RPM, current and power would be slightly higher because the copperwire resistance in the bigger motor is lower, which leads to lower voltage losses in the motor.

Efficiency of a bigger motor is slightly higher because of aforementioned lower resistance and because the motor will operate closer to point of maximum efficiency.

Velocity_konstant_Kv of the new motor should not differ too much though, because both current and power drawn are proportional to Kv cubed, a very disproportional effect. Unless the power system can handle the increase of course.

E.g. a
05-10-15-20-25% difference in Kv would lead to a
15-30-50-70-95% difference in current and power drawn.

More expensive silly, realistic and hopefully instructive examples of risky changes in voltage (power of 2), pitch and prop-diameter (power of 4!)


Vriendelijke groeten Ron
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