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Electric General Discussion
› need troubleshooting help
11-16-2014 12:52 AM  3 years agoPost 1


atlanta ga

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I was flying my new to me Raptor 550e today and the voltage started at 4.20 I have my alarm set for 3.80 after a minute of flight the voltage alarm went off..I changed voltage alarm to go off at 3.5 volts . Alarm did not go off again but 3 minutes into flight motor quit for about a second I autoed from about 9 feet just before I was on ground it started again. Maybe only dropped a few feet battery was at 3.85 and scared I packet it up but 5 minutes later it was at 4.10..Electric is new to me so im not sure if voltage drop is normal..engine stopping sure isnt Now I don't know if it is the battery Pretty sure it is or if should I suspect the motor or esc. I really really don't wanna crash this bird it flies like it has autohover
any sugestions I think I will trash the battery and try again but I don't wanna through away a battery if this is normal.. Thanks again

11-16-2014 04:10 AM  3 years agoPost 2

rrKey Veteran

Granbury, TX USA

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It isn't normal. However, you didn't indicate batt size, "C" ratings, motor/esc size, etc, so it's hard to make a really accurate assessment.

Can you get your internal resistance values for the pack(s) in question?

The obvious and first thought is that your motor cutout due to low voltage value being reached. Changing it down from 3.8 to 3.5v/cell and getting 3 minutes more (4 total) says weak pack to me, but again, without other specifics, I don't know.

Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep

11-16-2014 03:15 PM  3 years agoPost 3


Richmond, VA, USA

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Need to check what the LVC is set to in the esc and make sure it is not set to hard cut off. While you're there set the current limiting to insensitive or off. You can access this stuff with a Castlelink.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

11-16-2014 05:47 PM  3 years agoPost 4
Pistol Pete


Seffner, FL

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~~Enjoying the hobby one flight at a time~~

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Electric General Discussion
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