tsdz2 48v with 36v battery OSF

[pxl666]

hey
im running new tsdz2 48v motor with 36v battery and motor works , but power is very low . it kicks fine from 0 but decreases rapidly when i'm pedaling 12 - 15 kmh . is this related to voltage only or did i configure it badly ?

https://i.imgur.com/9BOTjYb.jpg

 

[Vbruun]

This is voltage related. You can try adding some field weakening, but it does not work all that well. You really need a 52 volt battery ideally.