HK 251 Whirlwind Brushless Quadcopter Review

The XK 251 is a RTF (Ready to Fly) mid-sized (250 mm diagonal) quadcopter featuring brushless motors and carbon fiber arms and landing gear. Brushless motors are more efficient and more powerful than the brushed variety typically found on toy-grade models. They also have a much longer life span. Here is an FAQ relating to […]

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