Have you considered printing one, sanding and refining it then making a mold with 2 part silicone. Then you can quickly cast multiple copies with 2 part epoxy resin, all smooth and ready to stack.

You are a God send to those of us who love to learn. Even if people don't DIY we still learn a ton of stuff. This is a welcome channel. It helps to drown out the stupidity in this world today. Thank you Sir. We love ya

Sent my son a lengthy, excited text about this project. You’re bringing families together! ❤😊

Love your enthusiasm for what you do!

Very much enjoying your show. I think what you’re doing is important and useful; in addition to being very educational.

Love how much fun you're having testing all these ideas out!

The jolly eureka laughter is worth listening to all day! Gold brother! Thank you for these videos - gives sparks!

Thanks for sharing this, fascinating stuff as usual!

I love how excited you get about this stuff.

Fantastic work Rob! 👍🏴󠁧󠁢󠁥󠁮󠁧󠁿🇬🇧

Waiting on the next video Love the way you approach this no attitude no BS.

Just Incase you didn't know the Tesla Turbine doesn't need to operate at high RPM's to achieve results, the efficiency increases as the surface area increases and the gaps between the blades decrease. Tesla also filed a patent for an upgraded turbine number 186,082.

Theres a paper out there on making "cupped" Tesla turbines, the idea came from wood cutters needing to be a "cupped" blade so it straightens as the speed increases and the blade gets hotter

thats delightfull. brilliant observation.

Thank you and thank you!

Oddly enough, I had thought of this many years ago. Idea was to make this from oil funnels. If you were to allow them to move freely and wobble, the effects will be much greater. Maybe a small plastic spring between each for movement and friction. The wobble is for low airflow running. Love everything you are doing.....

Can't wait! Your laugh is infectious! 💜💜💜🙏🙏🙏

Legend ❤️ this is what we need!

Great to see the spirit of British Inventiveness lives on!

Brilliant Rob , Nice to see someone thinking outside the box. Its a fact that you never know if some thing is going to work until you try it. If you dont try it you will never know. great video as always.

Love it! 👍

I like your your experiment. Thanks for knowledge.

I Just love your positivity ...

What a teacher you could have been sir.

Spiral grooved hyperbolic nested discs will lead you straight to Viktor Schauberger... I'm very excited to see what you'll do next!

For an omni directional you may want an external guide deflector, either in four or eight vanes, coming out in a bit of a pseudo rosette, (other descriptions may cause issue as seen from the top), such that fluid movement is guided to push to single direction of spin, as well as no countering forces.

Thank you for mentioning it

Really enjoying this and it all makes sense, but it is above my pay grade. Respect from Africa 🇿🇦

the conical tesla turbines design looks similar to of a self inflating valve..which kinda makes sense .. the two elements of tesla turbine withat that darwin base generatorstacked almost seem to create that toroidal effect ..which is also making big advances in blades for drones and shallow boat props... ..very intriguing series ..great fun . cheers

love the new approach

Thanks for what you do! I recently found this channel, and I'm really enjoying the approach that you take to your projects. Always interesting!

Brilliant!!

Honestly I was amazed to see those funnels actually turn!

Greatly enjoying as always Robert, been keeping up with all videos.wondered if a rough or dimpled surface would grip more air to get better turning force for the same input over a smooth surface. Fantastic your free uploads, these printers seem a great way to do complex shapes For many projects. All the best Rob. Shame Luke didn't get the battery for twingo.

Robert you are a modern day Thomas Edison..thank you for all your work and for taking time to share

I wish I was as happy as you seem to be. Enjoy your show no end m8. 🙂

Awesome! Looks great! 💯

Robert Murray-Smith , an easy way to make them as fine a blade and minimize the gap, print a male and female solid form and press thin aluminum sheet between them. 3D prints are strong enough to form 1/8 mild steel sheet in a hydraulic press if your careful. As for Aluminum stock , use old printing sheets from your local news printers . Can be had for very little money , Soft enough to press in shallow shapes like this but hard enough to be useful.

I just found this channel, and I am already hooked! While watching this, it made me wonder if the inside of the cones could be designed to utilize the coanda effect to create low pressure inside the system and suck even more air in from the top? Some of the designs I have seen get up to 15x more air that way. It would be like a Dyson's fan laying vertical where the Tesla Turbine would replace the small fan in the base. Also, when the prototype is held up, you can see through quite a bit of it. I think fins the start out at the edges (connecting one layer to the next) and spiral into the cone would capture more air. Basically make it so the entire cross section catches air, not just the cone in the middle.

Love the man’s sense of humor.

Fantastic ! My favorite channel

Saw the stacked cones, made me think about Djed Pillars. New rabbit hole unlocked

I am just amazed at your ZEST for learning and teaching others Robert. Can you say NOBEL PRIZE fella ???.

Robert, the cylinder version will work the best. But you have to enter the air into the outermost slot close to tangential, through a few narrow ports spaced around the outside, and step it down to each smaller slot in series as it goes back to the other end backwards and forwards till exiting at the core.

Love the can do way you work 💚

Stacking cones like a top with the center pulling a vacuum up the center adding the ventury effect.

spiral grooves was exactly where my mind went when you were talking about the cd's at 2:32 after seeing the path of fluid line on the diagram

I believe that creating the funnel shape will assist the working fluid in exiting the turbine, decreasing the residency time of the fluid pulling the spinning armature along with it, decreasing power and efficiency. You want flat discs so that the centrifugal force acts on the fluid to squeeze as much kinetic energy out of it before it exits. Of course, if you want as accurate info as possible, you should consult Charlie Solis who's established himself as having the most powerful/efficient Tesla Turbine on KZfaq.

Just. Wanted to mention again….. thanks for numbering your productions …. ….

I’m with ya up to the severed fingertips. Great series!

I'm here for the journey on this one 👍👍👍👍👍

A tesla turbine can work with a single disk, cylinder, cone or even just a ball, as the defining function is the interaction between a fast moving medium, a surface and the drag created on/in the boundary layer(s). More discs just mean more surface areas for boundary layers to happen. And you can nest discs/cones much easier in a way that the moving medium passes over the surface perpendicular to the axis, then you could with a cylinder. Adding dimples/bumps to add speed/power could be a way to increase boundary layers and interaction with the moving medium.

Excellent avenue of inquiry. I have some knowledge of the tesla turbine and parabolas. I can see a lot of promise in this design.

Very cool! I don't have the time to try this myself at the moment, but I wonder if adding lateral supports on the outside and removing the brace in the centre would make the flow more uniform. The lateral supports could possibly be wing shaped to give it a push start. Then the output shaft should be the same diameter at the cone openings, giving a lot of surface area for magnets.

The wishing well funnel looks perfect for the iron powder heater from the video Perfect fuel.

Add blades to the supports canted so that each one helps form a 4 sided blade running along the length of the turbine.

3d printer reqd Love your enthusiasm Good man👊🏼

Always interesting.

A larger version of this would be an amazing way to drive a sailboat. Omni directional capture. Just amazing!

amazing work, keep it up

I like watching technical videos, even if I don't understand, I can still learn something!! ✌️👍

Spiral grooves make perfect sense.

In CAD, create a cube, then extrude the shape of your cone from the top face of the cube. Make sure that the inner most circular zone of the cone is also extruded to create a cylinder sitting proud of the tip of the cone. Save this as a separate solid shape. Once this has been done, create 2 x22mm square holes running all the way through the cubed base to the opposite face, from the left to the right edge. Then, use the CAD slicing tool to slice through the front face in 22mm vertically orientated layers running from left to right. Finally create 2 x 22mm x the left to right measurement across the lower edge of the front of the cube battons. Save this as a separate file containing all the sliced shapes + the 2 X battons. Have the job-lot sent to a plywood CNC company (maybe give them some advertising in exchange for the CNC time). Once they have cut the basic shapes for you, have them stick each of the layers together such that they are slid over the battons to ensure correct positioning. Once the solid shape has been created, have them use the solid shape file to have the curves milled to the required dimensions based on the solid object you first saved. Then, it should be a simple enough task to fibreglass your cones using the former you've just created while using the 3D printer to create some spiraled separators to keep each layer the exact distance apart then need to be. Could design the cones and spirals to slide over a plastic pipe during the construction phase to ensure that each layer is perfectly positioned during the layup and gluing phase too.

As with all rotational energy generation you will need to gear the system to stop overspin. An external cylinder could be lowered or raised to close off wind access to each cone allowing the system to be completely smothered during storms or for maintenance.

Cool, thanks!

Cant wait to see a working prototype!

My first idea was to corkscrew the disc's after watching the marble circle the funnel.

Hello Robert, I recently found you. Enjoying TNT immensely. The physics behind Tesla's Turbine is very different to flow dynamics - suggest you take another look at what the old genius found. You'd learn, for instance, why the cylindrical print hadn't a chance of working. Keep on challenging our ingrained assumptions on your search for a hyper-efficient Energy Grail, I'll follow with vicarious enthusiasm.

LOL, I clearly remember the first time I took a significant chunk off the tip of a finger. I was holding a rather large vacuum AC motor, had the tip of my left index right next to an inner cooling van vent. Flipped it on after a rewire job, schlurp! Whacked it right off square.

This is why I like you Robert! You think very similarly to invention concepts that have been bouncing around in my head for decades! You have the skills to make them reality though. I much enjoy watching your process.

You personify all that is right with humans. Building up the ability of hundreds of thousands of people to become able to improve the understanding of important tech for themselves and their communities. You reach millions of people like this. In a very good way! You rule! Genius at work for nothing but helping humanity progress. The world will be massively improved by your influence on evolution a thousand years from now. Thank you so much for your invaluable contributions to a brighter future!

Man this Darwin Turbine project is going great. So many brilliant ideas one after the other, so many things to test... I hope to construct something similar this summer, based on what I am learning from you of course. Keep the videos coming mate, cheers

Spacing between profiles is critical, informed by the "boundary layer" - an emergent microscopic property - and the viscosity of the fluid entering the Tesla Turbine. You'll need to tinker to get it right, might not be possible to 3D print if the goal is highest efficiency but I certainly hope you can achieve a radical result.

Just found your channel - learning lots and feeling inspired. Just wondering though - when is the flux capacitor going to crop up as part of your design 😊?

I so look forward to your trips down the science rabbit hole. Thankyou for the hands that go where our minds have only wondered. Tesla turbines are a favorite. He had a grasp of boundary layer physics before NACA had an airfoil. All the horsepower derived i n a system dependent upon aerodynamic drag will be pulled out of a transition layer less than a thousand of an inch thick called the boundary layer. Tesla was brilliant enough to contrive a turbine where the close clearances between the discs allowed for back to back boundary layers that allow a zone of laminar flow in the center. The problem then became one of surface area. Big discs. Unfortunately, no materials available could withstand the primarily centrifugal forces induced by the high rpm required to make a steam turbine practical.

awesome, keep going dont stop, bet youl end up with something world changing...

cant think of the name of it but its the force that when 2 high trailered artics drive side by side on the motorway pulls the 2 vehicles together, and this was part of the thinkiing in teslas original turbine before he went on to using liquids, same thing happens to bikers overtaking artics on the motorway as the wind convection off the truck tries to pull passing motorcycles under the truck

Robert, your enthusiasim and positivity is great! But it would help to explore the fluid dynamics a bit more, with mathematics so we can compare the different designs. Great work

Love this wind funnel concept you could simply add more funnels to capture more wind but still keeping it relatively Compact you could put something like this at the side of your house and you wouldn't even hear it compared to a blade or a fin turbine

Fantastic video, as always. Is there also an stl available for the unmodified funnel that you're tinkering with?

"... cutting the ends off your fingers." Rob, that was nearly a negligent-homicide charge; for how hard I was laughing, I could have died!

You have the vortex- great idea now maybe imbed a fibonacci spiral design -spiral pop out on it or groves on it. Grab more air? Or fluid? Cool fun work

You get another example of this boundary layer at work when you spray water from a hose, but put your thumb over the hole to create a high-pressure fan, then stick a paint roller in the fan so the fan touches it barely at first. in a second or two it will spin up like a powerful flywheel

Laughter is the best medicine!

I was wondering if you could use alternating dissociative metals for the inner turbine wheels and use an electrolyte solution for the propellant to create HHO gas while the turbine is running. Of course the whole unit would have to be electrified though. Loved this video!

The formula I heard was 3feet diameter disks separated by 0.4mm gap at 50K RPM and driven by dry steam. This combination was expected to be the highest efficiency except that the materials he tried couldnt handle the tensile stress and that made him pareback on the specs. Had Tesla been able to work with graphene, he might have reached a marketable product, reliable enough for mass production.

It’s the Eddie’s at work, variable space would be ‘brake and acceleration’, but Tesla already knew this and used it in valves. The intersection arrives when we leave the bench and work in three dimensions, not two in the ‘flat dimension, in practice’.

This channel needs an addiction warning. Excessive faith in technology also deserves one. It's a delicate balance.

Itll be very interesting to see the effect of spiral grooves

I had a kid's board game that had a funnel and used a marble rolling around as a timer, forget the name. I wonder... painter's funnels? They're conical. Spiral grooves... you don't need to do but a couple cm worth of rework. Use a NACA airfoil where the cones hold together, pointed in the direction you need the generator to go. A high-lift glider foil might be best. Stack lots more in an off-center spiral? Fire alarm horns? Old PA speaker horns?

I think its the joining bit inside the cones that are causing the rotation

Even with waves it will make quite an impeller. So fun.

The exhaust should feed back into the intake to allow for another layer of compound effects. Then low pressure is only a worry when rotation first begins.

Use the hyperbolic funnel pattern. The Size Ratio needs to change, The spin will happen naturally, It best not to disturb it. IS IT FLAT LIKE A CD, OR CYNDIRICLE? Stagger the vents to go from smaller to bigger. While thinking about the curve flow. Also, Jib sails on boats. Forward flaps on Jet Plains. Building Air pressure. Rear sprocket on a mountain bike. Fractals Ty for reading me.

A while back, I conceptualized a Tesla Turbine SIMILAR to this, the key difference being that the torroidal funnels would lead to the opposite funnel on the other end. The idea being to create a Torsion Field engine that could convert gases into a plasma. Maybe someday I'll finish sketching it.

Fibonacci spiral is truly an amazing shape, and sequence of numbers, there is no place that it cannot be seen.

I wouldn't use spiral grooves. I suspect they would be wind/water velocity specific. Maybe a sand paper like roughened surface to increase the laminar friction between the air/water and the turbine across all wind/water velocity ranges?

Excellent, I was just looking a Schaubergers work and had similar thoughts, funny timing. I expect these could be made with metal spinning process on a lathe, too.

I absolutely love your work, I wonder if part of the reason you get that spin is from the bumps and grooves left by the printer as it prints the object, or is it absolutely smooth? also due to the printing wouldnt the cones already have a spiral? Albeit very thin, even thin, the air forces would still be taking advantage of that. I'm not a 3Dp expert so some of my questions come from a place of ignorance. Is there a medium that can be printed very smooth?

Great stuff, as always. But I thought the main principal of the Tesla turbine was the working fluid exits through the central axis so that the fluid accelerates as it travels, since the area of the disk is constantly decreasing and the volume of the fluid remains a constant. Hence the insane RPMs generated by some of these devices.