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Bbshd failures and troubleshooting

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  • 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:


  • Bizman
    replied
    Model: BBSHD
    Display: 750c
    Battery: 52 v 20 ah PF cells
    Around 200 miles, about 2 months use with light motor use

    ​​​I am having what may be a few "possible" problems.

    1). When "pedaling" at low speed with display on and using 0 pas there is a hum coming from the motor, is this normal? When I stop pedaling, turn the motor on, or when I turn the display off the hum stops.

    2) When my display is on and using 0 pas my controller consistantly reads 28 watts.

    I built 2 of these at the same time (1 for my wife). She said at one time hers did make the hum using 0 pas while pedaling. Then like mine, when she would stop pedaling, turn the motor on, or when she would turn the display off the hum would stop. She said now hers does not seem to make the hum anymore using 0 pas. When her display is on using 0 pas the watt gauge shows 0 watts and has always worked this way. I would think this is the way it should be.

    Any ideas on the hum and/or why my watt gauge would be showing 28 watts, both while using the 0 pas mode?

    Thanks in advance for any help on this!

    Last edited by Bizman; 10-03-2017, 08:15 PM. Reason: EDIT: To make the desription a little more clear

    Leave a comment:


  • Bertil
    replied
    When I opened my bsshd tha axle and clutch were still in the lid but I greased what I could see. Thx for link, useful.

    Leave a comment:


  • paxtana
    commented on 's reply
    All the vids are on this link https://electricbike.com/forum/forum...e-and-greasing

  • Bertil
    replied
    Do you have a link for your video? I watched one by fuzzyfriendly....something.

    Leave a comment:


  • paxtana
    replied
    No it's fine to add more grease and mix it in.
    I made a youtube video on doing this, not sure if you happened to see it. In the video I just smeared more right on top of the existing grease. There's other videos showing same. No problems reported.

    Leave a comment:


  • Bertil
    replied
    Yes, I have a BSSHD, not yet installed. Seems to me as a lot of people add Mobil 28 aircraft grease. I guess there already is some grease in there so I wonder if there could be a problem adding another sort of grease to mix with what's already there? I imagine it would be tricky to get all original grease out of there?
    ​​
    ​​​​​

    Leave a comment:


  • paxtana
    commented on 's reply
    You mean on bbshd? Clutch is hard to get to on bbs02 (one of the reasons why HD is a big improvement) but sure, adding a bit of grease to an hd doesn't hurt and is easy, so why not? Just make sure to watch the videos on how it goes back together!

  • Bertil
    replied
    I am on my way to complete the stup of my first electric bike. Next week I hope.... Any way, I have read a lot of people add some grease on the chansade (where the clutch is), preferably mobil28 so I bought some of that stuff. Should I add that grease now before testning or should I wait? Any rekommendation?

    Leave a comment:

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