Just want to say THANK YOU for this video. I spent ALL DAY trying to figure out an electrical actuator I removed from my truck and couldn't figure out why it wasn't working. I watched your video and realized I didn't re-install the brushes into their pockets and now the motor is working 100% and you saved me $1200.
Great explanation. I have an old B&D Grinder that suddenly started buzzing and got stuck. When its off it rotates but when I turn it on in magnetized and locks in place. I’ll try changing the brushes if I can find any.
Motor theory without experience is like reading a book on how to play baseball but never actually hitting a ball or throwing one. No substitue for experience. I read a book on how to play the guitar and found that after reading the book I was terrible at playing. A kid down the block never read one book yet plays guitar with ease.
Great Video. I dont know why the world just throws thins away Please help with table saw motor RM827. Two of commutator bars are raised, thought maybe new brushes would fix it. If a resistance pattern to follow maybe i could do some solder trick. What Now?
Just recently bought a set of Milwaukee tools with brushless motors. These brush motors have served me well for years but I like the fact that there's less moving parts/less heat, and my understanding is that they should have more life...and help conserve battery life.
The rubbing of the brush to the copper would create ultrafine particles the could get into the air and get inhaled into the lungs. Certainly not to healthy, especially if used in a fan that moves air. Are induction motors brushless?
Thank you. Good work sirI have a question pls, I have a black and decker super sweep 8422, the problem is when I switch on it makes sound and it's stuck I tried to push the fan it didn't move at all but when I switched off I can move the fan very easy, I can record a video and upload it to watch it for more explanation it you want, I feel u have a great experience in this field.Thank and I hope u can help
This unit uses ball bearings. One of them may have lost its balls. You can replace the bearings, either from the factory or from a bearing shop. Hope this helps. GFM
These motors also can run at very high speeds, tens of thousands of rpm for some types. A vacuum cleaner motor may spin 10,000 rpm, allowing a small fan to produce powerful suction. A router may run at 25,000 rpm no load speed. Can’t run that fast with induction motors that are limited to power line frequency, usually 1725 or 3450 rpm.
Just want to say THANK YOU for this video. I spent ALL DAY trying to figure out an electrical actuator I removed from my truck and couldn't figure out why it wasn't working. I watched your video and realized I didn't re-install the brushes into their pockets and now the motor is working 100% and you saved me $1200.
That was a pretty decent explanation for the layperson. Ty
Welcome
GFM
OK so I've a stuck brush I assume the armature is also damaged. Your video is very helpful. You are a king of RUclips 🤣
Awesome video, I learned a lot, thanks for posting it!
Great explanation. I have an old B&D Grinder that suddenly started buzzing and got stuck. When its off it rotates but when I turn it on in magnetized and locks in place. I’ll try changing the brushes if I can find any.
Thanks for the info. I have learned that the more I know, the less I pay and can do the job myself.
Thanks, it's very hard to imagine this stuff from books, I have forgotten a lot of my college motor theory, keep up the good work! All the best
Motor theory without experience is like reading a book on how to play baseball but never actually hitting a ball or throwing one. No substitue for experience. I read a book on how to play the guitar and found that after reading the book I was terrible at playing. A kid down the block never read one book yet plays guitar with ease.
Thanks for this. I'm trying to fix a brush shower motor, so real useful to understand how it works :D
Excellent explanation! Thanks!
Thanks your video really helped
Question GFM Does the computator originally have a wide groove in it for the brushes or is it originally flat and the brushes wear into it?
Great Video. I dont know why the world just throws thins away Please help with table saw motor RM827. Two of commutator bars are raised, thought maybe new brushes would fix it. If a resistance pattern to follow maybe i could do some solder trick. What Now?
New motor.
GFM
Just recently bought a set of Milwaukee tools with brushless motors. These brush motors have served me well for years but I like the fact that there's less moving parts/less heat, and my understanding is that they should have more life...and help conserve battery life.
Very nice video. Thank you.
GREAT VIDEO - how can i tell if my brushes need replacing? i have one of these motors in my disabled scooter.
You will need to remove them to check. If they need replacing, the commutator should also be machined to make it smooth.
GFM
Well done
Thanks a lot...
The rubbing of the brush to the copper would create ultrafine particles the could get into the air and get inhaled into the lungs. Certainly not to healthy, especially if used in a fan that moves air. Are induction motors brushless?
+Rick Rude They do not have brushes.
GFM
Awesome video. Could an induction motor video be in the near future? Thanks Jeff
I will be doing a series on induction motors soon.
GFM
WHERE'S THE LINK?
Thank you. Good work sirI have a question pls, I have a black and decker super sweep 8422, the problem is when I switch on it makes sound and it's stuck I tried to push the fan it didn't move at all but when I switched off I can move the fan very easy, I can record a video and upload it to watch it for more explanation it you want, I feel u have a great experience in this field.Thank and I hope u can help
This unit uses ball bearings. One of them may have lost its balls. You can replace the bearings, either from the factory or from a bearing shop. Hope this helps.
GFM
These motors also can run at very high speeds, tens of thousands of rpm for some types. A vacuum cleaner motor may spin 10,000 rpm, allowing a small fan to produce powerful suction. A router may run at 25,000 rpm no load speed. Can’t run that fast with induction motors that are limited to power line frequency, usually 1725 or 3450 rpm.
Your explanation same like my friend.
excellent, as always...
Anyway to turn this into a generator I'm new to it
Only if it has a permanent magnet.
GFM
very nice explanation gfm
What does shaded pole mean ?
What are the sings of the wearing out say on a drill?
+Arron Adams Either a burnout from shorted windings or bearing drag, possibly squeal.
GFM
What problem in carbon bresh fir
Yep my sewing machine from 1949 goes ZOOOOOMMMMM when you first start stitching and then it goes z...o...o..o...o...o...m
👍👍🙂
This was incredibly confusing.
All I wanted to see is what brushes do. This could have been five minutes shorter, I almost fell asleep.
You need to get more sleep. You can't stay awake for 7 minutes?
GFM
thanks gfm
wut he say
Lost me by 2:00. In fact, I feel like I know less!
You need the theory to undesrtand. If a current pass through a winding, it creates a magnetic field
Si