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    what is a bsb 1?


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    paxtana, Any chance you guys sell the end cap screws to your cnc pedals separately? I seem to have lost one on a recent ride.

    Comment


    • paxtana
      paxtana commented
      Editing a comment
      I got one from a right hand blue pedal. Seems like it should work but no promises. $6 shipped, pm me if you want it

    I need some suggestions on installing a regenerative system to my trike to 750 watt 36 volt
    Presently was set thinking about a DC motor and a voltage regulator going back to the system direct as 36 volts but I'm not sure.
    was wanting to mount it to the shaft for the rear wheels to the bottom Deck with a battery box is in some type of framework up for a drive belt and some way to engage the genbrake
    Please help GM

    Comment


      I have a bafang bbshd with a shark pack 52v about two years old and bafang color display, setup has about 40 charge cycles .
      last two times out, I experienced full shut down: blank display no response from power button, about 1/2 way through normal battery range. Motor and battery barely warm to the touch. Got home an hour later, as soon as I put it on the charger, it powers up. I charged it for 1 minute, took it out it lasted about 3 minutes then full shut down again, plugged it into charger and it powered up .

      this has happened twice in a row, no sign of low voltage cut outs or any warning at all, and as I said probably 1/2 spent battery.

      i have three of these setups have never had this issue before.

      whats happening?

      thx
      MA

      Comment


      • paxtana
        paxtana commented
        Editing a comment
        Sounds like voltage sag is causing the battery to hit low voltage cutoff. The older the battery, the more the sag. Other factors also affect how much sag you see, such as what voltage it was long term stored at over the winters, what temp it was when using it etc. we have more in depth info on sag and how to best care for a battery on the battery documentation master repository https://electricbike.com/forum/forum...ter-repository

      • pho
        pho commented
        Editing a comment
        It is likely the BBSHD controller is programmed to cut power when battery sags below a certain voltage. If you have a programming cable you can easily lower this setting (check the hackers guide to BBSxx programming article). Myself, I experienced this when my 48v battery goes below 41 volts. I can easily set this to 38 or 39 or 40 volts, but that will put more stress on the battery and shorten its life. Also the battery BMS in the battery itself might be programmed to not alIow voltage to sag below a certain level, as well, but that shouldnt cut power, only limit power as the battery gets close to empty. I have the 860c display, but there are at least half a dozen other display models that may behave differently. what display are you using?

      I’m very familiar with your recommended battery care, I store it over the winter with 80% or less, charge at 3 or 4 amp setting, and don’t charge when hot. A similar build I did(48v shark) at the same time 2-3 years ago, has like 300+ abusive charges by a teenager and never had this issue, the battery has about half its capacity but it never did a total shutdown.

      Comment


      • paxtana
        paxtana commented
        Editing a comment
        Fair enough.

        Other considerations would be even physical damage could cause voltage sag, like if the battery was dropped or maybe the bike fell over at some point over the years, or got into an accident etc and caused a dented cell... that imbalance would show itself in sag.

        Keep a close eye on voltage next time you use it and see if you see a voltage drop prior to cutout. That's an easy test to do though by no means definitive, it's a start. If you want to get technical open the pack and test the cell banks.

      • MAsGarage
        MAsGarage commented
        Editing a comment
        Ok I’ll try to get it to die again and I’ll keep an eye on the voltage ( but it happens suddenly so I might miss it)

      My Bafang BBSHD crank arm pedal threads got stripped today. My left pedal fell off at the very end of my ride (cool). I ordered Luna's upgraded crank arms when I got home. I think there are 4 possible explanations for this.
      1) I over tightened the pedal
      2) I under tightened the pedal
      3) the crank arm was defective
      4) the default crank arms from bafang are not durable enough.
      (Note to Luna: I got the kit from em3ev, not Luna. As it is one of the most highly recommended sellers when Luna is out of stock, which is often)
      I have not really done any hardcore trails or taken many roots or rocks yet, and the build itself only has about 166 miles of mostly road, easy single track and fire road riding.
      So, note to everyone who DOES want to hit the trails hard, catch some air, and live through a crash. You might need to get better crank arms than bafang will provide you.
      I am hoping Lunas upgrade will prevent this from being a problem in the future, given I don't do stupid things or crash hard.

      So, my question is, Which problem do you think is the most likely cause (1-4)?

      Comment


      • paxtana
        paxtana commented
        Editing a comment
        Probably a combination of factors, or maybe it was cross threaded. But yes the stock cranks use relatively soft metal.

      • MAsGarage
        MAsGarage commented
        Editing a comment
        I have the stock bafang and crank arms in my Full Off-road 2500 watt Full suspension monster. I jump all the time and thrash it! Never had any issue with the crank arms!

      why does the luna wolf battery pack have multiple inputs and outputs?

      Comment


      • paxtana
        paxtana commented
        Editing a comment
        So you have backups in case anything ever happens to the original connectors

      • pho
        pho commented
        Editing a comment
        you can also use the 2nd discharge port for a light or other high voltage DC accessory.

      Originally posted by pho View Post
      My Bafang BBSHD crank arm pedal threads got stripped today. My left pedal fell off at the very end of my ride (cool). I ordered Luna's upgraded crank arms when I got home. I think there are 4 possible explanations for this.
      1) I over tightened the pedal
      2) I under tightened the pedal
      3) the crank arm was defective
      4) the default crank arms from bafang are not durable enough.
      (Note to Luna: I got the kit from em3ev, not Luna. As it is one of the most highly recommended sellers when Luna is out of stock, which is often)
      I have not really done any hardcore trails or taken many roots or rocks yet, and the build itself only has about 166 miles of mostly road, easy single track and fire road riding.
      So, note to everyone who DOES want to hit the trails hard, catch some air, and live through a crash. You might need to get better crank arms than bafang will provide you.
      I am hoping Lunas upgrade will prevent this from being a problem in the future, given I don't do stupid things or crash hard.

      So, my question is, Which problem do you think is the most likely cause (1-4)?
      under tightened

      Comment


        For the BBSHD 100mm motor, what is the width between the part of the motor (secondary reduction gear housing?) that touches the drive side bottom bracket, and the outside surface of the motor on the drive side where the chainring is mounted? The chainring offset guide shows the width as 33.85mm for the 68mm version of the BBSHD. Is it the same width for the 100mm version of the BBSHD?

        Thanks!

        Comment


        • paxtana
          paxtana commented
          Editing a comment
          If you are asking if the secondary reduction gear housing itself is the same width on all motors, yes it is. If that is not what you are asking could you clarify?

        • TaylorN
          TaylorN commented
          Editing a comment
          Yes, that is exactly what I was asking and hoping for. Thanks!

        I have an error popping up.

        H21

        and it shows a picture of a transmission in the bottom right corner of the display.

        sometimes bike turns off.

        error goes away sometimes.

        what is it?

        Comment


        I just bought a 73-100mm BBSHD kit to convert my 2020 Kona big Honzo with Powerspline 73mm BB. Should I have gotten the 68-73mm kit?

        Thanks!

        Comment


        • paxtana
          paxtana commented
          Editing a comment
          Kind of depends on your chainstay. You can definitely make a 100 work on a 73 with spacers and special mount brackets etc, and you might even have to on a 73 if your chainstay flares out in such a way that it prevents fully inserting the motor into the bottom bracket shell.

        Good morning, Can I use a 36 volt shark battery on a 52 volt system?

        Comment


        • HIGHVOLTAGE
          HIGHVOLTAGE commented
          Editing a comment
          Probably not. Depends on the motor system though. Some of them do accept 36v - 52v but I would double check the motor specs to be sure.

        • Bullfrog
          Bullfrog commented
          Editing a comment
          Your motor will probably be OK, just spin faster...BUT your controller is the issue. If it is capable of 52v then your OK...just have to check the specs on your controller.

        Eric I hope you can help me and are staying safe and secure. I have a surly with the bbshd and a Phaserunner with CA3 on it thing is a rocket i am a big guy and I messed up the derailer when I switch out tire so I tighten it to much and the gear sensor went out and I buttered the Plastic gear...No prob I had bought the metal upgrade from you and I figure I will update it I have replaced a lot of plastic gears (4) I ride on beach and am 6'8 and 280 so its alot of torque on the motor.. Anyway i replace the metal gear rebuilt all plug it all look good on CA3 the throttle was not working but that might be a connection the PAS works but the engine is just spinning not engaging the spoket Did I blast out the clutch too or put the gear in backwards I did think you could with the design but I would like some direction to figure out before I rip all apart thanks Have a great Memorial Day

        Comment


        • paxtana
          paxtana commented
          Editing a comment
          Sounds like you need to open it back up and see why it is not turning.

        • ncmired
          ncmired commented
          Editing a comment
          Sounds like the metal gear is in backwards (which a handful of posters have done) - per a note on the metal gear page, "the bearing on the gear is stamped made in Germany on one side. Install this with this stamp facing down". By chance do you remember which way your gear is?
          Last edited by ncmired; 05-22-2020, 12:29 PM.

        I must have put it In wrong way it was difficult to get on the spindle I will rip apart again and switch it all else seem to be working except my throttle for some reason I have a spare thanks thought that might be it

        Comment


          Washing Sur-Ron: Proud owner of a Sur-Ron and constantly fighting with my 10 year old son over who gets to ride it. Ordered a second bike yesterday! Time to clean the bike but scared to blast with water. Can't find anything on the knowledge base.

          Should we remove battery? Switch the breaker and leave in? Or just try to avoid power washing the motor / electrical components?

          Comment


          • intramorph
            intramorph commented
            Editing a comment
            Do not power wash the motor or any other electrical components. Water and electricity do not mix very well.
            A stream of water's fine but try to avoid water under pressure.
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