You are the best motor engineering and physics teacher I've ever encountered.I have worked in theater and film/tv as an electrician for 40 years. I've tried to learn theory of electricity and motor control as part of my professional development. You are the BEST resource on the internet for straightforward, concise, and lucid explanations of theoretical and practical information!
I don't know if this might help you but thought I'd let you know this. I've been trained and have been in the hvac/r and electrical fields since 1987 and the way we find the common, run and start are by checking ohms. The highest ohm reading is always between the start and run windings, the lowest ohms is between common and run windings . If you want to check what kind of shape the windings are in then After getting all these ohms readings if you add the 2 lowest ohms together they should equal the highest ohms reading. If they don't equal out then there's a problem in the motor windings that may cause a failure very soon. This way is used in checking a compressor on a heating/cooling unit but should also work on motors since the compressor is just a motor also. Take care
I find myself coming back to your videos over and over for two reasons when I need practical implementation information 1. You address the needs of someone teaching themselves and 2. Your explanations are very well articulated. I think the fact that you taught yourself keeps you focused on the real world which is very valuable. People who are formally educated are often good at delivering theory but fall short in practical application. I highly recommend your videos to anyone who needs to actually get things done.
I found a compressor - 21 Gallon 3/4 HP - Craftsman...After watching your video I replaced the capacitor. dressed up the motor switch. And I saved it from the dump and its inow in service in my rear pole barn. Thanks for the videos!
Getting back to basics- I love it. About 10 years ago, Bill Mayo, a Shopsmith rebuilder in Florida, showed me how to take a Shopsmith headstock motor apart & connect a DPDT switch to have both forward & reverse motor rotation. Kinda like surgery. Like you mention, simply looking for the thinner wires made it easy to locate the starting winding. After the first one, only took 15-20 minutes to do. Bill had spent some time in a motor rebuilding shop. Not sure if they even exist anymore. Thanks for sharing.
Sir let me tel you a short story, you are exactly like me, i work on 2 motor shops on my life,for about 20 years ,i love motors and generators ,but a"m retiring know but i have so many motors in my house ,,,(all kind motors ,DC ,AC SINGLE PHASE, 3 PHASE, all sizes etc,etc and i can not resist play whit motors, even before i start watch this video i play whit a setup G M (MOTOR GENERATOR ) i have in my basement just to see this babies runing on the bench , let me say that,,,,, you are very smart person and a good teacher ,you know what you are doing,tanks for teaching this stuff the right way , i can see you love motors like me ,good bless you end enjoy teaching ,TANKS
Fascinating. Very well made, and a lot more logically explained than most videos I see. Having basically no prior knowledge about motors, I'm finding your tutorials very helpful. Thanks.
Jeremy You do amazing work. You make really complicated things very simple. You truly understand what you are teaching as Albert Einstein said "If you can't explain it simply, you don't understand it well enough." Thanks!
Looks like you watch about the same stuff that I do ! Also seems like you're doing a lot of the same things that I've done, twenty years ago ! I've always hated wasting anything so would salvage most if not all of parts for my project. I didn't have the Internet for information at the time so you are lucky to have that now. You have good content and are growing your channel so keep it up, like it's said " If you build it, they will come " Thanks for sharing and take care.
I bought a bunch of motors at an estate auction. Three washing machine motors, a couple beefy old induction motors with capacitor on top, a big 220v motor, one with a gear reduction, and a big variac that they thought was a motor. All that went as one lot that no one else bid on, so I got it for $1.
I have been subscribed to TPAI before finding your channel. Funny part is I found your channel as a recomendation after watching one of his videos. Have an awesone day! :)
Very good man, very good. You show the common sense practicality that stupid people like me run into...like where the terminals are in relation to the main known common wires. You know how sometimes they talk about red yellow and blue and green and orange with white but then there are other red and black wires and you get confused on which one it is exactly. You showed the location and how it relates to why it is located in said position. You very samrt guy!
You make very good videos. They are clear, concise, and well presented. You often recommend that viewers research subjects on their own to wake up that creativeness inside them. Your videos are useful and just fun to watch. Keep going!
I just started watching ur videos and i find them very interesting. Im not into this kind of stuff but i must be honest and admit that u have helped me in so many ways and in helping me use this type of application in motor vehicles. Im a gear head and u would be surprised on how i used ur ideas and methods in cars. So i want to thank u and say keep up the good work and keep enlightening us with ur intelligence. 👍✌️
Jeremy- I knew you would save me. I bent the shaft of a Harbor Freight band saw and put on a craftsman motor I had only to find it went the wrong way. I went right to you for this video and presto! You're like some motor savant or something. You know your shit. Thanks so much for sharing your knowledge. Ron
Thank you for this explanation of how to reverse the direction of motors. I didn't even know for sure if it was possible without rewiring the motor. I made a mount for a motor onto a meat grinder. Once it was all hooked up, the grinder spun the wrong way. 😢 I didn't want to re-mount the motor to where it would be hanging off the back. My motor says on the tag to switch the red and black wires to change CW/CCW. Easy! Thanks
This makes perfect sense. Thanks. I have the diagram for my lathe motor, but I cant read it for the life of me. My head don't work that way.. But Thanks to you I can figure it all out with a multi meter. :D
First off, very good video. I've watched several and you are very good at explaining complex concepts clearly. I would like to add some input to this video. Motor direction, unfortunately, is not standard across all manufactures. NEMA, National Electrical Manufacturers Association, states that motor direction is determined from the non-shaft end, but many manufacturers state rotation from the shaft end (like you are doing in this video). In an effort to clear up any confusion, some manufacturers are now stating CCWSE meaning counter-clockwise from the shaft end or CCWLE meaning counter-clockwise from the lead (non-shaft) end. I truly only point this out to hopefully help those who may get confused by motor direction as stated by the manufacturer. Again, you do a very good job with your videos. I look forward to more in the future.
My source for maintaining this view support.industry.siemens.com/cs/document/60605536/defining-the-direction-of-motor-rotation?dti=0&lc=en-US. I am not aware of NEMA having a different reference
Jeremy, NEMA MG-1-2016 Rev 2 Para 14.6 - Direction of Rotation - ...the standard direction for dc motors and single phase ac motors is counterclockwise, when viewed from the lead end of the motor. (the lead end is defined as opposite the shaft end of a motor)
You're awesome, Jeremy. This was very helpful. I need to reverse the rotation on an attic exhaust fan and for some reason can't find documentation or a diagram online. Thank you!
Thanks for putting in the work to make these videos. The extra effort like mounting the exposed universal motor to better show its construction definitely helps. I look forward to both more of this series and more of the ways you deal with writing in a small space.
I think this video might have answered my question about reversing rotation on my drill. Now I have to figure how to wire the DPDT switch to do it manually. Thanks Jeremy
Please keep them coming. Very excited for a whole series on your new, industrial robot. Reverse engineering, episodes on individual smart design/engineering elements, maybe a while Jarvis 2.0 where you simply reproduce the giant with considerations/adaptions for its smaller stature.
Jeremy, Love your channel and I greatly admire your work. I have a situation which I suspect a significant portion of your subscribers may find themselves in. Long story short, I bought a lathe to use in my garage. I converted the 3-phase motor to run on single phase 220 volt power using a Static Phase Controller. It works great but only in one direction. However, the 3-position drum switch no longer works. When I start it, the motor (and chuck) only rotates in one direction. The drum switch doesn't change anything. I have found online wiring diagrams on converting 3-phase motors to single phase 220 volts. I have found wiring diagrams for drum reversing switch's on single and 3-phase motors. But I have not come across the wiring diagram for my particular situation. Other details that may help you. 1. SPC: Phase-A-Matic PAM-300HD static phase converter. 2. Motor: Century brand Squirrel-Cage Induction Polyphase Motor (1.5 HP, model number SC-184-FC4-7). 3. Drum switch: 3-position, Cutler-Hammer Forward-Off-Reverse lever-operated switch. 4. Startup switch: A circuit box equipped with a green start button and a red emergency shutoff switch. 5. Magnetic Starter: GE CR306 Magnetic Starter (NEMA size 00) Let me know if this is something you would like to address. Sincerely, Bill
Thanks for the great video and the very generous links to other great motor video. I keep adding your motor videos to my reference playlist. Love your channel.
Great Videos! You really should make one showing how to build an electric motor, where the theory applies to any size build/application. Show things like where to get bearings that the shaft spins on, what type of wire to use, what type of shaft is used to make it and where to find it.. etc..I like your videos. keep up the good work!
Thank you so much for this for this video! I've been a subscriber for awhile and have watched all of your motor posts. Today I finally fitted an old Leland motor to a very old grinder. After being really proud of myself I turn it on and saw that it was rotating the wrong way. My first thought was to Jeremy. I re-watched this video, found how to get into the motor and then changed the polarity on the start windings. It works like a charm. Thanks again.
where is the capacitor in the first induction motor in this video? is it built into the motor? I have a DPH224L01 I pulled out of an electric dryer, but I'm having a hard time figuring out how to reverse its direction. Does the capacitor have anything to do with changing the direction? I feel like I have tried to switch all of the leads, but its spins the same way.
That was a light bulb moment (!) for me: spinning that motor up by hand instead of the start winding and then changing its direction. I'm a pretty experienced workshop guy, I guess - but electrical gear always seemed a bit impenetrable and frightening. Not anymore. Thank you so much.
One thing to note on reversing dc motors.. DC motors have brushes and commuters that the brushed ride on. When it gets used to being run in one direction the brushed get worn a certain way. Reversing that DC motor is rough on the brushes and the commutator. It would be a good idea if you need to reverse a DC motor, to start with fresh brushes. Also note that new brushes usually need to be "worked in" without a load on the motor, for a certain amount of hours - Run the new brushes without a load so you can see that they have worn down to form the curve of the commutator. This enables the brushes to take the full current of the motor.
Thanks, Jeremy, for answering my question of 2 days ago and going to the trouble of adding the link. Sadly it is of no help, it being a much larger capacitor start motor, (mine has no capacitor) and also it has the wires all accessible externally. 220 or 110v - the procedure would be exactly the same, I imagine. Thanks again for trying, but I'm now resigned to further searching to try to find the way to get this motor reversed. Maybe I'll dismantle the motor and mess about with the field coil wires inside......
Ha, got the same tach yesterday - thanks for the info, this will be useful in my wiring troubles to bring it back into use. I haven't been able to solve the runaway velocity problem yet - still busy restoring me old lathe
Excellence is a pleasure to behold and gains indescribable qualities when said excellence imparts current and enduring value to the witness of said excellence. 'Nuff Said.
Thank you for your instruction. I know nothing about A/C motors, but I've come across a large industrial fan. Some DYI person added a one phase motor to it. Looks like an old dryer motor (like the gray one on your left). The motor runs in the wrong direction and blows air out the back. I tried reversing the fan, but it worked the same. I'll take the motor off and try your suggestions. Thanks again.
Maybe unrelated, or maybe subject for a different video, but why are vacuum videos so noisy. It is like universal. Call it a vacuum motor and it will be noisy. Is there anything a body can do to make them run quieter? Thank you Jeremy for all your excellent YTs. You are an amazing teacher.
another great video. now I have to start looking for motors. Looking forward to #3 way to rock your channel you've got almost twice the subscribers as Grizzly.
I am needing to do exactly what you did on the first motor. I replaced the washer motor and it was spinning counterclockwise instead of clockwise. I will try this in the morning.
Do you have any videos on how to test AC & DC motor winding ??? also how would you put together a resistivity meter for underground surveys ???. really enjoy watching your videos . Thanks.
Hello sir,,, thanks for your time. I've got a craftsman table saw motor that's shot.. I've got another motor to put on it but it says it's not reversible I need it to go clockwise. But this motor is ccw.. can it be done?
picked up a leaf blower motor very powerful, used a speed controler on it as its controler was not very good, i tried just reversing the power supply to reverse the spin but it did not work, will try reversing bush wires tomorrow, my speed controller off ebay is like yours and is full throttle at about 60-80v , is there a better way to properly control it in finer adjustments. Thanks
Great videos. I would warn people about using vacuum cleaner motors though; they overheat in just a couple of minutes at full speed unless you've got a heck of a lot of air flowing through it.
Hi Jeremy great video thanks, I am trying to reverse to rotation of my capacitor start 1 1/2 Hp single phase motor. I got the motor to spin in the reverse direction when not under load but as soon as i install the belt for the table saw it wont start and makes a loud humming noise. Any ideas? Thanks again for the videos
Hi Jeremy. I have another question for you. How do I wire a 2 NO 2 NC rotator selector switch to act like a DPDT toggle switch (to reverse my dc motor direction)? I’m having trouble finding information of this sort. Thanks, Paul
this is absolutely brilliant mate, how can I SUBSCRIBE 1,000 times, ha ha, question for you during the BONUS TEACHING MOMENT how are you recreating the hum, you taught us that it's due to a faulty capacitor, so are you just omitting one? in other words the momentary switch is keeping it off until you press it?
I found a 1/8 hp fan motor and built a tiny table top belt sander out of it. For a while it was fun running it either way without the capacitor by hand cranking it but decided for convenience to install the recommended t wire cap. The problem is that I wired it in per the schematic on the face plate but now it only runs the opposite way that I need it to. Advice?
I came into two Bodine gearmotors (NSI-54RL and NSI-33R). My main question, how do I wire the 54RL so I can utilize the F&R function via toggle switch like you have on your lathe. It has two Blue wires and two black wires. Thank you
Jeremy, I have a Vornado box fan that I want to replace the power cord on. I started this quite some time ago, but due to medical reasons, I had to leave this for a while. Currently, all my markings as to wire connections are now missing. Vornado will not provide a wire diagram,. Can you help?
Not sure if a question on this old a video will find you - but for the first motor where you demonstrated how it was simply a matter of switching the starter circuit wires around to reverse the direction of rotation, is there a specific type of switch you could put in line to do this for you? if so what are they called? - I have a belt grinder that it would be great to change the direction of rotation at the flick of a switch.
I have a motor removed from a brushed A/C powered chainsaw that I'd like to run on D/C in both forward and backward directions, only issue I'm having is the motor only has 2 wires. No starting coil. So When I apply DC Voltage in either polarity it always kicks off in the clockwise direction. Is there anyway I can make it behave the way I want it to, or is this motor just not suitable for my needs?
Cool video, what would you use to slow the speed of say a floor/room drying fan. Permanent applications. Since ur not fond of the Harbor freight one. Tim in Omaha Nebraska
I just recent;y acquired a couple of 2 speed swamp cooler motors. Both are induction motors and I would like to reverse them. Do you know if it's possible with 2 speed motors?
Your professionalism and clear information delivery and clean language use is refreshing and enlightening. Thank you, blessings, and keep it up!
Thank you
7 years later and you're still helping people. My sincerest thank you from an amateur mad scientist.
You are the best motor engineering and physics teacher I've ever encountered.I have worked in theater and film/tv as an electrician for 40 years. I've tried to learn theory of electricity and motor control as part of my professional development. You are the BEST resource on the internet for straightforward, concise, and lucid explanations of theoretical and practical information!
+Joe Ros Burns thank you!
here here
I don't know if this might help you but thought I'd let you know this. I've been trained and have been in the hvac/r and electrical fields since 1987 and the way we find the common, run and start are by checking ohms. The highest ohm reading is always between the start and run windings, the lowest ohms is between common and run windings . If you want to check what kind of shape the windings are in then After getting all these ohms readings if you add the 2 lowest ohms together they should equal the highest ohms reading. If they don't equal out then there's a problem in the motor windings that may cause a failure very soon. This way is used in checking a compressor on a heating/cooling unit but should also work on motors since the compressor is just a motor also. Take care
I find myself coming back to your videos over and over for two reasons when I need practical implementation information 1. You address the needs of someone teaching themselves and 2. Your explanations are very well articulated.
I think the fact that you taught yourself keeps you focused on the real world which is very valuable. People who are formally educated are often good at delivering theory but fall short in practical application. I highly recommend your videos to anyone who needs to actually get things done.
Precisely explained!! I got the answer for the question I was looking for for 2 days! Awesome, I owe you!
I found a compressor - 21 Gallon 3/4 HP - Craftsman...After watching your video I replaced the capacitor. dressed up the motor switch. And I saved it from the dump and its inow in service in my rear pole barn. Thanks for the videos!
Found your channel while surfing. I am now a subscriber. I love great teachers like you.
Getting back to basics- I love it. About 10 years ago, Bill Mayo, a Shopsmith rebuilder in Florida, showed me how to take a Shopsmith headstock motor apart & connect a DPDT switch to have both forward & reverse motor rotation. Kinda like surgery. Like you mention, simply looking for the thinner wires made it easy to locate the starting winding. After the first one, only took 15-20 minutes to do. Bill had spent some time in a motor rebuilding shop. Not sure if they even exist anymore. Thanks for sharing.
Sir let me tel you a short story, you are exactly like me, i work on 2 motor shops on my life,for about 20 years ,i love motors and generators ,but a"m retiring know but i have so many motors in my house ,,,(all kind motors ,DC ,AC SINGLE PHASE, 3 PHASE, all sizes etc,etc and i can not resist play whit motors, even before i start watch this video i play whit a setup G M (MOTOR GENERATOR ) i have in my basement just to see this babies runing on the bench , let me say that,,,,, you are very smart person and a good teacher ,you know what you are doing,tanks for teaching this stuff the right way , i can see you love motors like me ,good bless you end enjoy teaching ,TANKS
Fascinating. Very well made, and a lot more logically explained than most videos I see. Having basically no prior knowledge about motors, I'm finding your tutorials very helpful. Thanks.
Jeremy You do amazing work. You make really complicated things very simple. You truly understand what you are teaching as Albert Einstein said "If you can't explain it simply, you don't understand it well enough." Thanks!
yeah, tell that to my college professors, ha ha
Thank you Jeremy! I just reversed a motor with these instructions so that I can use it for the old lathe that I got. I really appreciate what you do!
Thank you for saving me a lot of time with my project! Your delivery is excellent.
I like the way you explain how the motors works. You explain it simply so regular people can understand. Great video.
Thank you!
Again outstanding. I thought the speed of your explanations and depth of specifics was perfect in this video. Thank you so much!
As a electrician your video is a good refresher, I did motor control back when I was an apprentice back in 70s
I am more knowledgeable today than yesterday, thanks to you!
Looks like you watch about the same stuff that I do !
Also seems like you're doing a lot of the same things that I've done, twenty years ago ! I've always hated wasting anything so would salvage most if not all of parts for my project.
I didn't have the Internet for information at the time so you are lucky to have that now. You have good content and are growing your channel so keep it up, like it's said " If you build it, they will come "
Thanks for sharing and take care.
Ken Gamble then make your own video with something interesting.
I bought a bunch of motors at an estate auction. Three washing machine motors, a couple beefy old induction motors with capacitor on top, a big 220v motor, one with a gear reduction, and a big variac that they thought was a motor. All that went as one lot that no one else bid on, so I got it for $1.
it´s a robbery Sir !
I have been subscribed to TPAI before finding your channel. Funny part is I found your channel as a recomendation after watching one of his videos. Have an awesone day! :)
Very good man, very good. You show the common sense practicality that stupid people like me run into...like where the terminals are in relation to the main known common wires. You know how sometimes they talk about red yellow and blue and green and orange with white but then there are other red and black wires and you get confused on which one it is exactly. You showed the location and how it relates to why it is located in said position. You very samrt guy!
You make very good videos. They are clear, concise, and well presented. You often recommend that viewers research subjects on their own to wake up that creativeness inside them. Your videos are useful and just fun to watch. Keep going!
+JOHN GEBHART thank you John. This kind of comment is very helpful to future videos as well.
This advice is invaluable mate, I have been looking for you. Wonderfully explained and I now can say hi to the washing machine in the corner lol
I just started watching ur videos and i find them very interesting. Im not into this kind of stuff but i must be honest and admit that u have helped me in so many ways and in helping me use this type of application in motor vehicles. Im a gear head and u would be surprised on how i used ur ideas and methods in cars. So i want to thank u and say keep up the good work and keep enlightening us with ur intelligence. 👍✌️
I'm gonna have to watch this a few more times.
Jeremy great work ,you are very clear and easy to listen to and today I have learnt something new thanks
From down under Australia
good video.straight to the point and no distracting music.
It's criminal that your channel is not bigger.
Will O'Neill Dang right. I have yet to find better information on electric motors than what's here.
The bigger his channel gets, the less time he will have to do videos. :D
He'll be answering so many questions, he'll never get back to his shop!
:D
No it's criminal
it's criminal ,I don't get notified, been unsubscribed. it is definitely criminal.
This cat is one of the best teachers on you tube ,maybe the world.
Jeremy- I knew you would save me. I bent the shaft of a Harbor Freight band saw and put on a craftsman motor I had only to find it went the wrong way. I went right to you for this video and presto! You're like some motor savant or something. You know your shit. Thanks so much for sharing your knowledge. Ron
thanks! i dont know why others cant explain things as easy as you did! :) big help bro.
+jomatz tolentino thank you!
+jomatz tolentino thank you!
Came for info years later... thank you for your great work and knowledge share. Greetings from Costa Rica! Pura Vida
Thank you for this explanation of how to reverse the direction of motors. I didn't even know for sure if it was possible without rewiring the motor. I made a mount for a motor onto a meat grinder. Once it was all hooked up, the grinder spun the wrong way. 😢 I didn't want to re-mount the motor to where it would be hanging off the back. My motor says on the tag to switch the red and black wires to change CW/CCW. Easy! Thanks
thanks mate .. from Oz .. my son was putting an AC motor on a planer & found your video really good .. U DA MAN !! :-)
Great explanation,very clear and understandable! Keep up the good work!
Excellent video...this should be what I was looking for on a motor I'm wanting to change the rotation on! Thanks!!
Your presentation is great buddy, informative and easy to listen to, keep it up!
Than you. All sorted, Very very helpful!!!! Got 3 washing Machine motors to sort out. Regards from South Africa,
Just happened to come across your video and liked it so much that I had to subscribe.
You are a great teacher my friend.
This makes perfect sense. Thanks. I have the diagram for my lathe motor, but I cant read it for the life of me. My head don't work that way.. But Thanks to you I can figure it all out with a multi meter. :D
thank you for letting me know... that is awesome
First off, very good video. I've watched several and you are very good at explaining complex concepts clearly. I would like to add some input to this video. Motor direction, unfortunately, is not standard across all manufactures. NEMA, National Electrical Manufacturers Association, states that motor direction is determined from the non-shaft end, but many manufacturers state rotation from the shaft end (like you are doing in this video). In an effort to clear up any confusion, some manufacturers are now stating CCWSE meaning counter-clockwise from the shaft end or CCWLE meaning counter-clockwise from the lead (non-shaft) end. I truly only point this out to hopefully help those who may get confused by motor direction as stated by the manufacturer. Again, you do a very good job with your videos. I look forward to more in the future.
My source for maintaining this view support.industry.siemens.com/cs/document/60605536/defining-the-direction-of-motor-rotation?dti=0&lc=en-US. I am not aware of NEMA having a different reference
Jeremy,
NEMA MG-1-2016 Rev 2 Para 14.6 - Direction of Rotation -
...the standard direction for dc motors and single phase ac motors is counterclockwise, when viewed from the lead end of the motor. (the lead end is defined as opposite the shaft end of a motor)
You're awesome, Jeremy. This was very helpful. I need to reverse the rotation on an attic exhaust fan and for some reason can't find documentation or a diagram online. Thank you!
Thanks for putting in the work to make these videos. The extra effort like mounting the exposed universal motor to better show its construction definitely helps. I look forward to both more of this series and more of the ways you deal with writing in a small space.
I think this video might have answered my question about reversing rotation on my drill. Now I have to figure how to wire the DPDT switch to do it manually. Thanks Jeremy
you have opened a new world for me .thanks
You sir are why I do this. Thanks for letting me know.
Thanks for the videos. I have a home shop and all your videos help.
Please keep them coming. Very excited for a whole series on your new, industrial robot. Reverse engineering, episodes on individual smart design/engineering elements, maybe a while Jarvis 2.0 where you simply reproduce the giant with considerations/adaptions for its smaller stature.
Jeremy, Love your channel and I greatly admire your work.
I have a situation which I suspect a significant portion of your subscribers may find themselves in.
Long story short, I bought a lathe to use in my garage. I converted the 3-phase motor to run on single phase 220 volt power using a Static Phase Controller. It works great but only in one direction. However, the 3-position drum switch no longer works. When I start it, the motor (and chuck) only rotates in one direction. The drum switch doesn't change anything.
I have found online wiring diagrams on converting 3-phase motors to single phase 220 volts. I have found wiring diagrams for drum reversing switch's on single and 3-phase motors. But I have not come across the wiring diagram for my particular situation.
Other details that may help you.
1. SPC: Phase-A-Matic PAM-300HD static phase converter.
2. Motor: Century brand Squirrel-Cage Induction Polyphase Motor (1.5 HP, model number SC-184-FC4-7).
3. Drum switch: 3-position, Cutler-Hammer Forward-Off-Reverse lever-operated switch.
4. Startup switch: A circuit box equipped with a green start button and a red emergency shutoff switch.
5. Magnetic Starter: GE CR306 Magnetic Starter (NEMA size 00)
Let me know if this is something you would like to address.
Sincerely,
Bill
I'm loving this video series. I tend to buy air compressors with broken pumps. A great cheap source of high horsepower motors.
Thanks for the great video and the very generous links to other great motor video. I keep adding your motor videos to my reference playlist. Love your channel.
Great Videos! You really should make one showing how to build an electric motor, where the theory applies to any size build/application. Show things like where to get bearings that the shaft spins on, what type of wire to use, what type of shaft is used to make it and where to find it.. etc..I like your videos. keep up the good work!
I know nothing electrical but was assuming switch the two cables but wanted to double check. And lo and behold that is what was needed
Great job explaining. There is only so much you can learn from a book.
Thank you so much for this for this video! I've been a subscriber for awhile and have watched all of your motor posts. Today I finally fitted an old Leland motor to a very old grinder. After being really proud of myself I turn it on and saw that it was rotating the wrong way. My first thought was to Jeremy. I re-watched this video, found how to get into the motor and then changed the polarity on the start windings. It works like a charm. Thanks again.
Thank you for letting me know! That is so awesome.
Thank You for explaining some of this ... I am fairly clueless about these things.
Great video, Thanks. Clear instructions and easy to understand.
where is the capacitor in the first induction motor in this video? is it built into the motor? I have a DPH224L01 I pulled out of an electric dryer, but I'm having a hard time figuring out how to reverse its direction. Does the capacitor have anything to do with changing the direction? I feel like I have tried to switch all of the leads, but its spins the same way.
What a great video, learned so much.
Very helpful and clear video! Thank you. I am subscribing.
That was a light bulb moment (!) for me: spinning that motor up by hand instead of the start winding and then changing its direction. I'm a pretty experienced workshop guy, I guess - but electrical gear always seemed a bit impenetrable and frightening. Not anymore. Thank you so much.
One thing to note on reversing dc motors.. DC motors have brushes and commuters that the brushed ride on. When it gets used to being run in one direction the brushed get worn a certain way. Reversing that DC motor is rough on the brushes and the commutator. It would be a good idea if you need to reverse a DC motor, to start with fresh brushes. Also note that new brushes usually need to be "worked in" without a load on the motor, for a certain amount of hours - Run the new brushes without a load so you can see that they have worn down to form the curve of the commutator. This enables the brushes to take the full current of the motor.
New sub, like the way you explain things. Will be watching more of your stuff. Thanks for posting
Thanks, Jeremy, for answering my question of 2 days ago and going to the trouble of adding the link. Sadly it is of no help, it being a much larger capacitor start motor, (mine has no capacitor) and also it has the wires all accessible externally. 220 or 110v - the procedure would be exactly the same, I imagine.
Thanks again for trying, but I'm now resigned to further searching to try to find the way to get this motor reversed. Maybe I'll dismantle the motor and mess about with the field coil wires inside......
Ha, got the same tach yesterday - thanks for the info, this will be useful in my wiring troubles to bring it back into use. I haven't been able to solve the runaway velocity problem yet - still busy restoring me old lathe
Excellence is a pleasure to behold and gains indescribable qualities when said excellence imparts current and enduring value to the witness of said excellence. 'Nuff Said.
Sir have nice video explaination ...salamat sir..means thank you sir
Thank you for your instruction. I know nothing about A/C motors, but I've come across a large industrial fan. Some DYI person added a one phase motor to it. Looks like an old dryer motor (like the gray one on your left). The motor runs in the wrong direction and blows air out the back. I tried reversing the fan, but it worked the same. I'll take the motor off and try your suggestions. Thanks again.
Some very good information in this video. Good Job.
thank you for suggesting the channel
Maybe unrelated, or maybe subject for a different video, but why are vacuum videos so noisy. It is like universal. Call it a vacuum motor and it will be noisy. Is there anything a body can do to make them run quieter? Thank you Jeremy for all your excellent YTs. You are an amazing teacher.
Again- I learned a lot. Thank you very much for uploading Mr Fielding, and i think you believe in jesus, cause your videos are making me calm.
another great video. now I have to start looking for motors. Looking forward to #3 way to rock your channel you've got almost twice the subscribers as Grizzly.
wow thank you so much
I am needing to do exactly what you did on the first motor. I replaced the washer motor and it was spinning counterclockwise instead of clockwise. I will try this in the morning.
Have you tryed to wire a alternator off a car /truck to work as a motor? If not will you ? Thanks jim love your style of teaching thank you.
Do you have any videos on how to test AC & DC motor winding ???
also how would you put together a resistivity meter for underground surveys ???.
really enjoy watching your videos .
Thanks.
excellent vid Jeremy, I'll be back soon with my notebook! thanks for sharing.
Hello sir,,, thanks for your time. I've got a craftsman table saw motor that's shot.. I've got another motor to put on it but it says it's not reversible I need it to go clockwise. But this motor is ccw.. can it be done?
picked up a leaf blower motor very powerful,
used a speed controler on it as its controler was not very good,
i tried just reversing the power supply to reverse the spin but it did not work, will try reversing bush wires tomorrow, my speed controller off ebay is like yours and is full throttle at about 60-80v , is there a better way to properly control it in finer adjustments.
Thanks
Great videos. I would warn people about using vacuum cleaner motors though; they overheat in just a couple of minutes at full speed unless you've got a heck of a lot of air flowing through it.
I gave this video a "thumb up", but please emphasize more on disconnecting before touching wires !
Jeremy, great video, how do you add a switch that will allow you to reverse the motor without switching the wires?
Very very beautiful video thanks
Hi Jeremy great video thanks, I am trying to reverse to rotation of my capacitor start 1 1/2 Hp single phase motor. I got the motor to spin in the reverse direction when not under load but as soon as i install the belt for the table saw it wont start and makes a loud humming noise. Any ideas?
Thanks again for the videos
Hi Jeremy. I have another question for you.
How do I wire a 2 NO 2 NC rotator selector switch to act like a DPDT toggle switch (to reverse my dc motor direction)?
I’m having trouble finding information of this sort.
Thanks,
Paul
this is absolutely brilliant mate, how can I SUBSCRIBE 1,000 times, ha ha, question for you during the BONUS TEACHING MOMENT how are you recreating the hum, you taught us that it's due to a faulty capacitor, so are you just omitting one? in other words the momentary switch is keeping it off until you press it?
I found a 1/8 hp fan motor and built a tiny table top belt sander out of it. For a while it was fun running it either way without the capacitor by hand cranking it but decided for convenience to install the recommended t wire cap. The problem is that
I wired it in per the schematic on the face plate but now it only runs the opposite way that I need it to. Advice?
I came into two Bodine gearmotors (NSI-54RL and NSI-33R). My main question, how do I wire the 54RL so I can utilize the F&R function via toggle switch like you have on your lathe. It has two Blue wires and two black wires. Thank you
You good teacher brv
Jeremy,
I have a Vornado box fan that I want to replace the power cord on. I started this quite some time ago, but due to medical reasons, I had to leave this for a while. Currently, all my markings as to wire connections are now missing. Vornado will not provide a wire diagram,. Can you help?
Super videos Jeremy. Well done! Thank you.
Very good video through in showing
Not sure if a question on this old a video will find you - but for the first motor where you demonstrated how it was simply a matter of switching the starter circuit wires around to reverse the direction of rotation, is there a specific type of switch you could put in line to do this for you? if so what are they called? - I have a belt grinder that it would be great to change the direction of rotation at the flick of a switch.
thank you very much, i had all my answers from your video
That is awesome! My job here is done
Just subbed and lovin the channel. Thanks for the clear descriptions :)
I have a motor removed from a brushed A/C powered chainsaw that I'd like to run on D/C in both forward and backward directions, only issue I'm having is the motor only has 2 wires. No starting coil. So When I apply DC Voltage in either polarity it always kicks off in the clockwise direction. Is there anyway I can make it behave the way I want it to, or is this motor just not suitable for my needs?
Love this stuff, right up my alley. I only have five welders.
Cool video, what would you use to slow the speed of say a floor/room drying fan. Permanent applications. Since ur not fond of the Harbor freight one. Tim in Omaha Nebraska
I just recent;y acquired a couple of 2 speed swamp cooler motors. Both are induction motors and I would like to reverse them. Do you know if it's possible with 2 speed motors?