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  1. D

    Controller for Mac Hub

    Update: There was water in the motor. The grease was a little like cottage cheese. Didn't see any obvious problems with the wiring. The hub motor covers were super tight, I don't know if they're supposed to release the bearings but they didnt, so a gear puller worked on one side, but I had to...
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    Controller for Mac Hub

    Thanks for all this!
  3. D

    Controller for Mac Hub

    Thanks for the replies! @amberwolf - Yeah, same bike! What a trip, seeing that old message. I don't remember how I solved that problem all those years ago but the battery fully charged gives me 53V. As to the original failure, I brought the bike out of storage a few years ago, charged the...
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    Controller for Mac Hub

    Hi, I have an old ebike from the 20teens I am trying to rehab. It's an old Em3ev (48V Mac 12t rear hub) kit and the controller failed (if that wasn't the original problem, it certainly is one now). The battery seems to be charging fine, and the hub motor was strong on its last ride (and was not...
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    Symptoms of a Damages BMS

    Thanks for the replies! @Beastie-It was a kids mongoose MTB seatpost with a welded offset to make it comfy for an adult. Very gnarly dirty off-the-clock fabrication. And it had a piece of plastic with a plug on it. Maybe the seat was worth a few bucks... I disguised it with an old milwaukee...
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    Symptoms of a Damages BMS

    Hi All, I'm riding on an EM3EV setup with a samsung 46.8v frame battery. Someone recently stole the seat and the batteries mount (ugly welded thing w/ no resale, wtf) so I had to improvise a way to connect the battery to the hub. While I was doing this I crossed the output wires and got a...
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