How to adjust Bafang 750 w middle drive motor to run well

[J8519]

I adjusted my motor to work fine with a 48v 16 ah haillong batery
Modifications :
1) a 42-44 teeth crank
2) a 7 speed cassete or freewheel with spacer if you have a 8-9-10 speed cassete , and the spacers help for a better chain allingnment - my cassete is 12-14-16-18-21-24-28 teeth

I only use my bike around town on flat roads and usualy only use the half smaller pinions

 

[J8519]

Minimum batery to run is 48v 16 ah
Recomanded : 2 bateries in paralel to have double the power and it will run at max speed for long distantes

 

[J8519]

 

[J8519]

3) Haillong batery connection problems:

a) the batery doesnt make a good connection with the craddle
and you need to bend the 4 connectors in a '' > '' form to make a good connection

b) the craddle has bigger diameter hole were the locker is and the batery will move back and forth when you push a little on it and you need to add some duct tape to push it back in the craddle pinns when you lock the battery , this will make your batery very solid , no more batery problems

 

[J8519]

4) my throttle makes the motor a little glicie when using or not using it and i remove it
5) if you what to make the pinions last longer ,you can use bmx pinions 3/32 to fit with the chain ,but it will shift only skypping 1 gear so you have to press 2 times for 1 gear and you need a 52 chainring

 

[J8519]

A 52 chainring and the bmx 3/32 cogs are for durability.

 

[J8519]

6) When you install the display , the gear selecter and the brake levers detach the handle bar from the stem completely and install the components on the handle bar and then atach it on the stem and adjust them how you think if best , because THE PLASTIC FROM THESE COMPONENTS ARE BAD QUALITY AND THEY WILL CRACK IF YOU FORCE THEM ON THE HANDLE BAR .