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  1. H

    BBS02 loud noise once per pinion rotation

    Today I ran my BBS02 the first time. Unfortunately it has a loud noise once per pinion rotation. Video below. I think the nylon gear is on the same shaft as the pinion, so it is also once per nylon gear rotation. The motor is new, just regreased. Video: Watch V_20240229_232626_ES3 | Streamable...
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    BBS02 Lekkie Grease Port

    I replaced the original drive cover of my BBS02 by the Lekkie drive cover. The BBSHD cover grease port can be closed by screw. The BBS02 cover grease port however not. How did you guys seal that grease port while riding?
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    Portable programmable CAN Module

    I am looking for a portable programmable CAN module that continiously reads some parameters from the ASI controller while riding multiple times per second. It needs to be compact and programmable, so that when an if-statement gets true, it will change a parameter in the controller. So for...
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    High Current Connectors with Plastic Housing

    Does anybody know high current single connectors with plastic housing like the XT150 and AS150, but for a higher current? All 8mm or thicker gold plated connectors I know either aren't single connectors or don't come with a plastic housing.
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    Hall Sensors vs. Encoder

    For a large DD hub motor with 23 pole pairs, do you see any advantage in using an Encoder (maybe at the inside near the axle and with a magnet on one sidecover) instead of bipolar hall sensors? Launch from standstill works very good with hall sensors. Would using an encoder be even superior? On...
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    Shielded Hall Wires for large DD hub motor

    Usually for DD hub motor outrunners, the hall wires go parallel with the phase wires. I sometimes have some vibrations in certain speed ranges at very high phase amps in hall based mode, so I would like to try shielded wire for the hall wires. What would you connect the shield to?
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    BBS02: How to pull bearing from motor shaft

    How can I pull the bearing from the motor shaft? There is no way to get around the bearing with a 2 or 3-arm gear puller. Picture below:
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    Which Connector is this (BBS02) ?

    Which connector is this exactly? I don't find this connector at JST. It is used for example in a Bafang BBS02 for the 6 pole connector on the Hall PCB. Pitch is 2.50mm or 2.54mm.
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    Eliminate Hall Sensor Noise

    I have vibrations/stuttering at high phase amps at certain rpm ranges which vary with switching frequency. This might be because of commutation errors caused by hall sensor noise. When measuring the hall sensor output voltage while the motor is engaged (but not turning. Hall state is not...
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    Old ASI BAC4000/BAC8000 (2019 or earlier)

    I am looking for an older ASI BAC4000 or BAC8000 which was manufactured in 2019. Please send me a message if you can offer me one of these. No wiring required.
  11. H

    Where to get ARMCO-Iron

    I am looking for a source to buy ARMCO-iron (nearly pure iron) to machine a back iron ring out of it. The ring will have an inner diameter of about 205mm, and will be 50mm wide and 4mm thick. Unfortunately here it seems to be nearly impossible to get suitable material.
  12. H

    Eltek Flatpack PCBs

    I need 2 PCBs for Eltek Flatpack2 with holes for terminal blocks. Please send me a picture of the boards if you have some.
  13. H

    Flatpack 2 HE 2000W or 3000W

    I am looking for some Eltek Flatpack2 HE 2000W or 3000W. New or used. Please send me offers via PM. Also if you have multiple units. Location: EU
  14. H

    Broken Bafang BBS01B Controller / Case

    I am looking for a broker Bafang BBS01B Controller. I just need the case, so the controller can be broken. Location: EU
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    Any broken Bafang stator / hall board

    Does anybody know where to get a new hall sensor PCB for the BBS02? The board has “2012“ written on it.
  16. H

    Reducing air gap to outer case

    On a G310 geared hub motor, there is a 1.6mm air gap between the OD of the stator case and the ID of the outer case. I want to improve heat conductivity from the stator to the case without adding oil. The plan would be to turn an aluminium ring, have it anodized in black and press it onto the...
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    Filling Air Gaps inside Stator Slots

    Filling all the little air gaps inside the stator slots with thermally conductive material would improve heat conductivity from the windings to the slot papers / stator laminations. Does anybody know a material that is suitable for this and gets into all those little gaps?
  18. H

    Configurable external 22S+ BMS

    I am looking for a solution like a 24S BMS (at least 22S) that will only be used for safety when quick charging at home without using a balance charger. It will not be on the bike, so size is not that important. While charging, my lipos will be wired 22S and the BMS can be connected to the...
  19. H

    Joining back iron with Aluminium case

    I plan to have a rotor (similar to common 205mm ID outrunner DD motor rotors) machined out of aluminium but as back iron for the magnets I need a 3-4mm thick iron ring. When shrinking the case onto the steel ring, there would not be enough friction at high temperatures because the aluminium will...
  20. H

    Hole Shot Device / Lower Fork Travel

    I am looking for a device (or ideas to build it) which significantly lowers my fork‘s travel while riding so I can use more torque without wheelieing when accelerating from a standstill or out of corners or when accelerating uphill. The only available system I found is called leveLOC (just...
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    Vent Hole to let Moisture escape

    Are there any long term experiences on DD hubs with a vent hole in one sidecover which is sealed while riding, but open when not using the bike? If the bike is stored inside, could this be an alternative to painting the stator with varnish?
  22. H

    (Burned) Mxus 3k Stator

    I am looking for a Mxus 3k stator. It could be a burned one as well because it will get a rewinding anyway. Location: EU
  23. H

    (Broken) V5 ASI Controller

    I am looking for a ASI controller with V5 hardware/firmware (if it was built in 2019 or before it's probably V5). It does not matter which model. It could be one with blown FETs as well. It only needs to boot and connection via bluetooth or USB needs to be still working.
  24. H

    Broken (or working) QS205 50H Stator

    I am looking for a QS205 stator. Preferable a broken one because it will be rewound and hall sensors replaced anyway. Best would be if it is located in the EU.
  25. H

    Vibrations because of BEMF Harmonics?

    On a 23 pole pair 51 slot direct drive hub motor I have vibrations at around 650rpm (250Hz), but only if phase current is still above approximately 300 phase amps at that moment. If I only accelerate with 50% or 70% throttle for example, there are no vibrations because phase current is lower. I...
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