brushed motor help please

[idk]

ive search most everything is about what motor to get or brushless vs brushed.


problem:

at low speed it cogs so bad its undrivable. thought it was my tranny i had a r2 switch to axial clone tranny and the issue was still there. my lipos are good so ive thinking this motor i the problem. its a epic based 27turn motor with new brushes and springs. my question is this fixable is there something i should be lookin at or for? i just bought this motor a month ago used but rebuilt from homelesshobbies. no warrenty since it was used. i dont have much knowledge on motors other that they make me go. any help is great.


help i need to drive something ASAP

[OFFROADRCKOREA]

Sounds like a bad connection either with power to the motor or it may simply be dirty brother. Are the magnets nice and tight??

Thanks,
ORK

[OFFROADRCKOREA]

Have you opened it up and checked the magnets?

Thanks,
ORK

[idk]

i took it apart today and looked tight but i didnt bother to check the connection will do that next

[hpiguy]

How'd the comm look, was it nice and shiny or dirty?

[OFFROADRCKOREA]

Originally Posted by idk

i took it apart today and looked tight but i didnt bother to check the connection will do that next

99.9% the problem

Originally Posted by hpiguy

How'd the comm look, was it nice and shiny or dirty?

X2 dirty


Thanks,
ORK

[idk]

DSCN0807 by rev_woode, on Flickr



this is my comm looks good to me? or am i ignorant on comms?

[JohnRobHolmes]

need a better pic to really tell, but it appears to need a comm cut. Check for debris in the motor too.

[idk]

well motor was very clean, im gonna trust that the comm does need cut which i dont have access to a lathe and niether does my lhs. so im gonna swap in a a 19turn armature and start saving for a brushless setup. not that i have anything against brushed but i need a updated esc anyway so why not upgrade it all i guess.


but thanks for the help anyway saved me days looking at the same part and not getting it

[redsawacs]

If you're running the stock ESC, put an 20t motor or higher in it to see if the problem goes away. Wondering if the receiver or servo is causing glitching....seen it.

[Charlie-III]

What gearing are you running (pinion & spur)?
What is the condition of your gears?
How is your drivetrain, does it spin free & easy with no motor?
Have you tried to recalibrate the ESC to the RX?
Double check the condition of ESC & motor soldered connections, you may have a cold joint somewhere.

[idk]

16t and 87t spur spur is new pinion is getting thin. drivetrain is smooth. i have my DS angles almost level now.ive tried to recalibrate the xl5 to the gt3b numerous times but i can never get to take. i have to turn everything off cause it hangs on setting reverse and neutral? so im sure it either esc or motor at this point but a upgrade is due anyway. but could a wore pinion do this?

[idk]

Originally Posted by redsawacs

If you're running the stock ESC, put an 20t motor or higher in it to see if the problem goes away. Wondering if the receiver or servo is causing glitching....seen it.

its a xl5 which im good to 15turn i think. i also have a CC bec wired in the servo doubt its casue the glitch. but again im lost on this so who knows im gonna take all the elctronics out and resloder everything today just to see if that and new pinion help at all

[Exocaged]

did you pull the red wire out on the esc to rx plug?

[Charlie-III]

Originally Posted by idk

16t and 87t spur, spur is new pinion is getting thin. drivetrain is smooth. I have my DS angles almost level now. I've tried to recalibrate the xl5 to the GT3B numerous times but I can never get to take. I have to turn everything off cause it hangs on setting reverse and neutral? so I'm sure it either esc or motor at this point but a upgrade is due anyway. but could a wore pinion do this?

I doubt a worn pinion would cause it, but it's a cheap fix.

When doing the calibration, make sure the TX is set to:

-Throttle EPA's to 100%
-Throttle trims to "0"
Then try the calibration.
Is this a hacked GT3B?

Originally Posted by Exocaged

did you pull the red wire out on the ESC to RX plug?

Sounds like the BEC is direct to the servo, thus he needs the ESC red connected to the RX.

[idk]

started taking things apart desolder the bec and what do you now all systems go!. but my bec seems fine otherwise castle link see's it lite comes on idk but atleast i can drive until the new motor/esc get here

but i did all of this:

-Throttle EPA's to 100%
-Throttle trims to "0"
Then try the calibration.
and still had no luck but didnt think to try it after removing the bec.

[idk]

i did try to wire the bec with the esc red wire pulled and the bec plugged into the rx everything comes on and works but has even more of te cogging? so i guess at this point the bec is the problem.