ORIGINAL: DAL4215
Now when you say 15C what are you referring to? And do you know of any 9x5 counter rotating props? What would happen if i get a 9x5 pusher prop?
15C is the battery current rating. A 2100mah 15C battery can handle 31.5amps. You take the 2100 and divide by 1000 to take the miliamps to amps. So 2.1, then multiply by the C rating number, in this case 15. So 2.1amps x 15C = 31.5amps.
Pusher props are designed for rear/mid. motor mounted planes in which the motor is turned around and mounted backwards, facing the rear of the plane
If that makes sense. They are designed to push air instead of pull it, like a normal motor mounted setup would.