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What projects could I do with an industrial electric motor (1 to 7.5 HP)? Answered


My local Habitat for Humanity ReStore has a bunch of used Baldor Brand AC motors for $40. Power ranges from 1HP to 7.5 HP. It seems like a good deal since these things retail for a couple of hundred. I was wondering what I could use one of these for. Also, could I just wire one of these things up to a wall outlet to make it run, or would I need some kind of controller. What considerations should I take in picking which motor to buy? power? 3 phase vs 1 phase? etc?

Tags:motor

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countable

8 years ago

If you have no 3 phase power supply, then just rip the motor apart and sell the copper and steel for scrap, you may break even on it.

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blkhawk

8 years ago

What about attaching a stone and converting some of these motors into grinders? At least the one phase, because the three phase will be mostly for industrial applications.

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frollard

8 years ago

They are mostly useful for...industrial applications. If you don't have a use for them you're better off selling them. They can do...anything a motor can do :)

As I've recently learned, 3-phase is better for starting under load, but requires a more complex contactor (switch) to turn on.

Single phase motors can be run on standard household wiring (with consideration for voltage) -- some require a capacitor to start; depends on the motor configuration.

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waltboszfrollard

Answer 8 years ago

Thanks for the tips on phase.

As far as project ideas go, I was looking for suggestions like build a high power chipper using a bucket and a edger blade, or maybe make a giant rock tumbler.

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lemonie

8 years ago

You might consider re-selling for profit and then give Habitat for Humanity ReStore a share.
But otherwise you're going about things the wrong way. It's like asking what you can do with a distributor-cap from a Ford Prefect... You either need a motor for a job or you don't, creating a job around something like this is irrational.

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waltboszlemonie

Answer 8 years ago

I haven't bought the motor yet to resell. ReStore is selling it, I'll let them figure out their own profit margins. If you've never heard of a ReStore, the accept donations of building supplies, and resell them at discounted prices. It's a cool place, you should look up your local one.

Also, I view this site as a playground for tinkerers like me that are always looking to build some sort of project.

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lemoniewaltbosz

Answer 8 years ago


I think my nearest store is a few thousand miles away...

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seandogue

8 years ago

IFF you have 3-phase service at your location, and IFF you use some form of beefy single phase motor for a pump or other purpose (might make a solid source for a small lathe or a near continuous-duty table saw) currently that operates for long durations, then yeah. Otherwise...cool as they look, more work than they will economically return.