CharlesM99
New member
Hi all, I'm new here but it looks like a great place to learn more about e-bikes!
I bought an older non working E-Bike for next to nothing, just to mess around with and learn more about how these things work. I assumed the only issue was the battery was dead, but I think I'm wrong about that!
The old battery was definitely dead so I built a 7s7p battery with 18650s, which seems fine, but I haven't been able to put it through the pases yet. Because the bike still doesn't work properly but it turns on now, the controller on the handle bar seems to work (LEDs light up and I can adjust the assistance level), the pedal sensor by the cranks blinks red when pedaling but I'm not getting any pedal assistance out of the motor.
Any ideas what I should check next?
The bike has a front hub motor labeled as "Trio", model number bfswxb24v250w185r. I think that is a rebranded Bafang motor? I can spin the motor by hand, but there is some resistance and it comes to a stop pretty quickly.
The controller has two brake sensors going to each brake lever. If those go bad seems like they could prevent the motor from getting power. Seems like I could disconnect them and maybe add a jumper to make sure they aren't causing any issues.
The controller says it expects 1.2-4.4v for the "speed signal input voltage". I'm guessing that is the pedal sensor, so I'll check that out tomorrow.
Any input or advice would be greatly appreciated!
Worst case I'll get a new controller and front hub motor and be done with it!
I bought an older non working E-Bike for next to nothing, just to mess around with and learn more about how these things work. I assumed the only issue was the battery was dead, but I think I'm wrong about that!
The old battery was definitely dead so I built a 7s7p battery with 18650s, which seems fine, but I haven't been able to put it through the pases yet. Because the bike still doesn't work properly but it turns on now, the controller on the handle bar seems to work (LEDs light up and I can adjust the assistance level), the pedal sensor by the cranks blinks red when pedaling but I'm not getting any pedal assistance out of the motor.
Any ideas what I should check next?
The bike has a front hub motor labeled as "Trio", model number bfswxb24v250w185r. I think that is a rebranded Bafang motor? I can spin the motor by hand, but there is some resistance and it comes to a stop pretty quickly.
The controller has two brake sensors going to each brake lever. If those go bad seems like they could prevent the motor from getting power. Seems like I could disconnect them and maybe add a jumper to make sure they aren't causing any issues.
The controller says it expects 1.2-4.4v for the "speed signal input voltage". I'm guessing that is the pedal sensor, so I'll check that out tomorrow.
Any input or advice would be greatly appreciated!
Worst case I'll get a new controller and front hub motor and be done with it!
