That motor is called a split-phase motor, and I too have a lathe that runs on it. They're very stable when their attain their designed speeds. The split phase only works during startup, after which a centrifugal switch disengages said phase off.

Here's a pic of my motor's plate:

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Also, check this page 187 of the Marathon Motors catalog.

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Consider now that " the slight time that the voltage is delayed by the cap " is another way of describing a "phase shift."
Sorry that I used a term that you did not understand. A phase shift is defined as a delay in the voltage change. Except when it is talking about current.

 

That motor is called a split-phase motor, and I too have a lathe that runs on it.

Generally those motors top out at around 1/4hp maybe 1/2hp tops.
Anything larger usually requires a start or run cap, or a combo of each.

 

Generally those motors top out at around 1/4hp maybe 1/2hp tops.
Anything larger usually requires a start or run cap, or a combo of each.

My lathe's motor is 1/4 hp (it's a very small lathe) ... so, yeah...

 

Consider now that " the slight time that the voltage is delayed by the cap " is another way of describing a "phase shift."
Sorry that I used a term that you did not understand. A phase shift is defined as a delay in the voltage change. Except when it is talking about current.

Oh I understood, and was just trying to say something you would understand. But you now seem to have changed your mind about the cap giving greater starting torque. Remember saying -

the capacitor -start scheme does provide greater starting torque than the motors that use the two different windings.