How to change the Rotation of a Non-reversible Motor

[@alchemy1]

I don't know to laugh or to cry. You just solved my problem. My motor after I put it together ran backwards. 🙂. I have been talking to myself for hours.

[@scroungasworkshop4663]

Mate, that was exactly what I needed as I have a hvac motor and fan that I need to reverse. I had no idea it was that easy so I will be doing that first thing in the morning. Thanks heaps, Stuart 🇦🇺

[@JaydenLawson]

You have no idea how happy I am to find this video! Had pulled apart a little desk fan that was stuck. Cleaned it and put it back together, unaware that I had put the shaft in the wrong way, causing the blade to run backwards. Not knowing anything about the different types of motors, I found all kinds of advice on how to reverse the direction of a motor. This solved my exact problem without the need of rewiring anything (which I think would not have worked anyway, from what I read). Thanks! :D

[@MrOldvery]

You are actually correct. If you look at a double shafted motor, one end is CW rotation and the other end is CCW rotation. So when you reverse the rotor and shaft, you will have the opposite of the original rotation. However, most PSC and shaded pole motors do not have symmetric spacings internally which means the rotor will be misaligned with the stator. This will result in reduced motor performance and can allow contact of the rotor endrings with the coils which will permanently damage the motor. Thus this would not be recommended as a general practice to reverse a motor.

[@Im-a-machine]

Hot diggity dam!!!! Thank you so much for this video!! I just had to replace my hvac fan motor. I put it back exactly like it came apart, yet the fan rotation was wrong. Then I found your video. My replacement fan motor looks almost identical to the one you're using in this video. So I did exactly what you said to reverse the motor rotation, then put it all back together again and it's working perfectly!! I couldn't say thanks enough, it just saved me several hundred dollars.

[@MrOldvery]

Michael Bolton is exactly correct regarding rotor and stator misalignment. Another concern is the possibility of the rotor endring striking the coils. While some motors are designed to be mechanically reversible, with symmetric spacings internally, most are not. This would not be recommended as a general practice to reverse a motor. I designed much of the PSC and shaded pole lines for one of the major manufacturers for 37 years as well as continue to be a member of several UL and CSA motor safety committees and frankly know what I am talking about.

[@albertovasquez7598]

Great video. this worked perfectly for me. mine was a 3 wire application so there was no 4th wire to do simple reverse with the wire method. so this was the only way thank you for making the video. spread the knowledge. thank you sir.

[@LarsonFamilyFarm-LLC]

Thank you so much for your video... the operation was a success on my HVAC motor rotation reversal....you saved me!!!

[@owlbear793]

My application was with a condenser fan which I re-purposed as a shop fan. I built the box frame and motor mount before I realized it pushed air through the back of my box. (Its a long story as to how the motor is mounted in the outdoor condenser unit to pull hot air out of the unit...) This was a 240 volt single phase, so the comments about reversing the poles did not make any sense. I invested the minute and a half to see how this was done and it sure worked for me. I had the clockwise rotation reversed in 15 minutes blowing air from the back of my box after I remounted the now turning counter-clockwise motor. I agree: if you're going to submit a video about reversing a non-reversing motor, you should use one that doesn't reverse...the extra wire fiasco was distracting. Regardless, thanks for the guidance.

[@freshranger]

Thank you for sharing. Worked for me on my pool heater. Put it all together and sob if the fan was spinning wrong. Flipped it around like you said and boom blowing air.

[@p.schulte2466]

Thank You! You just saved me a ton of money. I was about to purchase a reversible motor because my fan was spinning the wrong way. I just fixed my motor and my AC now works properly. Again, Thank you!

[@compu85]

Thanks for this tip! I was just able to reverse a small 115v motor for a dehumidifier fan.

[@marinelifer1752]

Why did your reverse the dehumidifier fan?

[@picazo456]

Thanks for this awesome tip, you saved me time and money. It worked like a charm...

[@davelongmore4384]

Yeah!!!! Thanks for helping me fix my problem. I bought a new a/c fan motor that was set going the wrong direction.

[@davelongmore4384]

Thanks again. In 5 minutes I did exactly as you did & tested it & the fan works perfectly -- in the opposite direction . Life saver. Boo-Hoo to all those nay-sayers. Yes, some motors will not allow this reversal but mine did!

[@homermago100]

This helped out a bunch was in a bind and I was way behind. The only issue I had was the wiring fitment but some zip ties helped

[@MRlebellion]

You just made an apprentices day thank you

[@jayjaykingbee5566]

Picture and analog clock on the wall that has a glass pane in front and a glass pane in back and the numbers and minute and hour hands were just kind of floating in between the two panes. Now take the clock spin it around and view it from the backside, NOW IS IT going clockwise or counter clockwise, its still going in the same direction but the orientation has changed so it appears to be going counterclockwise.

[@fisharmor]

It's so obvious. Thanks, you just saved me a bunch of money.

[@craigdaubbeats-rapinstrume9185]

If the motor I purchased just says clockwise on the purchase page, does that mean it's clockwise on the shaft end or the lead end? It didn't specify. I just assumed it meant on the shaft end.

[@Ageehvac]

Thanks I needed this one

[@luillossss]

Thanks of you , i fix my problem, since now for me you are the Air Conditioner God, with hair on the chest, size 14.5 on shoes, the super saiyajin level 4 . My master … out of any joke thanks you . I safe lot money because of this video , everyone says is impossible and i need buy one new fan

[@nextellcup8]

hey thanks for the video, just did it on two ac motors and worked . thanks

[@judithguarneros2672]

Thank you for your video, and advice it really worked. We had to make some small modifications after switching it, but it worked just fine.

[@CraftwerksMC]

so I know this is an older video but I tried this and I still need the shaft to exit to a squirrel cage and after putting it back together it still rotates the same direction. Is there something I should have done differently?

[@btknowlton]

Kevin, The motor pictured IS A REVERSIBLE MOTOR. this tutorial shows you how to change the rotation of a NON-REVERSIBLE MOTOR in an emergency (walk in freezer on a restaurant, etc) until the proper motor can be installed.

[@dr.fernandodelarosaricciar362]

Best solution so far

[@normandofranca5430]

Nice video, helpful , thank you.

[@rodneyreed1027]

When you do this. What’s the problem when the motor feels really hotter than normal when it run for about two hrs.

[@wormmy]

I tried this, an some spacers fell out from both ends and have no clue how they went. So know my motor humms but doesn't start it's a 220 AC Motor.. please help me!

[@Scottie1152]

Have a motor exactly like the one he’s using except not reversible. I did exactly as he did and swapped ends. It runs just fine but didn’t change direction at all still rotates exactly the same.

[@CTFxFROGGY]

Thank U, I'll try it when I get back from the bush, :) I got a pig Spit I changed it to a Fishing Rod Turner, so as I can Varnish put new Fiji hi speed Runners on my 14" one piece ron, but the motor turns the wrong way, when I saw ur Vid I was so happy, hope it work, DownUnder I'm very close to the South Pole lol Australia haha thank u again, let u know how it goes

[@Highnz57]

Will this work on a plunge router motor? Got one that runs backwards. Maybe the manufacturer put it together wrong?

[@waltleon3480]

I'm trying to figure out how to reverse the rotation of my kitchen exhaust fan but it has a plug and I can't figure out how to do it

[@jeremyvoshage2410]

Love the advise but it might have been a good idea to reshoot the video. The moment at 1:25 was priceless.

[@adambomb5055]

Jeremy Voshage

[@ssvpatan2145]

What is the problem if mixer grinder is running reverse how can we solve it

[@dwaipayandattaroy9801]

Polarity {+( +- )-} this is for clockwise and { -(-+)+} for reverse rotation . ( ) is the the magnet covered by solonoid type thing that rotates and { } are the coils external on the magnet !

[@cheath8705]

This suggestion will only work if the stator is in the middle. Several motors I've encountered had an offset stator which is closer to either the front or back. Switching around the armature can get so far offset from the stator that it may not even function.

[@zackvannieuwenhuizen]

It worked for me !!!!

[@alikadhem3713]

Thanks for the information

[@VCCNC]

Saved my bacon with the wife. Bought a fan that was going the wrong direction for what I needed it for and now all is well!!

[@georgequintas459]

Thank you. Very vise.

[@logowatchman]

Thank you!

[@Z-Ack]

Couldnt you have left the bolts in and just put the motor on the other side?

[@Ph0t0bug]

Can ANY non reversible motor be reversed.... I have looked online until Im blue in the face and I am just trying to find out if all non reversible motors can in fact be reversed in some way.... Also what would happen if a non-reversible motor was wired backwards, like a single phase motor... would the motor just not run, would the motor burn up....I know there are lots of qualifications to my question but looking at your video it seems you know a quite a lot about electric motors.

[@motoblur6]

It worked but for only about two minutes before it shut off again and just made noise. I disconnected power and tried again with the same result.

[@FATBOYROY4370]

Thanks for that idea

[@rajasinghams]

super cool , thanks

[@mr.emadus4571]

thank you very much

[@glenhartnett8125]

nice thank you

[@whataheadache...8753]

in a reverseable motor you can switch the 4 rotation leads around in a directional motor you cant just switch the wires moron wont spin full speed and will over heat and trip the over load or burn the windings up but you can flip the stator around as show in the video

[@arularul720]

rotor change pana mudelana EnnA pandrathu fan irrunda eappade

[@dwaipayandattaroy9801]

Duhh ! Tell me the motor rotation reversal, not like holding a clockwise moter head down to make it counter clockwise

[@ionelpascu1778]

If it's a shaded-pole motor you do that. It's not called an unreversable motor. This typer of motor, shaded-pole is the only one where you have to physically reverse the rotor inaide the stator. The rest of them that are 3 phase you just interchange any two leads of the 3 phase source.

[@kraigkearns1527]

That will not work to reverse the rotation counter clockwise to clockwise. The only thing you accomplished accomplished by doing that was moving the wires closer to the shaft.

[@roblc6]

THIS DONT SOUND TO REAL TO ME. IF THIS WAS SO TRUE YOU COULD OF USED A MOTOR WITHOUT REVERSAVLE LEADS AND ACTUALLY DEMONSTRATING THIS AWESOME TRICK ACCORDING TO YOU .

[@jayjaykingbee5566]

this is for you SERGIO. it IS a reversible motor ELECTRICALLY because he can just reverse it by swapping two of the wire leads thus changing the polarity +/- to -/+ he is choosing not to do that. by ignoring the wire leads altogether he is essentially making it ELECTRICALLY a non-reversible motor. So instead, he is changing the direction MECHANICALLY by changing which side the shaft is on . the actual rotation of the stator is still the same but the orientation is now flipped.

[@rayford21]

Jay H. Switching the source voltage leads will NOT change motor direction. The motor direction is determined by a start winding or capacitor which momentarily introduces a false second phase magnetic field 90 degrees out of phase with the source current. If the false field is 90 degrees the motor turns in one direction; if it's 180 degrees it turns in the opposite direction. If the motor has a start winding, reversing the leads TO THE START WINDING will change the motor direction. FYI: Before you remove any through bolts to a motor be sure you make witness marks at one inline location on each end bell (case covers) AND both case ends. Lining up all 4 of these marks makes it easy to reinstall your through bolts.

[@biblebloopers946]

Why does this video have so many dislikes?

[@dougb8490]

Fail!

[@890slay]

This is bullshit. You could just switch the wires without dissembling the motor.

[@pickford7812]

Try it out. You just made an ass of yourself

[@890slay]

+Mike Pickford You should try it- it works regardless if my asshood.

[@pickford7812]

+bombdoghandler on a single phase ac motor it will not. on a multi phase or DC it will work

[@890slay]

+bombdoghandler It works. You should hire professional help if you're not really familiar with electrical stuff, though- it's dangerous.

[@JaydenLawson]

I read somewhere that reversing the polarity of a certain type of motor does nothing. I'm not sure if reversing the polarity to the capacitor does it though.

[@Zackshacks717]

yes this is bullshit do not do it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@karthikesan1716]

why

[@Aquadogbone]

Thank you!