4 to one bend ratio

Norm_Hall said:
Very clever.
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The "teardrop" joke reference or the splice? LOL!
I posted that up in the X-Rigging Ring thread and David did some cool replies. There's potential, but there's also the fact that the cordage has to be thinner since it's doubled where the bury makes the round turn, as compared to a larger diameter hollow braid that could fill up the groove in a single pass.
 
oceans said:
there's also the fact that the cordage has to be thinner since it's doubled where the bury makes the round turn.
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But the cordage is half-size only where it has two legs, it's effectively doubled around the ring and, if the bury splice extends the full length of the sling, then all essential parts are double-strength and there is no loss - only the gain of a better splice angle.

It IS such a beautiful thing, that I'm crying teardrops. :rolleyes:

Edit to add: Actually the bury splice needs to extend only to the tree wrap (cow hitch or whatever), since full sling strength is needed only on the unsupported part of the sling.
 
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Since we are all pulling things over with her vehicles despite early warnings of harbormaster telling us not to (I was back maybe seven or eight years ago)
Can anyone tell me how to calculate the pulling forceof a vehicle? Foot-pounds of torque is easily looked up on vehicles there has to be a way to calculate pulling power. Question for the math physics and engineering bufs out there
 
[QUOTE="if the bury splice extends the full length of the sling, then all essential parts are double-strength and there is no loss - only the gain of a better splice angle.
QUOTE]

Are you sure about this? I haven't heard that.
 
I believe what he is saying is that we're talking about a hollow braid rope, here... 1/2" Tenex that is doubled is exactly the same strength (or close enough to it) as a single 1" Tenex rope... it doesn't matter if the two 1/2" ropes are side-by-side or if one is inside of the other. This makes the nifty sling Oceans made (assuming the bury goes all the way through to the other end) just as strong as if he'd made it using 1" Tenex that did NOT have the full length bury and the doubled (rope within a rope) splice. And, it still has the advantage of the cool splice eye.

Did I get that right, RescueMan?
 
baumeister said:
Since we are all pulling things over with her vehicles despite early warnings of harbormaster telling us not to (I was back maybe seven or eight years ago)
Can anyone tell me how to calculate the pulling forceof a vehicle? Foot-pounds of torque is easily looked up on vehicles there has to be a way to calculate pulling power. Question for the math physics and engineering bufs out there
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I'll get my dynomometer right on that come spring
 
Daniel said:
its only 2:1 if you use a single rigging point.
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If you're referring to the doubling of the load at the change of direction point, it's the deflection angle more than just the number of rigging points that matters. You can still have load-multiplication (more than L) at any part of a multi-point rigging. So, while there's some load sharing, in the illustration below the four rigging points are "sharing" a total of almost 4 times the actual load (3800 lbs).

Complex Rigging Loads.webp
 
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