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  1. Sideview07

    Bafang Max Error 21 at low gear

    BTW this the mid drive that i have at the moment on my bike with the spec at page 11
  2. Sideview07

    Bafang Max Error 21 at low gear

    @AHicks - u meant that motor torque probably reach it limit with me (90kg+) + bike (20kg) on it ? ha ha .. its torque only 80Nm. There are some parts of hills that really challenging 20% gradient, probably need to push coz i could hear the motor grinding. Amp wise - it was set to max 20A per...
  3. Sideview07

    Bafang Max Error 21 at low gear

    first thing that i did after i research initially. misaligning it and realigning it.. etc . works like normal at all gears as expected even change the sensor meter signal 1 to 2 (type of sensor) using SPEEED connection & USB cable, also same problem
  4. Sideview07

    Bafang Max Error 21 at low gear

    conceptually if i switch to the largest cassette cog , it should be less burden on the motor .. no ? eg. I am able to cycle up a hill with Power L4 (out of L5 max) with 36T cog quite comfortably but when i switch it to 42T cog with rest being the same, immediately the error occurs. I can repeat...
  5. Sideview07

    Bafang Max Error 21 at low gear

    Getting error 21 when riding a ejoysport Bafang Max 35V250W on the lowest gear (36T x 42T largest cog) when climbing uphill. It gets jerky like power cut in and out. Eventually within secs screen reboot. Changed the chainring to 32T and now even the 2nd largest cog 36T would have the same...
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