Trying to lighten my load by a few ounces....anyone ever used 3/4" webbing for tree straps?
I have 24 ft from REI climbing department, I weigh 160lbs....
thanks,
mike
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Trying to lighten my load by a few ounces....anyone ever used 3/4" webbing for tree straps?
I have 24 ft from REI climbing department, I weigh 160lbs....
thanks,
mike
Check with REI on the breaking strength. Best rule of thumb is 10-to-1.
Also, if it's nylon, it will stretch. Not good.
Rain Man
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nylon= big nono. Stretches... and stretches.. and stretches. Ive dropped almost two feet over the course of the night back when i used nylon. If you want light weight, try polypropylene as it is (i believe) lighter weight than poleyester.
so......the stuff I got at REI is nylon??? dang if that is the case....
Taken from http://www.strapworks.com website:
3/4 Inch Flat Nylon facts:
Thickness of 0.070 to 0.075 of an inch
Breaking strength of 2375 pounds
Melting point of 480 degrees Fahrenheit
3/4 Inch Lightweight Polypropylene facts:
Thickness of 0.040 of an inch
Breaking strength of 450 pounds
Melting point of 330 degrees Fahrenheit
3/4 Inch Heavyweight Polypropylene facts:
Thickness of 0.060 of an inch
Breaking strength of 675 pounds
Melting point of 330 degrees Fahrenheit
Patterned Polyester facts:
Thickness of 0.04 to 0.065 of an inch
Breaking strength of 2598 pounds
Melting point of 500 degree fahrenheit
I made some 20mm wide tree straps from 750kg mil spec polyester webbing for wrapping round the big old gnarly caledonian pines I regularly hang from.
No stretch detectable and 14g/metre.
I don't use them on soft barked smaller trees though, they mark.
great stats on the webbing.....
It looks like I got the wrong stuff....
This is a great question. Whats the thinnest lightest webbing for tree straps that can handle the stress and load.
For example on strapworks.com it lists polyester webbing; the smallest is 3/8 inch. thickness of 0.040 of an inch, breaking strength 1500 pounds.
I'm thinking further weight savings is possible by using longer amsteel whoopies and shorter webbing for tree straps. I can avoid using metal biners to clip the webbing, and be sure the toggles are light as possible.
Let's remember that the 1" width webbing was selected to protect the tree, not because it was required for strength. 3/8" webbing may not protect a thin bark tree.