Bafang g020 hub motor, no. Of poles gear reduction etc

[oldskoolhead]

Hi, anybody know the number of poles and gear reduction on a g020 250w hub motor also the number of magnets for the speed sensor? Cheers

 

[E-HP]

Google results:

 

[AGS]

20 magnet poles
5:1 ratio
6 magnets for speed sensor

On a KT controller
P1 = 100
P2 = 6

 

[oldskoolhead]

Thanks guys

 

[jpl83]

Hi, anybody know the number of poles and gear reduction on a g020 250w hub motor also the number of magnets for the speed sensor? Cheers

I have the same question. I suppose that you are choosing the parameters of a KT controller
I tried to open the motor to see all that but I was unable to unscrew a single screw ...
I red somewhere 20 poles and reduction 1:5 so I put P1=100
But I find that the motor don't run as smoothly as my old Q100

For the speed magnets, I put P2 = 6
It must not be far from the reality because I get almost the same speed on the LCD3 than on my garmin

Version of motors an controllers change without enough informations ...
My G020 is told to be a 500 W motor (RM G020. DC 10 ) ..

 

[jpl83]

Sorry, I searched "G020", I found the question ,but didn't see the answer

 

[AGS]

G020 has same number of pole magnets, speed magnets and same gear ratio as the G060

The screws need a whack with an impact driver just to break them free. If you use a normal screwdriver the heads tend to get ruined and you end up having to drill them out.

G020 250w, 350w, 500w are all the same, just a different label/engraving for different markets.

 

[jpl83]

Thank you a lot ; I hope I shall not have to open the motor ...
I red that the RPM for 36 V was around 200 tr/mn, the same as my Q100
Nevertheless, it appears that the speed of the G020 decreases more rapidly in hills that the one of this little Q100. I have to rise the power
DO I have to ride quicker to get somme advantage of this engine ? (bad for consumption)