How to Splice Dyneema Lazy Jacks- Sailing Uma [Step 142]
Вставка
- Опубліковано 10 лют 2025
- Being able to drop the sail quickly and cleanly is quite important when sailing in tight quarters. This week, we remove our old lazy jacks, build a brand new set out of dyneema and low friction rings using a locking brummel splice and walk you though all the steps to make your own.
[UMA SWAG]
www.sailinguma....
Visit our store and get your very own Uma Swag
[ WANT MORE ? ]
Visit / sailinguma
Become a patron to get instant access to The Vault, where we keep our most precious treasures (behind the scenes, bloopers, albums, and more...)
[OUR WISHLIST]
a.co/16beuMa
[ CAMERA GEAR ]
Main Camera: amzn.to/2KRLgPA
Main Lens: amzn.to/2IIvcmH
B-roll Lens: amzn.to/2IH2S44
Mic: amzn.to/2Ls9Yr5
Secondary Camera: amzn.to/2GMs6YX
[ FOLLOW US ]
Facebook: / sailinguma
Instagram: @SailingUma
Our website: www.sailinguma.com
[ MUSIC ]
All our tracks are from: Epidemic sound music
![12,000 Miles with NO Lifelines - Sailing Uma [Step 143]](http://i.ytimg.com/vi/mMa2_TMcWV4/mqdefault.jpg)
![12,000 Miles with NO Lifelines — Sailing Uma [Step 143]](/img/tr.png)
![[How to] Dyneema Eye Splice | Sailing Wisdom](http://i.ytimg.com/vi/UpkqJ4GRfSg/mqdefault.jpg)
A masterclass in splicing. Good explanation/demonstration of the technique, delivered at a good pace, & well filmed. Thank you.
+1
What was that tool he was using?
@@stopthephilosophicalzombie9017 They're called "Rope Splicing Fids"
It's like watching Penn & Teller explain a trick and it still comes out looking like magic regardless.
Hi Guys, I have been watching your videos and am super impressed. I am a land bound former sailor (like when I was VERY young. Was married for 42 years and after his death, I took to cruising so I could continue to be close to the water. Your videos have taught me several things about myself and where I am on my journey. I have several comments to pass on to you regarding your great videos and your “take” on life at sea.
These are things which impressed me....your make do attitude about sailing (ie not wishing you could sail up to a Walmart and BUY what ever you need....You go for quality. Within your budget and “make it work until it doesn’t, anymore. You get. Along very well, at least on camera. You explain things well without being condescending. You understand how things work and how you learned each thing. Your camera work is exceptional, easy to follow and smooth.I especially liked going to Tikal with you (I. Have never made it there in person but you showed me what it is about. ). Your eye for beauty is also appreciated (sunsets, hummingbirds, visits with other sailors).
Aside from your videos I have also watched several other people’s trips and want to pass along a couple of other quotes and r references from my Utube excursions....”Nothing is straight forward at sea”. Also an excellent video about clean oceans and why it is important....”A Plastic Voyage”. (A Sky Documentary). The Ocean is a Special Place
I just finished sewing a stack-pack for my mainsail and I'm adding lazy jacks tomorrow. I'll use this video to show me how to splice the ferrules onto the lines. I love your innovative lock splice and how it is secure without whipping! If you ever come down to Key West, look me up!
Best regards,
Capt. Blackheart Charie
I know im late on this one. But there is a splice for braided line with a parallel core. Down load the “rope splicing app” from premium ropes. Its a great splice and you keep full strength with the core.
Nice video presentation, Dyneema is a game-changing fiber for sure.
Attaching the upper turning block for the Lazy Jacks to the bottom of the spreaders about 12" - 30" from the mast (depending on the length of the spreaders) makes raising & lowering easier. This opens up the slot so the battens pass between them without being 100% into the wind as you raise & lower the sail. Additionally, this keeps your lazy jacks from banging on the mast if you store them forward & down with the sail cover on.
My first time to see a dyneema splice with a lock. "Fine Job!
It never ceases to amaze me how men figured out.. No invented knots that have specific applications I guess all that down time on a very long passage /journey provided them with the time to experiment and figure things out.. Cheers to Uma!
Love your methodology Dan. Splicing the line back onto itself is brilliant.
That splice looks nice. Really nice.
I know that there is more than one way to skin a cat, but we put the top end of the lazy jack halyard under the spreader about a foot or more out from the mast, this helps to clear the sail battens as you hoist the sail in a breeze. Great job on the splices though. I have just knotted mine but will get to splice them all this summer. If both ends of a piece of dyneema are available, I like to alternate which goes through the splice i.e. short end, long end, short end, long end then bury the tapered tail. This achieves the same thing as the loop flipped through and will not (cannot) come undone.
I also like to take any short lengths of dyneema left over from jobs and splice a loop in each end and hang them from the compass guard on the steering pedestal, you never know when they will be needed.
Thanks for taking the time to share.
Cheers.
Wade.
I did the same on the spreaders on my boat (halfway out on the spreader, single spreader rig). Seems to work well.
Thanks. I have a new sail cover and lazy jacks in my immediate future; this will be 100% useful. You do these really well; it's impressive how the standard of UA-cam editing and presentation keeps improving every year.
Dan, I'm really enjoying your technical skills. At 15:13 a gel is being applied to the threads of a screw holding the "strap eye". I'm not familiar with that product so I won't comment on it, but, there's always a "but", after 50 years of working on boats and motors I have found that nothing stops or slows corrosion between aluminum and stainless like a silicon sealer. It actually seals the threads where grease holds the salt and it eventually migrates into the threads and the corrosion begins. I've worked on outboard lower units that were assembled more than 30 years ago with silicon sealer and the bolt threads are still shinny on the stainless and in the aluminum hole, with no salt present. If I remember correctly, Kim, at "RigRite in Warwick, RI." showed me the process over 30 years ago while building a mast in his shop. See you two in the next one!
28cruzin aluminum pop rivets is the best way to go easy to fix if one fails
Pop rivets would work, too. My only concern is water intrusion and extra labor and tools. Aluminum boats are both riveted and welded, depending on manufacturer and location. If that panel needs to be removed later all the rivets would have to be drilled out adding labor and extra tools not usually carried on a crusing sailboat. That's why I would have welded tabs or pads for the pannel mounts
Super helpful, thanks Dan! Definitely going to use this video after I get my hands on some Dyneema!
dyneema is a trademark brand-name but it's becoming synonomous with Ultra-high density polyethylene.
Tim Hyatt, it was first called Spectra , I was making the cases for the first portable tablets in 1990, they wanted to make them bullet proof for the police to use! Spectra was and is used in soft bullet proof vests. They fired a shot gun at the case as a test ...... it worked but destroyed the computer!
Cheers Warren
@@CheersWarren I thought Spectra was a type of Kevlar line.....we tried some of that for tug lines during my time in alaska with the dog mushing community.....it proved to be "too abrasive" when paired up with other lines...would rub right through them under tension...seems dyneema is a direct derivation of the advances in UHMW technology applied as a stranded material....
Well done video Dan & Kika! You have inspired us to repair our lazy jacks. Thanks!
I found out about "Sailing UMA" last week and have been "eating" your videos from #1 forward.
Today, I finally caught up to you guys. YAY ME!!! :-)
The bad news is that I will probably start to need to wait for the next episodes from now on. :(
But keep it going. Loveing every episode so far.
Welcome to the club, Thomas ! We all have to wait for our young friends' vlogs every week. But when I see the awesome videos they produce, the long hours of editing implied (plus the hard work they do on their boat), I just feel lucky to be part of their journey !
OMG you really watched everything in a week?!! I didn't think it was even possible
Well, TBH I fast forwarded some parts, mostly the ones on land, since I'm more interested in sailing and refurbishing.
Watching Dan do his thing with wood, iron, fiber, electrics, etc. is just AMAZING and rewarding.
The last few in London were a tad boring to me but I guess I'll have to wait until they set sail again or tackle the next project.
The best video was coco 🤣🤣🤣🤣🤣🤣🤣 I still not found out where is that wash machine..... 🤣🤣🤣🤣
Wow, learned something new today. Thanks Dan!
Thanks Dan, that was a great demonstration and explanation.
Lazy Jacks are great but I find a (short) lazy bag works better especially in tropical areas, just drop the sail & zip up the bag to protect the sail from UV, then add a short piece that goes around the mast to cover the front end of the sail. With lazy jacks, you have to drop them to install a sail cover.
It’s on our ‘to do’ list. But need to get a heavier sewing machine first.
Excellent 'how-to' on that splice!
Absolutely amazing! Again, and as always.
Have you considered doing courses? It would be interesting to get a full break down of the tools and processes. Your descriptions seem to be more clear than anywhere else I look.
Anyway, thank you for this wonderful series. I’m almost all caught up (burning the candle at both ends, as they say)
Very very very useful for me I need to put lazy jacks and I need to do it myself and no idea how......but now I know 😋😊 thanks guys for your help today, love your videos ⛵
Really good tutorials. Those eye straps as you called them I call padeyes. Keep on sailing. I love it.
I love making stuff out of dyneema. So tactile and with instant gratification.
Dan, that's the best demo of that 2nd end locking splice that I have seen, and an interesting twist on the standard method. Thanks for that.
I have lazyjacks that are similar to yours - really similar actually, slightly different falls, but basically the same, and they retract in the same way. I don't like seeing lazy jacks in place full time, looks a bit lame to me. My lazyjacks only work so well, I have this big, heavy weight cruising main, and it has so much "body" that you have to flake it pretty carefully each time despite the lazyjacks. I guess that without the lazyjacks putting away the sail in any reasonably tidy way would be pretty well impossible.
Great explanation Dan. Easy to follow.
Very Slick Indeed AND works like a Charm, a good Show mate✅
Well done you too. I have the same setup on my 31 ft. Norwalk Islands Sharpie and find them to be indispensable, especially for a jiffy reefing system. Yuengling raised and Cheers!
You saved me! Based on your first lazy jacks I had put the construction on my to-do list and shopping list, will have to save up for the dyneema! I plan to use different colors for the different sections, to keep their identity. Did you experiment with pulling the middle of the aft line back to the gooseneck when not in use? So all the lines parallel either the boom or mast & don't interfere with anything? Just an idea, haven't drawn it out. Fan TAS tic splice lesson! More like this please!
Yes, we can pull them all and clip them to the goosneck, but honestly, we never need to, we just hoist the sail with them up since now we have a stackpack.
Thanks for showing how you do splicing!
Thank You for sharing, it was very educational. Safe travels.
Great design Dan.
Always a success even if it was not at first you guys aways made it right
Thanks for the tutorial on splicing braided lines. I've only ever spliced the 3 strand twisted type of rope and I thought the braided lines were done the same way but it turns out it's way easier.
Those splices are pretty dope
Great lesson. I will never splice a line I am sure, but now I feel like I could.
Best instructional video ever!
THIS is the kind of stuff I love to see!!! If I could buy more like I would.
There is a technique to splice braided ropes with parallel fibres inside. It involves pulling out the core on the side and puting it back into the cover from the end of the rope, further than the original exit point. But then you need to taper the cover and sew it to the core with a few stitches to prevent it from slinding before milking it inside. Probably overkill for your application as the cover alone will still provide about 30% of the original strength. Your choise of parallel fiber core is still good as it is less stretchy than a double braid. Great tutorial btw.
You two make great videos, thank-you!
Awesome tip. Thanks heaps for that. As I am new to sailing what are those splicing tools called? Thanks in advance 👍😀
Fids.
love this ch watching from Haiti this time
I also like to watch this channel. Greetings from Poland
I might be late to the party here, but the way the locking "loops" can slide backwards and then tug on each other when pulled taught looks just like a square knot. Which I thought was really cool.
Great instructional video.
Nice splice!
I've been using sewn splices for kernmantle, works well. Then serve or cover with shrink wrap.
Nice work up the mast, Kika! Brave :-) :-) :-0
I like that second loop thanks Im going to use it from now on
cool mod that would also not interfere with the sail cover I have a loose foot so I use the sail track in the boom for the cover . I would have to rig something to keep the cover in position
This was really helpful! Would you mind answering a few questions for me? I'm curious about the halyard. Do you have one halyard lifting the system? Or one halyard on each side? Would love an explanation about how the halyard is ran. Thanks!
One on each side.
Hopefully a lot of people will watch and see how easy it is to splice Dyneema !
At 16:23 I don't think I would have used that style of pulley, but it is there so why not.
"Pretty freakin slick" is the word. Good job, Good video
Excellent lesson
Thanks Dan! Good info
Which iPad app are you using for your sketches? Are you happy with it? Maybe you guys could do a tech. rundown sometime and talk about all the apps you like most.
Developing some good old time Bosun skills
Good job explaining man
I found this really fascinating! Thanks for the lesson!
Great video! I’m curious as to the drawing program you used on the iPad??
2 years, no answer... the app problem doesn't exist anymore...
You guys are great.
Well, young man, you just tought a new trick to an old geeser ! I never knew how to splice a rope. Thanks to you, now I know. Where did you get your "tube" tool ? Home Depot ??
The practice of splicing lines is called Marlinspiking and the "tube" tool he's using is called a fid. They usually come in a set of several different sizes for different size lines. Check out the S/V Zingaro, the Rigging Doctor and Sailing into Freedom channels for some great tutorials on using Dyneema to create an entire rig.
Thanks. Most aqppreciated !
Excellent info, thanks.
Very slick!
His is a pretty slick trick.
Hey there quick one: which inflatable life jacket do you guys use. They look nice and comfy. Cheers
Any book recommendations for learning more about splicing?
Nice .. I love the instruction.. well done.
Nicely done
Great vid!
Lazy Tom, Lazy Bill, Lazy Chuck, Lazy Uma, where did Lazy Jack come from? Nice knot skills, someday hope to need this as a reference. Who am I kidding, someday hope to have a rig done as nice as you do everything.
Good video keep up the good work.... cheers!
good job guys
Dan, is there a reason except expense that you didn't us Dyneema for the upper piece of line (blue)? Looks like a great set of Lazy Jacks!
It's too slippery. Hard to get a hold of an pull hard, especially that small diameter.
What size low friction rings did you use for the dyneema?
Nice splicing vid! How long until you start with dyneema rigging? Stronger, less weight aloft, easy to repair and carry a spool onboard to replace any parts needed!
We just did our rig when we bought the boat. So probably not for another 5-10yrs
Nice splicing tutorial. Do you pull your lazy jacks out of the way on longer passages to keep them from rubbing on the sails? How do you tie them back?
Nice video and helpful, since I am planning to add lazy jacks. I notice your sail crumples down quite easily, whereas mine is quite stiff when flaking. How old is your mainsail? Since I don't have lazy jacks, my main is flaked in large folds which hang down on either side of the boom, but I can see they would need to be much smaller in order to stay within the lazy jacks. Did you have to "re-train" your sail for the new folds?
Hey Dan, can you recommend a good splicing reference guide? Curious where you're learning these techniques. Also, are those the SELMA fids you're using? They seem very easy to use. Thanks!
Hey guys...rather than using the T bar to thread the tap into the boom, use your variable speed drill to hold the tap, and a cup of oil to dip the tap into before drilling it into the boom to make the threads. The drill enables you to keep the tap straighter, speeds up the process by a ton, and gives you cleaner threads. Great videos as usual.
We do that on thick aluminium, but not thin or SS, it either binds up on the SS or sometimes strips the thin aluminium. The T bar seems to give us better control over speed and can "feel" the metal so we don't strip it.
I'm with you jean, but it does take care and practice warren
@@SailingUma stay with the hand tools Dan they never have a flat battery and will always warn you of impending failure before they mince the threads in the boom or break the tap off in the stainless fitting. The belief that faster and easier is better does not always hold true
Nice how-to
looking for a splice guide to put a friction ring in 5/16 doube braid.
Good knots with the fid, :)
Very Cool
You should make boat work into it's own series. Those of us, and Im sure there are a lot of us who are just interested in your trip find boat work videos a tad boring.
Where did you buy the rings from?
I’m curious why you used dyneema, and did a beautiful job btw, and then used cheap hoisting line? I know it doesn’t hold too much weight but seems like you left a weak link in an otherwise great design. That was really informative. Thank you.
The hoisting line wast cheap, it was larger and easier the handle than the dyneema. Dyneema is very slipper, so it works great as the lazy jack, but hard to pull on.
Hey Dan, buddy. You got a wild nose hair. 13:57
😂😂😂
Where did you get those little aluminum eyes that you used?
They’re called “low friction rings” and are sold in every marine shop.
@@SailingUma Thank you!
Hi, you could have laeft the core in when doing the double brummel splice, no need to take it out. And you should simply also bury the remaining part of the blue line inside . No real problem with the core up to this point. Just when you pull it out to taper it , milk the mantel back and taper the core and the taper the rest...
That small line is too tight to keep the core in. There isn’t enough room in the cover.
Can I get an update on how those dyneema lazy jacks are working out?
The "eye straps" are called pad
eyes.
might want to have someone weld up all the extra holes in the mast and boom . Having them TIG welded would take away the extra stress points.
Excellent :)
I love watching people splice......
I think when I'm on passage I'd do a lot of this. It just seems so soothing. Its all you think about. And, the end product is magical.
Good stuff
You really should taper the working end! Looks nice plus it diminishes the danger of chafe inside the splice.... dyna1 splice are super fast and easy. But why dyna1 for lazy jacks? Seems like overkill....
Great project! I've never seen a sail drop like that - on the boats I've been on the sail has to be pulled down. (It's not hard, but it doesn't fall by itself).
Is there some secret to getting it to drop so easy like that?
McLube SailKote, generic PTFE spray etc
Looks like a square knot into the Dyneema
You'd have a wider "mouth" up the mast, for the sail to fall, if you'd attached the upper end of the Lazy Jack lines to the middle underside of the spreaders, instead of the sides of the mast. More room to fall means less hangup on the way down.
Hi Dan, what is the name of the tool you use to work with lines?
it's call a splicing fid. you can also make a very workable one by taking a hollow aluminum knitting needle and cutting the handle end off with a hacksaw or dremel....(angle the cut and it'll make using it easier) leave the usual smooth point on the end, it makes it easier to use...
It looks a little like that or is that the splice Dan? Not clear on if that's the right process after testing.