Bafang BBS02 making noise

[bono]

Hey Guys,

My Bafang BBS02 was quiet for about 1100 miles. It started making a noise. Please see a short video

https://www.youtube.com/watch?v=VV7UvRi6bAc

Please could you let me me know whether this is something what can be fixed easily? The kit is about six months old bought from http://em3ev.net/.

Thank you!

 

[samsavvas]

Hey Guys,

My Bafang BBS02 was quiet for about 1100 miles. It started making a noise. Please see a short video

https://www.youtube.com/watch?v=VV7UvRi6bAc

Please could you let me me know whether this is something what can be fixed easily? The kit is about six months old bought from http://em3ev.net/.

Thank you!

You've got a screw loose! :lol: Seriously - that metallic rattle sounds like the old 'loose screw' syndrome! You need to repost this at the new Bafang mid-drive thread or maybe the BBS-XX fault-finding thread. There has been extensive discussion of 'loose screw' syndrome and similar problems there. I'm sure you'll find an easy solution. Maybe look at posts by Kepler to start with as I think he may have been the first to identify your issue and it's solution.

Savvas.

 

[bono]

Just posted there. Many thanks!

 

[opperpanter]

Just posted there. Many thanks!

Did you solve the issue? I'm on holiday so hard to read the whole fault finding thread on my phone.

 

[bono]

It was fixed under warranty.

 

[opperpanter]

OK. So no quick fix.

 

[bono]

Hi Guys,

I need to report the noise from the motor AGAIN. I have about 2800 miles on the motor and it works like this

https://youtu.be/rhUuzxlTy5o

History of the motor:
- Needed to swap the controller as asked by Paul (em3ev)
- I had this noise around 1200-1400 miles, do not remember exactly.
https://www.youtube.com/watch?v=VV7UvRi6bAc
- Around 1850 miles on the motor I had similar noise

https://youtu.be/e-qjojAQPzM

After a couple of emails with Paul, he agreed to repair the motor under warranty. I was informed that the gears were worn. They lasted 500-600 miles!?

It appears that the motor is silent for around 1000 miles only. I am commuting 26 miles per day. Flat terrain. Northern California - perfect weather for riding a bike. I am not doing more than 25 mph. When starting from the stop, I pedal until reaching 10-12 mph and then I start using throttle and gradually changing the gears from 4-5 to 7 (out of 8).

Questions:

- Do you think these are the gears that are worn and are making the noise? If so, is it easy to replace them? Where to buy the parts?
- What is the expected life of the gears?

I am commuting 500-600 miles per month. If I need to change the gears every second month, I consider the purchase of Bafang not a clever move…

Thanks!