bpmessenger
1 µW
- Joined
- Jun 9, 2022
- Messages
- 4
Hi all. Hopefully someone can help me here (apologies in advance for the long post but will try to give as much detail as possible)
I have a BBS02B 750W which was fine for the past few months (bought maybe a year ago, max). Recently, when hitting the throttle, or pedaling, the motor has started applying power and not applying power, repeatedly. Essentially jerking the bike forward in little increments. like hitting the throttle over and over on and off.
Key Stats & Tests
Please help as this is my only means of commuting!
I have a BBS02B 750W which was fine for the past few months (bought maybe a year ago, max). Recently, when hitting the throttle, or pedaling, the motor has started applying power and not applying power, repeatedly. Essentially jerking the bike forward in little increments. like hitting the throttle over and over on and off.
- When lifting the back wheel off the ground it seems to spin no problem (though even on 4 it seems somewhat slow).
- Every so often when it gets it rolling it'll hold power at the proper speed, but generally when pedaling up to speed it still jerks on and off
- I drive it in a pretty easy gear/higher RPM so to let the motor spin up and limit the initial torque required.
- I have noticed recently a "Error 30" coming on screen mid ride (then disappearing). Sometimes I can fix it when when a cable could be jiggled near the motor? Though the bike and display never shuts off and still provides power with the error showing- i am afraid one of the controller's wires between the frame and motor could be crushed? - battery line has no compression
- I've read it could be low voltage on the battery, but the battery is new, always topped off over night and never ridden below 3 cels.
Key Stats & Tests
- The battery is only a few months old
- 850 miles total on it and the motor
- Ride it 3x a week for 7.5 mi at a time 2x a day
- Plugged in a new display and no difference
- Changed the harness cable and no difference
- Felt like a faulty break lever but likely not.
- I have a spare controller to install, but that would be a huge pain to re wire and solder if it's something else.
- The motor may also need a stabilizer since it drops and flips up during application of power, but that never was an issue before and I'd assume it would still run.
Please help as this is my only means of commuting!