Guys,
Doesn't anybody have a simplified version of a table i can use for choosing esc's motor and battery combinations? usually i build a new plane every week so i need a general power kit, at the moment i am running a Turnigy 1000kv motor. 2200 mah 3cell, and i need an esc, any ideas on what esc would fit well?
Regards
Mike
go for 30A ESC. :hatsoff:
http://www.kinetichobbies.com/index.php/new/beatles-30-esc.html (http://www.kinetichobbies.com/index.php/new/beatles-30-esc.html)
Mike, selection of ESC is pretty simple. You just need to find out the max continuous current supported by the motor, which usually will be mentioned on the motor specification page. Add about 10 amps to this and you'll have the ESC required. The extra 10 amps is because the motor will handle burst current (for say 10 secs) which will be more than the max continuous current. Or if the burst current is specified, then you can go by that number in ESC selection. Be aware that ESC too have burst currents. However, it's always better to have ESC rated more than the burst current of the motor.
There is no table for combo selection... It all depends on the motor... There is a recommendation on the motor specs... If not check the wattage of the motor divide it by the voltage u r supplying.. You will get the current drawn. Use a slightly higher rated esc than the figure you get.. All the best
Just checked the Motor Specs online, guess 30 amp is spot on, so then that leaves me with a question, can i then just vary the battery?
What do you mean by "vary the battery"?
Battery capacity does not make any difference to the ESC selection. However, Voltage does. Higher the voltage, lower the current drawn. So a 3S battery will draw less current than a 2S battery.
Vishal has covered it all pretty well. I would like to add to this that go in for a higher amp ESC. For example, if the burst current consumption of your motor with 10" prop is 30A, go in for a 40-45A ESC. That will keep your ESC cool and mods like mounting the ESC outside the plane or cutting the heat shrink will not be necessary. Moreover, the FETs in the ESC will not be overloaded and will have a longer life. So, spend a little more and go in for this little upgrade...
so a 40 Amp esc will be a good standard? and Vishal sorry, i was not clear enough, i meant can i then in that way vary the mah of the battery? I have been out of the electronics game for so long, so even my knowledge of Kirchhoffs law seems to be forgotten. :-D
I did not mean that the 40A is standard, if you want to standardize it, you can say that if the motor is consuming:
- 10A, take a 12A ESC,
- if 15A, take a 20-25A ESC,
- if 30A, take a 40-45A ESC
And so on...
I think 30A would be sufficient for your requirement.