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Hurst model T motor Answered

Hello my name is Freddy iam in New York DYI hobbiest and iam doing a table project that is a rotating workbench for different bench top tools to be used and it will rotate on this motor but my problem is how to power it.. I would like to plug it and later add a switch to it.. Any help would be greatly appreciated thank you for time and patience... Freddy Westchester New York/AKA YO

Discussions

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Downunder35m

11 days ago

It is a syncronous motor and you need a capacitor to run it.
Check the info here for the wiring and what capacitor you need.
Runs directly on (US) AC mains).

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Jack A Lopez

11 days ago

From looking at your pictures, I noticed there is a piece of white wire connected, by way of a crimped wire nut, to the two blue wires.

That suggests the previous owners of this motor had the neutral wire, from the 120 VAC mains, connected there.

The line (or hot) wire of the mains, was likely connected to either the red, or the black, but never both at the same time, by way of triple throw switch, like the one seen in the diagram on the page I linked to, in my previous reply.

Also, regarding that previous reply, it is important for that capacitor to be there, so be sure to check on that.

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Jack A Lopez

12 days ago

Have you seen this page?

https://www.hurst-motors.com/tgeared.html

My other question is, do you happen to have the 0.68 microfarad, non-polarized capacitor that goes with this motor?

I suppose there is a possibility that capacitor might be small enough to be hiding inside the motor. Although motor run capacitors are usually big chunky things. So if it is there, it will likely just barely fit.

I mean, you should unscrew that plate on the back, and peek at what is underneath it, to see if something resembling a capacitor is hiding inside that space.

If the capacitor is there, it should be wired between the red and black wires. Or at least that is where the wiring diagram, on the page linked above, indicates it should be wired.

If you do not see any capacitor inside, that means you should get one, because it is necessary for the motor to run.

By the way, that wiring diagram also gives us some hints regarding how to make this motor run in two different directions, clockwise or counterclockwise, at the throw of a switch.

One error in that diagram, as far as I am concerned, is that should not be a double throw switch, but rather a triple throw. In other words, that switch should have three positions, essentially {left, center, right} with the center position being used to disconnect (turn off) the motor.