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Old 05-23-2013, 05:24 PM   #13 (permalink)
rossk
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Join Date: Mar 2012
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I dont know about optimal, but I use:

14S 4400mah 1.6kg - 4min flight time
12S 5000mah 1.6kg - 4min flight time

You could go smaller, but it would cost you flight time.
Those flight times are with moderate to hard flight style @ 2100rpm
If you slow it down and take it easy, could get up to 10mins(have done a 10min hover/ slow circuit flight)
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