What size would you feel is adequate for safety. I can imagine some serious load are applied when camming over, especially toe hooking.
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What diameter amsteel for Predator platform daisy chain?
- Thread starter bowhuntr09
- Start date
tyson12590
Well-Known Member
I have seen people use 7/64", but I went with 1/8". It is super solid. Remember that if you make your daisy chain a certain way then you are getting the strength of two strands (Minus whatever percent you lose from the locked Brummel splices). I feel very confident with the 1/8" and it is plenty sturdy enough to be able to throw around big trees.
I'm doing all my sticks in 1/8" but was thinking I needed something more for the Platform. The working load of 1/8 is I believe 600lbs. I'm sure thats plenty until I consider the camming and toe hooking aspect.
tyson12590
Well-Known Member
Im not sure what working load number you are referencing and I am no amsteel expert but the minimum breaking strength is 2300 lbs, which would be 4600 with a double strand daisy chain. Even if you subtract 30% for the splices, that is still super heavy. I am not sure how that would translate to working load. You have to be confident in what you choose, but I have 100% confidence in the 1/8" and I am over 200 lbs.
working load on amsteel according to the manufacturer is calculated as 1/5 or 20% of the breaking strength. So assuming your doubling the strand numbers at 4600 -30% for splices would leave a working strength of only 644lb. Thats a far cry from the breaking strength and my guess would be the camming function could exceed that.
tyson12590
Well-Known Member
Good to know. Thanks!
Gumbymedic
Well-Known Member
I use 1/4" on everything; bridge, sticks and platform. I know in this ultralight universe we live in now that it's probably "overkill" but, it's not like 1/4" is very bulky or heavy to begin with. And I never have to wonder if the rope holding me up is strong enough.
I’m using 1/8 as well, the difference in weight and bulk is negligible so I figured go with the stronger rope.
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Anyone know the equivalent specs for a lone wolf strap and cam buckle for a fair comparison? My sense is that a 1/8" daisy chain of amsteel is significantly stronger than any tree stand or climbing stick strap/cam buckle on the market (that comes stock).
As far as caming over, with an ultra-strong and thin amsteel rope, probably half of the cam over force goes into compressing the bark and wood (which is probably what you want to make it dig in, and amsteel is a lot stronger than wood).
As far as caming over, with an ultra-strong and thin amsteel rope, probably half of the cam over force goes into compressing the bark and wood (which is probably what you want to make it dig in, and amsteel is a lot stronger than wood).
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