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    BBSHD Pre-Buying Questions and Answers

    I am totally lost and have no idea what i want, but think i want a bbshd. (or have a lot of questions)
    We recommend spending some time researching before you embark on your DIY project. Spend some time on our forums here: www.electricbike.com/forum/ , www.endless-sphere.com and also electricbike-blog.com. In the case of the forums we really suggest you join and make a post...the electric bike community is amazingly helpful.

    Will a 60v battery work with a BBSHD/BBS02?
    No, it will not. The maximum voltage battery that will work is one of our 52v battery.. anything more, and the bbshd will not turn on.
    ( the absolute limit of the FETs in the BBSHD/BBS02 is 63 volts. A 60V battery can reach up to 68v when fully charged )



    Which BBSHD will fit which bike?
    Every bike is different and we can't guarantee easy fitment with every bike. Sometimes you will have to tinker with it to get it to fit. Check out our forum for a list of builds with the bbshd with specific bikes: See this amazing resource for BBSHD building guides on specific bikes.


    What size ( bottom bracket ) of bbshd should I get and will it fit my bike?

    Click here for how to order the right BBSxx kit
    Read this article on how to install it: https://www.electricbike.com/removin...ket-cartridge/
    Also, if you are unsure, it's better to get the next larger size since we provide a free spacer kit which will allow you to easily size down...but sizing up is hard.


    Will you program my BBSHD custom for my requirements?
    We do not do custom programming, although we do program the drive to have the best settings we think it should have. If you want to modify these setting to fit your style you will need this programming cable:

    You will also need to read this article to learn to use the programming cable:

    Will a bbshd work with a 300 pound rider?
    Yes, no problem.. it is one of the only drive systems we would recommend for 300 pound rider and it will even climb steep hills as well. We have sold many BBSHDs to Pedicab drivers, and even with 3 people on the bike, they hold up fine.

    Will a BBS02/HD fit an hubcentric bottom bracket?
    It all depends on the hub shape of the bike. On some bikes, it is possible without changing anything; some will need a different hub centric adapter, some will need the frame to be cut and/or welded. For example, a Giant Seek 1 will not be able to receive a BBS series motor without major modification to the frame; take a look at the post on the Electricbike forum:
    This leads to the thickness or space available between the BBS02/HD motor and the BBS02/HD bottom bracket shaft, it’s around 11.4mm, so you better measure the thickness of the frame and adapter before hacking your precious bike frame.
    Knowledge base post on PF BB & eccentric ones

    I have a press fit bottom bracket and or a carbon frame, What to do?
    Depends on the PF type and the thickness around the frame, here is a nice thread that explains it all

    How do I wire my Luna battery to my BBS02/HD?
    The Bafang BBS02/HD comes with anderson connectors, our shark/dolphin/bottle packs comes with bare tinned wires, all the other soft packs comes with XT-90S connectors on the discharge side. To wire you new Luna battery we recommend reading this article first :
    Ron did a wonderful job explaining how to solder and and how to crimp. Just don’t forget to add the right connectors, the right lenght of 12 gauge of power wires and heat shrink tubing to your cart

    I am having problems getting my bbshd to fit. Where do i go?
    Read this article also refer to this thread for even more info.
    Last edited by Sebz; 10-19-2017, 11:52 AM.

    #2
    Hello, I'm in the planning phase of building and electric bike. Intend on purchasing the Bafang BBSHD mid drive and need some bottom bracket assistance. I've read some info on eccentric adapters, but there are plenty out there. Google is an outstanding resource, but this is so specific I'd like to narrow this down quickly. I posted some images of some measurements taken last night. If you know of any bottom bracket adapters that would help this build out let me know. Thanks!

    -GA

    Comment


      #3
      Some of your photos and measurements are not needed. Get all of that junk out of the BB and then measure the ID of the bare bracket it should be British ISO 33.6 - 33.9 http://en.wikipedia.org/wiki/Bottom_bracket Photo 3 shows the width maybe good but then you can make up the width with spacers.

      Comment


        #4
        While waiting for my battery to come back, I'd like to clean up the wiring harness. There is a 9" wire loop up the down tube on my bike. I'd like to get rid of the loop and connect the Luna side shark battery to the BBSo2. XT-90 connector for sure, but what about waterproofing? Elsewhere are are cautionary about dielectric grease. The thread above, on connecting motor & battery ends as an "error 404". Thanks in advance.

        Comment


        • Sebz
          Sebz commented
          Editing a comment
          Link fixed!

          Xt-90's are very good, just need a little dielectric grease to prevent oxidation.

        #5
        [QUOTE=John T;n41291]While waiting for my battery to come back, I'd like to clean up the wiring harness. There is a 9" wire loop up the down tube on my bike. I'd like to get rid of the loop and connect the Luna side shark battery to the BBSo2. XT-90 connector for sure, but what about waterproofing? Elsewhere are are cautionary about dielectric grease. The thread above, on connecting motor & battery ends as an "error 404". Thanks in advance.[/QUOTE

        https://www.electricbike.com/matchin...to-controller/

        Comment


        • Sebz
          Sebz commented
          Editing a comment
          Thank you, link fixed

        #6
        A simple method to determine if the ID of your bottom bracket is large enough for a BBSHD/BB002 is to remove all bottom bracket hardware and use a length of 1” pipe or rigid PVC to check clearance.
        The shaft of these mid-drives are 1” pipe.

        Comment


          #7
          I'm trying to determine if a BBSHD install will clear my chainstays. Can anyone confirm the diameter of the gear reduction on the drive side? This seems like very useful information, but I'm having a heck of a time finding the answer. The best I can come up with is about 125mm. Does that sound right? Sorry if this info is all over the place. I've looked and looked but no joy. Thanks!

          Comment


          #8
          I measured my installed BBSHD and it looks like 3”,(75mm), from sprocket center for reduction gear housing.
          Using Luna Eclipse 42t chain wheel its about 4 1/4”.

          Comment


            #9
            Has anyone published the 'spindle' length and threaded length for the different kits? And then what size spacers are provided?

            After referring to this and other forum articles I made mock ups and taking LOTS of measurements and still my trouble is specifically whether or not to get the 68-73 kit or the 73-100 kit. My wife's bike BB measures 73mm.

            Here's what I have: in order to clear the gear reducer and 42t Eclipse ring I will need to add 4mm BB spacers to each side of the BB to clear the gear reducer to chainstays, and then add 3.3mm chainring spacer to avoid the chainstay with the 42t Eclipse. This is with my mock up, I may need to add an additional 1-2mm to each BB side to get final clearance, and/or an additional 3.3 on the chainring (understanding I could run into crank interference). So, my concern is that the 68-73 kit may end up being too short, or will the 73-100 kit be too long to still thread into my BB?
            I can find no info on the different kit 'spline' length and threaded length to figure this out on my own without having someone measure an actual kit and send that to me, which I guess i'm asking for those dimensions if anyone has them.

            Comment


            • MPieczko
              MPieczko commented
              Editing a comment
              Spindle and thread length appears to be 20mm beyond the BB length of the kit. That is, a 68mm kit has an 88mm spindle with 20mm of threads; 100mm kit has 120mm spindle with 20 mm of threads, etc.

            #10
            Also trying to figure out how much wire I need for battery connection - would like to mount a 30q 6ah small battery in a saddle bag - not sure how long the BBSHD drive power cables & battery and are, and if it is recommended to solder/splice new wire in order to add length, or leave the original wire and connectors in place and just buy extra xt90 M/F pigtails to make an 'extension cord'.

            Comment


            #11
            How much noise does the BBSHD make? My wife wants a pretty silent unit for 'stealth' but have not been able to find anyone showing how the current kit sounds.

            Comment


            • calfee20
              calfee20 commented
              Editing a comment
              Nearly totally silent.

            • AZguy
              AZguy commented
              Editing a comment
              My tires make all the noise - you can't hear the BBSHD at all compared. I have a gopro on the handlebars and there is a sound that get's telegraphed through the frame that is clearly the motor (well most likely the gears) and it sounds loud on those videos but it really is extremely quiet...

            #12
            Originally posted by MPieczko View Post
            Also trying to figure out how much wire I need for battery connection - would like to mount a 30q 6ah small battery in a saddle bag - not sure how long the BBSHD drive power cables & battery and are, and if it is recommended to solder/splice new wire in order to add length, or leave the original wire and connectors in place and just buy extra xt90 M/F pigtails to make an 'extension cord'.
            I have done a BBS02 & a BBSHD and had plenty of wire to have the battery in the rack under seat area, hanging from the top tube, or a shark type on the down tube. Remember the batteries have at least an 8" pigtail.

            Comment

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