I have a hunter DSP 9000 tire balancer for sale near me. But it is 220 3 phase which i dont have. I know there are phase converters available but they are expensive.
I read somewhere that 3 phase motors can be run on single phase 220, but the motor start would not work. (You can spin the tire once by hand to get it going then it would work).
Does this sound correct? What about the electronic read out on the machine? Would it work on single phase 220 without a converter?
I appreciate it!
They use the three phases for more than just the spindle. Unless that
balancer is VERY cheap (like under $500.00) you will have more into it
than buying one set up for single phase. Or buy a large rotary converter
and be able to run more 3 phase stuff.
You always try to jury-rig stuff. This is a several-thousands-of-dollars
machine. You can't spend $300 on a proper inverter to drive it?
If not, cobble up a static converter from $50 worth of parts, or build a
rotary converter from about $200 worth.
GEESH! Don't you EVER research anything before you ask for advice? All
you ever want to know is how to do a "crap job for pennies", when you
could do a GOOD job for a few bucks.
If all you ever _try_ to do is shit work, then all you'll ever make is
shit work; and from it will just be more shit in your garage.
Your context being "always"... Stryped isn't a troll, he just asks such
idiotic things, he sounds like one. He's one of those dolts who, like EA,
is widely known for his half-assed, unskilled work, who's unfortunately
real, and who believes everything told him by morons like EA.
I saw you 'agree' in one breath, and attack my skills in the second --
and you know nothing of what I do or how well I do it.
I apologize. When I said "$50" for a static converter, I forgot that
your time is worth nothing, and you just nail loose components to your
walls, rather than buying or building proper enclosures, providing non-
abrading cable entries, strain reliefs, plugs, etc. Since you don't use
them, you wouldn't know this; those 'little things' add up quickly,
unless, like Gunner, you've got seven acres of junk to pick through when
you need a part.
Heh... when Grainger sells something "half price", then it's only TWICE
what the normal retail price would be. They also list 'surplus' stuff
that's on their books, but for which they have no stock (anywhere in
I agree: You don't need large idler motors. As you say, ganged smaller
motors can work, too. But large or small, they all take up more space
than a decent VFD.
For 3HP, who'd want all that noise and rotating hardware taking up space
and wasting power when a small solid-state device will do the work BETTER
(better symmetry in the phases without load-specific tuning), AND is
programmable for ramp times. And with most equipment like that tire
balancer, there's enough empty space in the stand/cabinet to enclose the
VFD, so the whole device 'becomes' a single-phase unit.
Jim, I know you're not a troll, but that's such a troll-like question!
1) One worker or 100, having a grinder with open wheels or brushes
running ALL the time is just plain dangerous. A grinder dedicated to a
production job might run all the time, but not one that's casually-used.
2) One lapse of thought, one accidental swinging of some stock into the
rotating wheel, and you might be injured.
3) Unless you strap the on-off switch on, you might absent-mindedly
switch it off after a grinding job, which might or might not affect the
other running equipment using it as the 3rd-leg generator
4) It's just not _right_. It's an 'ugly solution' of a sort just begging
to be done differently.
"Lloyd E. Sponenburgh" <lloydspinsidemindspring.com> wrote in message
I haven't done it, just wondering if there was a consequence I havn't
thought of and couldn't easily avoid by guarding it. For example each
motor would need an indicator light to show that it's running, in case
several machines were used as idlers to increase the available power
I personally think that it is a hazard to have a grinder running all
the time unattended.
I scrap a lot of used 3 phase motors, and I could sell one for just 2x
scrap (to justify the time and expense). It works out to appx. $15 per
horsepower. If shipping is not involved, it is pretty sensible. With
shipping, usually the total cost is a bit too much for most people,
and that's why I scrap those motors and do not bother selling.
If you can find someone like me in your area, you could get, say, a
ugly dirty used 3 phase 5 HP motor for $75 and be all set. Or a ugly
dirty 2HP motor for $30. etc
It's only a theoretical question anyway, as I put single phase TEFC
motors on my lathe and surface grinder and the mill already had one.
I was wondering if the pedestal grinder, an incomplete drill bit
sharpener, could be its own simple rotary converter since it could be
jump-started with a drill.
Probably the most simple rotary converter design uses no switches, is
self-starting, and consists of nothing but a single oil cap and a three
Connection and operation is pretty much the same as what is commonly
known as a "PSC" motor.
I've stumbled across schematics etc. for such an arrangement numerous
times in the past, but I've never built or witnessed one in operation
and so I can't really comment further except to say that I suspect it
would probably start up slowly and / or tend to run somewhat on the warm
On Tuesday, July 9, 2013 2:14:05 PM UTC-4, PrecisionmachinisT wrote:
f-starting, and consists of nothing but a single oil cap and a three phase
n as a "PSC" motor.
es in the past, but I've never built or witnessed one in operation and so I
can't really comment further except to say that I suspect it would probabl
y start up slowly and / or tend to run somewhat on the warm side.
A good design for a rotary phase generator uses two motors. One is a three
phase motor and the other a single phase motor. The two motors are connec
ted by a variable belt drive so that the single phase motor is trying to sp
eed up the three phase motor. It is self starting and with a few capacitor
s has a reasonably power factor ( meaning it will run on a lower amp break
er. ) But it takes up a lot more room than a VFD and does not give you va
-Probably the most simple rotary converter design
-uses no switches, is self-starting, and consists of
-nothing but a single oil cap and a three phase motor.
-Connection and operation is pretty much the
-same as what is commonly known as a "PSC" motor.
-I've stumbled across schematics etc. for such an
-arrangement numerous times in the past, but I've
-never -built or witnessed one in operation and so
-I can't really comment further except to say that I suspect it
-would probably start up slowly and / or
-tend to run somewhat on the warm side.
I've been slowly accumulating the parts for a Fitch or Hanrahan rotary
converter. I have the schematics but no practical experience with
their quirks and limitations.
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