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  1. S

    BBSHD needle bearing play

    Seems like some BBSHD batches have no play in needle bearing at all while others have more. After replacing the needle bearing with SKF and using new spare axle there is more play than even before for some reason. Not a credible source but according to chatGTP SKF needle bearings can wear out...
  2. S

    BBSHD noisier than expected after overhaul

    Is this kind of cyclical swirling noise normal for BBSHD after replacing bearings with FAG, SKF, NKE and 100cst shell gadus synthetic grease? The noise was starting to get somewhat less percievable by the end of the ride after some hill climbs. Hard to tell really...
  3. S

    Minimum clearance between mid-drive housing and suspension linkage bolts

    Is 0.63mm clearance between Maestro suspension linkage bolt head and BBSHD housing enough or it needs to be more to account for possible frame flex?
  4. S

    Unused BBSHD with noisy secondary ring gear bearing

    Turns out some of the BBSHD batches have high pitch scraping noise in bearings when pedalling. Not sure if it will be an issue when riding. <iframe title="vimeo-player" src="20250225_143059_001 on Vimeo" width="640" height="360" frameborder="0" allowfullscreen></iframe> Used overhauled...
  5. S

    BBSHD knocking noise

    What could be the reason for this type of knocking noise? Happens with secondary gear only. Looks like the pinion gear might not be meshing correctly since when removing the paper gasket the knocking disappears. Could try running it without a paper gasket but the the thrust bearing might get...
  6. S

    BBSHD nylon gear cover plate issues

    Has there been any reports about nylon gear cover plate casing uneven bearing preload? Turns out that's the reason why the pinion gear was so hard to turn from in some positions when the BBSHD was new.
  7. S

    BBSHD stuttering

    https://vimeo.com/1042780157?share=copy Is this hall sensor failure if the motor is studdering at medium to full RPM without nylon gear installed. Running on stock controller. No load current also is too high at 1.6A. According to debodgery channel on YouTube it's noisy hall sensor Tried...
  8. S

    Displaced wear pattern on BBSHD pinion gear

    The wear pattern probably was shifted due to forgotten metal flake in 16003 bearing bore by the factory. Lost the metal flake due to having to sort out other things so can’t confirm the thickness of metal flake. Will this result in improper gear mesh with proper 16003 bearing position...
  9. S

    How common are irregularities like these for BBSHD rotors?

    How concerning are irregularities like these in terms of causing weight imbalance, non-circularity and harmonic flux distortion? One side is smoother than other. I have seen only one picture with irregularities like these on old rotor version since these irregularities are easier to see mainly...
  10. S

    Scratched IPM motor laminations

    Does delamination resulting in 0.2-0.3mm gap and some superficial scratches justify replacement of IPM rotor? Google AI says possible shorts caused by scratches will increase eddy currents despite the fact that all of the laminations are shorted together by magnets and axle according to...
  11. S

    Bits of metal under 16003 bearing and cling film under 16001 left in bearing bores by factory in BBSHD.

    Might be the reason for uneven pinion gear axle drag and notchy 16003 bearing and uneven secondary gear wear pattern with possibility of micropitting. Will see if FAG bearing will last longer.
  12. S

    BBSHD scratched axle

    Does shallow 0.1 mm scratch which doesn't catch on fingernail justifies axle replacement? It's close to the left side below the bright reflection. Chatgtp says it will polish itself out by skf bearing in this case especially with extreme pressure synthetic grease. Protective covers or tapes...
  13. S

    BBSHD starts motor in PAS level 1 when charging phone from USB port

    Are there any similar cases being reported. So far haven’t stumbled upon anything like this in forums. Bafang keeps surprising. Previous issue: (throttle active for 1 second in PAS level 0).
  14. S

    Gear shift indicator solutions

    How many are trying to implement any rudimentary gear shift indicators on shifters without gear readout to avoid starting mid-drives in too high of a gear. Was thinking about one based on reed switch and LED to indicate when I get close to 1:1 ratio while shifting for a few years now. Could be...
  15. S

    Was there any ability to switch between street mode and sport mode on Cycle Analyst?

    Wasn't able to find any answers anywhere by doing quick search in this regard.
  16. S

    BBSHD throttle becomes engaged on PAS 0

    Any consensus why BBSHD with stock controller allows throttle to become operational for 1-2 seconds on PAS 0 with motor disabled? There has to be more information regarding to this issue since it's such an old motor.
  17. S

    How common is PAS level delay for BBSHD (level 9 still being active at level one for few seconds)?

    This often creates dangerous situations. Sometimes throttle also works at PAS 0.
  18. S

    Older BBS02/BBSHD displays with temperature readings

    Accidentally saw some older videos with BBS02 and the displays showed motor or controller temperature. I guess at some point Bafang decided temperature readings are not important anymore? Will have to find out the display model at some point.
  19. S

    EM3EV expected range

    Hard to tell without proper measurements but it seems like 20Ah 52V EM3EV triangle battery with high energy cells paired with BBSHD gives less range when uses sparingly only on hills (500m long, 9-17% @10-10 Amps) compared to previous setup with TSDZ2 and no name 36V 10Ah Chinese battery). TSDZ2...
  20. S

    How often do typically cadence sensors typically fail on a new BBSHD?

    After setting the slow start mode to 8 and stop delay to 10 ms the cadence sensor started working intermittently and then stopped working completely. It was working for a while when going back to old settings (4 and 100 ms) but then stopped. Only throttle works in PAS 1. They said that it's...
  21. S

    BBSHD gear cover preload

    Looks like tightening the gear cover also sets the preload on the thurst bearings, since the axle resistance increases too much when tightening the Lekkie cover to a specified 6 Nm. In some videos the specified torque for M5 bolts was 3 Nm. So is this actually used to deal in the preload on...
  22. S

    BBSHD slightly too wide for 68 mm bottom bracket

    When tightening M6 bolts there is a 0.5-1 mm gap left between the steel bottom bracket and fixed holder. This will prevent the fixed holder to sit in parallel with the bottom bracket when tightening down the M33 locknut rendering some of the serrations unable to bite in to the bottom bracket...
  23. S

    New BBSHD axle drag

    Just unpacked the BBSHD and it seems to have considerable drag/resistance with rubbing noise. Is that normal? TSDZ2 also had a bit of drag at the begging but then it reduced a bit after breaking in. BBSHD seems to have a lot more. Haven't found anyone else complaining about it immediately after...
  24. S

    ToSeven DM-01 (Buffalo) rotor type

    Did ToSeven DM-01 (Buffalo) also had IPM rotor like BBSHD or not. I think there was only one teardown video on YouTube.
  25. S

    BBSHD automatic PAS reduction at zero wheel RPM

    Can BBSHD be programmed so that it immediately goes to PAS level 0 when coming to a stop to avoid being launched in a heavy traffic. Experience with torque sensor on TSDZ2 says that you always have to start peddling really softly when forgetting to disable the motor, but with BBSHD the behaviour...
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