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Time to replace brushes?

Old 08-07-2011, 08:19 AM
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Cyberduke
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Default Time to replace brushes?

Hi, Recently my motor statred to act difrent maybey because it is time for new brushess? Let me explain.

Usually when my battery is low on power the current gets drawn in bursts. But now when my batery is low or I apply low throttle the motor does not turn. Then there is a weird screetcing noise coming from the motor and I can olso see sparks flying inside the motor.

Please help
Old 08-07-2011, 08:34 AM
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xerxes
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Default RE: Time to replace brushes?

is it a closd endbell or rebuildable brushd motor?

brand?
Old 08-07-2011, 08:39 AM
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Default RE: Time to replace brushes?

Not sure of the endbell. But it is a thunder tiger 17turn motor that came stock with my thunder tiger phoenix st2.
Old 08-07-2011, 08:41 AM
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Default RE: Time to replace brushes?

It sounds like you burned up the comm.
Old 08-07-2011, 08:43 AM
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Default RE: Time to replace brushes?

The comm? Not sure what that is? please elaborate
Old 08-07-2011, 09:12 AM
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Default RE: Time to replace brushes?

pic of motor.

comm is wat da brushs rub agenst. chanses r dat if u need new brushs, ur comm has 2 b trued also. if ur motor is closd endbell, its time 4 a new motor.
Old 08-07-2011, 09:39 AM
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Default RE: Time to replace brushes?

could not get a good pic on the digital camera.

Here are a fev links to sites that contain the motor

http://www.kawadausa.com/item.cgi?part_id=64820

http://www.anticsonline.co.uk/525_1_2587430.html

not sure if that is enough.

here is the link to the truck itself

http://www.tiger.com.tw/product/6539-F.html

will continue tying with the camera.

@ xerxes Is that what you wanted?


Old 08-07-2011, 11:23 AM
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Default RE: Time to replace brushes?

ya its rebuildable. a new set of brushes shood run u around 5$ & should solve ur problem 4 now, but trueing da comm is a more long term fix, & isnt sumtn u can do urself. take da brushs out & inspect em.

wen u got da brushes out, also spin da the motor shaft by hand & make sure it spins freely.
Old 08-08-2011, 11:54 AM
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Cyberduke
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Default RE: Time to replace brushes?

What is the average lifespan of the comm?
Old 08-08-2011, 12:47 PM
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Default RE: Time to replace brushes?


ORIGINAL: Cyberduke

What is the average lifespan of the comm?
It depends. If you have a lot of friction in your drive train, or your gears aren't meshed right, the comm can burn up pretty quick. Or, if you take it easy, you can make one last forever. You can usually get the comm cut, which means they take about .001" off the surface... but not if the motor is doing what yours is. You are better off just getting a new motor, brushed motors are not all that expensive any longer, especially if you get them off ebay.
Old 08-08-2011, 11:56 PM
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Default RE: Time to replace brushes?

I have replaced the brushes and the problem is solved.  

Guess that the comm is in good shape then.


Old 08-09-2011, 08:09 AM
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Default RE: Time to replace brushes?

Every once in a while you should use a q-tip and rubbing alcohol to clean the comm. It prolongs the life of the motor.
Old 08-09-2011, 08:18 AM
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Default RE: Time to replace brushes?

How do I open the motor? Is there a tutorial or something?

I think I have an Idea how to but just want to make sure.
Old 08-09-2011, 08:40 AM
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Default RE: Time to replace brushes?

http://www.beatyourtruck.com/forum/s...Electric-Motor
And dont use brake cleaner, use electric contact spray or motor spray. AND DONT USE WD40!!!!!!!!!!!

And instead of a comm pen, use a q tip and rubbing alcohol or a soft eraser. You can also just clean the comm by sticking a q tip in the brush hoods and spinning the motor with the motor shaft.
Old 08-09-2011, 09:08 AM
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Cyberduke
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Default RE: Time to replace brushes?

Thanks But I can't get the top of the motor off.

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