Need motor simular to Lehner 1930 or 1940

when you are talking about the L motor are you taliking about the Feigao 540 Brushless motor?

Do they have more torque than the 1512 motors?

I really want the motor that has the most torque when running on 11.1V and runs up to about 40,000rpm without geting too hot running this high gearing.

In the Neu motors the 1512/1D or 1512/1.5D even the 1515/D motors look ok but will they handle the hight gearing ok?