... Well, then, here are the results of trying to heat-form the 0.065" ABS sheet into the leading edge of a c-rotor. As I learned earlier with forming the "c" part...
I'm pretty good at electronics and computers, but when it comes to making mechanical things, especially out of heavy metal I have no experience. Up to now, all my turbines have been small and based on 1/2" threaded rod that I got from Home Dep...
Hello Vawt folks, ... ... Well, here it is, my first attempt at a Helical Vawt using a 12 foot long Polycarbonate panel cut in two with my tin snips. ... Swept area is about 18 Sq. feet. ... ... I am very excited about this one because it is...
Does anyone have a reasonable reference which can explain the pros and cons of various NACA airfoil profiles??? ... ... I have been playing around with building a small VAWT for a while and so far everything I'm doing is based on a NACA63-4-021. I...
hello friends ... Today i build a 50cm Lenz 2 Turbine for comparison with a 50cm C-rotor on my teststand. ... The funny thing is that a friend of mine was helping me to build the turbine, and his last name is Lenz too, no joke. :) ... ... For now i ...
Time to get the performance ball rolling ... ... ... ... http://www.youtube.com/watch?v=djoMJORGAog ... ... -- Edited by dereksoftstuff on Tuesday 26th of January 2010 03:10:01 PM...
Me he fabricado un molino , basado en la turbina Lenz, me gustaria saber ... cual seria el alternador optimo, es decir numero de bobinas y numero ... de vueltas de esta. ... Un Saludo...
Hello Guys, I've been reading tones of this from your sites and seen every one's opinions about the different designs, projects and their efficiency. Today I've desired to post my first project Idea witch I would like to add i...
Hello, just joined friends. Hope I ask this question in the right place. ... ... I am currently making an 18sq.ft. Helical type VAWT. ... I was wondering if the twist angle of each blade HAS to bend around 180degrees? ... ... If I can't twist e...
I started working on my OpenFOAM help site. My intent was to set up step by step instructions to lead someone through setting up the software. I even cleared a disk and reloaded everything from scratch so I could do that steps as I wrote it to make...
This turbine is based on the Jellyfish that was the result of my genetic algorithms. I removed the tail and only used the round head and unusual angle. In simulation this is nearly as good as a Lenz2. But who knows if we can trust simulation? ......
These youtube videos show some of the designs that have come out of a German discussion board something like ours. The posters name is VAWT1. The vawt design is something like a Lenz2 but the fin is curved to the radius of rotation, and meets the ...
Can anyone point me to a profile of the NACA 0018 airfoil? I have several documents that have some airfoils, but have had no luck finding this one, as well as others commonly mentions in these pages. ... ... Thanks, ... ... Turtle...
Background: I have an RV Park/Campground in Colorado and I see a ton of problems with batteries. At the end of fall I pull batteries out of most of my equipment and place them on a rack in a place that doesn't freeze then I make sure they stay fully ...
Hello, ... ... i'm benoit and i come from north of france ... i started to make a vawt type Darrieus with savonius ... it's difficult to me speak english.... ... ... here my project with no wind ... ... dimensions H / 1 METRE ... D / 1.05 METR...
Does anyone have a spread sheet of what pole/mast material and dimension would be best for any windmill, given factors such has: height, weight, w/ or w/o stays?...
Since at least one of you has shown an interest in using openfoam, I thought I'd show the mesh used to run one of my simulations. ... ... These are screenshots from a program called gmsh. Found here ... ... Gmsh is a program that lets you generate...
This is a wild looking machine ... ... ... ... ... http://www.youtube.com/watch?v=iuSO2YA_QT0&feature=PlayList&p=38EA12C9CFB09E4A&playnext=1&playnext_from=PL&index=67...
Hi is there a calculator or some sums that i can work out how many turns of a given awg size i can fit in an area ... i have two 14.25" rotor with 16 mags on each rotor ... giving about 2.68" between each coil at the inner edge of my pl...
... looks like pacwind (wepower?) has bought cleanfield ... http://www.wepower.us/news/38/wepower-signs-letter-of-intent-with-cleanfield/2010/1/ ... pacwinds big new mill ... the one they are going to use for the times square array ... ... ... ...
I thought I'd start this thread to show off the simulations I run. ... ... Here is the latest...... ... ... ... ... ... By the way, the torques seem to be reasonable if you compare against the equation: F = 1/2 * density * area * velocity ^ 2 * ...
long video of turbines putting out 20 amps and 14 volts. winds were in the teens to low 20's as a blizzard went thru here in Wisconsin. We were supposed to get stronger winds but by me they never really came. I think there were some stronger gusts a...
Hhttp://blog.makezine.com/archive/2006/06/how_to_make_a_slip_ring_p.htmlere is one way to make a slip ring yourself. Mine was different but the same Idea....
Ed the characteristics of the LC circuits you describe sound like they are modeled with perfect inductors and Caps. As you know each inductor has series resistance and caps have series resistance and some leakage. You did mention losses so maybe yo...
I am in the process of building my VAWT and I am interested in a helical VAWT. I have been trying to locate plans for one. Also I would like to see if anyone has made one from scratch, their materials list, and outcomes. I was thinking of one abou...
I found Javafoilhttp://www.mh-aerotools.de/airfoils/jf_applet.htmfrom the postingVAWT Design Spread Sheet IntroductionsIt's pretty impressive.But I'm looking for a simulator that will do 3D simulations.Does anyone know of one? ... If not, how about i...
