BFM, Maybe Gen.

W

Watson A.Name

Guest
I scrounged this big F'ing motor out of the trash bin, looks like it
was a drive motor for a big copier or old mainframe reel to reel tape
drive. It has a grooved belt pulley on one end of the shaft, maybe
1.5" in diameter. The other end of the shaft has a big flywheel,
maybe 7 or 8" inches weighing several pounds and the whole motor
weighs maybe 30 pounds (13kg). Says 3560 RPM or something like that.
The end with the pulley has what looks like a tachometer on it. I
left it in my truck, since it's big (more like long and only 4" in
diameter) and heavy.

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some big
heavy stationary equipment. After all, one can get different speeds
from an AC motor. Maybe it has to be continuously variable speed. In
any case, my thoughts were that it would make a great generator if it
has permanent magnets in it. I haven't had a chance to check it out,
or put a meter on it to see if it generates. That'll come later.
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm just
wondering if anyone has worked with something like this, and if it
will make a decent generator.
 
Any brushed DC motor can be used as a generator. If you want a DC
generator, this motor will do the job. I would recommend checking the
condition of the brushes and commutator.

BRW

On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson A.Name)
wrote:

I scrounged this big F'ing motor out of the trash bin, looks like it
was a drive motor for a big copier or old mainframe reel to reel tape
drive. It has a grooved belt pulley on one end of the shaft, maybe
1.5" in diameter. The other end of the shaft has a big flywheel,
maybe 7 or 8" inches weighing several pounds and the whole motor
weighs maybe 30 pounds (13kg). Says 3560 RPM or something like that.
The end with the pulley has what looks like a tachometer on it. I
left it in my truck, since it's big (more like long and only 4" in
diameter) and heavy.

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some big
heavy stationary equipment. After all, one can get different speeds
from an AC motor. Maybe it has to be continuously variable speed. In
any case, my thoughts were that it would make a great generator if it
has permanent magnets in it. I haven't had a chance to check it out,
or put a meter on it to see if it generates. That'll come later.
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm just
wondering if anyone has worked with something like this, and if it
will make a decent generator.
Click to expand...
 
Watson A.Name wrote:

I scrounged this big F'ing motor out of the trash bin, looks like it
was a drive motor for a big copier or old mainframe reel to reel tape
drive. It has a grooved belt pulley on one end of the shaft, maybe
1.5" in diameter. The other end of the shaft has a big flywheel,
maybe 7 or 8" inches weighing several pounds and the whole motor
weighs maybe 30 pounds (13kg). Says 3560 RPM or something like that.
The end with the pulley has what looks like a tachometer on it. I
left it in my truck, since it's big (more like long and only 4" in
diameter) and heavy.

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some big
heavy stationary equipment. After all, one can get different speeds
from an AC motor. Maybe it has to be continuously variable speed. In
any case, my thoughts were that it would make a great generator if it
has permanent magnets in it. I haven't had a chance to check it out,
or put a meter on it to see if it generates. That'll come later.
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm just
wondering if anyone has worked with something like this, and if it
will make a decent generator.
Click to expand...
Easy variable-speed control of AC motors has only come recently, and
there are still a lot of brushed DC motors sold because of their ease of
use.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
 
In article <otrjj094ea6es3qp4rsqa59f6qhggmhaaf@4ax.com>, Bennet Williams
<> says...
On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson A.Name)
wrote:

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some big
heavy stationary equipment. After all, one can get different speeds
from an AC motor. Maybe it has to be continuously variable speed. In
any case, my thoughts were that it would make a great generator if it
has permanent magnets in it. I haven't had a chance to check it out,
or put a meter on it to see if it generates. That'll come later.
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm just
wondering if anyone has worked with something like this, and if it
will make a decent generator.


Any brushed DC motor can be used as a generator. If you want a DC
generator, this motor will do the job. I would recommend checking the
condition of the brushes and commutator.
Well, yes, but some are easier than others. A series wound motor could
Click to expand...
be used as a generator but driving the field could be interesting.

How may terminals does it have? (and if more than 2 are the the same
size?)

Given the description I doubt that it's series wound but it might be
shunt wound.

Robert
 
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:IAv_c.143505$pTn.97721@news01.bloor.is.net.cable.rogers.com...
In article <otrjj094ea6es3qp4rsqa59f6qhggmhaaf@4ax.com>, Bennet
Williams
says...
On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson
A.Name)
wrote:

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some
big
heavy stationary equipment. After all, one can get different
speeds
from an AC motor. Maybe it has to be continuously variable speed.
In
any case, my thoughts were that it would make a great generator if
it
has permanent magnets in it. I haven't had a chance to check it
out,
or put a meter on it to see if it generates. That'll come later.
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm
just
wondering if anyone has worked with something like this, and if it
will make a decent generator.


Any brushed DC motor can be used as a generator. If you want a DC
generator, this motor will do the job. I would recommend checking
the
condition of the brushes and commutator.
Well, yes, but some are easier than others. A series wound motor
could
be used as a generator but driving the field could be interesting.

How may terminals does it have? (and if more than 2 are the the same
size?)
Click to expand...
It has two heavy (16ga?) wires, a red and a black.

Given the description I doubt that it's series wound but it might be
shunt wound.
Click to expand...
What? Series? Shunt? A permanent magnet motor has only one winding!

> Robert
 
In article <10joqh3jc61v30c@corp.supernews.com>, "Watson A.Name - \"Watt
Sun, the Dark Remover\"" <NOSPAM@dslextreme.com> says...
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:IAv_c.143505$pTn.97721@news01.bloor.is.net.cable.rogers.com...
On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson
A.Name)
wrote:

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that. I
have no idea why it has to be DC, since it's obviously from some
big
heavy stationary equipment.
snip

How may terminals does it have? (and if more than 2 are the the same
size?)

It has two heavy (16ga?) wires, a red and a black.

Given the description I doubt that it's series wound but it might be
shunt wound.

What? Series? Shunt? A permanent magnet motor has only one winding!
Well, you didn't mention that you already knew it was a PM motor :). A
Click to expand...
two terminal motor could be either PM or series wound. Given the voltage
and current rating, and the fact that the leads are different colours I
would strongly suspect PM.

A series wound motor with 2 terminals is commonly used for pump motors
(the field is wired to the armature internally eliminating 2 of the usual
terminals from what would atherwise be a four terminal motor, brushed DC
motors come in variations from two terminals to six terminals at least).
They have the advantage of not needed extra jumper wiring and they cannot
be hooked up backwards. No matter which polarity you hook the 2 terminals
up in the motor always rotates in the same direction.

And to be picky a PM motor has multiple windings, that's what the
commutator and brushes are for, to switch between windings. But you
already knew that ;)

Robert
 
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:4j0%c.15429$g0H1.4723@news04.bloor.is.net.cable.rogers.com...
In article <10joqh3jc61v30c@corp.supernews.com>, "Watson A.Name -
\"Watt
Sun, the Dark Remover\"" <NOSPAM@dslextreme.com> says...

"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:IAv_c.143505$pTn.97721@news01.bloor.is.net.cable.rogers.com...
On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson
A.Name)
wrote:

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that.
I
have no idea why it has to be DC, since it's obviously from
some
big
heavy stationary equipment.
snip

How may terminals does it have? (and if more than 2 are the the
same
size?)

It has two heavy (16ga?) wires, a red and a black.

Given the description I doubt that it's series wound but it might
be
shunt wound.

What? Series? Shunt? A permanent magnet motor has only one
winding!
Well, you didn't mention that you already knew it was a PM motor :).
A
two terminal motor could be either PM or series wound. Given the
voltage
and current rating, and the fact that the leads are different colours
I
would strongly suspect PM.

A series wound motor with 2 terminals is commonly used for pump motors
(the field is wired to the armature internally eliminating 2 of the
usual
terminals from what would atherwise be a four terminal motor, brushed
DC
motors come in variations from two terminals to six terminals at
least).
They have the advantage of not needed extra jumper wiring and they
cannot
be hooked up backwards. No matter which polarity you hook the 2
terminals
up in the motor always rotates in the same direction.

And to be picky a PM motor has multiple windings, that's what the
commutator and brushes are for, to switch between windings. But you
already knew that ;)
Click to expand...
Yeah, but a shunt wound motor could be connected internally with only
two leads externally. I forget which kind a vacuum motor is but I
remember that one kind isn't used for some things because it can rev up
excessively if there's no load, so it's usually used for something like
a vacuum that has impellers permanently attached. Been a long time,
tho, so I'm not sure. Generally tho the vacuums have only two wires.

Anyway, I'll have to investigate further to see what this beasty really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll put a
light bulb on the leads and give it a spin to see what happens. Thanks.

> Robert
 
In article <10jpbvqht2kjo74@corp.supernews.com>, "Watson A.Name - \"Watt
Sun, the Dark Remover\"" <NOSPAM@dslextreme.com> says...
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:4j0%c.15429$g0H1.4723@news04.bloor.is.net.cable.rogers.com...
In article <10joqh3jc61v30c@corp.supernews.com>, "Watson A.Name -
\"Watt
Sun, the Dark Remover\"" <NOSPAM@dslextreme.com> says...

"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:IAv_c.143505$pTn.97721@news01.bloor.is.net.cable.rogers.com...
On 4 Sep 2004 08:19:15 -0700, veryfree123@hotmail.com (Watson
A.Name)
wrote:

It takes 124VDC, yeah, DC, at 16.6 AMPS or something like that.
I
have no idea why it has to be DC, since it's obviously from
some
big
heavy stationary equipment.
snip

How may terminals does it have? (and if more than 2 are the the
same
size?)

It has two heavy (16ga?) wires, a red and a black.

Given the description I doubt that it's series wound but it might
be
shunt wound.

What? Series? Shunt? A permanent magnet motor has only one
winding!
Well, you didn't mention that you already knew it was a PM motor :).
A
two terminal motor could be either PM or series wound. Given the
voltage
and current rating, and the fact that the leads are different colours
I
would strongly suspect PM.

A series wound motor with 2 terminals is commonly used for pump motors
(the field is wired to the armature internally eliminating 2 of the
usual
terminals from what would atherwise be a four terminal motor, brushed
DC
motors come in variations from two terminals to six terminals at
least).
They have the advantage of not needed extra jumper wiring and they
cannot
be hooked up backwards. No matter which polarity you hook the 2
terminals
up in the motor always rotates in the same direction.

And to be picky a PM motor has multiple windings, that's what the
commutator and brushes are for, to switch between windings. But you
already knew that ;)

Yeah, but a shunt wound motor could be connected internally with only
two leads externally. I forget which kind a vacuum motor is but I
remember that one kind isn't used for some things because it can rev up
excessively if there's no load, so it's usually used for something like
a vacuum that has impellers permanently attached. Been a long time,
tho, so I'm not sure. Generally tho the vacuums have only two wires.
Haven't run across that configuration (that would run in the same
Click to expand...
direction regardless of polarity as well), all the shunt wound motors
I've seen were done that way for speed and/or torque control so the
fiels and armature sections were separately controllable. The universal
appliance motors i've seen (only a few) have all been series wound. The
larger series wound motors I've dealt with have had enough physical
(as opposed to electrical) resistance that runaway was not a practical
problem, not that I was tempted to rely on that often.

Anyway, I'll have to investigate further to see what this beasty really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll put a
light bulb on the leads and give it a spin to see what happens. Thanks.
Or short it and see if you get a braking effect.
Click to expand...

Robert
 
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:jA5%c.700$ZjZ1.378@news04.bloor.is.net.cable.rogers.com...
[snip]
And to be picky a PM motor has multiple windings, that's what the
commutator and brushes are for, to switch between windings. But
you
already knew that ;)

Yeah, but a shunt wound motor could be connected internally with
only
two leads externally. I forget which kind a vacuum motor is but I
remember that one kind isn't used for some things because it can rev
up
excessively if there's no load, so it's usually used for something
like
a vacuum that has impellers permanently attached. Been a long time,
tho, so I'm not sure. Generally tho the vacuums have only two
wires.
Click to expand...

Haven't run across that configuration (that would run in the same
direction regardless of polarity as well), all the shunt wound motors
I've seen were done that way for speed and/or torque control so the
fiels and armature sections were separately controllable. The
universal
appliance motors i've seen (only a few) have all been series wound.
The
larger series wound motors I've dealt with have had enough physical
(as opposed to electrical) resistance that runaway was not a practical
problem, not that I was tempted to rely on that often.
Click to expand...
Yeah, I believe series wound is the one that can rev up real high. My
dad knew a guy who had more muscle than brains, who took an old vacuum
cleaner motor and put an old saw blade on the end of the shaft. Made
himself a great edger, back before the days of the weed whackers. Thing
made a nasty hissing sound. Threw some nasty sparks, too.

Anyway, I'll have to investigate further to see what this beasty
really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll put a
light bulb on the leads and give it a spin to see what happens.
Thanks.
Click to expand...

Or short it and see if you get a braking effect.
Click to expand...
Yeah, I took a 327 (28V) lamp and some alli clips out to the garage and
connected them to the wires and gave it a spin. The lamp lit up amber,
probably 10 or 12V at .04 A or so. That's pretty decent for the hundred
or two RPMs I can spin the flywheel.

Here's what the nameplate said on it.

Pacific Scientific Automation Technology Group Motor Products Div.

Model Number PWM3636-5250-7-1
Volts 124VDC Amps 16.8 H.P. 2.3 RPM 3590 Duty CONT

And here's the dead giveaway: Field Class: PM

I had suspected that it was PM - permanent magnet, because I could feel
the poles of the armature pulling on the magnets as I spun it.

I took some pics, I'll have to post some of them on ABSE after I get
them out of my digi-cam.

> Robert
 
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote in
message news:10jq0hpesud3r0b@corp.supernews.com...
"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:jA5%c.700$ZjZ1.378@news04.bloor.is.net.cable.rogers.com...
[snip]
And to be picky a PM motor has multiple windings, that's what the
commutator and brushes are for, to switch between windings. But
you
already knew that ;)

Yeah, but a shunt wound motor could be connected internally with
only
two leads externally. I forget which kind a vacuum motor is but I
remember that one kind isn't used for some things because it can rev
up
excessively if there's no load, so it's usually used for something
like
a vacuum that has impellers permanently attached. Been a long time,
tho, so I'm not sure. Generally tho the vacuums have only two
wires.

Haven't run across that configuration (that would run in the same
direction regardless of polarity as well), all the shunt wound motors
I've seen were done that way for speed and/or torque control so the
fiels and armature sections were separately controllable. The
universal
appliance motors i've seen (only a few) have all been series wound.
The
larger series wound motors I've dealt with have had enough physical
(as opposed to electrical) resistance that runaway was not a practical
problem, not that I was tempted to rely on that often.

Yeah, I believe series wound is the one that can rev up real high. My
dad knew a guy who had more muscle than brains, who took an old vacuum
cleaner motor and put an old saw blade on the end of the shaft. Made
himself a great edger, back before the days of the weed whackers. Thing
made a nasty hissing sound. Threw some nasty sparks, too.

Anyway, I'll have to investigate further to see what this beasty
really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll put a
light bulb on the leads and give it a spin to see what happens.
Thanks.

Or short it and see if you get a braking effect.

Yeah, I took a 327 (28V) lamp and some alli clips out to the garage and
connected them to the wires and gave it a spin. The lamp lit up amber,
probably 10 or 12V at .04 A or so. That's pretty decent for the hundred
or two RPMs I can spin the flywheel.

Here's what the nameplate said on it.

Pacific Scientific Automation Technology Group Motor Products Div.

Model Number PWM3636-5250-7-1
Volts 124VDC Amps 16.8 H.P. 2.3 RPM 3590 Duty CONT

And here's the dead giveaway: Field Class: PM

I had suspected that it was PM - permanent magnet, because I could feel
the poles of the armature pulling on the magnets as I spun it.

I took some pics, I'll have to post some of them on ABSE after I get
them out of my digi-cam.
Robert
Click to expand...
That's a winner. I have one of somewhat smaller size.
Name plate says McMILLAN Electric Company
Model S3348B2716
DP FITNESS P/N 37073300
120 VDC 6.0AMP
Insulation Class 130-2(B)
WOODVILLE, WI 54028

I haven't done curves on it yet, but like you I put a lamp (#47) and spun it by
hand. Lit up nicely! So I get over 6VDC at only a couple hundred RPM. Should
make a fine wind charger.
 
"Clarence" <No@No.Com> wrote in message
news:QC8%c.16989$_U.14949@newssvr27.news.prodigy.com...
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote in
message news:10jq0hpesud3r0b@corp.supernews.com...

"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:jA5%c.700$ZjZ1.378@news04.bloor.is.net.cable.rogers.com...
[snip]
And to be picky a PM motor has multiple windings, that's what
the
commutator and brushes are for, to switch between windings.
But
you
already knew that ;)

Yeah, but a shunt wound motor could be connected internally with
only
two leads externally. I forget which kind a vacuum motor is but
I
remember that one kind isn't used for some things because it can
rev
up
excessively if there's no load, so it's usually used for
something
like
a vacuum that has impellers permanently attached. Been a long
time,
tho, so I'm not sure. Generally tho the vacuums have only two
wires.

Haven't run across that configuration (that would run in the same
direction regardless of polarity as well), all the shunt wound
motors
I've seen were done that way for speed and/or torque control so
the
fiels and armature sections were separately controllable. The
universal
appliance motors i've seen (only a few) have all been series
wound.
The
larger series wound motors I've dealt with have had enough
physical
(as opposed to electrical) resistance that runaway was not a
practical
problem, not that I was tempted to rely on that often.

Yeah, I believe series wound is the one that can rev up real high.
My
dad knew a guy who had more muscle than brains, who took an old
vacuum
cleaner motor and put an old saw blade on the end of the shaft.
Made
himself a great edger, back before the days of the weed whackers.
Thing
made a nasty hissing sound. Threw some nasty sparks, too.

Anyway, I'll have to investigate further to see what this beasty
really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll
put a
light bulb on the leads and give it a spin to see what happens.
Thanks.

Or short it and see if you get a braking effect.

Yeah, I took a 327 (28V) lamp and some alli clips out to the garage
and
connected them to the wires and gave it a spin. The lamp lit up
amber,
probably 10 or 12V at .04 A or so. That's pretty decent for the
hundred
or two RPMs I can spin the flywheel.

Here's what the nameplate said on it.

Pacific Scientific Automation Technology Group Motor Products Div.

Model Number PWM3636-5250-7-1
Volts 124VDC Amps 16.8 H.P. 2.3 RPM 3590 Duty CONT

And here's the dead giveaway: Field Class: PM

I had suspected that it was PM - permanent magnet, because I could
feel
the poles of the armature pulling on the magnets as I spun it.

I took some pics, I'll have to post some of them on ABSE after I get
them out of my digi-cam.
Robert

That's a winner. I have one of somewhat smaller size.
Name plate says McMILLAN Electric Company
Model S3348B2716
DP FITNESS P/N 37073300
120 VDC 6.0AMP
Insulation Class 130-2(B)
WOODVILLE, WI 54028

I haven't done curves on it yet, but like you I put a lamp (#47) and
spun it by
hand. Lit up nicely! So I get over 6VDC at only a couple hundred
RPM. Should
make a fine wind charger.
Click to expand...
I doubt if I'll ever get a chance to use it unless I put it on an
exercise bike. The amount of power needed to spin it means it'll have
to have a substantial set of blades. And it needs to be geared up (or
more appropriately, pulleyed up) so that it'll spin several times as fas
t as the blades. The flywheel probably doesn't serve any purpose and
isn't needed, and could be left off. Maybe I'll sell it. Your motor
seems like it might be from some exercize bike??
 
"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote in
message news:10jq9v479tbo154@corp.supernews.com...
"Clarence" <No@No.Com> wrote in message
news:QC8%c.16989$_U.14949@newssvr27.news.prodigy.com...

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote in
message news:10jq0hpesud3r0b@corp.supernews.com...

"R Adsett" <radsett@junk.aeolusdevelopment.cm> wrote in message
news:jA5%c.700$ZjZ1.378@news04.bloor.is.net.cable.rogers.com...
[snip]
And to be picky a PM motor has multiple windings, that's what
the
commutator and brushes are for, to switch between windings.
But
you
already knew that ;)

Yeah, but a shunt wound motor could be connected internally with
only
two leads externally. I forget which kind a vacuum motor is but
I
remember that one kind isn't used for some things because it can
rev
up
excessively if there's no load, so it's usually used for
something
like
a vacuum that has impellers permanently attached. Been a long
time,
tho, so I'm not sure. Generally tho the vacuums have only two
wires.

Haven't run across that configuration (that would run in the same
direction regardless of polarity as well), all the shunt wound
motors
I've seen were done that way for speed and/or torque control so
the
fiels and armature sections were separately controllable. The
universal
appliance motors i've seen (only a few) have all been series
wound.
The
larger series wound motors I've dealt with have had enough
physical
(as opposed to electrical) resistance that runaway was not a
practical
problem, not that I was tempted to rely on that often.

Yeah, I believe series wound is the one that can rev up real high.
My
dad knew a guy who had more muscle than brains, who took an old
vacuum
cleaner motor and put an old saw blade on the end of the shaft.
Made
himself a great edger, back before the days of the weed whackers.
Thing
made a nasty hissing sound. Threw some nasty sparks, too.

Anyway, I'll have to investigate further to see what this beasty
really
is. It's heavy, so it's gonna stay in my garage. Maybe I'll
put a
light bulb on the leads and give it a spin to see what happens.
Thanks.

Or short it and see if you get a braking effect.

Yeah, I took a 327 (28V) lamp and some alli clips out to the garage
and
connected them to the wires and gave it a spin. The lamp lit up
amber,
probably 10 or 12V at .04 A or so. That's pretty decent for the
hundred
or two RPMs I can spin the flywheel.

Here's what the nameplate said on it.

Pacific Scientific Automation Technology Group Motor Products Div.

Model Number PWM3636-5250-7-1
Volts 124VDC Amps 16.8 H.P. 2.3 RPM 3590 Duty CONT

And here's the dead giveaway: Field Class: PM

I had suspected that it was PM - permanent magnet, because I could
feel
the poles of the armature pulling on the magnets as I spun it.

I took some pics, I'll have to post some of them on ABSE after I get
them out of my digi-cam.
Robert

That's a winner. I have one of somewhat smaller size.
Name plate says McMILLAN Electric Company
Model S3348B2716
DP FITNESS P/N 37073300
120 VDC 6.0AMP
Insulation Class 130-2(B)
WOODVILLE, WI 54028

I haven't done curves on it yet, but like you I put a lamp (#47) and
spun it by
hand. Lit up nicely! So I get over 6VDC at only a couple hundred
RPM. Should
make a fine wind charger.

I doubt if I'll ever get a chance to use it unless I put it on an
exercise bike. The amount of power needed to spin it means it'll have
to have a substantial set of blades. And it needs to be geared up (or
more appropriately, pulleyed up) so that it'll spin several times as fas
t as the blades. The flywheel probably doesn't serve any purpose and
isn't needed, and could be left off. Maybe I'll sell it. Your motor
seems like it might be from some exercize bike??

It was from a Tread mill. Bought it for a wind genny. Only need a 12/1 pulley
Click to expand...
up to get about 4 amps at 12 volts. Just have to put the front end regulator
on it for current limiting. I'm guessing about a 6 foot rotator will drive it.
Of course in a real blow it can produce much more power. The rating is for 720
watts so it is about the same as a car alternator, but at lower RPM. Use in
town is unlikely. I have a cabin in the desert.

Yours will do well to, if you pulley it up and use a larger rotator (prop) for
it. Problem is where to put it. Although I would see it as more useful for
marine battery charging with a 16 inch prop towed on a torque line to charge
batteries on a crusing sail boat. Might be able to sell it to someone who has
a good sized boat.
 
"Ken Smith" <kensmith@green.rahul.net> wrote in message
news:cj6qe4$4ho$2@blue.rahul.net...
In article <18ebe27.0409040719.1b6e8401@posting.google.com>,
Watson A.Name <veryfree123@hotmail.com> wrote:
[...]
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm
just
wondering if anyone has worked with something like this, and if it
will make a decent generator.

It sounds like the motor a friend of mine used in a wind powered
battery
charger. He built a wind mill that doesn't get anything like 3600 RPM
on
the motor, but does make more than 24V in weak winds. I designed and
build a charger/regulator for it so his battery pack could be kept
topped
up.

It works quite well. In his location it is either sunny or windy or
both
but never neither. As a result a combined wind, solar system keeps
the
battery charged.
Click to expand...
Well, at least half the day it's not sunny - it'c called night.

As for wind, it's likely that at night there are periods of no wind.
See, when you think about it, if what you said was true, then there
would be no need for the battery. :-0

With no field winding, I'm not sure how easy it is to regulate the
charging. I'd just disconnect it from the battery and switch a load on
the output.

--
kensmith@rahul.net forging knowledge
Click to expand...
 
In article <18ebe27.0409040719.1b6e8401@posting.google.com>,
Watson A.Name <veryfree123@hotmail.com> wrote:
[...]
Maybe if I get a chance I'll take a pic and post it to ABSE. I'm just
wondering if anyone has worked with something like this, and if it
will make a decent generator.
Click to expand...
It sounds like the motor a friend of mine used in a wind powered battery
charger. He built a wind mill that doesn't get anything like 3600 RPM on
the motor, but does make more than 24V in weak winds. I designed and
build a charger/regulator for it so his battery pack could be kept topped
up.

It works quite well. In his location it is either sunny or windy or both
but never neither. As a result a combined wind, solar system keeps the
battery charged.


--
--
kensmith@rahul.net forging knowledge
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top