Bafang rear hub

[abelcher90]

Does anyone has experience with a bafang rear hub?? What amp does the controller have to be??

 

[Jeremy McCreary]

My ebike came with a 48V, 500W G020 Bafang hub motor and a 25A controller. No expert, but the controller seems adequate for my hilly terrain.

 

[abelcher90]

Thanks. What type of display and/or throttle are u using?

 

[Jeremy McCreary]

Assempled the specs below at the time of purchase (9/2022) — mostly from the official product page for my 2023 Surface 604 V Rook.

MOTOR
500W (750W peak) Bafang G020 Geared Brushless Hub Motor

UPGRADED MOTOR WIRE HARNESS
30Ah, can handle up to 120C current

DRIVE MODE
Drop-out torque-sensing pedal assist with overriding throttle

TORQUE
45 or 65 Nm (conflicting claims)

THROTTLE
Thumb, progressive, on-demand (up to full power at all non-zero assist levels)

CONTROLLER
SURFACE 604 Designed 12 MOS 48V 500W 25A, Smart

TORQUE SENSOR
IDbike TMM4 for 11t smallest cog

BATTERY
Reention 48V, 20Ah, 960Wh with Samsung 21700 lithium-ion cells and 1.2A USB port

DISPLAY TYPE
Bafang KD718 (new version, SURFACE 604-branded), 3.5" color LCD with 0.5A USB port

Everything listed here is still stock and going strong after 2,400 miles. That's all the info I've got.

 

[manman]

Hi hopefully some good advice,I have just received a 750watt 48v bafang rear hub motor.
My present set up is 48v 21ah battery,KT controller 36v48v 17amp with bafang 250watt rear hub motor,my question is upgrading to a 750watt motor I guess I would need to upgrade my controller to say 22 Amp.
Finally for safety would my 48v 21ah battery be sufficient enough for this motor and upgraded controller I am a beginner so advice much appreciated.

 

[Chargeride]

The weak point is the pushfit connector, though 22 amps is fine, I have melted them at 40 amps.

 

[manman]

Hi thanks for the speedy response sorry if I'm misunderstanding I'm not sure what the push fit connector is.so my battery is good and the controller too that's good news so no worries about blowing up on the way to work.

 

[manman]

 

[manman]

Hopefully my battery will be able to work with 750watt 48v bafang rear hub motor,with a 22a KT controller.

 

[Chargeride]

The one in the cable to the hub, carries the phase and hall wires.

 

[manman]

Aha gotcha thank you did you manage to view the photo of my battery is it sufficient enough.any input please

 

[Meghan Saunders]

My bike is already fast with Bafang 1500W rear hub, but the acceleration seems to be stuttering. It would be nice to increase the torque to enhance acceleration and hill climbing. The whole system is 52V, and I know it's not a one-part problem. Probably needs a controller and BMS support upgrade.

 

[Chargeride]

Smaller wheel, embrace the mullet.

 

[Chazmo]

My bike is already fast with Bafang 1500W rear hub, but the acceleration seems to be stuttering. It would be nice to increase the torque to enhance acceleration and hill climbing. The whole system is 52V, and I know it's not a one-part problem. Probably needs a controller and BMS support upgrade.

Not sure if it’s relevant, but stuttering can be a controller problem if speed sensing isn’t working. Are you seeing wild/crazy speeds on your display when the stuttering happens? Not that I have an answer to this problem, yet, but I did replace a controller (which seemed to fix it) on my Juiced RipCurrent S when I ran into that problem.