Amsteel to StaySet halyard test
 

I spliced 1/8 inch Amsteel to 1/4 inch StaSet. This is a scale model of 3/16 Amsteel and 3/8 Double Braid. A few tricks were required to make it work but it worked really well. I tested it by tightening it between two winches about 4 feet apart. I cranked on my 46 power winch pretty hard and could twang a note higher than an open G guitar note as compared to a guitar tuner. The StaSet was about 10% thinner than it started out when under tension. No sign of any movement on the splice. I am guessing I was close to breaking strength on the StaSet. I can write it up if anyone is interested. I have not actually done it with the 3/16 & 3/8 lines but I would think it would be easier than splicing into 1/8 Amsteel.

Yes
 

Hi again,
Lovely, though "pretty hard" is not an engineering standard. If you'd like to make several samples, I could arrange to have them destruction-tested. Use New England rope, please, as they'll do the tests. A typical 35lb handle load on a #46 winch will get you about 1,600lbs, which might be only 50 to 60% the strength of the Spectra portion, or less, depending on the grade. What were the end terminations?
Let's follow through on this. Be in touch with me when you are ready to send samples. Meanwhile, we'd all love to hear about the details of the splice.
Fair leads,
Brion Toss

I pulled on it "a little harder" and it broke the StaSet probably right where it entered the winch.
I made a video. http://www.youtube.com/watch?v=WrxrA-4hA30 I can't imagine it needing to be stronger than that. The winch is a Barient 22 so not as powerful as the one on my boat thus the struggling you see as I try and break it. This stuff sure is strong!

The termination on the Amsteel is a brummel splice and it is attached in this video to a padeye with a Soft Shackle that I made.

Unfortunately, I had neglected to put any whipping on the splice and it opened up a bit on the recoil, which I guess is understandable.

Amsteel is a Samson product so not sure about the test splices.

Allen

Wow!
 

Nice work! Looking forward to seeing splice details.
Fair leads,
Brion Toss

Thanks. There is one aspect of the splice I want to change or else I would be ready to write it up. Hopefully I will get that done today.

I finished the write up on the Amsteel to Sta Set halyard splice and have posted it on my web site. Brion, thanks for your encouragement and help.

The specific example I posted splices 1/8 inch Amsteel to 1/4 inch Sta-Set but this would scale to 3/16 inch Amsteel and 3/8 inch Sta-Set. It is easier to make in the larger size particularly using Brion's splicing wand.

I pulled a sample until the 1/4 inch Sta Set broke and have cycled another splice several times to over 1,000 pounds.

http://L-36.com/halyard_splice.php