My Axial SCX10 has a 40 T eagle racing brushed motor connected to a Mamba max ESC using a 213% drag brake.

An hour of driving in rough terrain and lots of climbing will see 1000mah withdrawn from the 2S 4000mah 20c Lipo.

Turning the drag brake down to 50% gives a modest improvement of around 10-15%.

cheers.