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Author Topic: Dia. Mag. Alternator  (Read 190912 times)

Mk1

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Re: Dia. Mag. Alternator
« Reply #105 on: November 08, 2010, 07:54:56 AM »
@zmonkie

Great work , you will need more rpm , is it hard to move ?

I also got a idea ... look at this ...

Mark

z.monkey

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Re: Dia. Mag. Alternator
« Reply #106 on: November 09, 2010, 03:05:02 AM »
is it hard to move ?
No, it motors a little because of the winding slots, but otherwise only takes in/oz to move it.  you can spin it with your fingers...   A 40 pound magnet...  Got other problems already.  Continuous spin control on this mutha-forker...

I got the gear set, and its a little fat.  LOL!  Spin control!  looks like I've got a whole 'nuther machine process to play with now...

Take a look-see...

Too tired to deal with it now...

Mk1

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Re: Dia. Mag. Alternator
« Reply #107 on: November 09, 2010, 09:09:45 AM »
@zmonkey

You did get why i posted a microwave fan , but i will spell it out for everyone.

It has a coil , core and a shaft with bearings , all you need is to replace the aluminum rotor with a magnet , for a cheep and easy way to make one or many since the shaft could be extended to work on many cores.

Mark

z.monkey

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Re: Dia. Mag. Alternator
« Reply #108 on: November 09, 2010, 11:38:42 AM »
Sorry Mark,
I was fixated on my current problem.  Yes that looks like a shaded pole AC motor.  It could possibly work as a DiaMag alternator if you replace the rotor (which is probably a permanent magnet anyway) with a big neo-dia-mag.  So where did you find it, and ho much does it cost?

Mk1

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Re: Dia. Mag. Alternator
« Reply #109 on: November 09, 2010, 12:13:41 PM »
@zmonkey

Hi , its a microwave fan , can be found free of charge in the trash , pretty standard .

The coil is pretty nice , and like i said the rotor is usually aluminum , induction fan ...

Keep the great work , i know you will figure it out ...

Mark

z.monkey

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Re: Dia. Mag. Alternator
« Reply #110 on: November 09, 2010, 12:29:08 PM »
Can you measure the shaft diameter, and the rotor diameter?  If I have those dimensions I can probably pick parts out of a catalog that would drop in.  Then all you have to do is replace the parts and spin the shaft.  That is a lot easier than what I have done here...

I love salvage parts...

Edit:  That rotor may already be a neo dia mag, so it may not even need replacing...

z.monkey

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Re: Dia. Mag. Alternator
« Reply #111 on: November 10, 2010, 03:20:30 AM »
Look, the gears got a face lift...

Thin is sexy...

nievesoliveras

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Re: Dia. Mag. Alternator
« Reply #112 on: November 10, 2010, 03:32:48 AM »
That reminds me a swimsuit beauty contest!

Jesus

z.monkey

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Re: Dia. Mag. Alternator
« Reply #113 on: November 10, 2010, 03:46:32 AM »
That reminds me a swimsuit beauty contest!

Jesus
Uh, I have to take, uh, her, apart again...

I hope you don't mind...

z.monkey

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Re: Dia. Mag. Alternator
« Reply #114 on: November 10, 2010, 01:17:46 PM »
I did another electrical test this morning...

Open circuit voltage is 17.34 Volts.

Loaded with the 65 ohm resistor it drops to 5.84 Volts.

Which gives a current of 90 milliAmps.

And that is about half a Watt...

The gears work great, they are the least of my worries...

http://www.youtube.com/watch?v=YT-4j-L4QXw

The poor electrical performance is because of the wire I chose.  I measured the resistance of the coils, 25 ohms !?!?  No wonder there is no current.  This is probably the most fundamental thing I screwed up trying to be cheap.  I have this old spool of 22 AWG magnet wire, and figured its no cost, gotta use it.  I'll go for high voltage.  Not thinking that the big resistance would turn my alternator into a fancy, spinning choke.  So, you can guess what's next.  Rewind...

Gotta take it all the way apart again...

This time I'm thinking about using 16 AWG magnet wire...

Edit: Forgot to mention that I weighed it this morning, 8 1/3 pounds...

b_rads

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Re: Dia. Mag. Alternator
« Reply #115 on: November 10, 2010, 04:45:10 PM »
Z.Monkey
This project of yours is developing into a work of art.  With your permission, I would like to save a copy of your last pictures for wallpaper on my personal computer.  The rework on the gears is awesome.  Bummer about the coils!  You truly are Tenacious.   
Brad S

z.monkey

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Re: Dia. Mag. Alternator
« Reply #116 on: November 10, 2010, 06:15:30 PM »
work of art.
LOL!  My artistic medium is steel, copper, and aluminum seasoned with physics...
You can use the pictures if you want.  Already got a plan for the coils...

z.monkey

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Re: Dia. Mag. Alternator
« Reply #117 on: November 11, 2010, 04:19:04 PM »
I got the new wire on order today.  Its an industrial grade 14 AWG magnet wire, here are the specs...

http://www.belden.com/techdatas/english/8073.pdf

Looks like I'll be doing the unwind / rewind thing soon.

Then we make power...

z.monkey

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Re: Dia. Mag. Alternator
« Reply #118 on: November 13, 2010, 01:14:26 PM »
I got busy taking apart the alternator on Friday night.  All the hardware came off nice.  The coils decided that they were an immovable object.  I did put these coils together with marine epoxy, so I didn't figure that they would be easy to take apart...

I got 9claw and Samurai to provide some muscle, and together we applied the unstoppable force.  It took a few hours to liberate the immovable object.  The core is steel, so I wasn't too worried about applying the Blacksmith Hammer and a sharp chisel to liberate the immovable object...

The last picture is the bits left over...
« Last Edit: November 13, 2010, 07:51:34 PM by z.monkey »

z.monkey

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Re: Dia. Mag. Alternator
« Reply #119 on: November 15, 2010, 02:12:57 PM »
I've got a new way to apply the keepers this time.  I want to make the coils a little more narrow, so there are no problems with the hardware or tools used on the hardware.  The keepers will come off with the winding jig this time.  The coil will be epoxy filled, same as last time.  The larger wire should produce more uniform windings.  Also didn't add anything between the wire and the core this time.  I used a couple winds of electrical tape last time.  This wire is heavily armored, do there is no need for the intermediate material.

Ready to rewind...