Hello. Just a beginner question...
I have to solder motors to esc and i would like already have the correct rotations without reversing via software.
Cw motors are soldered straight and ccw soldered with outer cables crossed.
Is it correct?

Yes. Well, sort of. Can't tell cw or ccw until you soldered the first motor/esc, to test.
I usually solder 1 motor/esc before mounting, to check which direction it's running.

Though it doesn't matter which wires you cross, as long as you change only 2 of them.

(01-Feb-2017, 08:55 AM)fftunes Wrote: Yes. Well, sort of. Can't tell cw or ccw until you soldered the first motor/esc, to test.
I usually solder 1 motor/esc before mounting, to check which direction it's running.

Though it doesn't matter which wires you cross, as long as you change only 2 of them.

So the diagram i posted is correct ?
How do you test motor rotation before mounting ? Servo tester?

(01-Feb-2017, 10:13 AM)lorentz Wrote: So the diagram i posted is correct ?
How do you test motor rotation before mounting ? Servo tester?

That's what I've used before.  I've got a dedicated BEC/w battery that is attached to my tester, and a set of alligator clips to attach a battery to the ESC. Then I test one motor/esc combination, and just keep my fingers crossed that all four motors are wound the same (so far so good).

FYI, If you are using blheli escs and a cleanflight/betaflight FC, it is really easy to change the rotation with the blheli chrome gui. You basically just solder everything up, do a rotation check in betaflight GUI, and then open up the blheli chrome gui and connect, and change the direction on the motors that are spinning the wrong way

(01-Feb-2017, 10:13 AM)lorentz Wrote: So the diagram i posted is correct ?
How do you test motor rotation before mounting ? Servo tester?

I use the flight controller to test motors before mounting everything to the frame. Respectively, i only mount the motor itself to the frame/arm (don't try to hold the motor in your hand to test...)

Servo tester would work too if escs recognize normal PWM signal. But better use the flight controller itself, so you can calibrate esc endpoints, test the correct protocol (oneshot, multishot) etc.

EDIT: Damn i'm slow typing... there was no answer before from FASTscotty and oyWINla

(01-Feb-2017, 11:07 AM)fftunes Wrote: I use the flight controller to test motors before mounting everything to the frame. Respectively, i only mount the motor itself to the frame/arm (don't try to hold the motor in your hand to test...)

Servo tester would work too if escs recognize normal PWM signal. But better use the flight controller itself, so you can calibrate esc endpoints, test the correct protocol (oneshot, multishot) etc.

EDIT: Damn i'm slow typing... there was no answer before from FASTscotty and oyWINla

Thanks, I like my new callsign, haha!

Thanks! !!

(01-Feb-2017, 11:07 AM)fftunes Wrote: EDIT: Damn i'm slow typing... there was no answer before from FASTscotty and oyWINla

Hmm...so the "ff" doesn't stand for "fast fingers" then?

(01-Feb-2017, 12:56 PM)sloscotty Wrote: Hmm...so the "ff" doesn't stand for "fast fingers" then?

LOL. Not always.