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  • I got the 20A one by mistake, and it worked fine up to using 11" prop.  When using the 12" prop, it was a bit unstable.

  • 3D Robotics

    20A is fine, max draw with an 11in prop is about 15A. You'll hover with 2 or 3 A (per motor).  Buying a larger ESC doesn't hurt you at all but in this case the 20A is safe.

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