Originally Posted by Serpenteer

Hey guys, Im having a bit of trouble with the whole motor ratings.

Are the ratings provided by manufacturers trustworthy, or are they based differently like Nitro engines?

What determines a good motor? Is it RPM, RPM/Kv, Power (Watts) or Efficiency?
I'm asking this because I was comparing a X12 motor with a X11 motor, same number of turns and found something odd:

X12:
RPM: 45.360
Specific RPM/V (KV): 6.300
Power (W): 463W
Efficiency: 91%

X11:
RPM: 58.320
Specific RPM Per Volt, KV: 8100
Power: 393W
Efficiency: 91%

As you can see, the X12 has less RPM and therefore less RPM/V, but has more Power (W).

My guess is that the X12 will produce more Torque than the X11, but the X11 will have more RPM than the X12. Therefore for small applications, such as, 1/12, the X11 is better.

Can someone correct me please and shed some light?????
Thanks in advanced...