I'm hoping to build a grid tied, 48v, 10' to 14' dia., Hugh Piggott wind turbine for use in Kansas where the wind average speed is around 12 mph. I can't seem...
3206
Steve Spence
sspence65
May 9, 2011 3:56 pm
Just $10 this week, to celebrate Mothers Day. http://www.green-trust.org/wordpress/2011/05/09/ebook-sale-up-to-75-off/ Solar, Water, and other ebooks also on...
3207
towerace123
May 14, 2011 1:38 am
hello tom my name is tracy somehow you find a way to squeeze free energy out of self reliance and make your claim. your choice but you lied . in fact tom...
3208
George
warship33331
May 14, 2011 12:13 pm
I have a set of plans for a stator that calls for 8 coils (100 turns) of 12 ga wire, But they only list it as needing 3000 grams of wire. How long is that?...
3209
daniel.bromley@...
dynodanb
May 14, 2011 12:14 pm
Tom, Tracey... ease up guys!! Having read the thread, as an observer I can see that this rant is a simple misunderstanding on BOTH parts! You Both need to...
3210
Steve Spence
sspence65
May 14, 2011 12:33 pm
3000 grams is about 670' 3000 grams = 6.6138679 pounds 100' of 12g copper weighs 0.986 pounds On Sat, 14 May 2011 01:51:40 -0400, George...
3211
DALE KING
scrolls601
May 14, 2011 11:52 pm
AWG 12 ga wire is 50.59 ft/ lb. you have 3000/454 = 6.6 lb of copper therefore L = 5.59 x 6.6 = 334 ft AWG 12 ga. wire . Alternatively, if you know the...
3212
towerace123
May 15, 2011 12:27 pm
i agree i just dont think troll was a needed coment i like group myself and read it as often as i can...
3213
waterleat2000
May 15, 2011 5:12 pm
Seams like there is a difference here of a factor of 2! Without checking any values I will throw into the mix one needs to be careful of the different wire...
3214
Steve Spence
sspence65
May 15, 2011 5:18 pm
Various sites have differing lengths for a pound of copper. Go by what your supplier posts as the ft / lb for their wire. enamel adds a few ounces per foot....
3215
Steve Spence
sspence65
May 15, 2011 5:36 pm
I recommend this source, but I do not get any payment for doing so: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=310317796083#vi-content -- Steve Spence ...
3216
BUTCHK
kuhnbutch
May 17, 2011 1:32 am
I ran across this 2009 video of a commercial axialflux design. http://www.engineeringtv.com/video/Axial-Flux-Technology-for-Wind;Engineering-TV-Energy-Videos ...
3217
m_eisenman
May 17, 2011 10:18 pm
A well-build axial flux alternator - can be easily spun by hand and will generate ueable power at much lower rpms than an automotive alternator....
3218
m_eisenman
May 17, 2011 10:18 pm
3000 g is 3kg - I think 2.54 lbs are in a 1kg kg per lb - so it's quite a bit of wire (about 7.6 lbs) If your wire is like anyone elses it will tell you how...
3220
Dan Fink
danbob88
May 19, 2011 2:00 am
AND -- you don't have to waste 40-60 watts (almost half what the average human can produce pedaling) on energizing the electromagnets of a car alternator! -- ...
3221
Henry
hdavis30318
May 23, 2011 8:24 pm
That depends an awful lot on what counts as "useable" power. Henry Davis...
3222
Steve Spence
sspence65
May 23, 2011 8:27 pm
Not really. Compared to a inefficient car alternator, the axial flux will deliver more usable power. The car alternator will rob 50% or more of the 70 to 150...
3223
ecomm@...
invaders_fro...
May 24, 2011 1:08 am
There are conversions available for GM (and possibly others) alternators to permanent magnets, but they are probably still more optimised for higher RPMs. -Ben...
3224
jasontraviswitt
May 26, 2011 10:12 am
Hi, i'm building my first wind turbine and was wondering about how to do the correct spacing between the two magnet rotors & the stator? I have read to try to...
3225
Steve Spence
sspence65
May 26, 2011 10:27 am
as close as you can get without them touching. the closer they are, the more power you make. On Thu, 26 May 2011 02:07:23 -0400, jasontraviswitt ... -- Steve...
3226
jasontraviswitt
May 26, 2011 10:23 pm
thanks steve for you help, also should i use a metal spacer or something between the stator and rotors or should i just align everything without a spacer? ...
3227
Steve Spence
sspence65
May 27, 2011 12:04 am
I used a set of double nuts on the shaft to hold the rotors in position, and external adjustable supports to position the stator. You can see this in our pics...
3228
Gentlehorse
lookingbears
May 29, 2011 4:30 pm
Hi have 2 questions; does the tape wrappings around the coils reduce the electricity produces by the stator? Question 2 is the same except when you cover the...
3229
Steve Spence
sspence65
May 29, 2011 4:37 pm
resin and tape are not magnetic, so they do not impede the magnetic flux. there is no appreciable effect on power. On Sun, 29 May 2011 11:29:12 -0400,...
3230
James Morris
james-morris...
May 29, 2011 8:08 pm
In any generator, any permanently non-magnetic substance will have zero effect on the amount of electricity produced in a coil. But there is a second...
3231
jasontraviswitt
May 30, 2011 12:08 am
I made a coil winder out of some metal t's i bought at lowe's. I used a drum stick as the shaft and i am using 1/2 metal spacers. Now i realize that i...
3232
Steve Spence
sspence65
May 30, 2011 12:30 am
I use wood for that reason. plastic could also work if no sharp edges. nylon is nice and soft. On Sun, 29 May 2011 18:00:37 -0400, jasontraviswitt ... -- Steve...
3233
Gentlehorse
lookingbears
May 30, 2011 11:51 am
How hot does it get between the magnets and coils? It would seem like the air passing through would cool the coils. If you had room couldn't you drill holes...
3234
Steve Spence
sspence65
May 30, 2011 12:34 pm
Heat depends on current flow. Cooling holes could work, as long as you don't nick a wire. The coil pack doesn't rotate, so there won't be much flow. Angles...
3235
Drew Baden
drew4justice
May 30, 2011 8:41 pm
In effort to assist cooling, Dan Lenox eliminated material from the core in his stator to allow air to pass and did a beautiful job, seen here: ...
