My father had all that stuff. Super expensive unfortunately. I can’t remember what it’s called but it puts “dimples” in sheet metal parts which strengthens the crap outta them. It’s pretty inexpensive as far as I remember. Some sort of stamper/press/cutter that is pretty small. I think Grind Hard has one. Anyway, they are great for adding strength and rigidity to sheet metal.

@@EdwardMurray06dimple die and a mechanical press I would assume

Aluminum oxidizes

Big sheets that are supposed to hold people and water moving in it need☝️ this rigidity without having extra mass. Hope they add it to the build, I wouldn't want it it to fail

He has one of the dimple die things, he used it with the V10 M5 motor swap build

I would have thought any welds made on this would need to be subject to some form of NDT for safety.

@@brummiescotNo Oceangoing or for commercial use, so who cares. And the Williamette is pretty narrow.

@@robertgarbe6348 Coastguard who are tasked with saving asses?

@@brummiescot You have heard of the OceanGate Titan thing right?

That's exactly how we did it at Vigor. I also noticed Oscar is not ramping into his tacks either

Nothing that a few hundred more hp can't handle 😅

Not just that flat front but the flat bottom will create suction, slowing it down.

He's gonna need a mid mounted outboard engine on the back of the hot tub like a long train with multiple engines throughout it's length. 😂 It's going to be a self-powered pontoon barge. I can't wait to see it's bow wake.

The amount of drag is going to be like trying to race a semi truck with a full load. The shape isn’t half as bad as the weight of the water on the front of the boat. The pontoons normally sit mostly out of the water. The water will want to sit at water level. I don’t think the two pontoons on either side of that giant hot tub are going to pull it out of the water. Was a miniature model used to test this? Or an engineer? Hopefully I turn out to be the guy yelling at the wright brothers that it’ll never work. I really love the idea so I hope I’m wrong.

I was going to suggest to add the cutoff pontoon noses from the other tubes added to the front of the tub - would help with some of that drag, and would also give a cool look to it.

My thoughts exactly eyeballing this. It'll float, but even at 10-15 MPH the water in that hot tub is a Problem. The boat is going to hit a wave and the hot tub will continue forward ripping those pontoons open. Even if you always empty it, the flexing is real and would still cap the pontoons seperately.

I came here to make a similar comment. I saw yours and agree! If this hot-tub tub is welded to the front of those two middle pontoon floats, they're going to have issues. With the weight of the tub water added with the forward momentum crashing against the lake/sea water those welds are going to break. I believe the two middle pontoon floats should be sealed off separately prior to welding the tub to them. And then hopefully they add some more bracing. But since we agree, let's wait and see what happens. Maybe they are planning something to add support...? If you see this, and the other guy who commented sees it, and I see it......maybe we're on to something? This project fascinates me. I certainly hope they succeed. I am looking forward to seeing the finished project.

This

Also, that might reduce any turbulence/ drag (of that's the right words for that)

Why not go one step further and just add a "boat like" (aka a triangle) piece to the front to help cut the waves?

Yes. Anything that will diminish the brunt force of waves on that Jon boat front will be better.

Blunt nose like they have is definitely going to be bashed by waves and break welds. Not to mention I really think maneuvering is going to be diminished a ton.

i was just going to say that he should weld that separately of hot tub wall, it would be less troublesome to weld it water tight that way and stronger.

Great idea!

I was thinking the same thing.

Having separate watertight compartments worked for the Titanic.

They already have baffles, check previous episodes.

They will definitely crack

After they cut the noses from the center hulls, it LOOKED like there was a bulkhead a couple of feet in. So if/when the hot tub box cracks loos it shouldn't flood the entire tube.

I came here to say the same. Those center pontoons need a front bulkhead separate from the hot tub box. If you depend on the box skin to seal the pontoon, those welds will fail to remain water-tight as the connected unit flexes. Worst case they result in leaks into both the pontoons and the hot tub box.

​@LauS0 no they won't

They won’t

Agreed and that’s basically what they do on large yachts that have hot tubs. Fill at anchor or at dock, flush when moving because as you know, the water is going to be so heavy it’s going to possibly make this boat notable to be piloted and at the very least the water will splash everywhere.

@@WeTheDylan usually flush and fill at anchor, dock water is narstyyyy stuff

agreed. or just make it a moon pool! save a ton of unnecessary weight and could still add heating elements if you wanted and a net to keep out fish or debris

so much this.

as a former naval engineer you should be roasting the shit out of the hydrodynamics of that hot tub & how its going to push more water than the daily tide 🤣

That was my thought. I was surprised to hear him plan to direct weld them.

This whole thing is going to flex like crazy in anything other than absolute millpond calm water (especially with 40 people and a full hot tub on it) the aluminium is going to work harden and crack all over the place. It won't have anywhere near the structural rigidity that a normal V hull boat design has as there is very little superstructure. There's a really good reason why there's no commercially available pontoon boats this size.......

timelapse cameras dont have frame rate, but ive worked on it and i think ive got it fixed!

@@BisforBuild thanks for the info, I'll do some research and learn some more. Fingers crossed it's sorted

It’s not the framerate, it’s the shutter speed. They are different. You don’t want the shutter speed to match the LED refresh rate, because the shutter will “open” either only while the PWM controlled LED is on or while it is only off. What you want to do is set shutter speed to something >2x slower than the PWM frequency of the led. This ensures light hits the open shutter no matter what phase the PWM sync is at. The banding is due to the camera having a rolling shutter. Even digital cameras have a rolling shutter, global shutter CIS sensors is usually high end.

@@acreery1 yeah I realised I said frame rate a lot and absolutely did not mean that, I definitely meant shutter speed but I'm tired and my brain isn't working right. Thanks for the information though, I'll make a note for future

@@TotallyNotRoadkiill haha, no worries!

He's a good dude.

Better have deep pockets…Chris is paying him or sharing revenue quite well no doubt.

Oscar isn't just an employee, he's obviously also a good friend.

None of the water below surface level will weigh anything.

@@Grunk-ik9osif it’s going to plane out the water in the tub will all be above the water so it will be thousands of lbs of bow weight making it bow steer and plow

@@jaydenbankes8126 I can't imagine this thing going to be fast enough to "plane out of the water". Is more a mobile pontoon than a boat.

@@framegrace1 His plan is apparently for this thing to plane according to his other comments... This thing will likely be a failure, but im still gonna keep watching lol.

Can't wait to see the aluminum lift 2 tons out of the water under stress. Better have the coast guard on standby if you are going to try it.

Now that’s what I call a big live well.

It's already a thing that exists, it's called a party barge

ikr he couldnt even keep a pre built yacht above water so this will be interesting

he doesnt even have a way to haul it yet lol

It may be the first pontoon submarine.

Im pretty sire he did his calculations wrong by saying the hot tub will add Buoyancy. It will not. It will be a neutral object for the volume of water for inside the hot tub

@@justinhowell8484 the only neutral bit of water in the hot tub would be the amount below the plane of the water surface he's floating in. and if he did try to make plane with this brick, the amount of neutral weight shrinks as the tub rises out of the water. this would effectively make the hot tub heavier on the nose as it went.

It will certainly be neutral when it sinks

Definitely sink 😂

They'll float-test this before adding furniture and stuff, right?🤷🏽‍♂️

I was thinking the same thing -- Search pontoon boat hottub, they're always in the middle of the boat.

I agree,definitely going to be nose heavy by the time you put 4 fat chick's in it lol.

where in the world did you get your 400 gallon spec? I have my hot tub already and its 222 gallons

222 Gallons is 1,830 pounds. The thumb nail looked like a four person tube to me. But still that's a lot of bow weight with water in it.

he cant even keep a pre built yacht above water, are you surprised

i disagree, i think itll have enough buoyancy itll plane across the water

There will be no plane with this huge contact surface (hottub box) touching the water! Unless you plan to mount a rocket to it 😅😅😅

It might plane like a flat-bottom airboat. I'm trying to envision the effect. Either way, it's an entertaining build.

@@kdwalker1656 A flat-bottomed airboat has a much flatter slope and smooth transition than this triangular box with a very steep slope.

@kdwalker1656 that's my thought, the problem is that will raise the pontoons out of the water in the front. It will definitely ride nose high

It might not snap, but it'll crack like an old Lady's makeup when she smiles at you!!!!!

They’re putting a hot tub inside of the area they just created no pressure unless your talking about the out side water force .

Physics not your strong point I take it?

I'm an engineer and work with lots of aluminium, the sheet metal for the hotub is too thin which is why it's distorting so much, I would definitely go thicker. The box section also looks way too small, there is a high chance the welds at the bottom of the tub will fail with all the weight. I would suggest welding some gussets in for more strength.

​@@MrThisIsMeTooRight back at ya!

shoot.. hope its not to camera thin

I agree! The style is like an airboat, but the slope is way off! They are way more "pointy" and have a long smooth transition from slope to flat, whereas this just angles to flat.

im scared of flying

Okay then b is for Train? ​@@BisforBuild

​@BisforBuild Think I've had more pucker moments on water than in the air 😂. Not a pilot, but about a million passenger miles.

you have to Face your fears or forget about it i dont whant you to die It is difficult to find good KZfaq channels these days​@@BisforBuild

@@BisforBuild good thing you did not win that helicopter then. 😀

introducing impurities into aluminum welds seems like a great way to Have A Bad Time™.

No water left in it....

Deck washer 5000!

*tube

It will never plane, wrong hull for that.

I don’t think that’ll be a thing happening.. I don’t even think it could go in the ocean 🌊 it’s going to be a slow and steady process kind of beast. It’s only going to be in fresh still water. It’s in pontoons.

ND filters help this

Why don't they sell pontoons longer? That was my thought too, as the reason. I thought if you could somehow have them offset and then have them hinge in the structure including the floor it could flex in the middle at least. If it's only small waves in like a river maybe not a big deal.