Materials from afar

[madman]

   I want to put together a wind generator system together using mostly things I can find locally.  Sounds easy enough, right.  Well the catch is I'm trying to do it in a remote region of Mongolia.  My aim is to make something that could be reproduced by locals and cheap enough that herders could afford it.  To start me off though I think I'm going to need to get a few things from other places.  I haven't found a good outlet for magnets or magnet wire in the entire country, or even seen any good epoxies or resins.  If anyone reading this happens to know of places in China or Eastern Russia where I could get these and other such materials please let me know.  

   Is there any info on a conversion of a Chinese induction motor or some such part that can be easily found in China or Russia?  I've been looking around the local Russian car parts market in order to find a housing for PMG, but haven't found much that has potential yet.  I'm open to any advice or wisdom that I can get.

Thanks for having a site like this one,

Mark

[stevesteve]

... and I thought I was finding it hard finding suitable bearings just north of London.

Magnets by mail order? Lada hubs?

[electrondady1]

china is your best bet. they consumed more copper than anyone last year. and they are the major manufactuer of ceramic magnets.

[kitno455]

no, dont convert anything, require too many tools. find a way to use bicycle parts and auto alternators and leather drive belts. i saw a guy that did this in nepal using local flour grinding aparatus to gen power.

allan

[n3rd]

what u experience is the the same way i undergo here, i live at indonesia at south eastern region. here i can find various alternators, but getting neo magnets to fit inside (replacing the field coil) is the challenging side due to scalable size to produce magnetic flux. or should i turn back to 2 hp induction motor (water pump) and cutting slots to fit hard drive neo magnets. to the date, i hvn't built any, couldn't wait any longer to build one. mechanical skill haunts me to build it.

[Texas Al]

BTW, what are you going to use for batteries?

[ghurd]

A supply of 24v PM bus or truck motors may be worth a try?

I can get 5 to 8 volts from many 12v PM automotive motors.

The rated RPM must be low. The lower the better.

G-

[Texas Al]

Yeah, in principle isn't it true that if you pile up enough automotive batteries, it won't matter that they're not deep-cycle because none of them will be getting deep-cycled individually? The key would be getting a vast excess of batteries to the typical power draw, wouldn't it?

[n3rd]

what else modification u hv made to derive such 5 upto 8 volts?

is it wind driven?

[ghurd]

No modifications.

A diode will be needed to stop the battery from running it as a motor.

They were connected to a drill.

They could have been wind driven,

but I need 12 volts, they did not

make 12V so thats where it stopped.

A 24 volt motor may make 12V,

but I have not found any to try.

G-

[n3rd]

talking about electric drill, i once disassembled only to see the inner mechanism.

its armature had multi-segments commutator which got current from brush contact.

Later on when i reassembled, it turned out the drill rotates slower than it ought to be.

and the stator went hot due to eddy current. i'm so frustrated hence i reopenned the case n tried to locate the problem. only the brush losed the contact gap.

when i had adjusted the contact, somehow it ran smoothly.

is it the major cause? or in other words, simply disconnect the brush contact will heaten the stator,rite? correct me if wrong.

[ghurd]

My quick thought, the heat in the stator was from excessive current.

Low speed and misaligned coil flux.

Like it was fighting itself.

But thats probably not correct.

G-