Amsteel Blue Brummel Question

[John Stone]

I'd like to use 5mm amsteel blue for the outhaul pendant on my multi purchase outhaul on my 36' 16,000lb cutter. I am unclear about the difference between the locked brummel and the modified brummel. My question is what is the appropriate splice for the two eyes on the end of the pendant? The purchase part of the outhaul is made up of sta-set and it is anchored to the forward end of the boom with a short continuous loop of 1/4" amsteel blue.

Regarding the pendant, I am thinking I would use one of the brummels for an eye splice and then cow hitch it around a shackle attached to the moving part of the purchase (inside the boom). I'd run the amsteel out the end of the boom and make another brummel eye splice to cow hitch the line to a captured shackle. That way, I can replace the shackle if it wears without replacing the amsteel.

I am new to dyneema but have already found it to be fascinating line considering the double braid splices I have been making. I am a little unclear on the difference between the locking Brummel and the modified Brummel and which is appropriate for what.

Thanks for any thoughts or suggestions you might have.

[Brion Toss]

Hi there,
I don't know what "modified Brummel" might mean, but if it doesn't lock, it is decorative. How big is that loop, and how are you forming it? Sounds like a great application for a soft shackle.
Fair leads,
Brion

[John Stone]

Brion
The term modified Brummel comes from Coligo, I think. Here is the link. https://m.youtube.com/watch?v=IxSi8igfChk

I watched how you made the locked brummel on an old video you made. You mentioned the spectra was newly developed so perhaps new improved ways of making the splices have been developed.

The loop only needs to be big enough to cow hitch 5mm. So I am think 2-3" long.

I have also seen conflicting info on when you need to lock stitch eye splices in 12 strand dyneema. Some info I have read suggest stitching the bury and whipping at the throat. I recall other info suggesting lock Brummels don't require it. Guidance?

Thanks.

[benz]

Hi John,

I think 'locked' and 'modified' (and 'mobius', no doubt, as well) are all different names for making a Brummel when you only have one end of the line to play with. What I like to do is brummel, bury, then simply put a whipping around the throat. Keeps things tidy, since I've seen the bury start to wiggle its way out downstream of the brummel. This on lines that get flopped around a lot. Brummel stays tight, bury moves a little. If you're whipping anyway, then the Brummel is kind of overkill, but I like to do it anyway. I rarely bother lockstitching along the bury, though.
Ben

[John Stone]

Thanks Ben. Good info.

[allene]

Originally Posted by John Stone

Brion
The term modified Brummel comes from Coligo, I think. Here is the link. https://m.youtube.com/watch?v=IxSi8igfChk

I watched how you made the locked brummel on an old video you made. You mentioned the spectra was newly developed so perhaps new improved ways of making the splices have been developed.

The loop only needs to be big enough to cow hitch 5mm. So I am think 2-3" long.

I have also seen conflicting info on when you need to lock stitch eye splices in 12 strand dyneema. Some info I have read suggest stitching the bury and whipping at the throat. I recall other info suggesting lock Brummels don't require it. Guidance?

Thanks.

This is a tad old so sorry if you have solved it already. Basically there are two kinds of eye splices in Amsteel, a brummel and a simple splice with a lock stitch. The brummel can be done easily if you have both ends or with one end using various tricks such as in the video or on my web site HERE

They both work find and the strength is really determined by the taper. The bury and taper shown HERE work fine and are easy to accomplish.

Allen

[John Stone]

Thanks Allen. I was able to sort out the differences in the two splices. After making a few splices I now understand why John Franta and Colligo Marine calls it a "modified" Brummel. What I did, basically, was to splice the brummel as recommended by Colligo, then locked stitched it with a whipping near the throat as BenZ recommended. The more I experiment the less I think the locking is required especially if the line/shroud is under constant tension. But, for those lines that can be made slack I am not sure if the brummel can come apart though it seems like it should not be able to. Without more specific information or additional personal experience with it I'll continue to incorporate the whip-lock (?) for lines than are often slackened till my knowledge increases.

Thanks again for the reply.

[allene]

I have tested both splices to failure as have others. They are both strong. Personally, I use the brummel if I have a lot of splices to do and the stitched if I only have one. One method is easier to do and the other easier to remember

I would not use a splice without one or the other locking mechanism unless it was very long.