Here is a handy tip for you! Expanding foam does not stick to cling film. If you need to make a mold, spray it with water and cling film will stick to it, Then just fill with foam, pop it out and the cling film will unpeel. Watch out for folds in the film.. Thanks!
You know whats hard about your vids? CANT QUIT.... WATCHING‼️‼️‼️ ONE RIGHT AFTER ANOTHER 😁😁🥳🎉🎉💥💥💥 My kids think im nuts because i share so many vids. 🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩
Such wonderful video, not only for the building system, but for the comments about the energy transformation and what is important in order to eficiently energy transformation and collecting.
Beautiful explanation! When scavenging energy via rotation, the mechanical scavenging part is what's interesting/challenging to get good. Converting meaningful power from rotational to electric isn't a problem that needs solving. About wave power, it is notoriously difficult to scavenge well, and, if you have meaningful waves there's typically more than meaningful wind, which is extremely easy to extract useful energy from, compared to waves.
- showing everyone that you don't have to be perfect, off the hop, practice makes perfect... (plastic welding is a little of a black art (several methods from shoe and iron, hot air gun and - filler, staples plus filler... - the general idea as demonstrated - fantastic seeing the progress in one place. Democratising small power sources "could" make a difference for somebody - out there.
Great use of the CDs! When you talked about the bigger hole making the disk more flexible it reminded me of how tile and wood can become flexible with the appropriate cuts. The water jet channel has done them I think, pretty cool!
Thanks for taking your time champ. To be frank i would love you putting fan generators as well as this to the test for a tiny bit longer. One of your viewers will want to put this screw into the creek they have in their backyard. Thanks again Sir
Great video Rob! Scavenged energy devices are very cool! I've often wondered why they build speed "bumps" to slow traffic down when they could build speed PUMPS and scavenge the energy & still accomplish the same goal. Similarly I keep waiting for someone to figure out that a line of small VAWT turbines would run at TWICE the efficiency 24/7 if they were placed on top of the safety barricades that run down the motorways.
"It should make anybody think, I think..." Haha.... Too true my friend... Cheers! I want a video about all of the youtube channels you have.... I keep finding more! lol...
Very cool! I think that in the waves you should hold it sideways at some acute angle. The wave will hit it from the side and spill over, and then as the wave reseeds, the water will run out. That will also stop the reverse turning. I suppose that could generate both ways and be rectified, but there is probably so much mass in the screw that changing direction would not be very efficient. Thank you!
I thought rob should have faced it towards shore and set it so the waves lapped over the tóp back ... Perhaps a funnel shape to direct the water into the channel
Loved this, thinking outside the box, I have thought about these types of screws and the difficulty of making them. This opened up the clog in my thinking about this.
I loved this video! The ideas here have application almost everywhere, since streams of water occur almost everywhere. Though not worth the trouble, you could use a tubular downspout and generate energy from the rain coming from the roof, and still capture the water to water the garden! I especially like the explanation about a rock rolling downhill, and how the energy is the same as the energy expended getting it to the top. Very intuitive, everyone will get that analogy. So I was thinking about the sea/wave energy and really you could put the screw underwater then have a one-way roller-clutch to prevent it turning backwards, or just rectify the output so you get energy when the waves come in and go out. Anyway, a great video and I appreciate your time and effort researching, making devices, and recording, editing, and posting your videos. I know it takes a lot of work. Much appreciated!
Also, if you add more torque by increasing the diameter, you could use a gear reduction to speed up the output with less torque, but applied to a heavy flywheel, allowing for faster output at a more controlled speed to the generator, once started it would continue to spin
the Totnes Transition Town has 2 Big Archimedes generators on the River Dart in Devon they are amazing to watch especially as they are in an oxbow pool corner where the tidal reach turns, fish etc can swim up stream through them without harm + local seals come to fish & play to the tourists in summer
If the extra weight and reduced flexibility don't cause too much of an issue, it might be easier to glue the CDs together by using two layers of CDs, offset by 180 degrees, that way the ends of two CDs can meet in the middle of the CD underneath (from the second layer), allowing to put the glue on the flat area, and then half a turn further, the CD that was underneath can meet with the next CD of the same layer and be glued to the middle of the CD from the first layer. Carving a circular guide in the wood block would also make it easier to line up the CDs. It might be worth mentioning that the easiest way to drill the 40mm hole in the center of the CDs, is to use a "hole saw drill bit".
Oh man has he done it now! Confirming my suspicions are really now truly beyond belief, there can only be one recourse to hence then deliver, a rather plain and curious means by which to harness a very peculiar River.
Not related to the generator, but I do recall making an origami pattern for a CD case, single paper and no cuts, that had a tab to insert in a lock. I was amazed with it and and was able to make it with regular construction paper, but obviously, I had to be careful putting the Disc in and take it out as it could scratch. I made it using a plastic CD (think it was a protective addition to a CD stack bought at the store) which was about a centimeter larger in diameter than the typical CD. It was the first real pattern I designed and was a pleasant memory I felt like sharing lol. Maybe I could use aluminum cans for CD substitutes though, as they can be cut into sheets and are all I have on hand. Maybe I could even make a mold using the CDs and pour molten aluminum into it to make the screw? Definitely got the ideas flowing ;P
Cool project and a fascinating simple principle. Where I live in up north, in Aberdeen, there is an Archimedes screw the size of a bus! I wish I knew the power output!
This is exactly what I want to do on my drain pipes and waste pipes...I've 3D printed a wheel that rotates when the water flows through it. Every time a toilet is flushed or water goes down the drain, electricity is generated and can be fed back into my solar inverter back to the grid.
If you make the blade out of copper and design the water capacitors you could create more electricity! You could use the weight and a large container of the water with three one-way valves and pump it up into another container and continually circulating the water back down to fill up the container that pushes against the one way valves going back up say 50 feet!
Good project. I also watched your gearing video and the maglev bearing one, and many more. Seems to me you could put the 3 ideas together and wind assist it at the maglev end and get substantial power from a hose pipe flow of water
PS obviously adding the Seiko mechanism & ..... your other optimising shinnanigans will be amazing {at input mechanical motion & electrodynamic end of the spectrum}, am looking forward to playing with these for community deployable kits especailly with permaculture shallow terracing swales & for that matter Clacton seafront, hope to get the pier to agree to experiments too
I didn't even think about using a screw on my water main. since the water board only sends water into the house, I don't need to worry about going backwards. I can use the entire surface area of the screw.
Awe the queen Ace of 💕 a bit mind you an exception is for companies of an intrepid motorcycle. British bikes had me smiling in them wiring department reference days. In America known as black death is by positively-grounded attacks of seq-diodes. Guided heat seeking missile toeing loved it. Some of the best bikes for customizing days. Even had their own compounded pitches in threading find a tool selection & famous universal leaking carburetors. At the same time had some of the best aircraft on the planet. Japanese took the market basket quote effect subsidiary uni-lug.
Cool stuff you are doing ,Put your 3d printed gears on it and your 3d printed serpentine coil magnet generator on it .I’ve got loads of projects on now tho lol , wind /water / solar projects / building a vawt and just made a large hand or peddle generator from a cross trainer machine and getting 124v dc out of it ,just added two microwave turntable coils on it .
Instead of a larger diameter, you could use some pipe to have the waves pump up to a smallish reservoir above the generator and then average out the waves into a continuous stream of water. Adding a shield so that the only water that hits the blades comes from above would also work well for one way flow.
Your interlocking sun and planet gearing system might make that quite the producer if you had the properly matched generation system from the driven power of the screw.
Can you start a series on mechanical conservation of heated waste water. Usimg thin membrane eeverse flows and thermal regulated bimetal switching to divert heated to reservoir tanks?
The more height and the more turns one adds, the more torque one can develop [each turn adds a little bit of torque, so they accumulate] so they could arrange a generator/alternator based on the torque reduced by gear multiplication to any speed that the total weight, speed, and falling height the source of water can drive. Also, you might be able to use 3 liter soda bottles for a tube, not sure, depends on the difference in diameters.
When in the sea, the waves caused the spiral to rotate clockwise and anti-clockwise. You could place you 3D printed gearing to cause the output of the spiral to be in one direction.
What if blades were made out of a material that directly can absorb electrons in the moving water, removing resistance of rotation and gear. Funnel the water to increase maximum flow before entering the system through spinning motion which also increases electrons. For future reference: build pipes with electron uptake through either ceramic alloy inside or by material itself from scratch (requires atomic structuring). Also, it's enough generate a pulse. Importance is width and height of amplitude converted inside the electronic system...
I've been thinking about using an Archimedes screw as a propulsion system in a boat. Running bow to stern inside a channel pipe so as to be ducted. Seems like the large surface area against the blade would transfer energy to the boat well. Have to put that idea with the 100s of others I would so like to try but probably won't get around to in this life.
Recently saw a video where the Russians made an amphibious vehicle. Cab on top of two, side by side, long barrel shaped cylinders with the Archimedes screws which they recently put back into production from some 30 year old design. Moved and steered like a tank through swamp effortlessly.
In previous videos you made a Tesla turbine with CDs. What if you took one of these screw stacks and used it instead of the separate disks? Also, have you considered the amount of water moved by flushing a toilet? Both when the tank empties or fills, or the water going into a daily shower?
Here's a suggestion. Cover just at low water level & everything that flows above the open will drain down & rotate in one direction, charging on every surge of water even if it's 2-3 cm
it works better when the helix angle of the CD's is at 45 deg......by stretching them apart more etc.......this is in effect reverse driving a screw that is a characteristic of ball screws in CNC machines.
Interesting idea, but I can't imagine that it would do much except increase the surface area of the disks and introduce turbulence and alter the boundary layer flow on the disks. In all of Tesla's work I've read he aimed to create smooth steam flow, to try to minimize turbulence. It's highly possible it could set up some weird pulsing and internal counter flows at certain rpms and flow rates, causing vibration and possible self destruction.
It would be interesting to compare the energy needed to pump water uphill to the energy gained in generator mode. Your efficiency metric then is not affected by the scale of the device and size of the motor. All sorts of symmetry assumptions and allowances for imperfect srals, etc...
You can create a one-way flow from waves by letting the waves flow over the edge of a reservoir by HYDRAULIC DAMMING* and draining the water back through the device to the sea, thus reproducing the steady river flow. * HYDRAULIC DAMMING; if you restrict flowing water into a narrowing channel, the surface will rise higher to accommodate the flow; you are using the force of the waves to propel water up into a higher reservoir than the waves would otherwise reach.
Looks like yours is the only comment with any real-world grasp of physics. Everyone else seems to be dreaming of perpetual-motion free-lunch generators!
You could make it a more effective wave generator if you put the output into a seiko magic ratchet mechanism and a flywheel. That would let you get the power on both the inflow and the outflow of a wave. And, like you said, change the slope. I would also modify your end caps so that the support for the screw does not block the flow of the water. If you made them to arch over the top with a tab (about the size of the center tube) sticking down with a hole for the screw shaft, then you would have a better flow through the trough. You could also build it to float on top of the water (the foam and builder's board are perfect for this... pontoons?) with the screw sticking down into the water. Then waves would pass under it and you would not have to make it as waterproof as you would if it was submersible. If it was kept in one place by at least two posts (for stability), waves passing or water flowing by would generate plenty of power. Posts would also make limiting its vertical travel easier. Just put stops where you want so that it does not hit the ground or come off the top of the post.
How about using a converging incline to take the sea water up to a reservoir then release back down over the screw? really not sure how big it would have to be to get a decent amount of power though
Would it be possible to put magnets along the screw and then put coils in the housing so that you don't have to attach a motor/generator to the rod? That way the motor wouldn't be exposed to the elements. What kinda of effect does the screw shape have on generation? What should the coil shape be to optimize generation from a screw of magnets?
I'm thinking keep the device out of the ocean and use either a ram pump, or a set of check valves that pumps water up to the top so that it can run down the entire screw back into the ocean. With the check valves setup, you can have an inlet as the wave goes inland and one as the wave retards. There's probably something better than these though.
The way you made it means you have to have a small clearance between the center spinning screw and the outside channel. Now imagine if the screw was sealed inside a tube. In this way there would be better efficiency as there is no gap for water to slip past. Yes it does mean the entire tube will turn. No problem. Btw your approach of doing the mechanics first makes common sense. You don't start with a 10 mega watt generator and the hope a small water wheel will turn it. Only once you know the mechanical power you are in a position to adapt the output to suite a generator of enough power to be able to convert the mechanical to the electrical power. CD are definitely not for land fill yet. I wonder how much power I can get out of 1 meters worth of Fleetwood Mac CDs spinning away???
What if you scaled this way up, and ran it from the top of a mountain to the bottom, but designed it to run on snow instead of just water, avalanche power!
Empty cans with air locked in them as pistons attached to conrods then onto a drive shaft that could match the wave height to next wave height distance apart. So, all pistons rise at the same time. Magnifying the lift in the wave? Need some way to match the pistons to the wave height at a given wavelength. Wonder if a hinged conrod bearing would let the wave itself center the wavelength. All conrods would be on the same side so they all lift at the same time. So, each piston went up at the same time. What I'm trying to think up is a multiple magnification of wave height over many waves at the same time. 0--0--0--0: 0 = wave height; -- = distance between the waves. Which will be variable. Because the distance between wave tops is variable. B idiot, put them on the one wave. So, all get lifted by that one wave. Which would be a fixed rudder at 90 degrees to the wave. And the pistons. The size of the pistons would change the power of output. ????? Cheers.
At this point with the way technology is evolving, they should just start marketing CDs as "instant circles" for DIY projects. They are way too useful for on the fly tinkering
