Speed Calculations?

um 4800kv for the 4.5 and 4100kv for the 6.5. oops 3100 for the the 6.5 i messed up ill fix it.


4.5 72/12 50.8
6.5 72/12 32.8
9xl 66/18 32.1
8xl 66/18 36.1



So a 9xl on 16 cells would be faster then an 8xl on 14 cells? Y is the 4.5 faster? I know the XL have more torque.