A friend of mine rigged up his whoppie slings with 7/64 Amsteel Blue. He said that it stretched on him quite a bit. Would thicker Amsteel Blue help it not stretch as much?
thanks
A friend of mine rigged up his whoppie slings with 7/64 Amsteel Blue. He said that it stretched on him quite a bit. Would thicker Amsteel Blue help it not stretch as much?
thanks
Last edited by threeoten; 08-03-2011 at 14:29.
Amsteel has about 1% stretch at 30% of its breaking strength. Sooo If your friend weighed 420 pounds then the rope could have stretch a millimeter or two. More likely the slings were not set up correctly or the bury was no "milked" to make sure that it was gripping the line correctly.
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I second that. Amsteel stretches so little...When i first took a swing in my slings the bury had to "settle" and it dropped about 1 inch after that i make sure to milk the bury well and give it a tug to preset the bury.
No stretch here other than the nylon hammock itself. The rope stretch at the lengths I am using and weight is so small its insignificant
Is 7/64 AmBlu suitable for a whoopie hang? Or should I go with a thicker diameter?
7/64" is plenty strong enough for whoopies and is what most people use, the breaking strength of 7/64 is like 1600lbs
boot
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I would venture to guess that the majority of us hanging on Amsteel Blue whoopie slings are using 7/64". Samson reports an average strength of 7/64" at 1,600 pounds. They also claim "AmSteel® and AmSteel®-Blue Whoopie Slings have a break strength of 60% of the published average ROPE break strength." Therefore, if spliced correctly, your 7/64" whoopie sling has a strength of 1,600 lbs * 60% = 960 lbs. If hung at or near the magical 30 degree suspension angle, 7/64" should be plenty strong, even accounting for dynamic loads. However, if you are at the heavier end of the body weight spectrum, jumping up to 1/8" Amsteel Blue will give you more peace of mind.
--Tim
I have made slings for some of the biggest hangers here, if your over 450 pounds then consider 1/8th otherwise 7/64 is more than good enough.
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How long of whoopies do you all use (max length)?
I corresponded with Samson Rope about whoopie slings and they said that 60% was probably too conservative and testing showed it to be more like 80%.
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