The updated design and mid-Kv edition of the JohnnyFPV 2207 motor from Lumenier.
One of the surprising things here is that the Kv tested about 100Kv higher than stated, coming in at closer to 2500kv than 2400kv. This isn't necessarily a problem though, given the rest of the results. Even with the higher Kv, the internal design choices such as air-gap and magnet size and strength combine with the Kv to the desired results. The lightest prop is just shy of 1300g of thrust at the top end, with very reasonable efficiency numbers, with larger props, with the heavier 5" props coming in just shy of 1500g. As with the other motors in Lumenier's line-up, this motor focuses more on smoothness than abosolute reaction times and top power. The difference is particularly noticeable on the heavier props when directly compared against a similar size and Kv motor with a tighter air-gap and heavier magnets. The 2207 stator size here still delivers plenty of torque even for the heavier props and the slightly higher Kv will have a slight speed advantage in forward flight over higher torque but lower Kv motors. The final outcome is primarily a slightly flatter throttle curve with a bit less of that "turbo charger" feel at the top end and a bit less of the "jumpy" feel in general that high torque 2207 motors tend to deliver. For a certain type of freestyle pilot this motor will hit exactly what they're looking to accomplish while still providing enough torque and efficiency to work well on a large range of props and flying weights.