The strop is very easy to replace on this one. That can't be good for the line and might lead to hidden chafe. I made the blue one because I wasn't entirely comfortable with how the others will tend to open up the braid under load. If you aren't comfortable about splicing dyneema yourself, someone else could make the strop for you without you having to send them your sheet. You could even carry a spare and swap it out on the beach. When it wears, the strop can be easily replaced. The advantage of the green version is that the strop can be made separately from the sheet (see below). If it ever wears or is damaged, the pigtail will need to be cut off and a new one spliced on. It must, however, be spliced directly onto the sheet. I like the red pigtail because it is the neatest and smallest. Therefore, I think any of the three would be practical. Even if the knots cut the strength in half, you'd still have a 5x-10x safety margin. 1/8" Amsteel Blue (the dyneema line I used) rated minimum strength is about 2300 lbs. 7mm Bzzz Line (what I used in the prototypes) has a rated tensile strength of about 1700 lbs. Strength isn't really an issue as the load no where near approaches the breaking strenght of these lines. It also turned out to be the easiset to make, given that the Bzzz Line I used as sheet prototype is difficult to pierce. It should be stronger than the green and nearly as strong as the blue. It is the smallest and tidyest of the three. Then I took a strop made like the green one and eye-hitched the small eye to the sheet. Here I've put a locked brummel eye in the middle of the sheet. The third option (blue) is perhaps the strongest, but also the bulkiest. I pierced the sheet off-center (to capture more of the strands), pushed the small eye through, and eye-hitched it in place. Here I started with a dyneema strop with a locked brummel eye splice on each end (one large and one small). The second version (green) is less permanent. You can attach the sheets to the clew with an eye-hitch. There's a large locked brummel eye splice at the other end. The pieces are then secured with a locked brummel and bury. The red dyneema pierces the hollow-braid sheet, wraps around, and goes back through the same hole. The red pigtail below is close to what is described above. Here are a few options that come to mind and that I prototyped this morning. Pass the 3mm dyneema through the core in the same direction as the first pass.īury the tails / splice together into one another for a foot to 18" depending on your boat and how close the clew gets to your blocks. Wrap the 3mm dyneema around the core a couple times.
Take a fid to the center of the spin sheet.
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