Thanks you for the video. Quite informative. From what you demonstrated, my conclusion is that using two same motors, with double sized controller should work fine. But I would use motors that use hall sensors and plugged one of them into the controller.
Thanks. Very helpful. Trying to make vtol plane with 2 edfs and now I understand how to have the same amount of current flowing through each one. Thanks again.
Nice, this explained alot. I'm working on 4x4 drive rover wheel, something like a mars rover. Maybe I will go for 1 ESC to 4 motors. this saves a lot of esc
I'm so glad I found out your video, I was wondering what would happen if 2 motors are symmetrical mechanical connected so they generate always the same backEMF. I'm thinking about using 2x 70g motors instead of a 200g motor to gain weight. In theory 2 motors of half of the bigger one should work better since more cooling and more winding, hence more Eddy currents (Trust me, I'm an EE), but using 2 motors should work either with symmetrical backEMF, or with hall sensor master and slave setup. I don't have hall so I might try the first in practice..
plot twist: those were the pros in ideal world of course, in real world cons are EMF divides by 2 hence backEMF will drop, performance will drop, but in my case i have 500w MCU(different kind of esc that can limit current (non-avionic apps)) with 2 180w motors so I'll have to give it a shot
I watched earlier and found interesting, especially how one affects the other. I had an idea, isolate the motors from each other by running the one motor directly from the controller and then use the 3 phases to control the gates of 6 MOSFET,s to drive the second motor. Just a thought that came to me watching Master Chef ( don't ask) have not tried but wondering about an easy way to make my skateboard 4wd.
@@Joyplanes HI, take a look at this. electronics.stackexchange.com/questions/272338/running-bldc-motor-without-hall-effect-sensor-or-back-emf With a skateboard starting is not an issue but can be a benefit due to inertia of your body if you open up throttle a bit much from stationary.
I'm trying to find out about this, I'm building a gokart using Segway wheels but only want to use the circuitry from 1 Segway, any info would be greatly appreciated
What would happen if you lock the shafts of the two motors together and then run from one ESC in parallel? If the kv is the same and you can somehow align the motors before locking together, would this allow both to run efficiently?
That seems to work on RC cars like the E-maxx where you sync both motors before meshing them with the spur gear. I've seen it done with 1 or 2 ESCs. I also have a Nikko rc car that has entirely separate motors and transmissions at the front and back and I've used 1 ESC and 2 brushless motors and it to work fine. Maybe a little stuttery off the line sometimes, especially a low speed start but once it was up and running it went like a dream to be honest.
I liked the video (not many like this on the net) and can even tell that even when using the same motor the max RPM will never be achieved, it is better to have Two ESC's and 2 motors
@Joyplanes RC I like how you showed in the diagram at 2:35 that the signals might be out of phase. And in theory that should result in a failure, in reality it showed that is seemed just fine. this is because the ESC will try to sync then unintentionally by slowing down one motor until they are the same. This has the effect that it creates an oscillation in these signals equal to the switching frequency that will work against both motors. and this it the observed reduced efficiency as its wasting power trying to correct the errors. And although it is possible to run motors this way it is still not recommended as in the long term it will damage the ESC and/or the motor(s)
Thanks for the test. I've got an 80A ESC that I want to use to power to max 30A motors of the same kind and same payload. This is for a ball launcher so I don't think it will really matter to use the one ESC. Let's see what happens! haha
One esc can used to drive two identical motors but the wires have to be very short. It works but definitely not recommended. Any differences in motors' specification, a new and an older motor, impedance due to longer or bad cables, can cause one of the motors stop or tickle due to desync.
Well done on the video however I would like to add something. If the two motors are identical and ESC of correct rating you should not have desync issues. The two motors should phase lock (3 phase generation principle) a scope would confirm this/bl heli frames. Not advisable though.
So it can and will work just fine with no issue if your esc is double the rating? I’m making an edf car with one large brushless esc and 2 small brushless UMX motors
Very informative.....but can you tell me what to do if i want to control two motors.......actually i am working on a rc boat for which i need to control two propellers for turning and speed enhancement.
Thanks bro please make these kind of more videos...🙂 bro tell me one thing if my rc plane have right and down thrust can i use the cw propeller. As i have used but its not flying.. i have to uses only ccw propeller then its flying well.. why?
It dosnt work. I dont know if it works to connect a 6diode rectifire. I think it dosnt work, becourse the back emf is missing and the Esc trys to get more and more speed.
A three wire esc is for a brushless motor. Brushless esc's send pulses of current to each set of windings. A 2 wire esc literally just connects the battery to the motor. A 2 wire esc at full throttle is no different than connecting the battery DIRECTLY to the motor. Google how brushless vs. brushed work.
So yes it absolutely can be done and works fine. Obviously if one motor stops the other will too. Obviously there is no redundancy for loosing a sinlgle esc if there is only one esc.
You change direction of a brushless motor's spin by swapping out any 2 of the 3 wires. But now you need a reverse prop and you will either need to use a Left-Hand nut to secure the prop to a Left-Hand prop shaft/adapter, or use a Lock Nut or a Cotter pin thru the Right-Hand nut and shaft. Otherwise it will eventually spin the nut off the prop shaft.
The thing you say is bad ie if one motor stops so dies the other could be a good thing in a plane for a novice pilot, I saw a guy crash a twin motor model because one motor failed and he could not control the model due to to the other motor puling the plane into a spin. However I absolutely agree it's a bad idea and esc do not cost much anyway so why would you even bother risking running two motors from one esc?
I wanted to build a y-6 drone back then using 6 motors and 3 esc. I didn't even get the pair of motors spinning like yours lol The motors only kept on shaking but never spinned. So it's really not recommended to run multiple motors with one esc
Can I do it can do it the way you're doing but instead of using a stack just plug everything into my receiver and use a y harness cuz I seen somebody use that in another video with the Y harness well the motors and the ESC work with a receiver instead of a stack
Title reminds me of two girls one cup 😂 good material tho, but it's quite obvious that 2 motors will draw 2x more current than one, hence the ESC temperature.
@@szajba8106 It's the same as doing two batteries in parallel. Two motors in parallel are splitting the load of the weight and inertia between each other. Although once the car is up to speed, they'll start pulling a high current on each individual motor again as they struggle to maintain a high speed, although that top speed should be slightly higher than just the single motor
Hi mate. What I'm trying to find out is on a boat setup with twin motors. I want to be able to cut power to one motor for turning without using a servo or rudder. A link to relevant information would be amazing, I can't find anything at all. Thank you 🙂
Im glad you documented this so we dont have to take the chance on blowing up our gear! Thanks for the experiment!
It’s a brushless motor, of course a brush makes it not work.
Hahaha nice mann
you can run multi brush motors on one esc
Thanks you for the video. Quite informative. From what you demonstrated, my conclusion is that using two same motors, with double sized controller should work fine. But I would use motors that use hall sensors and plugged one of them into the controller.
Thanks. Very helpful. Trying to make vtol plane with 2 edfs and now I understand how to have the same amount of current flowing through each one. Thanks again.
Hi Joy I like video and
English because I speake english and you make a video excelent.
Joy you are the BEST TH-cam.
Ok. In spite of all my complaining. I did learn from you there is one dead pole set and two active poles. Thank you.
Nice, this explained alot. I'm working on 4x4 drive rover wheel, something like a mars rover. Maybe I will go for 1 ESC to 4 motors. this saves a lot of esc
How about 2 ESCs connected to 1 motor to split the current load between the ESCs
Dc maybe, brushless won’t without some way to sync them
Try it in a fireproof area if you think it's a good idea.
I'm so glad I found out your video, I was wondering what would happen if 2 motors are symmetrical mechanical connected so they generate always the same backEMF.
I'm thinking about using 2x 70g motors instead of a 200g motor to gain weight. In theory 2 motors of half of the bigger one should work better since more cooling and more winding, hence more Eddy currents (Trust me, I'm an EE), but using 2 motors should work either with symmetrical backEMF, or with hall sensor master and slave setup. I don't have hall so I might try the first in practice..
plot twist: those were the pros in ideal world of course, in real world cons are EMF divides by 2 hence backEMF will drop, performance will drop, but in my case i have 500w MCU(different kind of esc that can limit current (non-avionic apps)) with 2 180w motors so I'll have to give it a shot
Awesome work dude searching for this video I want this channel to become famous like others
Keep it up👍👍👍👍👍👍
Thank you man!
I watched earlier and found interesting, especially how one affects the other. I had an idea, isolate the motors from each other by running the one motor directly from the controller and then use the 3 phases to control the gates of 6 MOSFET,s to drive the second motor. Just a thought that came to me watching Master Chef ( don't ask) have not tried but wondering about an easy way to make my skateboard 4wd.
That's actually a good idea.
@@Joyplanes HI, take a look at this.
electronics.stackexchange.com/questions/272338/running-bldc-motor-without-hall-effect-sensor-or-back-emf
With a skateboard starting is not an issue but can be a benefit due to inertia of your body if you open up throttle a bit much from stationary.
I'm trying to find out about this, I'm building a gokart using Segway wheels but only want to use the circuitry from 1 Segway, any info would be greatly appreciated
this application wanted to listen. very complete totally well specified. my review of your video is: 5⭐️⭐️⭐️⭐️⭐️
Thanks
Thanks for the test. This confirms my concern and will steer my design another direction.
What would happen if you lock the shafts of the two motors together and then run from one ESC in parallel? If the kv is the same and you can somehow align the motors before locking together, would this allow both to run efficiently?
That seems to work on RC cars like the E-maxx where you sync both motors before meshing them with the spur gear. I've seen it done with 1 or 2 ESCs.
I also have a Nikko rc car that has entirely separate motors and transmissions at the front and back and I've used 1 ESC and 2 brushless motors and it to work fine. Maybe a little stuttery off the line sometimes, especially a low speed start but once it was up and running it went like a dream to be honest.
I liked the video (not many like this on the net) and can even tell that even when using the same motor the max RPM will never be achieved, it is better to have Two ESC's and 2 motors
@Joyplanes RC I like how you showed in the diagram at 2:35 that the signals might be out of phase.
And in theory that should result in a failure, in reality it showed that is seemed just fine.
this is because the ESC will try to sync then unintentionally by slowing down one motor until they are the same.
This has the effect that it creates an oscillation in these signals equal to the switching frequency that will work against both motors.
and this it the observed reduced efficiency as its wasting power trying to correct the errors.
And although it is possible to run motors this way it is still not recommended as in the long term it will damage the ESC and/or the motor(s)
I finally found this video, Thanks for this video
Thanks for the test. I've got an 80A ESC that I want to use to power to max 30A motors of the same kind and same payload. This is for a ball launcher so I don't think it will really matter to use the one ESC. Let's see what happens! haha
Hey
What's the result?
@@Divyesh_Sinha 1 ESC didn’t work properly. Needed to use 2 separate ESCs.
One esc can used to drive two identical motors but the wires have to be very short. It works but definitely not recommended. Any differences in motors' specification, a new and an older motor, impedance due to longer or bad cables, can cause one of the motors stop or tickle due to desync.
Beautiful experiment 👍
Thanks for the great video. I found this very helpful.
Well done on the video however I would like to add something. If the two motors are identical and ESC of correct rating you should not have desync issues. The two motors should phase lock (3 phase generation principle) a scope would confirm this/bl heli frames. Not advisable though.
very cool, thanks for taking the time to make this video.
What if we use Universal Esc ( means an esc that can connect 4 motors ) . Will it work ?
So it can and will work just fine with no issue if your esc is double the rating? I’m making an edf car with one large brushless esc and 2 small brushless UMX motors
Very informative.....but can you tell me what to do if i want to control two motors.......actually i am working on a rc boat for which i need to control two propellers for turning and speed enhancement.
I learned a lot from this. Thank you
hi, can you please help me to understand the quadcopter circuit design. should I connect the motors and other equipments in parallel or in series ?
Hi bro I'm from Indian love yor video 👍
Thanks bro please make these kind of more videos...🙂 bro tell me one thing if my rc plane have right and down thrust can i use the cw propeller. As i have used but its not flying.. i have to uses only ccw propeller then its flying well.. why?
Yes that's actually correct if viewed from the cockpit. CW propeller and a bit of right thrust.
Thank you for your video and your experiment.
Really nice! 😊
good job on it!!
I have two 2200kv brushless motor and 14.8v lipo battery
How to run one esc and how much amp esc is better those motors
Got that idea，next time i'll just connect two esc with 1 motor
Can you make 3 brushless motor and one ESC?
I want to know how to connect a 3 wire ESC to a 2 wire motor
It dosnt work. I dont know if it works to connect a 6diode rectifire. I think it dosnt work, becourse the
back emf is missing and the Esc trys to get more and more speed.
A three wire esc is for a brushless motor. Brushless esc's send pulses of current to each set of windings. A 2 wire esc literally just connects the battery to the motor. A 2 wire esc at full throttle is no different than connecting the battery DIRECTLY to the motor. Google how brushless vs. brushed work.
So yes it absolutely can be done and works fine. Obviously if one motor stops the other will too. Obviously there is no redundancy for loosing a sinlgle esc if there is only one esc.
Please give a video on how to change the rotation of one motor
You change direction of a brushless motor's spin by swapping out any 2 of the 3 wires. But now you need a reverse prop and you will either need to use a Left-Hand nut to secure the prop to a Left-Hand prop shaft/adapter, or use a Lock Nut or a Cotter pin thru the Right-Hand nut and shaft. Otherwise it will eventually spin the nut off the prop shaft.
how about using esc that has x2 rated amps of motor..will it work properly?
Still will have some sync issues
SO if you have a high amp esc and 6s normally runs 2207 1800kv double the kv at 3600kv for 6s this is a test needing to happen
Can you try 1 servo tester with 4 esc?
Two DC motors with one esp32, does it work and how?
Please make a video how to use two esc with two motor for twin rc plane..
OK, Will do!
@@Joyplanes tx
Thank you for good video!
I don’t understand the three wire battery connection? All my lipo’s are two wire.
Stupid question: What would happen if the second motor negative was connected before the ESC and the positive after?
I'm just spit balling new to all this but wouldn't a y connection point help with some issues
Can someone tell me the name of the device he is using to control the speed?
when i conected two brushless motors why it work only one ? help me please🙏🙏
One of them might be having a bit more resistance or it's a bit out of phase per say. As you saw it is not that reliable.
The thing you say is bad ie if one motor stops so dies the other could be a good thing in a plane for a novice pilot, I saw a guy crash a twin motor model because one motor failed and he could not control the model due to to the other motor puling the plane into a spin.
However I absolutely agree it's a bad idea and esc do not cost much anyway so why would you even bother risking running two motors from one esc?
That's good! 👍
I wanted to build a y-6 drone back then using 6 motors and 3 esc. I didn't even get the pair of motors spinning like yours lol
The motors only kept on shaking but never spinned.
So it's really not recommended to run multiple motors with one esc
I was going to do something similar with a DJI parts drone , curious if it will work
I thought you were going to build a flying cutting mat.
Hahaha yes but the air is been blown upwards
Can I do it can do it the way you're doing but instead of using a stack just plug everything into my receiver and use a y harness cuz I seen somebody use that in another video with the Y harness well the motors and the ESC work with a receiver instead of a stack
Keep it up 😃
Can we combine two esc to run one motor, that's 30a esc and 80a esc to make 120a esc?
No. That wouldn't work. It will create a short circuit and posibly damage the ESCs
@@Joyplanes but can you do is with 2 30 esc in parralel so you have 60 amps
Then what is the solution??
What about two esc from one output on the controller?
That is fine for sure.
Actually you showed quantum physics in action!
thank u
im planning to make a twin otter but now i guess ill make single motor rc plane
If Connecting 2 motors in single shaft???
They will have to be pretty well aligned in order to work fine.
Heeeyyyyyyyyyy I use those motors!
Cheers!
Plz add link of diagram
Plz sir
Title reminds me of two girls one cup 😂 good material tho, but it's quite obvious that 2 motors will draw 2x more current than one, hence the ESC temperature.
Although the motors will, individually, draw less current because they carry less load each
@@jordanbwalt how come they carry less load?
@@szajba8106 It's the same as doing two batteries in parallel. Two motors in parallel are splitting the load of the weight and inertia between each other. Although once the car is up to speed, they'll start pulling a high current on each individual motor again as they struggle to maintain a high speed, although that top speed should be slightly higher than just the single motor
Bro that video made me throw up when I watched it
sir can i control 4 motor with 1 ESC
Not at all. You'll burn the ESC. And it wouldn't work
@@Joyplanes what if you have 4 x 5amp motors and a 30 or more amp esc?
All motors would be the same KV and type
Yeah I doubt what happen when I do that.
Good boos
Hi
nailed it !!
May be brushed motor will work easily
You said it was two brushless motors, but then you used a brush. I don't get it...
Hi mate. What I'm trying to find out is on a boat setup with twin motors. I want to be able to cut power to one motor for turning without using a servo or rudder.
A link to relevant information would be amazing, I can't find anything at all. Thank you 🙂
Same here. Did you find anything?
use a mixer setup on your transmitter
bro it works quit ujr ney saying
Oh my god this is maddening.
YOU
WERE
WRONG
just admit it.
What if you use 3? lol
NOW RUN ONE MOTOR WITH TWO ESC,S FOR DOUBLE THE POWER ekoj
just buy a better version of the ESC
How about 3 motors?...lol
That's good! 👍