Induction motor

[Perry8]

Greetings Group,

This is my first posting and my first attempt at wind power.  I have a motor out of a Delta bench sander.    http://www.amazon.com/Delta-SM500-Shopmaster-4-Inch-Benchtop/dp/B000FJ9I40/sr=1-15/qid=1164748699/re



f=sr_1_15/104-5457061-0392767?ie=UTF8&s=hi    It's 5.2 amp.  I took the armiture out and it's 2 and 3/8ths" in diamiter.  I was looking at the magnets in the Products secton and am not sure what to get.  I have a 7x14" lathe to cut a groove with.  Some advice would be helpfull.  I would also like a recomended span.  I'm figuring about 5 feet.  I plan to build a alternator from scratch on the next one.  This unit is to learn with.

Thanks in advance,

Perry

[ghurd]

I believe we will need to know much more about the motor...

Everything it says on the motor sticker is a good start.

It is far too early to choose a blade size.

G-

[coldspot]

P8-

Start with the search button to the right in the first box, (google search works much better but either search will save you money).

Search: Induction conversion, zubbly, (The MAN

when it comes to these!!!!!!!! )

If the bench grinder was 120 VAC, put it back together and save as a what it was.

If it's 3 PH, then it's a start.

With your lathe, a groove isn't needed.

What you do is cut down the arm the thickness of the magnets to be used and a bit extra for glue.

In my diary I have done a few, (best would be gould century 2 HP 3 PH).

Good luck

[Perry8]

Ok.  It's acualy 4 amp and 1 phase.  The purpose would be to charge a deep cycle marine battery during an exteded power outage to keep my medical gear running.

Perry

[Perry8]

Well it's a single phase but it's not doing anything but sittin on the shelf.  I thought I'd use it to practice on.  For a bigger unit I plan to build the alternator from scratch.

Perry

[ghurd]

A 4A 1-ph?  What are the RPMs of the motor, volts, AC/DC?

A vacumme sweeper motor is not the same as a fan motor.

[Perry8]

Thanks for the reply,

AC, 120volts, 3450rpm, 60herts, 1/3hp.  There are 48 slots in the stator.  This is a project to see if I want to build a bigger one.  What I need to know is what magnet shape, polarity, quanity and glue pattern if one is nessasry for this small unit.  Thanks,

Perry

[andyman5002]

Hi Perry and welcome,

I did the same thing you are planning on doing. I started with a small single phase motor, and now im working on/finished a 3HP 3phase beast. I was very disappointed with my first conversion, do not expect great results with it. I think mine came to under 20W. It will give you ideas and teach you things but if your looking for some performance get a 3phase. Check out my diary, i think its got a bit of both attempts in there.

So I would try hunting for a 3 phase, but if you want to mess around and learn go for it. I don't think its going to be very good though in output terms. Read everything zubly has written you learn a lot.

Have Fun

Andy

[Perry8]

Thanks Andy.

I think I will try to find a 3 phase motor.

Perry

[ghurd]

I can't tell you about rewinding.

It is not the best motor to start with if the intent is to use the factory coils. Lower speed motors are better. 1750RPM is a common motor. 1150 and 850RPM are better, but I don't find them as often.

As it is, your motor is a 2 pole. It needs 2 magnets, or 2 sets of magnets. One pole North up, the other pole South up.

Lower speed motors use more magnet poles. 1750 gets 4 sets of magnets, N-S-N-S. 1150 gets 6. 850 gets 8.

A quick read through Zubbly's #1, 2, and 3 will help. Most of it didn't mean much to me until after I tried doing the first one.

Me? I would do it. Good unit "to learn with".  Maybe 2 neo magnets, around 3/4" wide, 1/4" thick, about as long as the iron area of the armature. Turn it down, epoxy the magnets on... see what happens.  A good way to find some problems you may see later. Be careful not to cut past the aluminum on the armature, or it will fall apart.

Cheap fun.

G-