Did I just kill one of my F450's motors?

L

linter

Member
Have a look at this:


Happened after a mild flip over. How do I rectify?

thanks!
 
Last edited by a moderator:

T

tstrike

pendejo grande
You could try plugging the suspect motor into another esc, if it runs correct then check the suspect esc's connections to make sure they're all tight and don't wiggle. If those are good chances are you either lost a magnet or messed up the bearings which then involves taking the motor apart. I've heard tell of a new tool that removes bearings from multicopter motors.
 

L

linter

Member
okay, here are my results. I changed the flakey counterclockwise motor with the clockwise motor next to it ... and both seemed to run fine in their new homes (albiet in the wrong direction for life off). but when i returned the motors to their original spots, the flakey one returned to being flakey. i don't know what to make of that. do you?
 

B

Benchmark

Member
If it solved your problems by switching,How about switching the 2 counterclockwise motors . It sounds like a dodgy connection to me.
 

L

linter

Member
good idea. i'll try that next. hopefully it's just an issue of that one motor with that one series of connections, as far fetched as that kind of sounds.
 

kloner

kloner

Aerial DP
your problem is common. i had it happen a year ago, same kit. it's the bullet connector, the most logical explanation i've seen is that flux gets on the connector when there soldered and that rosin insulates the bullet from making connection. I've had other motors pretty much from the start and left my esc's the 30 amp opto and changing out the bullets fixed mine forever. some people go as far as buying new motors since these get maxed out pretty easily putting gopro, fpv stuff onboard
 

L

linter

Member
well, i actually think it might be the motor. i switched the CC motors and the flakely one in the new position was as flakey as it's ever been, while the good one in its new position was as good as ever. seems like a motor thing, right?
 

T

tstrike

pendejo grande
I think Kloner's got it right. Take all the props off, fire it up to mid throttle and jiggle around the bullet connectors to see if it gets the bad motor running. If it does and you're halfway decent with a solder gun, cut off the heatshrink on the bullet and check for a loose wire, they get pulled on and sometimes break the solder. When you spin the motor by hand does it feel different then the others? Worse case you buy a new motor.
 

L

linter

Member
just spun it by hand and ... yes, something is binding inside the motor. the others are more or less loose, the flakey one is more or less tight. i'll fiddle with the connectors anyway. but i don't think that its.

thanks, everyone, for your help, once again.
 

redridinghood

redridinghood

Member
Too me it looks like a blown esc fet. Sometimes a motor is hard to turn when connected to a esc. Nothing to do with a bad motor.
 

L

linter

Member
yes, but i've swapped motors around and same esc is fine w/ other motors, while the flakely motor is still flakey with other escs.
 



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