Very true, from a power to weight standpoint, hubmotors are absolutely horrible, horrible efficiency aswell. And even their burst power, IMHO there best feature, cannot really be used as they seem to reach magnetic saturation before anything impressive happens. BUT, That's an HX motor that was tested to its flaming plasma death, not an X5 IIRC. Having become quite intimate with the insides of both, I can say that an HX motor has about 1/2 of the Iron a X5300 and about 1/3 the thermal mass, not being attached to a massive aluminum casting. I'm betting that an X5300 hits saturation at about 14kw, and this new X5 at about 18Kw. and Even at 60% average Efficiency,
Believe i or not.. My X5303 at 100km/h and 8kW is 80% efficient
.. and .. this is good to see that with the SWBLUTO and Ebikes.ca simulator, i get the same result..
At 11kW and 113km/h it is still 78% efficient
As well.. the 113kmh air cooling help keeping the motor coller
I am impatient to see the results with the 5403