I know this thread is kind of old but...... what distance would the " sets " need to be on a multi coil generator ? in short rotor plate coil plate rotor plate...
2612
Steve Spence
sspence65
Dec 3, 2009 10:47 pm
Experimentation will have to do. I have not seen a multi set unit. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org ...
2613
Tim
casey51234
Dec 4, 2009 10:06 pm
RD- If you position the magnets so that N on one side lines up with S on the other, you don't need two plates. If you want to build with two magnet plates at...
2614
Eo
eo.lien
Dec 4, 2009 10:44 pm
hi, you'll find at this adress a french doc. for general college challenge and you'll find at the 4st page a photo of a 1.2kw multistage gen. with an...
2615
Charlie
charlieknox
Dec 10, 2009 2:23 pm
Hi Folks - I'm interested in your experiences with wind speed/direction monitoring equipment - what's good, what's not, durability, support, etc. Thanks for...
2616
purplerainbowray
purplerainbo...
Dec 11, 2009 2:41 pm
i have been making a little pma....with some wires i found around...creates 4 volts of dc power and 7 of ac....if i had an other rotor it is true that the...
2617
kensmith52
Dec 13, 2009 9:58 pm
HI all, Just joined this group today and was looking over some of the projects going on here. I am interesting in a Vertical wind turbine but looks as though I...
2618
jerry freedomev
freedomev
Dec 14, 2009 3:06 am
Hi Ken and All, The reason you find no VAWT here is they are not eff thus cost 4-8 times more/kwhr of electric production. They are only useful in very low...
2619
Neil Dennis
wombat_eagle
Dec 14, 2009 3:07 am
Do a "google" on "lenz turbines", you may find something there. wombat...
2620
kensmith52
Dec 14, 2009 2:03 pm
Thanks Jerry and Neil for the information. I did not know that you needed 4 to 8x the size for the Vertical. This is something I need to look at then. I found...
2621
chazsql
Dec 16, 2009 12:59 am
OK, time to show my ignorance. I'm building a small 12v turbine just to go through the whole process before building a big one. I want to get most of my...
2622
Steve Spence
sspence65
Dec 16, 2009 1:04 am
35 turns per coil for 9 coils. For 6 coils (2 coils per phase), you would need about 53 turns. Why the saw blades? There's no metal in the stator. Steve Spence...
2623
Charles Evans
chazsql
Dec 16, 2009 1:10 am
They were handy. I have a ton in my shed from building my house! I throw "nothing" away! Would it help if I doubled the saw blades? _____ From:...
2624
Steve Spence
sspence65
Dec 16, 2009 1:13 am
No, you are making it worse. Do not add metal to the stator. All you are creating is cogging. Steve Spence Renewable energy and self sufficiency ...
2625
Charles Evans
chazsql
Dec 16, 2009 1:21 am
OK. Steve, when you say I have no metal, in the stator, do you mean I don't have enough? The magnets stick to the disks. I know there's not as much metal as...
2626
Steve Spence
sspence65
Dec 16, 2009 1:23 am
You should have no metal in the stator, except the coils. No saw blades or anything else. The magnets are on the rotor, which is usually a 12" 1/4" steel...
2627
Charles Evans
chazsql
Dec 16, 2009 1:29 am
Steve.. I apologize. I've been on the PC all day reading on the AF Please, insert rotor, in place of stator, in regards to the saw blades. My mind is turned...
2628
Steve Spence
sspence65
Dec 16, 2009 1:36 am
Ah, that's a horse of a different color. No worries. I have not tried a rotor made of saw blades. Going to need a bunch of them .... Steve Spence Renewable...
2629
Charles Evans
chazsql
Dec 16, 2009 1:38 am
Steve, you answered my question in your first response. Sorry about my gaff. Thanks. _____ From: axialflux@yahoogroups.com [mailto:axialflux@yahoogroups.com]...
2630
Charles Evans
chazsql
Dec 16, 2009 2:09 am
By the way, I have used a furling system, with pipes, on another small turbine I made from a ceiling fan. No welding. ...
2631
Shanan Reynaud
shannrenn
Dec 16, 2009 2:14 am
If it's a bandsaw blade it could be handy for strapping the circumference of your magnets. Regards On 16/12/2009, at 12:36 PM, Steve Spence...
2632
Neil Dennis
wombat_eagle
Dec 16, 2009 2:42 am
Question, I made up a rotor with kinda low strength magnets using a piece of steel about .030" thick, output was not great when I tested on my drill press....
2633
Shanan Reynaud
shannrenn
Dec 16, 2009 2:43 am
Hi group, I recently aquired two rotors from a VERY old ac generator. They are about 30 cm in diameter, mild steel backing, with the biggest ring magnets you...
2634
Charles Evans
chazsql
Dec 16, 2009 2:46 am
No, Steve, I have a few dozen of old, dull 7.25" circular saw blades, from building projects. Which brings the question, is the volume/weight of the steel...
2635
Steve Spence
sspence65
Dec 16, 2009 2:53 am
It's a combination of magnet strength and flux lines. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org ...
2636
JP
dbsleder
Dec 16, 2009 3:47 am
No, No, he's talking about circular saw blades from a skil saw or a table saw, or larger a radial arm saw, to mount his magnets to. at least that's my...
2637
qazxcvb21
Dec 17, 2009 1:31 am
I haven't been on for a while but I did find this question interesting... The metal backing the magnets serves as a conduit for the flux lines, helping direct...
2638
chazsql
Dec 18, 2009 1:17 pm
Another question is called for. Can the rectifier, from a car alternator, be used to rectify from AC to DC?...
2639
Steve Spence
sspence65
Dec 18, 2009 1:24 pm
yes, however we have a 3 phase 100 amp rectifier built for this application for $35 at http://www.green-trust.org/products/ Steve Spence Renewable energy and...
2640
Kirk McLoren
kirkmcloren
Dec 18, 2009 9:24 pm
why dont you use synchronous detection and save a bunch of watts? Beefy FETs are cheap these days Kirk ... From: Steve Spence <sspence@...> ...
