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Haul Rope Diameter Question


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#1 aaronf

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Posted 23 April 2010 - 02:59 PM

Can someone explain to me what "Rope Guage" means with respect to the haul rope? I see that many of the lifts listed in the database have a guage of 4.8m. What is this measuring? It sure isn't standard wire guage. Is there a way to relate this to rope diameter? Or better yet, is there a way to relate haul rope diameter to loading on the rope? Finally, is there a reasonable way to estimate the cost of a haul rope? Is there a $/linear m, or $/mm diameter figure that is fairly common?

As always, any help appreciated!

--Aaron

#2 Lift Dinosaur

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Posted 23 April 2010 - 03:18 PM

View Postaaronf, on 23 April 2010 - 02:59 PM, said:

Can someone explain to me what "Rope Guage" means with respect to the haul rope? I see that many of the lifts listed in the database have a guage of 4.8m. What is this measuring? It sure isn't standard wire guage. Is there a way to relate this to rope diameter? Or better yet, is there a way to relate haul rope diameter to loading on the rope? Finally, is there a reasonable way to estimate the cost of a haul rope? Is there a $/linear m, or $/mm diameter figure that is fairly common?


I think the confusion is using the term "rope gauge" to mean "line gauge" which is the distance between the center lines of the haul rope at the towers. This is sometimes also the diameter of the bullwheel. So if a lift has a gauge of 4.8M, that means if you pull a tape measure from the center of the uphill rope to the center of the downhill rope it should be 4.8M.
"Standard wire gauge" usually refers to electrical wire, not haul ropes. Haul ropes are classified by diameter - 1 1/2 inches, 2", 40mm, 42mm, etc. and by their wire composition - 6x19 (six by nineteen)= 6 strands each composed of 19 wires (+ or - x number of filler wires), 6x25, 6x37, etc.
Diameter, composition, cost of steel and shipping all affect the price. I don't know of a "rule of thumb" price - anyone else?
Hope this helps.

Dino

This post has been edited by Lift Dinosaur: 23 April 2010 - 03:20 PM

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#3 aaronf

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Posted 23 April 2010 - 04:18 PM

Ok, that makes far more sense! That also makes sense why I'm seeing a pretty constant number of 4.8m - and also why I couldn't find any correlation to rope diameter!

Appreciated.





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