
- Thread starter Riggs
- Start date
- Location
- Home of the New Jersey Devils
Sorry Glen, but these are all that I've got on the web.
Riggs
Participating member
- Location
- Bryn Mawr , Pa.
Mark , double strapping that Poplar log let you cut straight through it , right ? Lay the saw in there and just GO ! Lift the log and set the saw on the pole . No hiding or ducking !
Here's a link to a couple pics I've gotten over the years. The large dead oak was my first crane removal, about 10 years ago. http://groups.msn.com/HomeRepairHelp/treeclimber165spics.msnw
Wish I had more, but seems like a camera was never on the list of important stuff to bring to a job.
Wish I had more, but seems like a camera was never on the list of important stuff to bring to a job.
- Location
- Home of the New Jersey Devils
Thanks for the pics, Craig.
Question, how do you like running more than one part on the load line? I usually run a single line rather than two or three parts, so that I can get the cable raised and lowered faster. Did you need to run multiple block for the load? Just curious. Anyone else have ideas about this?
Mark,
You are right more then one part load lines are slower, but it was not terribly slow. The crane just came that way. First time working with this operator so I didn't know what to expect for equip. At 125.00/hr. and many years of experience I couldn't turn him down. The 2 tree's took 4 hours 12 picks from start to finish. If we would have had more room for a landing area we could have done it in far fewer picks.
My bud, Frank Chips, was telling me about a guy he saw using multiple balancers and picking out a large muti-stem decidious tree whole. He said the tree sucked together like a piece of paper being crumpled up and went up without a hitch.
You are right more then one part load lines are slower, but it was not terribly slow. The crane just came that way. First time working with this operator so I didn't know what to expect for equip. At 125.00/hr. and many years of experience I couldn't turn him down. The 2 tree's took 4 hours 12 picks from start to finish. If we would have had more room for a landing area we could have done it in far fewer picks.
My bud, Frank Chips, was telling me about a guy he saw using multiple balancers and picking out a large muti-stem decidious tree whole. He said the tree sucked together like a piece of paper being crumpled up and went up without a hitch.
Four Poplars we did a couple of weeks ago. The 4 trees = 10 picks (2 trees =3 picks each, 2 trees = 2 picks each, 4 trees in total) and 2 hours work time for the crane and operator, another 2 hrs bucking (firewood left on site) and final clean up, 4 hrs total.
http://www.pbase.com/rborist1/crane_2003
http://www.pbase.com/rborist1/crane_2003
- Location
- Home of the New Jersey Devils
Craig,
Thanks for the pics. Looks like the perfect job for a crane- cranes really improve the drop zone!
I was just wondering if there are any standards in place in Canada for using cranes for tree work? It would be great info for all of us to read since many of us use cranes and we are always working to revise our standards here in the US.
Thanks for the pics. Looks like the perfect job for a crane- cranes really improve the drop zone!
I was just wondering if there are any standards in place in Canada for using cranes for tree work? It would be great info for all of us to read since many of us use cranes and we are always working to revise our standards here in the US.
- Location
- central virginia
last thursday, i did a crane job where we removed a large multistemmed maple from a back yard. One of the leads had broken out and fallen on the neighbors house. I set two chokers and the crane lifted the storm damaged lead out in one piece.
anyways after that we took out the remaining spars from the rest of the tree using just one choker and crossing cuts.
I was talking to one of the foreman at my office later and he told me to make my front cut toward the crane and then the back cut towards me about a foot below the first one so the piece would have a kind of beaver tail and just slide up and away from the remaining spar.
he told me it was better than making two crossing cuts from the sides because the crane could snap it off easier without any side to side motion.
does anybody have an opinion or ideas on this? I was told it worked really well.
anyways after that we took out the remaining spars from the rest of the tree using just one choker and crossing cuts.
I was talking to one of the foreman at my office later and he told me to make my front cut toward the crane and then the back cut towards me about a foot below the first one so the piece would have a kind of beaver tail and just slide up and away from the remaining spar.
he told me it was better than making two crossing cuts from the sides because the crane could snap it off easier without any side to side motion.
does anybody have an opinion or ideas on this? I was told it worked really well.
- Location
- Ontario, Canada
I have an opinion but I've never used a crane.
If you look at the attachment you might see what will occur.
I think the back cut would be better placed high because it will leave a ledge blocking the tree from coming back.
With the back cut low it leaves a ledge where the tree must make a climb before clearing the spar.
The side cuts are always a good idea regardless if a crane is being used.
If you look at the attachment you might see what will occur.
I think the back cut would be better placed high because it will leave a ledge blocking the tree from coming back.
With the back cut low it leaves a ledge where the tree must make a climb before clearing the spar.
The side cuts are always a good idea regardless if a crane is being used.
Attachments
It sounds like the other forman are talking about a step cut. This is what I use on most cuts and it works very well and is very predictable. I have seen other climbers here trying to match their cuts only to get the saw stuck or tell the operator it's cut and it is not resulting is large dynamic loads on the crane. A tiny bit of fiber can hold tremendous loads but with a step cut they slide right off.
