I've been reading and searching but having a hard time understand a few things.
First is size of a prop compared to motor. Why does a larger kv motor use a smaller prop? Why isn't it the other way? I would think it would take more power and torque to move a bigger prop. For instance the FT F-22 uses 800-1200 kv motor and around an 8" prop. You look at the RCPowers F-22, is bigger, heavier and they recommend using a 2200kv motor with a 6" prop.
Why is this?
First is size of a prop compared to motor. Why does a larger kv motor use a smaller prop? Why isn't it the other way? I would think it would take more power and torque to move a bigger prop. For instance the FT F-22 uses 800-1200 kv motor and around an 8" prop. You look at the RCPowers F-22, is bigger, heavier and they recommend using a 2200kv motor with a 6" prop.
Why is this?