Pole Count and Reduction Ratio for Q128H hub motor

[TroySmith80]

Does anyone know the pole count and gear reduction ratio for the Q128H rear hub motor?

I'm setting up my S-LCD3 unit and need that info to get the speedometer reading correctly. I will email BMSbattery to ask the same question but i thought a post here would be helpful for anyone else who may have this question.

 

[TroySmith80]

For posterity, here is the reply i got (after a few back and forths in order for us to understand each other) from BMSBattery

Hello  Troy


The motor gear reduction ratio is 13.2 and the number of rotor magnet pieces is 16

the PI=13.2*16=211.2
 

Sincerely Yours, 

 

Sophia ma

BMSBATTERY  Co., Ltd.