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Using Arkbird osd
If you've followed my channel I started the my Drak off with a 4s setup with the Cobra 3520/10 980kv motor and between 8000-10,400mah.
For the 5s setup I'm using the same motor and Turnigy 5000mah 20c batteries times 2 for a cool 10,000mah.
I was underwhelmed with the 4s configuration and thought "how good could 5s be?,,," I was shocked at the performance of the 5s batteries. Throttle on demand and it just made for a more lively airplane. This was the airplane I was looking for.
My reason for going with 4s in the beginning? I had a ton of large 4s batteries unused... Getting into the Drak with the only added cost being a $50 motor was too tempting. Also, I could add 5s with the motor I chose. In the end I'm very happy, the batteries from Hobbyking only cost me $88, so being budget conscious worked out.
Do I recommend Chris Clicks power setup- Wholeheartedly, don't let my penny pinching ways sway you- He's done all the research, so follow his lead.
Cobra Motor
Turnigy Batteries