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Is this motor reversible?

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Forum topic by Andybb posted 07-12-2017 09:54 PM 415 views 0 times favorited 6 replies Add to Favorites Watch
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Andybb

543 posts in 437 days


07-12-2017 09:54 PM

I’ve reversed capacitor motors before but there was always a label and wiring guide. This is out of a HF band saw and I need to reverse the direction for my drum sander. Or do i need to see if I can remove the ends and reverse the housing, or am I out of luck? Can’t seem to find the right YouTube vid.

Thanks in advance.

-- Andybb - GO HAWKS!


6 replies so far

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MrUnix

5975 posts in 2032 days


#1 posted 07-12-2017 10:15 PM

Would be easier if it had a wiring diagram somewhere :)

You might want to check out this for some background info:
Reversing single phase induction motors

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Andybb

543 posts in 437 days


#2 posted 07-12-2017 10:39 PM

Thanks Brad. Yeah, that was the last thing I looked at before posting. It is an HS-19 motor and there are lots of diagrams for them online but none just like mine. My capacitor only has 2 wires feeding it, not 3 like in the link.

-- Andybb - GO HAWKS!

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MrUnix

5975 posts in 2032 days


#3 posted 07-12-2017 10:47 PM

There should only be two wires on the cap… not sure where you are seeing three? Anyway, here is the relevant diagram from the woodgears page – note, only two wires to the cap :)

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Andybb

543 posts in 437 days


#4 posted 07-12-2017 11:08 PM

Thanks for sticking with me Brad. I saw that drawing but I also saw this and was confused.

There are 4 heavy wires coming out of the case black & red connected to the red A/C wire and yellow and gray coming off of the black A/C wire in addition to the yellow and gray coming off of the capacitor. So am I swapping the capacitor wires?

It was always easy with the label that said “swap these wires to reverse direction”. :-)

-- Andybb - GO HAWKS!

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MrUnix

5975 posts in 2032 days


#5 posted 07-12-2017 11:21 PM

So am I swapping the capacitor wires?
- Andybb

No… that would do nothing. Look at the drawing… you reverse the start coil. Some motors make it easier than others… you may need to dig into the motor to determine which wires are which.

Or… just turn the motor around so it spins in the opposite direction :)

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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runswithscissors

2557 posts in 1858 days


#6 posted 07-14-2017 04:32 AM

I got a no-name motor off CL for the same purpose you have in mind. I asked the guys at the motor shop, and they said, “Nope, can’t be done.” That doesn’t mean yours won’t, though.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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