Hi, This is about "Tower Height and Location" problems in related to Small wind Turbine. I had personally experienced difficult time due to practical problems...
171
michael_98_99_2000
michael_98_9...
Nov 17, 2006 1:38 pm
Hey everyone: I'm a mechanical engineering student at Virginia Tech working on a wind turbine for my senior design project. I have been looking at the "wind...
172
Steve Spence
sspence65
Nov 17, 2006 3:21 pm
the bearings are wrapped with electrical tape for a interference fit. there are washers and nuts bolting the threaded rod to the inside race. Steve Spence ...
173
Michael Kacmarcik
michael_98_9...
Nov 17, 2006 6:15 pm
Oh ok, so instead of finding a way to attach the rod to the inside diameter of the bearing, a washer is pressed firmly on top of the inside race by a nut. I...
174
James Washer
kg7hh
Nov 20, 2006 1:05 pm
The charts I see on the power and voltage output from axial flux generator shows quite a bit of voltage variance with respect to shaft speed. This leaves me...
175
Rich
rainbird997
Nov 20, 2006 5:10 pm
Hello all, I've been reading, planning and dreaming, off and on now, for a couple of decades about getting off-grid, and building a quiet little homestead-y...
176
Dan Fink
danbob88
Nov 20, 2006 6:51 pm
These power curves went up recently on our discussion board, http://www.fieldlines.com/ and we thought they would be of interest here. We tested the...
177
Dan Fink
danbob88
Nov 20, 2006 7:23 pm
Hi Jim -- Voltage and RPM output have a linear relationship with these alternators. Double the RPM, and you've doubled the voltage. What varies with RPM is the...
178
James Washer
kg7hh
Nov 20, 2006 11:24 pm
Ok... that (mostly) makes sense (to me)... so, here's a followup question. Wouldn't one want to design the generator to be somewhat compatible with the battery...
179
The Real Seed Catalogue
seeds@...
Nov 20, 2006 11:38 pm
Hi Jim, the simplest approach is to feed the output directly to your batteries. They can then absorb whatever is available. A seperate circuit connected to...
180
Steve Spence
sspence65
Nov 21, 2006 2:36 am
the windings are different for each pack voltage. I highly recommend reading the back issues of essn magazine (http://www.rebelwolf.com) and back home ...
181
easyfly51
Nov 21, 2006 4:44 pm
... Hello Again I will try to post again. And my first post. Looking at #27 is the inside pipe put on a lathe at all. I am still don't understand this how it...
182
Steve Spence
sspence65
Nov 21, 2006 9:19 pm
no lathe work, no heavy tools. there is a pipe inside that just sets the gap between the bearing shells. they are wrapped with electrical tape to make a tight...
183
easyfly51
Nov 22, 2006 12:00 am
Hello Steve Been looking over pictures and think I am getting the bearing part. It looks like 1.5" dia pipe. Question when you say the tail furls does it do...
184
Steve Spence
sspence65
Nov 22, 2006 1:27 am
wind speed pushes the tail uphill, gravity pulls it backdown, which rotates the blades out of the wind. Steve Spence Director, Green-Trust ...
185
James Washer
kg7hh
Nov 22, 2006 1:38 am
I'm confused by this whole "tail furling" thing to.. how does that work On Tue, 21 Nov 2006 23:13:11 -0000...
186
James Washer
kg7hh
Nov 22, 2006 2:41 am
so... when the tail goes up... do the main blades just turn such that the ends of the rotor are in line with the wind. Why wouldn't it just rotate down wind...
187
David G. LeVine
sirdave144
Nov 22, 2006 3:32 am
One simple controller is: [] As the windmill comes up to speed, the current starts to flow through the coil and diode to the batteries. When battery voltage...
188
Tobias Gogolin
usertogo
Nov 22, 2006 7:54 am
yes two things I don't see why to short and try to stall the mill, that might wear down the magnets quicker than necessary there is usually some kind of...
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Dan Fink
danbob88
Nov 22, 2006 3:40 pm
Hi Jim =-- As Steve said, that's correct, the stator is wound differently for different system battery bank voltages. It's easy to figure out--if you have an...
190
Dan Bartmann
buckvillian
Nov 22, 2006 4:56 pm
Looking at the 'wind class' pictures... I can't understand how the tail of the machine in the pictures helps it furl. I don't see how this machine can furl....
191
easyfly51
Nov 22, 2006 6:14 pm
Does anyone know how too get steel magnet plates like this or where. And is there a parts list somewhere I think this could help first timers. I have the...
192
easyfly51
Nov 22, 2006 7:05 pm
Steve How does one find magnet plates like this and is there some type of parts list somewhere. I got the magnets in last night. Thks Wayne ... rotates ... On...
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Steve Spence
sspence65
Nov 22, 2006 7:26 pm
You may be able to get the plates from Jim at woodhenge.org. That's where I got mine. This is a moveable tail, it's not fixed. It's designed to move out at...
194
Steve Spence
sspence65
Nov 22, 2006 7:27 pm
you can get parts and a parts list from Jim Juczak at http://www.woodhenge.org (jsjuczak@...) Steve Spence Director, Green-Trust ...
195
Steve Spence
sspence65
Nov 22, 2006 10:25 pm
wear down the magnets? you stall the mill when working on it, or when raising and lowering the tower. semiconductors are usually more reliable than relays. ...
196
Steve Spence
sspence65
Nov 23, 2006 12:41 am
the tail would be so far offline at that point there would be no resistance to the wind to push against (tail and wind would be parallel to wind flow), but...
197
Tobias Gogolin
usertogo
Nov 23, 2006 12:12 pm
you don't think magnets wear => loose a percentage of their strength? it wont make a difference to do it on special occasions like you mention... Maybe the...
198
David G. LeVine
sirdave144
Nov 23, 2006 12:22 pm
... Hmmm... I assume that you have seen magnets wear down. I never have. ... Why bother unless the load needs to dissipate energy. Magnetic brakes have been...
199
kacmarci@...
michael_98_9...
Nov 23, 2006 12:28 pm
Just curious what people thought of this one. I just finished carving some wind turbine blades and was going to treat them with several coats of deck ...
