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Old 08-12-2004, 07:58 AM   #1
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Default popping noise with Novak C2???

Greetings!

I just bought a used Novak C2, and it has started making a strange popping noise. Under full throttle (which actually feels like about half throttle) the popping happens about every 5 seconds. The closest thing I can compare it to is a backfire . This is the first ESC that I've owned with a power capacitor. Maybe this is a sign that it's fried? Any other ideas? I'm using a stock motor.

(Sorry if this is a stupid noob question; searching for C2 doesn't work.)
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Old 08-12-2004, 02:04 PM   #2
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Is it wired properly? Are you using a Schottky diode on the motor? If so, the polarity may be incorrect.
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Old 08-12-2004, 02:43 PM   #3
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Yeah, you probally poped your diode, make sure that the white or silver mark on the diode is on the positive side.
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Old 08-12-2004, 02:45 PM   #4
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another thing check if ur capacitor is wired correct too. If its wired backwards, that coud be why its poping
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Old 08-12-2004, 02:57 PM   #5
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Thanks for the responses.

There is no diode on the motor. I suspected that the cap was perhaps wired backwards so I reversed it but there was no change. Perhaps this is evidence that the cap is blown???

Any other ideas....?
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Old 08-12-2004, 05:41 PM   #6
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has the speedo plugged in reverse?
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Old 08-12-2004, 06:28 PM   #7
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Try replacing the power capacitor and put a diode on the motor. Be sure to observe proper polarity. Be sure to check all of your connections. Maybe there are two electrical points arcing, which could explain the frequent popping sound. If all else fails send it in to Novak.
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Old 08-16-2004, 08:10 AM   #8
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Hmm, well, the problem seems to have cured itself. I think it may have actually been as issue with the battery since when I changed packs the noise went away, although I still don't understand why a bad (or just low) battery might have created the popping sound.

Anyway, thanks for all the help.
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