One thing I have not seen mentioned yet is the need for the magnet wire in the motor to be "inverter rated". Most modern motors are, but older ones are not. If the wire is not up to the task the insulation on the motor windings will eventually punch through from the switching transients and you will be replacing the motor or having it rewound.
You can find VFDs in smaller sizes up to 2HP that will run a 2HP motor off of single phase. It must say so in the specifications. I have a 2HP drive on my South Bend lathe with a 2HP motor. It worked great until the insulation punched through. I did not know about inverter rated magnet wire at the time. Lathe is WWII vintage. Now it is a boat anchor. Motor is two speed, hi speed is 825RPM. Replacement motors not available. The old man who rewound motors by hand for the oil fields is long dead, so someday will have to take on that project myself. Mean time I have a Taiwan made single phase motor lathe that does what I need.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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