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Old 2008.04.21, 01:33 PM   #1
jimbo
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Motor stops working?

I recently picked up a used mini-z off ebay and i love it. i made a track on my carpet as i am awaiting to get a RCP track for my birthday. after a couple hours when i would hit an object and my car would bounce off i couldn't go forwards but my steering still worked. if i picked up the car and pushed it or spun the back tires it started working again. i simply thought that it was because it was picking up so much dog hair so i constantly cleaned it around 4 times every charged battery set. but yesterday my dad tore up the carpeting and i was driving it today but yet it still will stop. i don't think its my fets but yet i am beginning to thing it could be my motor?i have a kyosho x-speed V. thanks
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Old 2008.04.21, 09:29 PM   #2
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I occasionally have the same problem. Cleaning the motor usually solves the problem.
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Old 2008.04.21, 09:45 PM   #3
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You should try looking for a lose connection (or broken) with motor wires, or anything with the motor.
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Old 2008.04.21, 10:02 PM   #4
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Clean out the motor, replace the brushes or replace the motor altogether.

Could be the brushes, or the comm...
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Old 2008.04.21, 11:09 PM   #5
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I use a pencil eraser to clean the comm as well. After a while it gets gummed up. Especially if comm drops are used.
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Old 2008.04.21, 11:57 PM   #6
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I prefer the eraser to the sandpaper. I have done both. It takes less time to break the motor back in after cleaning. I dont really break in my motors much, just comm drop them, run them for a battery cycle without pushing the car. Then I clean the motor again... lube the bushings. I dont lube bearing motors, I prefer to run them dry after cleaning with motor spray. I dont want it to collect RCP dust in the bearing.

My methods may not be the 'best'. But I dont have slow cars
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Old 2008.04.22, 02:25 AM   #7
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i had exactly the same symptoms - it turned out to be the motor wires not being screwed down correctly at the board.
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Old 2008.04.22, 02:26 AM   #8
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Not too sure this will apply, but my educated guess is the 'fuse' on the Xspeed triggered during your runs and cause the motor to shut down. It really doesn't do much except it will pre-maturely shut down the motor; under normal use, your fets will not be burnt so easily.

To locate it, look for a components that is soldered onto one of your motor wires, and it is a small square component in mud-yellow/brown color, near the connector to the board. Once you locate this piece, just remove it from the wire(directly having the motor wire solder to the connector instead of passing thru this fuse) and your car should no longer have the shut down problem.

If you are not 100% sure which is which, please feel free to take a picture and post it before removing anything. Good luck!
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Old 2008.04.22, 02:27 PM   #9
jimbo
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hey thanks for the info guys i drove it around for about another hour this morning and i had no problems at all i guess it had something to do with my carpet but now i know what to do if it happens again. thanks guys
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