Originally Posted by
Petkov
New topic for today. I want to make sure my propulsion group has chosen the correct ESC. Can you guys help me where to start. To review my plane specs, we expect to run around 15 amps and 24 volts through to the motor. Should I go with 18 amps or 20 amps or 25 amps? Even with bursts we don't expect to go over 17 amps. Also what are recommended brands and would some show better performance than others?
if you don't expect bursts over 17 amps, I'd go with a 20 amp ESC, and if at all feasible, mount it so the ESC itself (the heat sink part) is outside the fuselage, in direct airflow.
(assuming external mounting is feasible, you could even go with a 15 amp.. if the ESC hasn't burned up after 10 flights or so, you'll know you're good to go
)
Castle makes some of the best ESC's in the business IMHO... not the cheapest, but among the best.
at 24 volts, you're looking at a 6 or 7 cell ESC. (they're rated for both voltage and amperage)