Don't say "One more flight"

The Hobbywing 40A ESC has a switching BEC board over the FET circuit. The 2 circuit board is soldered together, so increase the difficulty to repair components between.

Capacitor burst on crash. This is easy to be overlooked if the heat shrink is not cut open for investigation after a crash.


The specification of 40A is damn correct. I abuse it at 50A and the metal heat sink melt the heat shrink and shut down the BEC. The FET itself shutdown and protect from overcurrent.

A 50 cent repair.