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Old 07-03-2007, 05:37 PM   #1
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Cool Speed control bumps?

hey,

I recently bought a novak gt7 off a friend of mine to use in my buggy. Hit the track today, and about 6 min into my run hit a double the wrong way, and flipped my buggy upside down. Okay, not the end of the world. So anyway, i flip the buggy over, and go to hit the gas and the car doesnt move? Hum this is random? Servo works fine, car just wont go foward? Decide to check the battery, no issues there. change batterys, same no foward deal? Talk to guy at lhs, and he says gearing is prob off. So i hit the track again, with the new gearing, and still the same deal. so i change my 13x2 and go to a 19 money motor. Get the car wired up problem fixed. Okay just figured it was a motor issue. Charge up a pack hit the track and have issues on that same double, which leads the car to flipping over again. what do u know, same issue no foward. I am direct soldering every thing, so theres not connectors that could be loose. all my packs are fine, running spektrum Dx2 system !

My guess, is that the esc is taking a crap? Whats your opinon?
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Old 07-03-2007, 05:54 PM   #2
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Your brushes are probably just hanging up from the shock of casing a jump. Just pull the brush wire back a little bit and let it go so it snaps back in.
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Old 07-03-2007, 11:19 PM   #3
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thats interesting, i thought checkpoint motors brushes were held down to the com by the springs? is this common?
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Old 07-03-2007, 11:30 PM   #4
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Your brush sounds hanged up. Also make sure you didn't bend the hood on the endbell.
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Old 07-04-2007, 04:54 AM   #5
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Is the GT7 or motor hot when this happens?

If all of the above check out ok then it could be a dry solder joint. So it might be worth checking or resolder the motor wires on the GT7 and at the motor.
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Old 07-04-2007, 05:06 PM   #6
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hey, i saw that the brushes werent catching the armature, got a scredriver and just pushed the brush back in, motor works? any way to fix this permantly
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Old 07-04-2007, 05:12 PM   #7
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hey, i saw that the brushes werent catching the armature, got a scredriver and just pushed the brush back in, motor works? any way to fix this permantly
Get rid of the brushes?
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Old 07-04-2007, 05:14 PM   #8
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NICE
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Old 07-04-2007, 05:41 PM   #9
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Take the motor apart and clean it with motor spray. Also, heavier springs will help too.
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Old 07-04-2007, 06:54 PM   #10
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I have found the with those brush type motors you can get dirt and junk inside the brush holder area. With the round brushes when I go to rebuild a motor before I replace the brushes I will put the brush wire inside a small dremel unit and run it at the lowest setting. This way I use the old brushes to clean out any junk in the holder area.
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Old 07-04-2007, 07:15 PM   #11
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Old 07-05-2007, 01:33 AM   #12
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Easy there smokey It could just as well be a missed phase wire causing all the problems.

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