Thread: Heli Logging

This was the style of harvester I had in mind.

I suspect it is for pulp logs judging by the size.

[ame=http://www.youtube.com/watch?v=-YAwSPVdcO8]YouTube - ‪Cat® 314D Hydraulic Excavator with PE-42 Harvester Head‬‏[/ame]

Regards
Paul

Hi Paul, As per the chopper video, hooking a bloke to the wire, thats
what I'm talking about, I drove right underneath them and kept going
so I dont know what they got up to after that. Flyover inspections
are a dime a dozen, I do know that it was not an emergency situation
ie: storm related etc, so assuming it was routine maintenance or
inspection, as I dont think they would be training in a remote area.

Not copper thieves either as the wires were still there when I came
back.

Originally Posted by madmix

Hi Paul, As per the chopper video, hooking a bloke to the wire, thats
what I'm talking about, I drove right underneath them and kept going
so I dont know what they got up to after that. Flyover inspections
are a dime a dozen, I do know that it was not an emergency situation
ie: storm related etc, so assuming it was routine maintenance or
inspection, as I dont think they would be training in a remote area.

Not copper thieves either as the wires were still there when I came
back.

Madmix

Ok, I had no idea choppers were used that way over here. In any event live line working is scary stuff. Once you throw the chopper in too you have an extraodinary recipe.

I think the wires might be steel so that would preclude the copper thieves. In fact I think they are steel, for strength, with an aluminium core for conductivity. Copper is too heavy and much too expensive. Aluminium has only slightly less conductivity than copper.

Regards
Paul

Paul,
It is the other way round the steel is in the middle with an oily layer of material to stop chemical and electrolytic corrosion and the aluminium conducting strands on the outside. Small cables have a fencing wire like core, bigger stuff uses steel rope to take the strain.
Just a bit of info for what is worth.

Originally Posted by A Duke

Paul,
It is the other way round the steel is in the middle with an oily layer of material to stop chemical and electrolytic corrosion and the aluminium conducting strands on the outside. Small cables have a fencing wire like core, bigger stuff uses steel rope to take the strain.
Just a bit of info for what is worth.

Thanks Hugh. I stand corrected, but not on top of the transmission lines even if they do have a steel core!

I believe you are allowed alluminium only cable for low voltage lines (ie 240V from a consumer pole), but the catch then is the span between poles is severely restricted.

What am I doing here? This post was about heli logging. Apologies Artme.

Regards
Paul