[SpEEdyBL]

Still, there should be a difference between the 1930 10t and the feigao 8l. To compare kv's of lehner motors vs. feigao motors, multiply the feigao kv by .9 to get the lehner equivalent. Kv drop under a typical load is actually quite small and you would need a huge load to make a 3000kv motor to drop to 2000 kv under a load. Rpm drop per amp is no-load kv times motor resistance. It doesn't matter how many volts are applied, rpm drop per amp is a constant. Lets take the 8l for example and say your running it on 12 cells. 3072*.0076 = 23.3 rpm drop per amp. In the worst case senario, let say the motor is drawing 60 amps. At 14.4 volts the motor is still pumping 2974 kv under that load. Voltage drop of the batteries will will make the motor spin slower. The person with the lehner 1930 10t probably had better batteries.