way to know which motor I should replace to new one

Discussions about quadcopters/multi-rotors
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t.yoneda
Beginner
Posts: 24
Joined: Mon May 17, 2021 3:03 am

way to know which motor I should replace to new one

Post by t.yoneda »

Hi

brush motors deteriorate after long use, and crazyflie also uses brush motors.
recently, my crazyflie seems to be getting unstable during flight.
Is there any way to know which motor I should replace to new one in crazyflie?
jonasdn
Member
Posts: 85
Joined: Mon Mar 01, 2021 3:13 pm

Re: way to know which motor I should replace to new one

Post by jonasdn »

Hi t.yoneda!

You could try running the propeller test in the cfclient (under the console tab)!
t.yoneda
Beginner
Posts: 24
Joined: Mon May 17, 2021 3:03 am

Re: way to know which motor I should replace to new one

Post by t.yoneda »

thanks jonasdn!

I am aware of the propeller test and frequently test motors and propellers with it.
however, the crazyflie flips in flight

video (google drive)
I am using a lighthouse and the battery is new, bought a month ago.
topics I referenced
Tips about how to storage your LiPo Battery
Voltage sag on old batteries resetting the LH deck


in addition to the propeller test, I use the plotter to check the power output of the hovering crazyflie motor to see if there are any abnormalities (too high/too low, etc.).
kristoffer
Bitcraze
Posts: 529
Joined: Tue Jun 30, 2015 7:47 am

Re: way to know which motor I should replace to new one

Post by kristoffer »

You can flick the propeller with your finger so that it spins for about 1 second. Usually you will hear and feel the quality of motor + propeller. A propeller that is unbalanced, if the shaft is bent or the motor is worn out, will not spin smoothly or it will vibrate. This is a sign that it needs some love :-)
Also check if there is hair stuck between the propeller and the motor, that is a pretty common problem.
t.yoneda
Beginner
Posts: 24
Joined: Mon May 17, 2021 3:03 am

Re: way to know which motor I should replace to new one

Post by t.yoneda »

thanks kristoffer and jonasdn
OK, I'll try some more
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