Testing protocol for splicing methods

[RyanCafferky]

With all this Tuttle stuff, it has me thinking about what should be the proper protocol for testing splices? What is the current protocol? Just a slow straight pull for an eye to eye? Or are they normally girth hitched in a short configuration like Tuttle posted?

What is a more likely failure at the highest/lowest load? A high load slowly applied, or a repeated load/unload scenario for hundreds of cycles at loads of varying amounts and then a hard fast pull to failure? That seems to me to be a more realistic way to test splices. Test them how they will be used and their most likely way to fail. Even if the numbers put on splices for MBS are the ones in the optimum configuration, it seems like new splicing methods or alternative methods should be tested in a more rigorous method before being sent out by the thousands to be tested in the real world environment by unwitting test dummies.

Thoughts?

 

[tuttle]

Your right to question these things.

I would like to offer some answers, as for cycle testing, the viper prusik I had with no whipping was used 100's of times, to much hassel to video - so its just something I have done.

Cycle testing on a machine would heat the core and it would harden and snap, the pictures would look the same.

I have cycle tested the core alone, at 250>500kgs x 20 rapid pulls.

Have you ever tried to pull apart a splice by hand? or using pliers? it takes some doing..But that is my stuff.

Testing is testing, unwitting? I'm trying my best succeed not be knocked down.

21kn was the result - hows that stand up?

 

[MooseHead]

The splice in the video was used 100's I times and did not have any lock stitching? Just curious if misread that.

 

[tuttle]

No, the splice in the video is un-used and new, I had another that I made exactly the same without whipping 3yrs ago.