Gearing is 14/42 but in this video, through EPA and curves, the ESC was limited around 75% (that should give around 1500rpv, I really miss that motor ).
With the fan the Mamba Monster wonīt reach 140šF, it doesnīt matter how much you can abuse it, going to try 16/42 when the 1500 arrives and would try to take away the fan too. The only limit is the motor getting up to 175 with too much ease...