Announcement

Collapse
No announcement yet.

Bbshd failures and troubleshooting

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • paxtana
    commented on 's reply
    That's a good step towards troubleshooting. Try out some of the other steps here as well
    https://electricbike.com/forum/forum...t-still-moving

    Paying particular attention to removing any additional stuff you may have attached whether that is ebrakes or gearsensor, and seeing if you have (!) on your display.

  • jeffeby
    commented on 's reply
    Definitely not a battery issue.Tried it with a friend's 52v triangle battery exactly like mine with the same result. The motor usually tries to turn when I use the throttle, sometimes making it a half turn before it stops. Occasionally it will spin fast like it should for several revolutions before it dies. In assist mode for the most part you can barely tell there is a motor, sporadically kicking in for brief moments.

  • paxtana
    commented on 's reply
    Possibly a high resistance connection or the controller is going bad. If you are using a hardcase pack check the contacts between case and cradle. You can also bypass battery using charger as power source while testing on a stand to see if problem persists.

  • jeffeby
    replied
    Something has gone wrong with my BBSHD after a couple of weeks of riding. Almost a total loss of power. The Power indicator fluctuates wildly. There is quite a bit of drag when I walk the bike in reverse so I thought Nylon Reduction Gear had just gone bad. I ordered a new one and after waiting for a month for it to come off of Backorder I took the motor apart to find that the Nylon Gear looked just fine. Replaced it and regreased anyway, put it back together and it still acts the same way. Any ideas?

    Leave a comment:


  • Dyne
    replied
    Thanks for your reply. My battery was flown in luggage from usa to norway so it needed to be disassembled not to brake the rules. I assembled it here in norway but as I found out when I opened the battery, one of the welds had poor contact.
    I replaced the controller and rebuilt the battery. Its working well now.

    Leave a comment:


  • Sebz
    commented on 's reply
    Hey Dyne,

    Was your pack cold when you went out? temperature affect Li-ion batteries, read more here:

    https://electricbike.com/forum/forum...li-ion-battery

  • paxtana
    commented on 's reply
    If the display stays on and no error code and you have already unplugged all peripherals I would pull the controller and make sure you don't have a phase wire coming loose.

    https://youtu.be/W0Q33n-aI7U

  • Dyne
    replied
    Something has happened to my bbshd when it became cold and winter. Suddenly it's stops giving power. The display and speed works fine and it's says the battery has charge. It can stop halfway up a hill and it won't give any power when I pedal. I put on the throttle and it's the same thing. It doesn't give any power regardless.

    Leave a comment:


  • Bizman
    replied
    I wanted to update the forum about my repairs regarding post #34 above concerning my BBSHD humming at low speed and the 750c display reading 28 watts "while pedaling", using "0" PAS.

    Replacing the controller (covered under warranty) solved the problem with the display reading 28 watts while pedaling using "0" PAS, it now reads "0" watts.

    I was informed from Luna that the hum is normal in the later 2017 model BBSHD motors. Here is their response:

    "Well looks like it’s normal, Bafang changed the firmware a couple months ago and the newer hums slightly too. The previous version (early 2017) does not".

    I would like to thank everyone from Luna and this forum who had ideas with things to check! It took a bit to sort out, but things look to be operating normal now with the display and per Luna's discription of the problem with the hum. Thanks very much everyone!

    Leave a comment:


  • Tobybikeguy
    replied
    I had a weird "glitch" today... Rode to work just fine, made a trip home and back in the afternoon just fine, but after work, I turned it on and it had the "check engine" indicator showing and said error 30, and the assistance and throttle weren't functioning, turned it off and on a couple of times thinking that would help, but no luck, so I started pedaling home. On the way, the speedo started working again but no power still, and then it gave me an error 7. Got home and inspected all the wires and connections, nothing stuck out, but I noticed the speed sensor wasn't lighting up, so i rechecked the connector and that seemed get it to start flashing when the wheel was spinning and magnet was recognized, but still no power, until (by some fluke) I spun the wheel backwards and when the magnet passed the sensor the light went solid, and everything worked again... Anybody encounter that before? or know what the deal is?

    Leave a comment:


  • Bizman
    commented on 's reply
    Thanks paxtana for identifying my mistake of calling the display the controller. I have updated my post to reflect the change and to post a better description of my problems so you may want to reread it. I am not real computer savy with videos or know exactly what you want a video of and don't know what streamable means?

  • Bizman
    commented on 's reply
    Thanks cajk for the ideas and identifying my mistake of calling the display the controller. I have updated my post to reflect the change and to post a better description of my problems so you may want to rereading it. I will check the wiring and perhaps swap the displays to see if that helps pinpoint where the problem may be? It may take a couple days to do this but will report back. Thanks again!

  • Bizman
    commented on 's reply
    Thanks paxtana for the correction when referring to my display as the controller, I have made the changes to my post and wrote a better description of the problems so you may want to reread my edited post. As far as video and streamable I am not real savy on the computer and don't know how to do that?

  • cajk
    commented on 's reply
    The thing with the buttons you push to operate your motor is called a "Display". Your wife's display acts "normal". Your display is acting "different" (not normal). Since you have two identical setups then you have a easy way to troubleshoot. First, check the wiring and connections to and from the displays on both bikes. Are they EXACTLY the same? If so, then try swapping the displays between the bikes. Does the display on your bike your bike now look normal, and your wife's look abnormal? In that case, the display that was on your bike originally is bad. OR, if the problem stays on your bike regardless of which display is fitted, then the displays are both good, and the wiring on your bike is screwed up somewhere.

  • paxtana
    replied
    Bizman:
    The 750c is a display not a controller.
    Try taking a video and putting it up on Streamable

    Leave a comment:

Working...
X