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Lipo Question! Help!

Lipo Question! Help!

Old 06-18-2010, 03:05 PM
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Default Lipo Question! Help!

Ok so my friend let me borrow his lipo to put in my hpi blitz that has a castle 7700kv motor and sidewinder esc. It ran and drove like a beast but then we put it in again and it wont go forward nor backwards but the esc lights up green for forward and red for backwards and yellow for neutral still...BUT The truck is still able to steer! Whats wrong? we checked the battery and it's almost fully charged.

Help me out! Thanks!
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Old 06-18-2010, 03:09 PM
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Check all your motor lead wires. Is the BL motor sensored? The sensor wire may be bad as well.
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Old 06-18-2010, 03:28 PM
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Originally Posted by Casper
Check all your motor lead wires. Is the BL motor sensored? The sensor wire may be bad as well.
How can you tell if it's censored?

The part i don't get is we put in the lipo ran it for awhile then ran it a few more separate times then it did whats stated above....but meanwhile I can throw in a NiMh battery and it will run fine.
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Old 06-18-2010, 03:59 PM
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So it runs fine with nimh but not with the lipo? That is very odd. You say you checked the voltage of the lipo and it is above 7V? I am not all that familure with the sidewinder so not sure if there may be some other setting in there that my be messing with stuff.

Sensored motors have a separate sensor wire that plugs into the back of the motor. I am assmuing your setup is sensorless though.
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Old 06-18-2010, 04:10 PM
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Originally Posted by Casper
So it runs fine with nimh but not with the lipo? That is very odd. You say you checked the voltage of the lipo and it is above 7V? I am not all that familure with the sidewinder so not sure if there may be some other setting in there that my be messing with stuff.

Sensored motors have a separate sensor wire that plugs into the back of the motor. I am assmuing your setup is sensorless though.
Yeah, Mine is sensorless... this is really stumping me! I plugged the lipo in and i said full charge at 7.4v
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Old 06-18-2010, 04:45 PM
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Make sure the lipo cut off on the esc is set correctly,
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Old 06-18-2010, 05:03 PM
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Full charge for a 2S lipo is 8.4V
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Old 06-18-2010, 05:10 PM
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Whoop!!! I figured it out! Thanks guys!
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Old 06-18-2010, 05:48 PM
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Well what was it????????
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Old 06-18-2010, 06:49 PM
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Originally Posted by Casper
Well what was it????????
It was drained past the lipo cut off for the esc. I'm dumb! haha I just got my charger today and didn't know how to read it. turned out it was dead. so charged it up and all 3800mah are there after a 50 minute charge
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Old 06-18-2010, 08:52 PM
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Sweet. Glad it was a simple fix!
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Old 06-18-2010, 09:05 PM
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Originally Posted by asanfilippo
The part i don't get is we put in the lipo ran it for awhile then ran it a few more separate times then it did whats stated above....but meanwhile I can throw in a NiMh battery and it will run fine.
So once you charged the Lipo battery everything worked again?
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Old 06-18-2010, 09:46 PM
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Originally Posted by FrostyDude
So once you charged the Lipo battery everything worked again?
Yup
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Old 06-18-2010, 09:47 PM
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Originally Posted by Casper
Sweet. Glad it was a simple fix!
Yes I'm happy!
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