Search results

Date Relevance Most replies

  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

    BBS-FW: Open Source Firmware for BBSHD/BBS02 Controller

    Seems like there is lower maximum rpm and some stuttering motor behaviour with one controller with open source firmware for some reason while maximum rpm remains higher and the motor runs smoothly with open source firmware on another identical mcu type controller. Hard to tell without tachometer.
  3. 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...
  4. S

    Minimum clearance between mid-drive housing and suspension linkage bolts

    Shame already put on additional 1mm spacer resulting in 1.6mm clearance. Someone from electricbike.com forum also ended up increasing the clearance to be on the safe side.
  5. 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?
  6. S

    e-bike headlights 2025. What's good ?

    Why not use low CCT led emitters with high R9 value instead for more visual information in scotopic/ectopic conditions to computer Purnkinje effect? Knowing which headlights can be reflowed or modified with emitters such as SST-20 as a starting point is another issue.
  7. 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...
  8. S

    BBS-FW: Open Source Firmware for BBSHD/BBS02 Controller

    I wasn’t able to see I can’t see any new quadratic throttle options in 1.5.0 version.
  9. S

    Bikes that are Compatible with a BBSHD

    Turns out there are two options for giant anthem x2 2009 with BBSHD. Either leaving recommended 2mm chainstay clearance with spacers while losing ability to position the motor higher against the downtube since the lockring bracket tabs are hitting the frame or going without spacers while leaving...
  10. 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...
  11. S

    Bikes that are Compatible with a BBSHD

    It fits but some of the suspension pivot bearing housings are distorted due to rust and requirement of specific bearing removal technique at first try to avoid damage (start with socket to dislodge, then continue with slide hammer and heat) since Maestro bearing tool kit is currently...
  12. S

    Bikes that are Compatible with a BBSHD

    Will 68-73mm BBSHD fit this giant anthem x2 with threaded bottom bracket (according to description)?
  13. S

    New BBSHD axle drag

    The drag probably was due to metal shavings left in the bearing bore of pinion gear bearing resulting in misalignment and notchy bearing. The bearing bore might be out of round now since I couldn't align the new FAG bearing properly. It's seems to have normal smooth drag now but for how long...
  14. S

    BBS-FW: Open Source Firmware for BBSHD/BBS02 Controller

    Can't access the sport mode by pressing the brake lever and power button anymore with 860c display. Was able to access it once but not anymore. No problems with dpc-18 display. Turns out 860c display doesn't allow access to sport mode when password is turned on.
  15. S

    BBSHD - has always seemed to have high resistance when un-powered - Suggestions?

    Turns out nylon gear cover plate was causing pinion gear drag in some positions due to uneven bearing preload. After reducing the diameter of the radial part of the aluminium plate in makeshift lathe the preload can be adjusted. Hopefully those three m6 bolts and threadlock will be enough to...
  16. 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.
  17. S

    BBSHD stuttering

    Daggs said it's normal for skf bearings to go stiff initially. Actually the spare motor core also jerks randomly at full RPM. Maybe it's normal for these motors when unloaded due to torque ripple? https://vimeo.com/1043137623?share=copy
  18. S

    BBSHD stuttering

    Cleaning and squeezing the spade connectors didn't help. Hall sensors seem to be normal. Only newly installed skf 629 bearing has become excessively stiff and feels dry. After swapping the rotor no load current dropped from 1.2A to 0.8A and random jerking stopped. Now when trying the spare...
  19. S

    BBSHD stuttering

    Fractured IPM rotor magnet could be another possibility? Although it's typically harder to fracture magnets if they are glued to something or incased. The behaviour seems similar to a different motor in the link below. False positive or incorrect wiring is said to be the cause of higher than...
  20. 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...
  21. 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...
  22. S

    How common are irregularities like these for BBSHD rotors?

    Could it be that spare rotors are sold as factory rejects since original rotors seem to be smoother so far but they also suffer from delamination? These seem to be more like medium cost machines compared to hub motors and cheapest mid-drives.
  23. 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...
  24. S

    Scratched IPM motor laminations

    Without taking it apart it's impossible to find bits of metal and cling film under the bearings left behind by the factory.
  25. S

    Scratched IPM motor laminations

    Someone on high voltage discord also reported the same issue and it resulted in excessive vibrations at high speed, excessive heat and metal shavings in stator. At night speeds rotor gets pulled apart and gaps between laminations make in worse due to distortions in harmonic flux density. So it...
Back
Top