One of the best and smallest 3D motor i've seen. Back in the day flite test received a 3D printed motor but much bigger and after some pull it burn out. Hope to see some testing from you
most of the factory brushless motor nowadays has 14 magnet more closely eachother so it may be the case why your need a little push to start. you may want to try printing one that way it should improve it, very nice project!
Yes the magnets spacing may be a reason that the motor it doesn't self start, and another reason can be the combination between pole/slot, maybe with 14 pole and 12 slot as you said it will perform better, but the main reason is that it's lacks the laminated steel stator, I could use a stator from an old brushless motor but then wouldn't be "fully" 3D printed motor. Probably I try to improve this motor even if it doesn't have a practical use. Thanks for your comment!
reasons for lack of independent start: 1. there should be no gaps between adjacent magnets; 2. incorrect ratio of the number of windings and magnets. arc magnets are produced, that are better integrated into the BLDC case (both vertical/cylindrical and flat sectors with surface, not end polarization..as a rule, the number of magnets is even, then, number of windings should be smaller or greater than magnets by 2, but multiple of 3).
since your language is most likely Pashtun, your country of origin is in the "Islamic terror belt" therefore, I will not give you more precise answers.
what were your sources about learning all of this? i was wondering stuff like how you decided on the number and size of each magnet, number of turns of copper per slots etc...
Sir I have one doubt about the rotor in this type of bldc motor.that as the rotor is rotating at very high speed does by any chance it will ever come out of stator because it is open from below.please tell because I'm very confused.
There is no chance that the rotor will come out from stator, the shaft has a safety washer that will hold the rotor from coming out 3:15 , in fact there are more chances that the rotor at very high speed will break due to centrifugal forces.
very nice I really liked your project. I was wondering a evolution of your motor: instead of glueing the magnets make a slight shorter in height stator, then in the rotor you could use the extra length to have a small cavity, in top and another on the bottom where it holds a small portion at the top and the bottom of each magnet. So you will keep them in place mechanically. It will save time gluing each one of the magnets and also your fingers 😅
Looks like a clever design. What did you use as a BLDC motor controller and what is the voltage being used to drive the motor? I did not find that information in you video or in your link. Seems important! 😎
he didnt put any iron into the stator so there is nothing to carry the marnetic flux, mmake a coil of copper wire put a current on it and try to use it to pick up something metal. now take that same coil and wrap it around a nail or something containing iron. the copper by itself wont even pick up anything. thats why transformers have a iron core made up of laminated plates to reduce eddy currents. i would just buy some stators or find a way to stamp sheetmetal and spray some paint ir enamle on it before pressing them into obe.
@@HMProjects I understand 😊 It would be nice to do measurements any research to find out if it's possible to make a practical motor without ferro core, both due to weight, and to make it 3D printable (probably using nylon to make it more heat resistant). I would guess a radial axis motor would work better without a metal core?
Great detailed video explained each and every thing. One thing more other than this video subject, can you share specifications regarding 3D printer that was used in this video. Thanks
Electric motors generate heat, especially under load. Not to mention very high centrifugal forces when running at high RPM. I guess you dont realize the the majority of the magnetic force generated by the stator coils is due to them being wound around (laminated) steel cores. Not non-ferrous plastic. That being said, why would you even bother with plastic (3D printed, no less) as the construction material? This motor has the usefulness and durability of... well... a desk paperweight.
I know how electric motor works, I already mentioned in the video that the lack of the laminated steel core will affect the motor performance and of coarse how dangerous it is to run this motor at high rpm, being 3D printed this motor has no practical use, is only for educational purposes you shouldn't have much expectations from it.
One of the best and smallest 3D motor i've seen. Back in the day flite test received a 3D printed motor but much bigger and after some pull it burn out. Hope to see some testing from you
most of the factory brushless motor nowadays has 14 magnet more closely eachother so it may be the case why your need a little push to start. you may want to try printing one that way it should improve it, very nice project!
Yes the magnets spacing may be a reason that the motor it doesn't self start, and another reason can be the combination between pole/slot, maybe with 14 pole and 12 slot as you said it will perform better, but the main reason is that it's lacks the laminated steel stator, I could use a stator from an old brushless motor but then wouldn't be "fully" 3D printed motor. Probably I try to improve this motor even if it doesn't have a practical use. Thanks for your comment!
@@HMProjects would it make a difference if the stator would be electroplated? I mean, would that be a viable option when creating this?
Thanks for sharing the files!
reasons for lack of independent start: 1. there should be no gaps between adjacent magnets; 2. incorrect ratio of the number of windings and magnets. arc magnets are produced, that are better integrated into the BLDC case (both vertical/cylindrical and flat sectors with surface, not end polarization..as a rule, the number of magnets is even, then, number of windings should be smaller or greater than magnets by 2, but multiple of 3).
Where do you get your information from?
Can you help me make it?
since your language is most likely Pashtun, your country of origin is in the "Islamic terror belt" therefore, I will not give you more precise answers.
what were your sources about learning all of this? i was wondering stuff like how you decided on the number and size of each magnet, number of turns of copper per slots etc...
Did anyone answer you in the comments?
@@محسنولیزاده-ت4ط nope :(
Was the CAD or software to design the parts come with your 3d printer? if not what's it called?
@@saulwarren9611 No, the CAD program I used to design the parts is called FreeCAD.
Вау, это круто спасибо за работу
Sir I have one doubt about the rotor in this type of bldc motor.that as the rotor is rotating at very high speed does by any chance it will ever come out of stator because it is open from below.please tell because I'm very confused.
There is no chance that the rotor will come out from stator, the shaft has a safety washer that will hold the rotor from coming out 3:15 , in fact there are more chances that the rotor at very high speed will break due to centrifugal forces.
very nice I really liked your project.
I was wondering a evolution of your motor: instead of glueing the magnets make a slight shorter in height stator, then in the rotor you could use the extra length to have a small cavity, in top and another on the bottom where it holds a small portion at the top and the bottom of each magnet. So you will keep them in place mechanically. It will save time gluing each one of the magnets and also your fingers 😅
I would not risk to run the motor at high rpm without gluing the magnets, unless I want to see how hard those magnets hit something 😄.
Looks like a clever design. What did you use as a BLDC motor controller and what is the voltage being used to drive the motor? I did not find that information in you video or in your link. Seems important! 😎
Amazing! Did you have your own ESC to run the motor? Could you make a video about how to program one of those?
What magnets are you using?
what did you use it for?
the motor was really good 😍. I want to prepare like that can I get the calculations for that sir?
All you need is in the link in the description, I forgot to mention that the magnets have a size of 10x5x2 mm.
@@HMProjects You have mentioned it in the video
well, I forgot to mention that I mentioned that in the video 😅
@@HMProjects Lol
Have you faced overheat situation?
What is the size of the brass inserts?like m3 *3*4 tks
and what type of battery and controller do I need to use to drive it？
@@junrukong-tn1ukIf I remember correctly the inserts I used are M3, 4x5mm, to control the motor I used ESC in combination a tester for rc servos.
What is the volume ratio of the insulated wire?
how long does it run at max RPM before it melts?
What is the number of turns for the coil?
Can I use it to make a skateboard motor?
he didnt put any iron into the stator so there is nothing to carry the marnetic flux, mmake a coil of copper wire put a current on it and try to use it to pick up something metal. now take that same coil and wrap it around a nail or something containing iron. the copper by itself wont even pick up anything. thats why transformers have a iron core made up of laminated plates to reduce eddy currents. i would just buy some stators or find a way to stamp sheetmetal and spray some paint ir enamle on it before pressing them into obe.
plastic part on rotor is closer to stator, which is not optimal.
How much did this build cost home made
good job, bro!!
No ferro in the stator? That must decrease the power to almost zero? Have you measured it?
Hot to zero, but definitely it has a lower torque, anyway this has no practical purpose, I build it for fun and learn something new a long the way.
@@HMProjects I understand 😊 It would be nice to do measurements any research to find out if it's possible to make a practical motor without ferro core, both due to weight, and to make it 3D printable (probably using nylon to make it more heat resistant).
I would guess a radial axis motor would work better without a metal core?
How do you control this motor?
@@agusnavarta with an ESC ( Electronic Speed Controller ) in combination with a servo motor tester.
I like you're motor, it can't wait to disintegrate, yet it purrs like a cat :)
I already mentioned in the video how dangerous it is to run it at high rpm, in the video I run at half of the speed or less. thanks for your comment!
Great detailed video explained each and every thing. One thing more other than this video subject, can you share specifications regarding 3D printer that was used in this video.
Thanks
What is the name of the program that uses this?
FreeCAD
Please, I want the file😊
Everything you need is in the video description.
good
Thanks!
How can it work without iron core? 3% efficiency?
But what torque?
Not sure, I didn't make the calculation.
Electric motors generate heat, especially under load. Not to mention very high centrifugal forces when running at high RPM.
I guess you dont realize the the majority of the magnetic force generated by the stator coils is due to them being wound around (laminated) steel cores. Not non-ferrous plastic.
That being said, why would you even bother with plastic (3D printed, no less) as the construction material? This motor has the usefulness and durability of... well... a desk paperweight.
To answer. Why not?
I know how electric motor works, I already mentioned in the video that the lack of the laminated steel core will affect the motor performance and of coarse how dangerous it is to run this motor at high rpm, being 3D printed this motor has no practical use, is only for educational purposes you shouldn't have much expectations from it.