polydyne rigging line ?

treemonger

treemonger

Just recently purchased two new polydyne rigging ropes a 1/2x300 and a 5/8x300 after using them both on a few jobs I was reading that they are not recommend for natural croch rigging witch I rarely do with the 5/8 but the 1/2 i do all the time. Will I just get less life out of line or could their be more of a chance of failure due to the friction let me know your thoughts thanks
 
get some arbormaster for natty work.....By the way you climbing some tall ass trees....300'ers wow, that's some long rigging rope.....;)
 
treemonger said:
Just recently purchased two new polydyne rigging ropes a 1/2x300 and a 5/8x300 after using them both on a few jobs I was reading that they are not recommend for natural croch rigging witch I rarely do with the 5/8 but the 1/2 i do all the time. Will I just get less life out of line or could their be more of a chance of failure due to the friction let me know your thoughts thanks
Click to expand...
As far as failure due to friction I know all ropes have cycles to failure ..I personally try and run pulleys for long runs in tall trees keep the heat on the porty. I've even heated up xrings where I could feel some serious heat coming off ..not quite burn you heat but very warm!
 
Same on the rigging rings....and I use a single Xlarge rigging ring for a lot of rigging apps....they can take a lot of beating ropes won't last long with the bend radius but hey know your gear....I change out ropes often...it's cheap...
 
Polydyne is my favorite for dropping big wood near the end of removals, when letting it run is not an option. Often times using two ropes, two blocks, two lowering devices ala Reg Coates. These are short hanks. I having a problem with polydyne twisting like a pretzel when letting long lengths run no mater the device. I never dry crotch but I imagine the twisted up mess that would make. Maybe it's my groundies, but I think it has more to do with the dynamic properties of the rope. I have to milk the crap out of it to get the pretzels out.
 
I have a short piece of 1/2" polydyne I use, came from a longer piece....it has been milked and all twists are out...works a charm on medium stuff negative blocking...I would never use it near obstacles it stretches too much....I use samson stable braid for negative blocking around obstacles.....polydyne glazes bad natty crotching....I know that is how my 1/2" became a short piece....:eek:
 
Another issue with double braids and natural crotch rigging is the unequal friction between the cover and the core. The cover drags while the core moves more freely. Hence, the load is not as evenly distributed. Kinda wasting a good rope in a poor application.

Plaited, or twisted lines without a core are best. 16 strand climbing lines will work, but I find the stretch characteristics unsuitable.

Tony
 
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