DIY brushless motor kit – I give up, for now…

Latest update on the topic of DIY motor kit from Banggood (DIY Assemble 2204 2-3S Brushless Motor 0.42*2.8 Copper Wire with Motor Cap Banana Plug): I give up. For now, at least.

In total, I tried to wind this motor 6 times. In every single case it ended in the same way: one of the phases burned. So, it's either me, or this kit. I've verified winding directions and termination schema for at least few times, and if I didn't missed something extremely obvious, I did it in a right way. I even verified winding directions during "unwinding". So I start to suspect, that this motor is either no 12N14P DLRK (not very probable), or it should not be winded with 0.42mm wire. Next week I will order 0.20mm wire and try one more time…

This is a winding schema I used:

dlrk winding schema

Poles goes as follows: AabBCcaABbcC where capital letter is clockwise, while small letter is counter-clockwise.

Phases were connected like this:

  1. A1-C2
  2. B1-C1
  3. A2-B2

Sure, I could have done something wrong. But not 6 times in a row…

10 thoughts to “DIY brushless motor kit – I give up, for now…”

  1. Did you use multimeter to ensure no continuity between phases and short to stator?
    If everything else fails, use kapton tape to insulate phases from stator and if you made it – from each other.

    1. I’m also suspecting stator isolation is a problem. But I used 2 different stators. I will try either kapton or some kind of spray

  2. I used an inductance-meter (L-meter) to check the balance of the windings … Sometimes I just can’t count correctly :D. I rewinded one burnt 1104 motor (yeah, pretty small) just by taking notice of the winding schematic and number of turns when unwinding the burned wire. Tke micro quad still flies prety well…

  3. Take care also of the direction of the winding! If you winded exactly like in the drawing you ended probably getting two nearby winding winded in opposite direction (CW and CCW) ! Just check the drawing and rethink it (or the drawing is missleading). The best testing method is the inductance-meter – by each inseriated “pole” the inductance must increase, if you put them right in correct order. If you put them wrong (CW AND CCW) a totally symmetrical schematic would result in 0 inductance (0mH) … thus short for the ESC …

  4. Excuse me: the drawing is wrong: you just can’t inseriate one CW and CCW winding: this will result in 0 inductance, like I said before. In other words: for a give phase the winding direction must remain the same, and I don’t think it depends on the schematic. In fact all windings must have the same direction…

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