Motopreserve
Drone Enthusiast
What's up folks. Hoping I can get some clarification on something I've been researching for the past 24 hours, and frankly, I'm starting to lose my mind...
I have a set of SunnySky 3508-20 580kv motors. They are listed on the product page as "28 pole." By all accounts, it seems these would be considered "high pole count" motors, although I have yet to find a definitive answer to when pole counts switche from being considered low (or normal) to high (is 12 pole low? Is 18 pole low or high, and what about 20+???). When I was first planning my build, I also had a fair amount of frustration finding info about ESCs (and the firmware) that would be appropriate for high pole count motors, with conflicting info/data regarding SimonK, and various opinions about other ESCs that have worked (or not) on these specific SS motors. I was doing all this research based on the assumption that my motor was high pole count.
I settled on HobbyWing Platinum Pro Opto for the build, mainly because there had been great feedback from many of you here that are running high pole count motors. In an effort to fine tune the advance timing, I finally took a look at the motor itself (should have done this first thing, I know!), only to find that based on my cursory count (counting the coils and counting the magnets on the outer bell), the motor looks to be more like a 12N14P motor. Eegads! Have I been barking up the wrong tree this whole time???? Or am I counting wrong???
I found a photo online that showed a disassembled motor (not SS) that has twice the number of stator (inner) magnets as the number of coils/copper wire windings. Lending to the confusion is that a company like KDE lists specs for both stator AND magnet poles, and they definitely do not have twice the number of inner magnets to coils...
So I am looking for clarification on a couple things:
1. What is considered high pole count? What is considered low (or normal)?
2. When people talk about pole count, are they talking about stator poles or magnet poles?
3. When trying to count poles, are the number of coils/windings the stator poles? And would this number represent the total bumber of stator magents? Or does design vary by manufacturer?
4. Without taking the motor apart, if I cont the magnets i can see through the top - is this the number of poles? Or are there magnets hidden in there that would make the pole count higher than I can see???
Thanks for any insight you can provide. My brain is swimming in molasses right about now...
I have a set of SunnySky 3508-20 580kv motors. They are listed on the product page as "28 pole." By all accounts, it seems these would be considered "high pole count" motors, although I have yet to find a definitive answer to when pole counts switche from being considered low (or normal) to high (is 12 pole low? Is 18 pole low or high, and what about 20+???). When I was first planning my build, I also had a fair amount of frustration finding info about ESCs (and the firmware) that would be appropriate for high pole count motors, with conflicting info/data regarding SimonK, and various opinions about other ESCs that have worked (or not) on these specific SS motors. I was doing all this research based on the assumption that my motor was high pole count.
I settled on HobbyWing Platinum Pro Opto for the build, mainly because there had been great feedback from many of you here that are running high pole count motors. In an effort to fine tune the advance timing, I finally took a look at the motor itself (should have done this first thing, I know!), only to find that based on my cursory count (counting the coils and counting the magnets on the outer bell), the motor looks to be more like a 12N14P motor. Eegads! Have I been barking up the wrong tree this whole time???? Or am I counting wrong???
I found a photo online that showed a disassembled motor (not SS) that has twice the number of stator (inner) magnets as the number of coils/copper wire windings. Lending to the confusion is that a company like KDE lists specs for both stator AND magnet poles, and they definitely do not have twice the number of inner magnets to coils...
So I am looking for clarification on a couple things:
1. What is considered high pole count? What is considered low (or normal)?
2. When people talk about pole count, are they talking about stator poles or magnet poles?
3. When trying to count poles, are the number of coils/windings the stator poles? And would this number represent the total bumber of stator magents? Or does design vary by manufacturer?
4. Without taking the motor apart, if I cont the magnets i can see through the top - is this the number of poles? Or are there magnets hidden in there that would make the pole count higher than I can see???
Thanks for any insight you can provide. My brain is swimming in molasses right about now...