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Forum Index : Windmills : PAULVAWT Cycloturbine
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PaulVAWT Newbie  Joined: 15/07/2008 Location: United StatesPosts: 8 |
Home grown Cycloturbine. A must read. http://www.bulletbobber.com/wipopa.html PaulVAWT Paul Lieb plieb@neo.rr.com http://www.bulletbobber.com/wipoin.html |
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Downwind Guru  Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
The basic design has been surgested here several times over the past and is nothing new. I dont know of anyone here who has actually tried it but im sure it has been already tested. Pete. Sometimes it just works |
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Perry Senior Member  Joined: 19/11/2009 Location: Posts: 190 |
Hmmmm, another revolutionary articulated VAWT 3D rendering..... You are right 'a must read'. There is some pretty good fishing stuff on that site. Perry |
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MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
[Quote=PaulVAWT]I concerned about global warming, carbon footprints, and fossil power polutants and hope you are too! I am looking for some voluntary expertise in the wind energy field and computer simulations. If you wish to help thru donations contact me plieb@neo.rr.com. All donations will be used to file grant applications and or testing. Best Fishes to all, Paul Lieb Hmmmm . . . . 
Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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| PaulVAWT Newbie Joined: 15/07/2008 Location: United StatesPosts: 8 |
If there is another like it SHOW ME. Oil is used to make plastic. If we used 10% of all oil produced to make wind turbines we wouldn't neen to burn it. SPAM are you kidding me? Maybe I was wrong. Maybe this is a website for idiots to slam anyone with an idea. Thanks for the help! LOL PaulVAWT Paul Lieb plieb@neo.rr.com http://www.bulletbobber.com/wipoin.html |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
Hey - I said there was good fishing info on that site...come on! Seriously, we shouldn't rush to judge. It's just that many have seen this 'revolutionary' design with examples dating back to the early 1900's. Given the prior examples of this design and the fact that it is just a CAD rendering coupled with the 'must read' comment elicited the response you received. So, on a constructive note, what is it about this design that makes it that much better? Not the 'VAWT's don't need to yaw' 101 stuff, we're beyond that. What increase in rotor COP do you predict? Total effects on energy capture? How close to HAWT performance does this get you. What are the MTBF for all the added mechanization, that kind of stuff. If you'd like to have that kind of conversation we're all up to it. Open ended claims about oil usage for plastics and using that oil to make wind turbines will get picked apart pretty quickly around here. Perry |
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| PaulVAWT Newbie Joined: 15/07/2008 Location: United StatesPosts: 8 |
Perry, You are right I should not have written “Must read”. “Please read” would have been much more appropriate. AND Yes it is a pretty neat fishing invention - Thank You! If you consider how long man has been fishing and I was the first to invent "Planing Floats with Lateral Direction Control" maybe you will see that I am capable of thinking clearly outside of the box yet Make It Simple. The idea is to take advantage of drag and then lift as the wind speed increases. Yes there have been others that have tried to provide blade pitch angle adjustment using all kinds of gears, cams, cables, counter weights you name it...it has been tried. Making things simple is what I am best at. There are good lift driven turbines and there are good drag driven turbines but we need one that can be effective at utilizing both wind and drag. Making them out of plastic is a directive of some AWEA grants and there is perfect logic in the directive. I am not an engineer and don't even know what the heck COP and MTBF are and probably could not make the calculation if you gave me the formulas with the data filled in! But I do believe that my invention is viable more than other designs because I have an ability to understand the principles at work and make it simple. PaulVAWT Paul Lieb plieb@neo.rr.com http://www.bulletbobber.com/wipoin.html |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
Hey Paul, COP is coefficient of performance and MTBF is mean time between failures. What I was getting at is what is wrong with current turbine design that you are trying to solve with this particular design. If nothing, that's cool, it's still a fun project. If it's a plastic based turbine that could be interesting too. Perry |
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| PaulVAWT Newbie Joined: 15/07/2008 Location: United StatesPosts: 8 |
My design is just conceptual. The problem is figuring out the best dimension for the whole machine so it works as well as possible with drag at low speeds and lift at high speeds. I don't know how many blades are best either. I had to do a lot of testing to come with the BulletBobber to get it balanced and properly buoyant so it would flip direction when given a tug and I see this as similar but too hard for me! What is the best drag VAWT? What is the best lift VAWT? Now put them together making some compromises and you have what I want if the blades move from drag to lift positions automatically. Even if it isn't as efficient as others but works in wider range of wind speeds and never needs locked down it is an invention worth chasing. I contacted Little Tykes and asked if they would be the lead applicant in applying for a grant and they are going to look into it! They are experts at rotational molding large items. They can handle making the all the parts except the generator. I think the blades should be made from extruded foam cut to length. I designed it for Mass production and it should be cheaper then any metal turbine. PaulVAWT Paul Lieb plieb@neo.rr.com http://www.bulletbobber.com/wipoin.html |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
I did play around with a cycloturbine a few years back. Mine was based on some work by Ed Lenz, you can see his design on this page http://www.windstuffnow.com/main/darrieus_type.htm You can see pictures of mine on this page, top right http://www.thebackshed.com/windmill/photos2.asp The idea does work, and I think its pretty efficient, but there are a lot of moving parts. I used ball bearings on the center cam, and simple hinges at the blades. It would rattle and eventually shook itself to pieces. It was a fun machine to build and fun to watch, but I soon go back into building conventional looking windmills. The cycloturbine taught me to keep it simple, the less moving parts the better. A conventional HAWT, Lenz, Darrieus, Savonous, Miller etc only have one moving part, and its bearings. I think your's will work Paul, but you'll come up against some reliability issues. The tracks and pins is a idea that might let you down, keeping the track clean and lubricated. Nice web site by the way Paul, the fish wont stand a chance with you around. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| PaulVAWT Newbie Joined: 15/07/2008 Location: United StatesPosts: 8 |
The genius is in the design. LOL You think about metal and I think about plastic. The pins and the tracks are made of plastic and plastic is pretty much self lubricating because it is made from oil. And some holes in the bottom of the track would allow drainage. And like I have said, plastic is much more easily recycled than metal. The only problem I see is leveling out the torque. As it spins the torque from the wind will be changing because the blades are moving. This is a negative point I realize for VAWTS vs. HAWTS. With 4 blades the winds force / torque cycles every 90 degrees of ratation. A generator likes even torque all the time. I am looking into linear generators http://www.npowerpeg.com/ because they use linear force rather then rotational torque. The idea is to balance out the turbines potential torque disorder if needed with a linear generator by means of a crank shaft or something. Yes I konw I am getting way ahead of myself with worry about the type of generator. I also know this is The Back Shed and my shed can't handle making plastic parts from plastic chips. I need a big rotary and injection molding plastic comapny to help out! I also need a big foam extrusion company to make the wings. Anyone ever try for grant money? Best Fishes, PAULVAWT PaulVAWT Paul Lieb plieb@neo.rr.com http://www.bulletbobber.com/wipoin.html |
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