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Re: [Amps] What is the meaning of ACVFD ?

To: "'Roger \(sub1\)'" <>
Subject: Re: [Amps] What is the meaning of ACVFD ?
From: "Gary Schafer" <>
Date: Sat, 2 Jul 2011 21:54:33 -0400
List-post: <">>

> -----Original Message-----
> From: []
> On Behalf Of Roger (sub1)
> Sent: Saturday, July 02, 2011 9:29 PM
> Cc:
> Subject: Re: [Amps] What is the meaning of ACVFD ?
> On 7/2/2011 9:00 PM, Carl wrote:
> > A 10 HP or higher 3 phase motor and a couple of surplus utility
> > company phasing capacitors is the working mans way to tackle it.
> >
> > Since I dont run that much big 3 phase tools and only one at a time, a
> > 7.5 HP "idler" motor has been used for over 20 years, it draws
> > negligible power to run. The motor cost $50 and the caps were $5 each.
> > There is a surplus of 3 phase motors these days and the cost would
> > likely be scrap value if you shop around.
> You read my mind. <:-))
> There are quite a few tool room lathes and mills available at very
> reasonable prices lately.  They are usually a *tad* large for hobbyists
> and the market for machine shops has pretty well dried up as that's
> where most are coming from.  I've been looking at a Bridgeport floor
> mill with digital readout on all three axises as well as power feed on
> all three.  I don't remember if it's a 42 or 48" bed.  Weight is *about*
> 2000#. All 3 phase. I think the main motor is 3 or 4 HP...Might be 5,
> but I don't think it's that large.   I'm also looking at a tool room
> lathe with a 7 HP 3 phase motor (60" bed) weight is about 5,000# (give
> or take)
> I have to admit I like the thought of a CNC, but virtually all are of
> the older style and not an advantage for a one or two off project.  The
> new ones will take the input from my 3-D drafting program and you just
> have to put in the tool sizes. I'm not at all familiar with the older
> CNC setups.  New ones are *expensive*
> 73
> Roger (K8RI)

What are you seeing for prices on those machines Roger?

Gary K4FMX

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