Skylining/ high-leading 450 pound micro chipper into forest

[SeanKroll]

Not sure on nomenclature.

Thoughts on wire rope or 5/8" stable braid as a skyline. If like to move the chipper about 75' across the forest. Tall trees are around. Headed downhill to work site, then back up to the road at the end.

I could probably reduce the weight by 100 pounds by detaching the feed and discharge chutes which could be carried in.

 

[Burnham]

Shouldn't be toooo hard. I'd go with the rope, myself. Lots of rigging to set it up...and you'd need some strong pull available to both lift the skyline after the load is attached and to retrieve it back uphill. A bit tricky to keep the load fixed under the carriage as the skyline is hoisted, then released to run downhill, then fixed again to lower the skyline, but I can visualize ways...bet you can too, Sean.

Pics!

 

[SeanKroll]

I need someone with some good math (or the Google) to calculate lateral loads.

I think that with two people with intercoms with two power sources for tensioning, it should go well.


As a starting point, I hope to just move the chipper cross-country, maybe with some MA or pull rope on a machine to help move it. Lots of ferns, and somewhat uneven ground.




Side note, just got another pruning job where the micro-chipper will mean no dragging.

 

[Burnham]

Maybe move the chipper on a smooth bottomed skid of some sort...like a small jon boat? Or a purpose-built plywood sled?

 

[lumberjack]

You need a number for line tension to suspend the load, which depends on the weight and the angle of the line. After you have that you need the angle at each end point and you can calculate the component vectors from the known resultant vector.

 

[Burnham]

Orrrr...just use big as hell rigging and hope for the best .

Usually works .

 

[Mick!]

 

[Burnham]

It happens again...B is the lost old man not getting a reference. Mick is too clever for me .