On 7/2/2011 10:09 PM, Roger (sub1) wrote:
> On 7/2/2011 9:54 PM, Gary Schafer wrote:
>>> -----Original Message-----
>>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
>>> On Behalf Of Roger (sub1)
>>> Sent: Saturday, July 02, 2011 9:29 PM
>>> Cc: amps@contesting.com
>>> 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?
>
> The ones I've been looking at have been in the 2 to 3 grand range.
I should have mentioned they are fully checked out for running true and
the ways are also true. They have been reconditioned where necessary
and I can check them out before buying. That lathe with 60" between
centers is a monster. I do need to build a hoist for the lathe 3 and 4
jaw chucks and for the index table and vise for the mill. They are too
heavy for me to lift at 200# plus for the 12" table. I think the chucks
are about 160# I used to easily lift the 10" index table, but my back
would never take it now days, let alone a 12" table.
The 60" lathe may turn out to be just too large for my shop although I
know a 50" will fit although I'd prefer a 40" with at least a 4" spindle
bore. They do make them with large spindle bores, or did. A new 16 X
60 South Bend is over 40 grand which is wayyyy out of my price range.
My goal is to be able to do some amp and tower projects, so there are
some metal working tools needed as well.
Seems like I used to remember toys were cheaper, but my folks always
said I liked expensive toys. <:-)) Come to think of it, so does Joyce
and she's a ham too so she knows how much a lot of this stuff costs. <:-))
73
Roger (K8RI)
> 73
>
> Roger (K8RI)
>> 73
>> Gary K4FMX
>>
>>
>
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