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On Sun, 1/6/19, cwlathes <carvelw@...> wrote:

Subject: Re: [atlas-craftsman IO] Finally workbench for my lathe
To: [email protected]
Date: Sunday, January 6, 2019, 9:46 AM

#yiv1056652571
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#yiv1056652571 Hi Bill,

?That is very curious .

My post war Atlas catalogue lists only 1/3 and
? HP motors ( single and 3 phase ) for the 10” lathe (
see below )

I wonder how
that came about – maybe one of our more knowledgeable
historians can assist :>)

With regard to the VFD , my understanding is
that a smaller VFD can drive a larger motor provided the
current limit of the VFD is not exceeded, and a larger VFD
can drive a smaller motor provided the current limit of the
motor is not exceeded – but I speak under correction ,

?Keep well,
?Carvel
? ?From:
[email protected] [mailto:[email protected]]
On Behalf Of Bill in OKC too via Groups.Io
Sent: 06 January 2019 10:55 AM
To: [email protected]
Subject: Re: [atlas-craftsman IO]
Finally workbench for my lathe ?Don't know about that.
The serial number card says it was shipped with a 3/4hp 1ph
1725 rpm motor. And a 3/4hp VFD might not be able to turn a
motor rated for 2hp at all. And the motor is physically
large enough it could be a 3HP motor. I don't know a lot
about 3phase motors, but I work with them, so have been
reading up on them. My equipment that I work on has quite a
variety of motors, many 3 phase, and rated from 1/4HP to
60HP. I've still got a lot of parts to derust, paint,
and put back together, so I'm not in a great hurry at
the moment. Get down to the last couple of parts, it will
get more urgent, though, I do suspect! ;) ?Bill in OKC ?On Sunday, January 6, 2019,
1:48:59 AM CST, cwlathes <carvelw@...>
wrote:
?
?Morning
Bill,

The VFD doesn’t
HAVE to be matched to the motor power wise , as long as it
can deliver enough power for your needs . . . .

In other words , if you
happened to come across a VFD capable of driving a ? HP
motor , and your mystery motor was rated at 1HP , all it
would mean is that you would be limited to drawing ? of its
capacity which would probably be more than adequate given
that the original motors for this lathe were 1/3 or ? HP
?Regards,
?Carvel
?From:
[email protected] [mailto:[email protected]]
On Behalf Of Bill in OKC too via Groups.Io
Sent: 06 January 2019 06:06 AM
To: [email protected]
Subject: Re: [atlas-craftsman IO]
Finally workbench for my lathe?I'm
thinking a 3/4hp 3ph motor and VFD for mine, as my 10L
originally shipped with a 1725rpm 3/4hp 1ph motor.
Everything I've read or heard about the Teco VFD's
seem to indicate they're the smart move. Haven't had
much luck finding anything for less than about $3-400 for
the combination, plus shipping.??The
lathe came with a 3ph motor without a data plate. Old but
not quite as rusty as the rest of the lathe. I have a
contact tachometer so could find out what speed it is, but
I'd have to take it to work to get power to test it. Did
borrow their megger, no leakage or shorts at 1kv. If I knew
what hp it's rated for I could just buy the VFD. I have
220vac power in the shop at one location, could extend it.
Or move the lathe to it.??I
gave up on my HF tool chest as a stand for my Atlas TH42. It
is just a bit too long, and also too wide for the "42
inch" tool box. That is 42 inches including the handle.
40 inches long x 18 inches deep, about a 3/4"lip on
back and sides. I got it just before they came out with the
22" deep tool chests, of course. So it's going to
be a tool chest. With tools in it. Imagine that!
:)?The
table is one I've mentioned here before. It's 3'
x 8', 1/8" steel top, now with 1" of Baltic
birch plywood on top of the steel. I need to get the drip
pan I told you about from under the Atlas MF Mill and put it
under the Atlas lathe. I have a new 2' x 3' drip pan
for the mill, and another for the Lewis shaper. I've
been planning on putting that on the table with the lathe
and mill, but I'm wondering if that is such a good idea.
I've only run the shaper once, and promptly took it back
off the heavy steel file cabinet I'd mounted it on. Lots
of momentum there as the ram moves back and forth. Probably
do bad things to the fine finish on a part turned while it
was running. :)?Bill
in OKC????On
Fri, Jan 4, 2019 at 11:39 PM, Jody<jp4lsu@...>
wrote:So
the motor is a Baldor 3 phase 1/2 hp.I
picked it up new on ebay for real cheap. It was a steal of a
deal and made it much easier to justify the conversion. The
original motor was likely going to require a re-wire and
rebuild.?I
have a Teco 1/2 hp size VFD.? I've been real happy with
it and the technical support was very helpful with a direct
line to technicians.? I called them a few times with wiring
and programing questions...and they were very
helpful.???-Jody
(DFW)

-------- Original message
--------
From: mike allen
<animal@...>
Date: 1/4/19 10:14
PM (GMT-06:00)
To:
[email protected]
Subject: Re:
[atlas-craftsman IO] Finally workbench for my lathe

any more info on yer motor
& controller ?

???
??? animal

On 1/4/2019
1:14 PM, Jody wrote:Bill,
Funny and stupid story, I set mine up with a
VFD with fwd/rev,
potentiometer, jog, and E
stop.

I tested the E stop
and was nevous that the thing would spin off.? I
actually need to make the stop not quite as
harsh.? But it didn't
fling off the
spindle thankfully.
-Jody