Motor "feel" analysis

[DucktileMedia]

After "feeling" a few motors I am starting to wonder how to interpret the strength of the magnetic "clicks." Out of 8 motors, the variance is huge! Does this mean the tolerances from one motor to the next are that different? if so, how does this effect performance? I heard that this feel evens out over time but I think if every motor was manufactured to exacting tolerances they would feel the same. Maybe it is like a high compression motor, where the tighter the clicks feel, the more power it has? I just got a cheapo Exceed motor for use on my gyro project and it is the tightest motor i have felt yet. Its almost hard to turn. Are there any educated answers to this seemingly inevitable variance in motors?

 

[cootertwo]

Hummm, I was just wondering the exact same thing. And being a "newbee" I did a search, and came up with your thread, and no answers! I have an Aerosky hex (DJI) and was just noticing how different the feel of the motors are. I mean like 1 of the 6 motors, has a strong magnetic pulse feeling, while most of the others, hardly at all. This is with the motors installed, hooked up, but no battery. I don't know if by chance the MC board might leave a motor or 2 in a "brake" position, or not? I don't have any loose motors to play with, but this is a good question. Maybe someone more knowledgeable will pop up.

 

[DucktileMedia]

Since no answer gas evolved over 2 years I'm just gonna say it doesn't matter much. I was just curious at the time. I will say that better motors are much more alike than the cheapos you get from Dji.

 

[cootertwo]

Wow, hard to believe that none of these "experts" have a comment about this. In my opinion, motors with weaker magnets, can not have the same power as ones with stronger magnets. So, when shopping motors, should we buy twice as many as we need, "feel" them all, and return the ones with weak magnets? Do motors loose power over time? Where are all the "no it all's" that jump all over some body that asks a stupid question.?????

 

[Electro 2]

I wouldn't loose a lot of sleep over this. Years ago, like 25 or so, when I was racing RC cars, we used to spend much time re-magnetising the motor fields to little advantge. The barium-ferrite magnets used for fields in that era weren't really than great, either. Today with the neodymium-iron-cobalt, I doubt things have changed. The NIB magnets are far more sensitive to temperature, however. The Curie point must be lower by a bunch. Give your motor a spin test immediately after a flight sometime.