Paul on tue 23 sep 03
A question for those who built wheels, have electronics experience, etc: Is
there a cost-effecient way to obtain a DC controller for a permanent magnet
dc motor that would be used with a footpedal in a spray booth? I have an old
wheel head and a 1 hp dc motor and i want to find a foot pedal and
controller to use as i spray, but everytime i even find a used dc controller
for sale it is very expensive. And of course a new one from an industrial
supplier costs more than an average potters wheel of the shelf, so i assume
i am missing something here.
(i considered using a sewing machine motor for this light-duty application
as Vince and others had pointed out, but found that the large 0-ring pulley
i would need on the banding wheel was hard to come by unless i special
ordered it from a supplier and very costly. So i would like to make use of
the motor i have)
One supplier said i would need a "dc controller," but another said i would
need a "dc power supply and rectifier" and i don't think these two things
are the same. Is there any simple and inexpensive way to go about this,
either by finding a used one or even making one out of the components?
thanks,
Paul B
Falmouth,Ky
Scott Ackerman on tue 23 sep 03
Why don't you call Tom at Thomas Stuart Wheels. He could probably sell =
you
all of the parts you need to do this. His phone number is 303-832-2128 =
or
you could email him @ info@thomasstuart.com. I am not in any way =
associated
with Thomas Stuart other than owning two of their wheels and thinking =
that
they are great, and Tom has been great to talk to when I have needed =
help
modifying one of my wheels.
"Every improvement in the standard of work men do is followed swiftly =
and
inevitably by an improvement in the men who do it" - William Morris
=20
Scott Ackerman
1133 Riverside
Suite B
Fort Collins, CO 80524
970-231-9035
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Paul
Sent: Tuesday, September 23, 2003 12:42 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: DC CONTROLLERS?
A question for those who built wheels, have electronics experience, etc: =
Is
there a cost-effecient way to obtain a DC controller for a permanent =
magnet
dc motor that would be used with a footpedal in a spray booth? I have an =
old
wheel head and a 1 hp dc motor and i want to find a foot pedal and
controller to use as i spray, but everytime i even find a used dc =
controller
for sale it is very expensive. And of course a new one from an =
industrial
supplier costs more than an average potters wheel of the shelf, so i =
assume
i am missing something here.
(i considered using a sewing machine motor for this light-duty =
application
as Vince and others had pointed out, but found that the large 0-ring =
pulley
i would need on the banding wheel was hard to come by unless i special
ordered it from a supplier and very costly. So i would like to make use =
of
the motor i have)
One supplier said i would need a "dc controller," but another said i =
would
need a "dc power supply and rectifier" and i don't think these two =
things
are the same. Is there any simple and inexpensive way to go about this,
either by finding a used one or even making one out of the components?
thanks,
Paul B
Falmouth,Ky
_________________________________________________________________________=
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Vince Pitelka on tue 23 sep 03
> (i considered using a sewing machine motor for this light-duty application
> as Vince and others had pointed out, but found that the large 0-ring
pulley
> i would need on the banding wheel was hard to come by unless i special
> ordered it from a supplier and very costly. So i would like to make use of
> the motor i have)
Paul -
Resourcefulness and innovation are always admirable, but there are so many
better uses for your DC motor. Use a sewing machine motor and rheostat, and
make your own big pulley to go on the banding wheel. Actually, any large
V-belt pulley would work, and you might be able to find one at a junkyard.
But if you can't, just cut a nice precise disk from 3/8" or 1/2" plywood,
with two slightly larger disks of Masonite or 1/4" ply for the flanges on
either side. Sand all of them very smooth around the perimeter, and then
glue and clamp them together. Get any old pulley or sprocket that fits the
shaft-size, and use that as a flange - attach it to the center of the
homemade plywood pulley, and that will allow you to mount the big pulley
squarely and firmly on the shaft. For the amount of torque you are dealing
with, you do not need a pulley that specifically fits the sewing machine
belt - just any old pulley with a groove around the circumstance that will
accept the belt. This is a simple project.
Good luck -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
Fredrick Paget on tue 23 sep 03
>A question for those who built wheels, have electronics experience, etc: Is
>there a cost-effecient way to obtain a DC controller for a permanent magnet
>dc motor that would be used with a footpedal in a spray booth?
Paul B.
I think you can get it to run off of a light dimmer with a full wave
rectifier and LC filter. This won't have a foot pedal though. You
could rig one up using a potentiometer in the foot switch to replace
the one in the dimmer. The old Brent controller is very similar to a
lamp dimmer.
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.com
joe simone on wed 24 sep 03
Hi Paul,
The DC controller is used to vary the speed of the motor.
If you only need a fixed speed than a power supply or power pack is the only
requirement.
The power pack converts the AC from your domestic outlet to DC.
On the motor there should be a label stating the voltage and current
requirements, eg. 12 Volts , 1 Amp . DC motors work at lower voltage than
that stated on the label with minor loss of speed, but the current must be
right or you loose a lot of torque.
It does not matter if the power pack is rated at a higher current, so long
the output voltage
is not higher than few volts.
If you require a variable speed than what you need is a " Variable voltage
power supply ", which is available from electronics ( Tandy ) or model
trains stores.
If you intend to use a foot pedal to control the speed than this can be
expensive because of the mechanics involved.
Hope this help a little, I have to know more of what you are trying to do.
Regards
Joe Simone
----- Original Message -----
From: Paul
To:
Sent: Wednesday, September 24, 2003 4:41 AM
Subject: DC CONTROLLERS?
> A question for those who built wheels, have electronics experience, etc:
Is
> there a cost-effecient way to obtain a DC controller for a permanent
magnet
> dc motor that would be used with a footpedal in a spray booth? I have an
old
> wheel head and a 1 hp dc motor and i want to find a foot pedal and
> controller to use as i spray, but everytime i even find a used dc
controller
> for sale it is very expensive. And of course a new one from an industrial
> supplier costs more than an average potters wheel of the shelf, so i
assume
> i am missing something here.
> (i considered using a sewing machine motor for this light-duty application
> as Vince and others had pointed out, but found that the large 0-ring
pulley
> i would need on the banding wheel was hard to come by unless i special
> ordered it from a supplier and very costly. So i would like to make use of
> the motor i have)
> One supplier said i would need a "dc controller," but another said i would
> need a "dc power supply and rectifier" and i don't think these two things
> are the same. Is there any simple and inexpensive way to go about this,
> either by finding a used one or even making one out of the components?
> thanks,
> Paul B
> Falmouth,Ky
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
Patti K Kratzke on wed 24 sep 03
Would a flywheel be a cost-effective alternative? Just get it going, and
then it should keep spinning long enough to allow you to get some
spraying done. Could be done with cement or wood, I should think. I
suppose there may be a problem fi the flywheel had to be so big that it
wouldn't fit directly under the booth (like the Lockerbies), but I would
think it would not have to be quite THAT big, as it would not need to
maintain a high speed for spraying, nor would you need as much power as
in throwing. Just brainstormin', here.
- pk
Patti Kratzke
PK Pottery at Cliffside Gardens
Kingston, WA
pkpotts@juno.com
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Michael Wendt on wed 24 sep 03
Paul,
Go to Harbor Freight on the web and order the router speed controller. I use
them in many applications here to control DC motors and they work fine
although they are not as fine as a Brent foot pedal.
Regards,
Michael Wendt
wendtpot@lewiston.com
piedpotterhamelin@COMCAST.NET on wed 24 sep 03
Try http://surpluscenter.com/.
Affordable prices. Good advice.
I buy from them
Rick
> > Subject: DC CONTROLLERS?
>
>
> > A question for those who built wheels, have electronics experience, etc:
> Is
> > there a cost-effecient way to obtain a DC controller for a permanent
> magnet
> > dc motor that would be used with a footpedal in a spray booth? I have an
> old
> > wheel head and a 1 hp dc motor and i want to find a foot pedal and
> > controller to use as i spray, but everytime i even find a used dc
> controller
> > for sale it is very expensive. And of course a new one from an industrial
> > supplier costs more than an average potters wheel of the shelf, so i
> assume
> > i am missing something here.
> > (i considered using a sewing machine motor for this light-duty application
> > as Vince and others had pointed out, but found that the large 0-ring
> pulley
> > i would need on the banding wheel was hard to come by unless i special
> > ordered it from a supplier and very costly. So i would like to make use of
>
> > the motor i have)
> > One supplier said i would need a "dc controller," but another said i would
> > need a "dc power supply and rectifier" and i don't think these two things
> > are the same. Is there any simple and inexpensive way to go about this,
> > either by finding a used one or even making one out of the components?
> > thanks,
> > Paul B
> > Falmouth,Ky
> >
> >
> ____________________________________________________________________________
> __
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
> >
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
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