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Dyna-motor generator




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From:  gweaver [SMTP:gweaver-at-earthlink-dot-net]
Sent:  Monday, May 25, 1998 11:36 AM
To:  Tesla-at-pupman-dot-com
Subject:  Dyna-motor generator

I have an antique dyna-motor generator that is fried.  I took it apart today
and unwound one of the windings.  I am trying to figure out what makes this
thing work.  When I get it fixed I hope to run the generator on my car
battery to get 120 vac to power a Tesla Coil.

The armature has a DC winding with brushes.  This winding has 16 coils.  The
field winding has 2 coils and is only wide enough to cover the 16 drive
winding, not the generator windings.  These coils are not connected to the
generator coils.  Probably 6 volt DC winding.

The generator section is offset from the drive section about 2".

The generator section has no field winding.  The generator has 2 sets of
windings that turn on the armature.  One set of winding are wound with #26
wire and the other set of winding are wound with #16 wire.  Each of these
windings has 4 coils like a 60 HZ electric motor.  Each set of winding are
rotated (offset) from each other, it looks like the start and run windings
of an electric motor.  The output is from 2 circle rings and brushes.

This is the interesting part.  The generator section has on power applied to
it internally.  It may be picking up a small amount of magnet field from the
drive section but it can't be very much because of the way its designed with
the 2 being seperate.  The #26 and #16 winding are both connected in
parallel.  The #26 winding is connected to a centrifical switch.  As the
armature picks up speed the switch opens and drops out the #26 winding.  The
output of the generator is totally from the #16 winding.  I think the output
is suppost to be 32 vac 15 amps.  I can use a step up transformer to get 120
vac or rewind the unit to produce 120 vac.

Is the #26 winding some how energizing the generator to get it started?
Then once it starts generating it energizes itself?

This thing is very old.  I got it at an old antique engine show last summer.
It was probably built around the turn of the centery.  The original name tag
is still on it.  It has nothing stamped on the name tag where it says volts
and amps.  The volt meter goes to 50 volts and the amp meter goes to 15
amps.  I know that many of the early generators built in those days were 32
volts so I figure this thing is probably designed to produce 32 volts.

The name plate says.  Fort Wayne Electric Works.  Fort Wayne Indiana.  It
even has the serial number.

It has 2 panel mount meters that are both broken and 2 variable resistors.
One variable resistor says volts and the other one says amps.  One of the
variable resistors is broken.  The wiring to the meters and resistors are
missing.   I would like to hook this thing up without the meters and
resistors if it will run that way.

Does anyone know anything about this type of generator technology?

Gary Weaver