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It's so cool to see one of these engines ACTUALLY being used. Every video on youtube of these small engines is just reving it on a desk.

You should make a Thailand Longtail boat! That motor is perfect for a longtail. You would have full power no complex gears and be able to easily control and steer the boat with a standard motorcycle throttle.

"I have not seen a single lady but there's five dudes lined up on that dock" Lolz

I love how the mini V8 still has that V8 sound. It would be cool if as your next solar boat, you did a combination solar and sailboat.

Today you learned what many a car guy has learned. We all hope the cool V8 will get the ladies, but it ends up just being a bunch of dudes. Lol. Awesome build bro. Keep up the awesome work.

When you spend to much time alone on a solar boat....

13:45 That felt like the gym meme😂. You go there to get jacked up and get the ladies, but the only thing you get is gym bros admiring your effort.

Yeah i'm not going to lie, that is definitely an incredible intro Daniel haha. This was a really well shot video - all of it was smooth, including War Thunder. The sheer amount of effort going into this project is insane.

8:59 FYI, you can buy electromagnetic clutches that would fit the size of that motor. They're belt pulley motor clutches meant to disconnect a belt from its intended purpose. If you machine away the pulley part, you can then mount it with a bracket like you'd mount a car clutch and drive it with 12v.

Please do more videos with this engine. As many have said, nobody uses these engines to do anything cool. I'd love to see it tuned and running well. Thunderhead289 has great carb tuning videos.

It's great that you got the toroidal propeller to work, since it's so much quieter than traditional propellers. Definitely makes a difference in this build... Totally...

Very cool project you’ve created. You should try running the coolant intake line(s) into the lake and add an electric pump to circulate the water through the engine and back out into the lake. That should keep it plenty cool at a relatively consistent temperature. Excellent job on the 3D parts design and printing. 👍

I think you need to make like a 1/5 scale cigarette boat with these engines. It would be one of the funniest things on the water

A liquid-filled torque converter would be a really cool project.

Taking influence from real ships, running the coolant pickup line below the paddle board's water line would help keep it cool, although the water pumps in these motors do not have very high flow and are prone to failure. Also, running the exhaust down into the water would solve the noise issue; add a water box or flapper to keep water from running back up and into the motor though.

Great video! I think an easy solution for the noise produced by then engine is to route the exhaust underwater. That would eliminate most of the exhaust noise and you could hear more of the engines mechanical noises and maybe preserve your hearing!

that anti freeze bit at 5:05 actually kinda worried me lol

These engines often run rich from factory, once run in you might be able to lean it out a bit to make it run a little better. Ignition timing might also be insteresting to look into to make it run better A 2 stage clutch might also be interesting, using both your 1st and 2nd design.

Kudos for being the first person on the Internet to actually get real work out of one of those motors! I'm somewhat surprised it ran so long without breaking something on the motor itself.

I'm actually surprised this engine can run under load for this long without a major failure. Also I think more reduction with big prop is going to be the way to go.

The water pumps on those tiny engines are typically well undersized for the cooling needs of the engine. I think a reasonably powerful little electric pump would be the way to go to make sure the engine isn't getting too hot. Also if you swapped the starter motor for a DC motor you could use it as a little generator and maybe keep the batteries charged.

That little V8 is $2,900 that’s crazy. I bet they don’t sell very many of them. It’s a cool engine though. Nice job on the video.👍

I'm impressed how well those 3d printed parts held up

I love the bumpety bump clutch! I love it specifically because the mercruser alpha drive has essentially the exact same thing in the lower unit. The dog gears in a merc alpha drive are a sawtooth shape so they slam together but disengage smoothly.

Best intro ever.

Put an exhaust pipe that goes in the water, not only will your engine be quieter (IDK if you have ever heard the sound difference of a boat engine running in/out of the water) but you might even be able to get free power from your exhaust gases.

Try just going straight from the engine to the prop, one link like they do in those Asian V8 river boats they put the engine on a pivot point and just steer the engine instead of having any gears that get in the way So you can utilize all the power.

This is such a cool project. I'd love to see more done with miniature engines!

It’s so cool that it’s possible to make such things in a home shop. In the old days it probably took a million dollar lab to do it.

Clutch springs have to be massively powerful. Even with modern clutch materials the coefficient of friction isn't nearly as high as you would imagine.

“I haven’t seen a single lady. There’s five dudes lined up on the dock” 😂 **Cuts to guys cheering you on**. Guys being guys 😎

A total tonne of fun! Great work! Mostly these mini V8s never really sound like real V8s but this one really does! Awesome!

Wow, that's some top-notch green-screening and explosion-overlaying. Also, the "bumpity-bump" clutch worked really well for the first try. Didn't even shatter/explode!

The universal joint is not ideal because it is not a constant velocity joint. It "pulses" as it turns if it is not straight. A way around this would be to use two joints out of phase, but they need to be arranged so that both bend at the same angle. For a clutch, I wonder, can the electric clutch from a car's AC pump be operated progressively? Otherwise a simple system would be to use a belt drive as an adapter and just control the belt tension to work as a clutch.

I've been watching a channel who buys literally every model of these miniature engines and then adds some things to make them run well. (For the metal in the oil, he tends to let them run in for up to a couple days before ever seriously revving them) He uses some of them in RC cards. What I'd love to see is one of the real car engineering channels, who manufacture parts, port valves and tune the cylinders to perfection, really go ham in modding engines, to pick up some of these mini engines (they come in everything from straight sixes to V-12) and modify and tune it to perfection. If I'm not mistaken, the mini V8 is capable of about 3HP out of the box with standard parts and that's with somewhat questionable finish on the parts. I'd love to see someone go ham on engineering a good engine out of it, put all the different engine tuning stages on it and see how much power it can make then.

Words cannot describe the emotional distress I am feeling hearing you engage that clutch

It is incredible you can generate so many videos and make products at such a rate, I have been following for some years and have never been disappointed in the value of your productions and I watch a LOT of content.

Try a variable-pitch prop. Then you can engage the clutch and rev to peak THEN start coarsening the pitch. You might be able to produce more power since you are already at RPM before giving it a load. I had a moped once that could get up to 28mph on level ground. However if you went down a hill it would speed up, then hold 34 once it leveled out.

This is awesome! Full size boats use a micro switch that cuts the ignition for a fraction of a second to go into gear more easily. And the idle has to be pretty low, maybe you could ad a spring to push it into gear once you move the lever?

Really cool concept with the V8! As for the clutch, I'd love to see it implemented the way Thai racing boat enthusiasts do it!

Turning it into a generator to use as a range extender would be interesting

Bogging at WOT makes me think your mixture is leaning out as you give the motor more air. I bet you can tune that out with new jets.

1:05 thats the best thing ive heard all day "pugs are more related to a football" im dead 💀

Ive been into Drag racing for years and one of my drag cars has a manual dogbox gearbox simlar to the one shown here in your video. A common saying you hear with a dogbox is to "shift it like you hate it" and I cant tell you how true that is. If you try to shift smoothly or how you normally would shift all you do is grind gears no matter how much force you put behind it. The key is quick stern shifts like your mad at it , and then magically its smooth as butter.

Every time you change the oil it's a different color lmfao

you should totally get one of those kayaks we saw in the start of the video, strap this or another engine on there, with clutch and gas pedals, steering wheel and and an accurate speedometer.

Dude yes. So glad to see these actually being used. Electrics are kewl but this is just way more impressive 🤘

Freaking so cool. I love seeing 3d printing projects like yours. Keep it up man. Enjoying your videos.

The CNCd plank was pretty cool

That engine probably needs to be tuned a little bit. It might be running rich with the smoke coming out of the exhaust.

Great job to see one of these used mine I have for 3 weeks will not start everything looks correct spark sensor fuel it will not start at all. Keep up the good work.

Surprisingly good! Sounded the part and looked cool doing it

It's about time somebody actually put one of those Motors in something to make it work😜🤪😉

Would be cool to put the exhaust pipes slightly under water. This would maybe make good bubbling sound.🥰

What an interesting video, I loved it and I am an artistic person, a musician in fact and I love how you explained how everything works! Your commentary was excellent and so was the filming!

halfway through i was thinking "YOU NEED A STRONGER CLUTCH" then you said it and it was relieving, thank you.

Instead of a clutch, you could try just lifting the whole prop out of the water on startup. That's what they do in East Asia. Or just buy a gokart clutch.

"Electric boat man finally snaps: makes gas guzzling surfboard"

Love EVERY part of this vid!! Wish i was there to help in design!! I always wanted to put 1 of these engines to "USE"....

It's great to see someone actually use one of those tiny V8 engines to power something, thanks!

I wonder if you could increase efficiency if you changed the U-Joints in single arrangements to duos. The engine wobble may possibly be due to the single u-joint arrangements causing nonconstant velocity output as well. If you added a second UJoint it wpuld counter the other and gives you a nice constant velocity output. and erase the slight horizontal movement that comes with a single joint system.

A few Ideas I thought worth sharing. On the outboard unit, have the stearing pivot axis oveverlap with the axis of the vertical drive shaft this way no mater which way you turn, the vertical drive shaft will remain in the same position relative to the paddle board, base, etc. This will eliminate the need for a U-joint of any kind. Instead of running coolant, have the engine take in cool water from the lake and dump it back out; no recirculation. This is the standerd in the boat industry. You may also want to use a small sea strainer if you go this approach. For the noise, you can always extend the exhaust to go into the water. I really hope you figure out the carburetor issue. Anyway, that things super cool! I hope to see it refined and back out in the water

this is the best video I've seen about a miniature engine, also very interesting with what you did with the clutch, I have a 1926 Bentley and the gears use the triangular couplings so every time you put the clutch in on your engine it reminded me of my car with the same sound haha. brilliant video earned a loyal subscriber !!!

dude.. this was cool.. i have seen this mini engine with a 3d printed gearbox and all.. all controled with a RC controller.. it be cool to see your paddleboat fly across the water on a tiny V8

It's like 2 things I really enjoy very much have meshed together... Rctestflight and IC horsepower. The fact one of these mini motors is actually being used for something is the absolute cherry on top!

I have had the luck to work on about 8 conley v8's. And as you said, most of these engine are just ran on a stand. I'm very impressed to see under heavy load it held up.

it was so great to se somebody use this in a practical application

This thing sounds AMAZING. Great to see these toy V8s actually get used for something.

This is an incredibly well done video. Thanks for keeping everything actually valuable and not just fluff. Great video.

I wonder how difficult it would be to make these engines electronically fuel-injected? That would be sweet! there are plenty of inexpensive programable ECUs out there like Alpha X and Speeduino.

I love your videos so much and I'm looking forward to propeller test! Keep up the good work 💪

This video was just fun to watch. I loved it. Thanks for sharing this vid, I’ve now subscribed.

You need to move your weight a bit further back to plane. I don't think you have enough power though. Less wetted area and displacement, less drag. As you are nowhere near full motor output, go lower pitch and diameter on the prop. Lower pitch will give you more push but less diameter will unload the engine more and possibly permit sufficient combination of torque+RPM to get your SUP board to plane. That's your next goal. From there, you can optimise pitch and blades, diameter to get best planing speed. Beware water ingress into cylinders. Trying to compress water doesn't end well. For that reason, don't put hydrofoils on at this stage. Lots of refinements needed yet.

I think I'd like to see a v8 Unicycle (peak impracticality)😅 Although a "most practical" mini v8 powered something, like a paper shredder would be cool 🤔

Love how you guys combine engineering with having fun. Best way to learn.

This tiny engine hooked to a dynamo could be a nice range extender for your electric boat - when the solar panels dont produce enough, or if you need them away

This might help in a future build, but if you want a clutch and don't care about slip ("on" and "off") I would suggest looking at how differential lockers are designed. Any true locker (not a limited slip, obviously) should work, but auto lockers in particular do exactly what you were going for, and are of a very similar design. Nice job btw 👍

Would love to see more with these small engines. Water, land, air whatever but this is a very cool concept that you dont see often. Thanks for making this! Very well put together video.

try using a thinner or less dense foam for the intake filter, it might be starving it for air. also get an afr wide band to tune it. amazing to see one of these ACTUALLY put to use. keep up the amazing work!.

That is AWSOME content ! So entertaining. Sounded so great !!!!

Would be cool if you designed a cvt for it. Seems like it’d help with getting into the higher rpms

Next time you are looking at making a clutch like this look into automatic transmission clutch plates. they are designed to hold on steal plates. You just need the correct pressure which is easily produced with a hydraulic pump. Or use a clutch drum and planetary from a auto trans. Just tap threads directly in the drum for a fitting.

This is awesome! Hope to see another iteration if you figure out the running issues

Perhaps a sealed propulsion jet unit (like a jet ski) would work better with that configuration. Also, mounting the coolant tank or heat exchanger under the board would help keep it cool

a chain drive for transferring power to the prop would be a lot simpler and less power lossy solution

Toothbrush mic is underrated

centrifugal clutches , primary and secondary , primary engages and drives a belt that drives the secondary which slides the belt up to the top which gives you a cvt output that will suit your application, Im sure you could 3d print a working setup, springs and some weights to engage

I love this. I’ve always wanted to do something with one of these motors and this is sick!

To combat the coolant getting hot, you should design something that lets you submerge it in a container as it circulates so that the lake can cool the engine

Two ideas: 1) Gear reduction after the clutch, those small engines really like high RPM 2) Heat-exchanger (or radiator) for the engines cooling loop.

Yo Daniel, i absolutely love this. I've replayed this video a few times already. I've been following you for a long time ever since you made that busted rc solar car for a school project. And out of all the projects you've built, this is by far my favorite one. I love rc the solar stuff and everything in-between, but this little v8 is so sick! I really wish people would use these things. It seems plenty capable i would recommend looking at re jetting the carbs or seeing if the AFR values are off. I know you can open this thing way more than you've shown! Also, a video of more raw content of the boat i could listen to it all day long.

if you are trying to get it to not bog down in higher rpm you will need to advance your ignition timing in order for the firing to keep up with engine speed and be efficient. This is awesome seeing a model engine being used for something other than a desk ornament!

This is so cool. You should try mounting it on the outboard like the 7 Marine outboards. Also the smaller prop should have a higher pitch to take advantage of of the rpm. Btw if you are interested in other petrochemical vs electric unpractical comparisons you could try making a fixed wing .049 cox powered drone… and compare it to a racing quad motor powered one of the same design. Cox is remaking the famous tiny engine and has a throttle-able RC version.

Love you content bro, keep it up!

Man, it was incredible! I had this drill all rigged up with adapters and extensions, hooked it up to a 23mm socket wrapped in electrical tape, and even used a fan blade from a busted fan. Can you believe it? I managed to hit a speed of 8 kph! That's absolutely awesome! Keep rocking those baller moves, my friend! 🏀💪🚀🔥

That was cool! Edit: Subscribed, and looking forward to the next episode. And also going through your entire back catalog! 😜

I think that "bumpity bump" clutch will actually get better as it wears down. I know that sounds nuts, but it'll wear in a fashion that makes it easier to get into gear. :D That said though - a CVT might be a better option for this build. (No idea if that's true... it's just what my gut is telling me. LOL)

nice one daniel this is awesome i think the carburettors should have a 'high speed' adjustment screw for higher throttle positions try turning it in or out 1/16th of a turn at a time and see if it makes a difference. the fact that it bogs down when you open the throttle more whilst under load suggests to me that it could be going lean.

You pack so much work into such a short video, its amazing! Awesome job!