I'm starting this thread to hold all comments / questions / discussion about the spinoff results I'll be posting over the next few months. ... ... The actual results will be posted in the thread called Spinoff Results....
This is the largest of the the three types of wings I have made. Starting with the first successful model and then building a 3' X 4' prototype I was confident to go to the big enough to do something size.Here are some photos of the 4' long x 15&quo...
... I'm contemplating building another windturbine (aren't we all). This one would have a 0.5 m dia Lenz2 inside a 1.6 m dia turbine with NACA0018 blades with 130 mm chord set at 0 degrees. The whole thing would be 0.5 m tall giving it an area of ...
... My first post on VAWT.ORG! I have an idea that needs a hearty review by folks with a lot more knowledge on the subject then me. I am a draftsman not an engineer. I draw things and ...
I was telling Steve what kind of rpm I was getting on my lift blades and he was kind enough to correct me and suggest I start a thread in regards to the circumstances of my error. ... Not being a techie and using technology at threat of my own emmine...
I just made up a set of intentional lift blades (2) and thought that it would be a good thread to look at as it gets debated on the other threads quite a bit and some examples of one way proving out the other and the pros and cons might make for an i...
For my last wings I needed some foam cut. It turns out you probably have the materials in your garage right now. ... Buy some foam insulation board at the home store. It comes 2" thick is dense and light. Mine is blue. It isn't made of beads...
I'm creating this thread to hold the spinoff simulation results. I'm going to keep it protected so that this thread will only have results. All comments should be posted to Spinoff Discussion. ... ... For each turbine tested, I'm going to post as ...
Well im a newbie in this field and have already studied basic principles from different sources....im trying to design a giromill (400 to 500 watts....i think its acheiveable...or not )....but the problem is i searched a lot but didnt get the basic f...
I was trying to put together the rectifier for the alternator in my garage last night following these plans: ... http://www.otherpower.com/rectifier.shtml ... ... I got stuck not even half way through. I am using a terminal strip instead of termi...
Here is my latest (as of 6/12/10) try at a VAWT, or at least my start at it. ... ... I started by making a hub out of wood on a lathe. The wood is round, but not uniform density so there is already a slight imbalance in the hub. I put carriage bol...
When I simulated the remkick, I saw that it got to 58 RPM and didn't want to go any faster without a push. This behaviour was very similar to the NACA0020 in a lower wind. I decided to go in and pick out what was happening. Here is what I think is...
Here's the address for the video. Hopefully the author will tell us more. I have watched his videos. I can relate to his approach and testing methods. As happens to all of us, the day we video the amazing invention there is no wind. Patience is a...
... ... ... I completed fabricating a new VAWT. I still need to attach the PMA. I will first try direct drive and if that proofs not to provide enough RPMs it can easily be configure with a pulley and belt drive. The proto-type shows ...
I thought I'd start a thread for flat bladed turbines. ... ... I built my sign turbine before I was on this forum so there is no thread. ... ... Here is the video for the green one. THe blades were elliptical 9" x .5 so that was pretty flat. ...
Peter's words: ... ... ... The VAWT on the model is the red, larger (4 foot diameter) Sharp VAWT in the photo of the two VAWT lying on the sidewalk. The right angle transmission was for an electric hand drill. It had a reversible 2 to 1 gear rati...
Here is a set of rules I've put together from a half dozen research papers. The main thing is to choose an operating TSR for your Vawt and then run the numbers to setup the entire Vawt. This appears to be the way it's done in most of the research tha...
Here is my latest creation, i have been working on this for the last 9 month. ... ... 2 types: ... Reverse and Forward. ... please refer to them as the "Column R" or "Column F" ... ... The Idea was created, designed and
... GoVertical, what you are proposing sounds kind of similar to DerekSoftStuff's system. What it lacked, and yours lacks is a way to vary the load on the turbine so you can get a real power curve. ... ... I do have a solution. My MPPT controller...
... Peter's words: ... ... The smaller VAWT on top was attached to a flex shaft and used to drill holes in wood. It was hand-held. Three foot diameter and 18" blade span, 3" chord. It had stronger torque than expected at a TSR of around...
Peter Sharp emailed me some photos of his first prototypes. I scaled the images so they would fit better on the forum. Some were originally larger and some smaller. If anyone needs the originals let me know. ... ... I'm going to post each in a ...
Guys, ... I have been reading here abou tsolidity of the rotor on a VAWT. ... ... The chord of my airfoil is 8" x 3 of = 24" ... ... The diameter of the rotor is 54" x 3.14 = 170" circ. ... ... 24" * 170 = .14 or 14% .....
It's not good that we have two definitions for the word solidity. It appears that PASVAWT's definition is correct, at least according to those few definitions I can find on the net. It's blade area / turbine area WHEN VIEWED FROM THE FRONT. (The ...
Hello ... Electrondady suggested the bearing at the bottom of my experimental VAWT might have excess friction. ... ... So I made a bushing to fit between the Vawt axis and the motor shaft of an old AMTEK motor. ... ... This particular motor had bro...
My first VAWT has been completed, and I am looking to build another. So now I need some ideas. ... ... I am planning on making a series of very small VAWTS (about 2' high and 2' in diameter). Then I will test each one in a controlled environment, a...
Hello Folks, ... This is fantastic. A forum dedicated to VAWT. ... Thank you!! ... ... I have been experimenting with VAWTS in some form or another for a few years. ... ... In the last 2 years I was able to acquire a lathe and a mill drill. ... N...
So I've been working on my first turbine. Very simple design to get my foot in the door. Simple drag Savonius, posted a short video on youtube, link below. Can anyone give some suggestions on a generator type that'll couple with this, but yet simp...
