Splicing Kingfisher Dyneema Cruise

[nigel1]

Anyone spliced this particular rope, it's a little different to other covered dyneema in that it has an intermediate layher between core and cover.


Manufacturer describes it as
Dyneema® Cruise ropes are made with a HT polyester braided cover and braided Dyneema® core, it contains intermediate covers to reduce core / cover slippage.



I emailed Kingfisher asking if they had splcing instructions and received this response
"On the Dyneema Cruise product we recommend a braid on braid splice the only difference being there is an intermediate traction jacket which would need removing in the splice area after this a braid on braid splice should be possible."


I queried as to whether they meant a briad on braid splice for core dependent rope, or a normal splice as used on polyester and they advised


"Really as this is a cruising product the Polyester braid on braid splice is strong enough, this is the splice we have always carried out testing on, a core dependent splice should increase break load on this line a little but it’s a more tricky splice. "


I would prefer to use the correct splice, and hope that someone out there has spliced this type of rope and might have some handy tips.


With the intermediate layer removed, it might make the splcie slightly easier as it should create a bit of space between core and cover.

[s/v Jedi]

Originally Posted by nigel1

Anyone spliced this particular rope, it's a little different to other covered dyneema in that it has an intermediate layher between core and cover.


Manufacturer describes it as
Dyneema® Cruise ropes are made with a HT polyester braided cover and braided Dyneema® core, it contains intermediate covers to reduce core / cover slippage.



I emailed Kingfisher asking if they had splcing instructions and received this response
"On the Dyneema Cruise product we recommend a braid on braid splice the only difference being there is an intermediate traction jacket which would need removing in the splice area after this a braid on braid splice should be possible."


I queried as to whether they meant a briad on braid splice for core dependent rope, or a normal splice as used on polyester and they advised


"Really as this is a cruising product the Polyester braid on braid splice is strong enough, this is the splice we have always carried out testing on, a core dependent splice should increase break load on this line a little but it’s a more tricky splice. "


I would prefer to use the correct splice, and hope that someone out there has spliced this type of rope and might have some handy tips.


With the intermediate layer removed, it might make the splcie slightly easier as it should create a bit of space between core and cover.

Something tells me this isn’t a 100% Dyneema core. What is the diameter of the rope and the advertised tensile strength?
With that info, we can look at a comparable Samson rope and what splicing instructions that has.

[nigel1]

Hi Nick


Diameter 12mm with MBL 5,200kg

[Benz]

I have spliced this sort of rope. The intermediate cover "to prevent slippage" is really just a way to cheaply bulk up the rope: you can make a half-inch rope with a lot less dyneema in the core that way, and it looks really competitive price-wise, but it's just a gimmick.
Nonetheless, since you probably have it:
You need to tie a knot three or four fathoms back from the end to be spliced, then bunch the outer cover up against it so there's a lot of core exposed, with inner cover still on it. As far back as you can reach, dig the core out of the inner cover with a fid. When you have a length of exposed core, with the inner cover lying all floppy beside it, cut the inner cover, leaving a one-foot flap, which you can taper and bury into the core.
Now when you milk the outer cover back over the whole circus, you'll have essentially a core-dependent rope and you can splice it as you would any other, with the added luxury of having a little extra room in the cover.
For directions on how to properly splice a core-dependant rope, you can go to my website:
https://www.zartmancruising.com/spli...-instructions/
I apologize in advance if the formatting if the instructions is funky: Wordpress keeps changing things up and it messes with my formats...working on it...

[nigel1]

Thanks Ben,

I already had your splcing instructions bookmarked some time ago.
Cheers

[s/v Jedi]

Originally Posted by nigel1

Hi Nick


Diameter 12mm with MBL 5,200kg

Ah, Ben beat me to it… this only has the strength of a 10mm rope that doesn’t have the extra cover. My reference is Samson which has 6,900kg for 12mm Warpspeed and 5,400kg for 12mm MLX3 which has a blended core.

Here’s a video I like:

https://www.youtube.com/watch?v=M6CY2JlaFWg

[nigel1]

Thanks Nick, that video is pretty similar to Ben's explanation.
I did a comparison with Marlow 12mm D2 rope, that has MBL of around 6700kg.

However, the 12mm Kingfisher will work for me, the MBL is plenty enough, plus the 12mm diameter will be better in the rope clutch, and its cheaper

[s/v Jedi]

Originally Posted by nigel1

Thanks Nick, that video is pretty similar to Ben's explanation.
I did a comparison with Marlow 12mm D2 rope, that has MBL of around 6700kg.

However, the 12mm Kingfisher will work for me, the MBL is plenty enough, plus the 12mm diameter will be better in the rope clutch, and its cheaper

Yes, when upgrading lines it’s important to keep it compatible with winches, clutches etc. I like to get a smaller size because it runs lighter with less friction. For a rope clutch I then decide if I would want to replace it anyway (approaching 30 years old) or I just put a length of paracord inside the inner braid to make it thicker in that part of the line that engages the clutch

[Benz]

A better way to keep line costs down but still avoid the double cover is to use rope with a lesser grade of Dyneema, or a blend. Marlow's "Club" is SK75 blended with polypropylene in the core, so it feels and behaves (and splices) the same as their D2, but at a far more affordable price point.
It's my favorite for lower-cost non-stretchy rope.