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Old Aug 28, 2012, 11:13 AM
harmony is offline
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Please help me.

Flight time of my v911 is not normal, so I want to find out what the problem is.

First, I tried to measure my battery status.
I have 2 of turnigy nanotech 160mah and 130mah batteries.
Using turnigy accel-6, the batteries were discharged where the discharging current was set to 1A and cut-off voltage was set to 3.0V.
The amount of discharged mAh was 133mAh and 101mAh, respectively.
It seems that they are normal, right?


Using newly charged batteries, I flew my v911 until it cannot hover.
160mah battery (I just hovered heli.)
- flight time: 2min 30sec
- charged: 70mAh (After flying, I charged it to check how much it used.)
- avg. current: 1.7A

This is very strange. I heard that flight time of stock 120mAh battery is around 6~8mins.
Although I assume that they consume 80% of battery power, the average current of v911 should be 120*0.8/(6/60) = 1A
This is very different from my result.

Do you have any suggestion to find out problem?
When I flew my v911, it is very stable without vibration.
Possibly, motor problem?
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