Why we built CARBON CHAINPLATES [E86]

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[@johnalden4605]

Mamma is a work horse for the boat! She is a real asset to your project.

[@MH55YT]

You gotta love mamma.

[@davidhakes3884]

Absolutely !! Your Mom kicks fiber booty.

[@RogerFleischer-p3f]

This could have been phrased better IMHO.

[@newzealandfortrump]

Inspectors input was great ... you must feel so relieved getting such safety approval in this way.❤

[@TheDuracellProject]

yes, with the 5 pawz stamp of approval, we can sleep at night

[@EUC-lid]

@@TheDuracellProject The Inspector's theme song is excellent.

[@bradfordsimms715]

How about structure for the bowsprit for the old chain plate ? Nice work BTW

[@ghislaindevouton1553]

I was about to suggest it.

[@steveraleigh100]

@@ghislaindevouton1553 same here. but it would need to be longer I'd guess.

[@bert2526]

Tapping the new chain plates is like checking a friend's new car, you kick the tires a bit and nod in approval. I love your videos Matt and Janni. They're inspiring, educational and fun to watch. Can't wait to see Duracell float again!

[@larkangel6593]

Smart decision by your fab & paint sponsors Great exposure from both the build and (future) sailing episodes

[@dcallan812]

I guess now the chai plates are glassed in, you could lift Duracell by them. 💪 great video 2x👍

[@videotrexx]

The "inspection" segments are always hilarious!

[@scottpiggott7600]

The chain plate could be used as a collapsible bow sprit where the anchor chain runs out over the end. Then fold the chain plate back up toward the boat to make the boat a little shorter thus easier to maneuver in tight places. Just a thought!

[@edw.b856]

18:00 Obviously, please yourselves first. If you end up doing destructive testing, please document the hell out of it because 1) science 2) SCIENCE!!! And you'll have at least two parts to auction off 😎

[@darrylmcleman6456]

Once again it appears you have passed the Cat Scan!!!CHEERS from Here!!!

[@malcolmwillis6450]

I can understand why folks questioning the carbon chain plates, because it is something they not use to seeing. As a retired naval architect / professional engineer I know they are plenty strong; the only chance of failure would be in the glue line or secondary bonding. Given the vacuum bagging and prep work that Matt does this is highly unlikely to fail.

[@gregoryh4601]

Matt so awesome to see you saving Weight for All Wifely things lol . Matt will you make more Carbon fiber Hold Downs for the Rest of the Rigging? Will you be Running Dyneema Rigging ? Would you Change the Mast if you Find a Carbon Fiber Mast? Love how Mom is your Right Hand Worker. She did a Great Job Raising you Matt. Peace Be With You and Family

[@wolo4]

Maybe look into getting a portable air conditioner for inside the boat during the build. You can contain the cold air with plastic sheet or blankets

[@TheDuracellProject]

it doesn't get that warm here that often, even during the summer.

[@metagoat]

Ah, the PNW is such paradise. It is so hot and humid down here in Georgia right now that I cannot get any work done outside without soaking t-shirts in ice water and changing every half hour or so.

[@lvdriver4]

Forward stay?

[@bmunday]

@@lvdriver4 backstay?

[@Nena84734]

The cat inspector was the best, loved the tapping with her little hammer! Man, that first wide layer of fiberglass was a monster, a stress monster, so much more manageable with them cut in half. What a great job though, I’ve never seen anything like that, pretty impressive!

[@MaShcode]

The chainplate could serve as a support arm for a salon table that can be stowed vertically against a bulkhead

[@glennbrown222]

I have no idea why I watch this channel, but I do. I always click like because i enjoy following your adventures, I can't wait for the splash. Carry on carrying on. :}

[@TheDuracellProject]

we have no idea either, but we're glad you do!

[@josephstevens3357]

Surprised to see Evan's Zululand Yacht Club shirt. Very interesting. Didn't think anyone in BC would know of the Zululand Yacht Club

[@evangatehouse5650]

Richard's Bay was the first South African stop in our family's 8-year circumnavigation. Had to get the t-shirt.

[@FunsongsMusicByPeterRahill]

1K+ subscriber LIKE, 6,200th desktop looky-loo view.

[@RagtimeBillyPeaches]

Using the left over chain-plate as a folding dive platform for eels.

[@tamecheetah]

Chain plate converted into a unique block as part of the rigging?

[@billb2176]

Reassuring that the chainplates not only passed the naval architect but also the CAT scan - now if you had a retriever or course, then a LAB report would never be a problem - possibly challenging if the LAB technician and the CAT scanner were on site at the same time !!!!

[@bartwesp4303]

it may not be captivating, but it is good advertising for your partner Totalboat! Having your Totalboat link in every description would make it easier to use, or on a Facebook page?

[@jasonholmes6137]

I need stock in total boat for real this boat a.k.a the Abrams tank your building will be insane when complete just epic really cant wait to see her sail and i wouldn't upset if you wrapped it in carbon black and did orangy teak decking to make it look like a battery i think she would be amazing

[@jimedson3853]

Glad you were able to get the chainplate project done. Nice to see the architect visit. Thanks for the video 😁😁😁👍

[@TheJarrodh]

I would definitely trust the laminated chain-plates the way you've done it rather than a couple dozen bolts / holes through my hull.

[@1armedguy4]

Use the chain plate in the windvane configuration. Cheers !

[@carlstineman274]

In the final analysis, it still all comes down to the strength of the glue bond between the fiberglass layers, the new fiberglass and the original hull skins and the ring frames, and between the CF chain plates and the new fiberglass. As far as I can see there is no continuous fiber reinforcement between the shrouds and the hull or ring frames so it all comes down the the strength of the glue bond, primarily the bond around the chain plates. At this point what's done is done so only time will tell if Evan is right. I am reassured by the history of use of similar CF chain plates in race boats, presumably without notable failures, and the fact that Duracell's seem to be substantially over built. Here's hoping we are all right. Time to move on.

[@michaelkohn3277]

How about a huge toilet flush handle?

[@Sevetamryn]

This "as a kid story sound like me, great in tearing things apart, out of curiosity. However, i thin i learned this way, how things work, before i was able to to rebuild then. This just comes later.

[@mr.e7022]

Why didn't you use vacuum infusion to bond the chain plates?

[@TheDuracellProject]

I don’t infuse. I don’t have infusion epoxy

[@mngbennett]

My guess is the extra chain plate could be part of a hinge for a droppable transom that converts into a swim platform. It just feels like one side of a hinge and a swim platform would need some pretty strong hinges.

[@propylaeen]

Turn it into an emergency tiller arm?

[@sailingsibongile]

Ahh... Zululand Yacht Club. I've been there plenty of times. I went to school in Richards Bay, South Africa.

[@mikemaliszewski3305]

Emergency tiller arm/handle

[@scottkasper6378]

I’m definitely captivated by the epoxy pour every time

[@BurnoutsAndRotorblades]

In the movie Trainspotting, there is a sequence that would be shown every time the characters would use drugs. An idea for pumping and mixing is to make a drag-and-drop sequence you can use to convey this and use it as a transition into whatever comes next. You kinda already do that, but not as aggressively as the movie sequence from trainspotting. Nice editing though. The proof is in that you can take a boring process and make it interesting to someone like me, who doesn't even like boats.

[@bishopkinlyside8477]

Hi guys, wow what a good job you all are doing Matt you have a one beautiful mother it is wonderful to see her coming to help you guys and sometimes your dad turns up. He must be busy doing something else but you’re so blessed to have a wonderful family , Cliff from Logan City Queensland Australia 🇦🇺 from the big island 🏝️

[@RogerFleischer-p3f]

Well said.

[@seanwalsh999]

You have probably already layed up the other side, but I was thinking it was the over head portion of the layup that was the problem as it was too heavy with resin to stick, but the side portion could be pre-wetted to save some time, and the over head portion of the same sheet could be wetted in place as you already do. Love the " cat scan ".

[@Finn-McCool]

2:39 Guys, next time you need to show video of an off-road motorcycle during the electric shears segue!!! To randomly see a motorcycle gassing it through the dirt long enough for our brain to ask: "what's happening here?" Then switch to the shot of the electric shears. The audio stays the same but the visual changes. And yet matches perfectly for BOTH scenarios . 😊

[@mikemcdougall8969]

It is ridiculous how much I love this channel. Think of me as a Duracell groupie!!!! You two are naturals in front of and behind the camera. A real pleasure to watch your project come together.

[@randyhonsberger47]

Great video you and your mom work well together and we appreciate the inspector

[@dongalloway6888]

I’ll never refer to myself as an “Expert” in any form… An “Ex” is a has been!!! A “Spert” is a drip under pressure…. I’m 66 and would like to think that I have an above average knowledge of “Common Sense “… although there are those situations where that could be argued!!! I’m restoring…. Rebuilding a 1988 Wellcraft Center Console Bay boat… new floors, new transom… adding a new additional fuel tank… installing a new console and T top… and an Armstrong Engine bracket… I guess if I am completely honest… I should say I was doing that… the project has been on hold now for a few years due to multiple cancer diagnosis’s… and being severely mauled by a dog!!!! Enough rambling about me… I absolutely love the carbon fiber chain plates… and agree completely that the 15 layers of fiberglass is hands down making them bulletproof… or at least making their attachment points bulletproof… With this said… am I correct in saying… that where the shrouds attach…to the chain plates is now the weakest link????? My understanding is… “If” there’s a catastrophic failure…. It shouldn’t happen with the chain plates ripping loose… but still could happen at the shroud attachment points… Do you have any thoughts as to what the strength is at those points… Keep doing what you’re doing!!! Even if I’m not able to work on my boat… I’ll get a tremendous amount of satisfaction in watching you build yours… I’m a 100% Service Connected Disabled Vet… and go back to the VA hospital in Houston tomorrow morning for more biopsies… This is cancer # 5 in five years… number 3… in the last year alone… I’m truly blessed…as 100% of my medical is paid for… I’m tired of fighting… but still doing my best to keep my head up and move forward!!!

[@SOLDOZER]

8:30 They're squeezing too much resin out of that glass. Look how much pressure she's putting on it. You might have 15 layers, but it dont matter when you have squeezed all the resin out.

[@leaveonlywake]

Using numbers pulled from a quick search, figure that - on the low end - epoxy resin has a mechanical (not chemical) bond which in shear has strength of 3000 lbs psi (& much more with fiber reinforcement), chainplates of 4" width x 36" length bonded on one side result in an amazing 432,000 lbs of shear load need applied before one could rip those off the hull (4 x 36 = 144, and then 144 x 3000). Encapsulated in like shown in this video, that easily doubles - and these are low numbers for just resin with no fiber reinforcement, which I read can triple the strength or more. I'm not an engineer, obviously, but if these numbers and my understanding of how they work are correct or even close to that, then M&J indeed have an overbuilt boat and nothing to worry about. :D If these are wrong and you ARE an engineer - enlighten us please. :)

[@MatthewWebb62024]

Use it as a bosun's chair.

[@andrewhebbert4442]

Love Evan's Zululand Yacht Club t-shirt. What is the story behind that?? Howsit from Cape Town, South Africa 🇿🇦

[@hamiltonal4338]

Love the Inspector 🐈

[@normanboyes4983]

I think the redundant chainplate would actually make a cool (slightly springy) seat support for the workshop /worktable/desktop.

[@larrimos]

When you were painting the chain plate the metal of the paintbrush tapping against carbon fiber created a noise I didn’t expect. It sounded like…ceramic? Brick? The sound of charcoal briquettes being poured from a sack!….I guess that would make sense…carbon.

[@markmacleod6971]

use it as a plasma tv mount

[@piercet]

Someone needs to make a carbon fiber chain and put it on a dinner plate just to annoy someone now.

[@gerrymilidantri6457]

Matt , there will be 3 things left on this earth after a nuclear explosion . The cockroach, Keith Richards , and your Chain plates ! Awesome job youngman

[@imusuallycorrect]

You have bag and pumps... don't total boat do an infusion resin? 15 layers of what weight glass? That is a shed load even at 300g mat. Can't you get Spabond over there? It's far superior to silica and resin. Use the other chain plates as backstay and forestay.

[@colsmith7257]

CATS ARE USEFUL, when being harrassed by juvenile orca.

[@alexmeyjes5533]

Dont you have a bow to fix still ? Incorporate the 'plate ' in the bow repair , or better yet incorporate it with anchor windlass placement

[@user-no5md4dr2p]

Hi! Loving the project! I understand the benefits of laminating the chainplates, but the previous chainplates were bolted directly to the knees, weren’t they? This takes the load to the string points designed for the purpose. I presume the fibreglass laminate does the same.

[@evilla7579]

Rubbish chainplate makes a perfect emergency tiller for mounting directly onto rudder shaft.

[@glennrainey1227]

I am a little puzzled you did not use a structural bonding epoxy for the plate to hull bond, rather than what I take to be a laminating epoxy; e.g. Araldite 420 or similar. Also, the tapered plate geometry suggests that any plate to laminate bond failure could pull out or break free and reduce tension load capability. Perhaps past builds with this same design suggests an adequate structure however. My perspective is from aircraft structural composites.

[@rorybainbridge7516]

I'm sure that with the amount of glass and epoxy you've put over the top it's stuck to the Hull very well, all with out any load points. The thing that i would be worried about most, with carbon chain plates, is the constant pulling from stainless rigging. Every time you tack, jibe, sheet in or out there will be wear. But tbf I'm not a naval architect...

[@owenkuntz9108]

I believe the correct answer to how many times you’ve recorded epoxy being pumped is… And embarrassing amount. Lol

[@trentohs]

I'm guessing emergency tiller....(use for the old carbon chain plate)

[@Gottenhimfella]

Passerelle hinge? Strongback for a large hatch? Lever for a dinghy-style vang?

[@timwebb8153]

Make a hydrofoil out of the rubbish chainplate! Might give you one more knot of boatspeed ... ? ;~P

[@Finn-McCool]

Use the scratch chain plate for a flip up tiller handle. ... because every sail boat needs a flip up tiller handle. ... for the door-pull on an interior bulkhead door. - 😏

[@endospores]

Matt, get in touch with the Hydraulic Press Channel, make some testing on the carbon fibre chainplate happen. For science.

[@bdphourde]

Matt, I know that Duracell HAS to have fore and aft, upper and lower shrouds on both sides. Where are all the other chainplates? Are you going to have running back stays? Are you going to have an inner forestay? Are you going to have more than one backstay? Are you planning a solent rig on the bow?And the forestay needs a chainplate also, two if you are going with a solent rig. As I see it, there may not be enough time this year to do just the rest of the chainplates! As far as the "not to be used" chainplate, I had suggested asking Lloyds of London if they are interested in testing it. Big insurance companies might want to know. But personally I would hold on to it as it is very likely quite adequate for any other chainplate duties.

[@trep53]

From where I sit there doesn’t seem to be any question about your design, construction, methods or solutions. You are the toughest critic and would not be willing to risk anyone’s life on that boat. Besides, Mr. Plant set the standard of Duracells construction quality for you to follow. Keep up the great work before you know it you will be sailing her.

[@RogerFleischer-p3f]

It's great to have your architect-engineer Evan working on site, side-by-side.

[@Seafariireland]

Maybe use the unused carbon chain plates for bow or stern stays or for giant hinges for a stern platform or hinges for stern Davitts??? Wow, that was a lot of layers on top of the carbon but I thought it would be more desirable to have a larger surface area to spread the loading over a wider area! Or what about continuing the overlays all around the lower hull and joining up with the future keel attachment area and back up the other side to the opposite chainplates and maybe then across the deck strengthening the mast base area and back to the first side??? That would then make a sort of space frame, or would it? So many things that can be done with this technology! Best of all, Kitty can then check it all out!!! Maybe there is a song there, or a poem??? SkipRay, Kerry, Ireland.

[@user-bf7vy3ub9c]

Those chain plates look so good in there. Fiberglass is such a pain to work but when done right(after a thousand times) it’s very rewarding due to the usability, performance, looks and etc…

[@000gjb]

You never laminate fibreglass cloth on cloth. An interference layer of chopped strand is required between layers. I repaired a bow of an Epoxy laminated cloth constructed boat which was crushed by an impact. Consecutive layers of cloth on cloth weave peeled off like sun burned pealing skin trying to get to a solid substrate to start re-laminating. I never thought I would be able to get a solid base. Lesson learned. A boat builder warned me about the problem before I started. Everything he said played out as he said. In one of the Sydney to Hobart yacht races in Australia, a yacht retired. In the news footage you were able to see a fibreglass ribbon flaying in the wind along a third of length of the boat, could have bee caused by the same issue.

[@inveterateforeigner2780]

...🤨 Why're they called 'chainplates'? I haven't seen or heard a chain in every episode dealing with this aspect of the build.

[@_instabil]

I am new to this channel. It is very nice to see its a family project. Enjoy your time, I’ll follow from here :) My thought for that part: A chainplate for the backstay? Babystay?

[@TheDuracellProject]

welcome aboard!

[@andrewseaman7012]

Why would one chuck out the sturdiest and safest of all possible chainplate construction structure in massive 40mm stainless steel to substitute with a little known material that is only glued to the inner skin (!) of the hull? "Because the shower goes there"? I have never seen in my life a more robust and well built reinforcement structure for chainplates than the ones that came with Duracell. If the hull has a layer of foam in the middle and you glue the carbon fiber chain plates to the inside (but also if the hull does not contain a foam layer) you will create concentration areas for the ingress of tensile forces coming from the rig. A strong tension on a shroud could lead to delamination of the hull underneath the chain plate. The tensile forces from the rig need to be distributed over the entire hull and converted to compression forces by structures exactly like the ones originally present on Duracell. Your choices are hard to understand. Why don't you insulate your boat properly from the inside? You would not need to prepare for condensation in the mattrass in the first place. You could laminate vertical strips of wood to the inner side of the hull for support and insulate with foam between them. Then screw on wooden slats on the supports. Or apply wooden panels that have a veneer on the show side. That way processing the inner hull surface becomes unnecessary and you gain a warm, traditional craftsmanship like impression in the otherwise coarse and bare interior. You'd combine function with ease of production and good looks. Wood is the most beautiful of materials if well surface-treated.

[@Philippe275]

So overkill if you knew that the chainplates was properly bonded to sanded surfaces beforehand. I'm also not so sure those 15 layers of fiberglass offer the level of strength you think they do, since the chainplate isn't wider at the bottom part, the weakest link in the system is really the surface bonding between the first layer of fiberglass and the chainplate. The whole fiberglass doesn't need to come apart for the chainplate to break free, only the layer that bonds to the chainplate and the chainplate to hull bond that you did last episode. What I would have done as a test of your previous work, is to tie together the chainplates from both sides together with ratchet straps and see if they are properly bonded. But anyway, you can always test the strength of the finish system since you know the sail area and how high the attachments are gonna be, and don't worry about weakening the bond since if it was done right, you would need north of 1 million pounds to break the bond in pure shear. One other funny thing is that mechanical fasteners don't only just work as this naval architect said they do, since they also clamp the two surfaces together and generate frictional force between the 2 clamped objects and that is only what should make a chainplate carry shear load.

[@lincolngrove2808]

I too dismantled a lot of things as a child, it was some time before I learnt how to make them work again. It's a great apprenticeship, there's not much I won't have a go at fixing or building now.

[@TotalBoat]

Awesome progress this week! Great work

[@philiphardman9576]

well done w the chainplates guys.. outstanding, thats a clap from me..

[@nicorodo7161]

Hello, Do you guys intend to lift the boat by these chainplates? I think you could if you wished! what a huge job! All the best

[@antoniodesousabranco9354]

I can't imagine a better name on the stern of that wonderful sailboat, crossing oceans, than... MOM.

[@rohrertech8882]

Why carbon instead of fiberglass for the chainplates? Given that glass has a higher tensile strength? I understand that carbon is lighter weight, but I am operating on the understanding that glass still wins on tensile psi, which seems to be the winner in this use case.

[@sebell69]

LOVED the Hammer from the inspector 🤣😂🤣😂

[@raymondhafsten5731]

Ok on sheer...never thought sheer was any issue now with layers cover any tension, if there is any, naval architect only referenced sheer...liked your idea stress test particularly the obvious elephant in the room the upper cutouts with sail attachment under all stress vectors as if under sail all conditions over time...shall not never suggest any mechanical heresy...ever again

[@jmilesfox]

Isn't there some irony using carbon fiber on a Mike Plant boat? Either way nice project. I hate to see that boat change, but I know that in the end, it is for the best.

[@FullyAMPT]

The old chain plate could be a very heavy duty hinge for the swim platform

[@jeffreygilchrist1330]

a swivel seat base for your work bench just have to mount a pole for it to swing on cheers

[@hedleyjackson5131]

Looks like adult Matt has nailed reassembly! Fails chain plate becomes a paddle.

[@reefslayer21]

I have zero interest in sail boats but I love the fab work and would like to do more epoxy and less polyester/vinyl ester in my boat builds, these videos are awesome

[@MrScottr1958]

Why do I see it as 1 surface glued to another and no matter how many layers you have over it if that 1 joint fails it will just slip out leaving the shape in the glass behind?

[@johnunruh7119]

Use the rubbish chainplate as a really indestructible handle for the head...

[@bikerXtrash]

Idea for the trash chain plate: Use it for the flush handle for the toilet.

[@TheDuracellProject]

haha!!

[@susanmccarthy3394]

Thanks to Evan from all of the Patreons and subscribers!

[@h2ohous]

I do not remember what the backstage situation is, but you could use the rubbish chain plate as a backstay attachment.

[@bobcornwell403]

My only objection to carbon fiber chainplates is that there is no way to replace if they should happen to wear out.

[@andrewmoylan6295]

In to the space age, Matt, looking great.Thats one picky inspector, even went for the lick PH test 😂 Solid work mate

[@TheDuracellProject]

she has her methods!

[@Brian-os9qj]

Testing it sounds ideal for the build curious folks. I agree to that.

[@djfaber]

Are you going to use the carbon fibre chainplate as part of the bow?

[@elijahmerrill9045]

Guess for bad chainplate: use in davits system?

[@tbd-1]

10:56 Dare I say...an embarrassing amount of epoxy 😊

[@edryan2926]

Terrific progress! That was great to see the engineer stop by and approve of your work! Thanks for all of the explanations, and putting some fears to rest. Great video as always, and keep it up.