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    Hub motor repair: hall sensor edition

    Momentarily ignoring the wisdom of buying a cheap bike from the lowest bidder, we took such a vehicle slightly outside of its operational envelope this weekend (a 20" fat bike on +1 "blue" single-track) and, according to the error the controller is throwing, killed one or more Hall sensors...
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    BESST tool dependency and availability

    As I understand it, the BESST software is dependent specifically on the BESST tool, and will not work with any of the DIY USB interfaces. I'd be very happy if that's not the case, but it doesn't seem to be stated unequivocally anywhere. Even so, the sum cost of the parts to build a DIY...
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    Freewheel systems: redundant in mid-drive machines?

    As I work through my hub issues, I've been thinking dangerously. Is the ratchet system in our rear hubs redundant to the ratchet or similar engagement system that many mid-drive bicycles appear to implement? Without trying to clumsily recreate from first principles the rationale behind a rear...
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    High-strength freewheels or freehubs

    Any hub can probably handle a high power mid-drive once or twice, but what hubs are you all using for these multi-kilowatt motors to dump 100s of Nm of torque into a wheelset, especially once gearing is considered? The 3-pawl "Quanta" Ali special hub that came on my commercial bike decided that...
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    State of the hackable motor

    Given the current unfriendliness of Bafang's CAN bus implementation (and, presumably, the similarly locked-down and otherwise uninspiring offerings by Bosch, Shimano, and others), I'd like my next bike to be a build involving reasonably manipulable electronics. Doesn't need to be...
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    2022 M2S Ultra HT (hardtail fat-bike) review

    First post, so please bear with me. I'm late to the e-bike game, but have been watching for years. Long-time programmer and hardware hacker, moderately experienced cyclist. This is my first electric bicycle, but I've put hundreds of miles on electric rentals (typically 3-speed IGH). My spouse...
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