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    Mistake while wiring controller

    You say "these 2 connectors" but then say "not the same as the image", kinda tough without more information. The only connectors with that many wires would be the motor/hall plug and the display plug.
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    Power cuts out

    Check the connections from the battery mains to the controller, is it a setup that involves metal contact strips typical on some removable battery setups?. With a poor connection and the heavy load imposed by acceleration the controller gets "starved" for current and shuts down. Mine would do...
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    Connecting ebike controller (ignition wire and thumb throttle wires)

    Oh, OK I learned something new today then. With mine it initially started rotating in the wrong direction so I used the "self learn" wire and corrected it. I'm on the fence about these brainpower units, with the LCD display you have a lot of information but it's unclear how accurate it is. It...
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    Connecting ebike controller (ignition wire and thumb throttle wires)

    Maybe I can help, I just installed the same controller, my motor, like yours, has no halls, just the 3 phase wires. It still works but will "shudder" far a second or 2 sometimes at startup, this is normal and giving a slight pedal boost upon starting minimizes this. Try and make sure the 3 phase...
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    Brake connectors

    OK, I see, just find 5 V somewhere and then they can be adapted. I might just use the existing wiring to hook up a kill switch which would be a simpler solution, thanks again for the help and info, I've been without my bike for 3 weeks now, I'm getting the itch to ride and check out this new...
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    Brake connectors

    Thanks for the swift response, I grabbed my DMM then taped one lever shut and left one open, surprisingly, I saw no continuity between ANY of the 3 wires on either side. F-it, I'm just gonna do without them for now.
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    Brake connectors

    Bought a Brainpower 350 watt controller to replace the original, throttle, phase, PAS all hook up fine but my brake cut-outs were a 3-wire connector, ( red, green, black) the new connector is a 2-wire, (Black+white). So I'm assuming the original worked on some sort of hall arrangement?, is it...
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    Motor doesn't spin freely

    I replaced a bad mosfet on my controller, it lasted 3 months then the entire controller wound up going into a dead short. I then just replaced it since these 350 watt controllers are fairly cheap. The mosfet I used I got off Ebay.
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    eBike related abuse

    You might want to check local laws, FL has an ordinance where E-bikes are not allowed on the sidewalk, I know because I got a $168 ticket or doing so. I thought the cop was full of shit but looked it up and there it was.
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    My ebike sometimes feels like it’s shorting out

    Yea, does sound like an intermittent short, power down the bike, disconnect he battery and using a meter gently move the wires around. For what it's worth blown mosfets can be replaced and they are cheap on ebay, you will need basic soldering skills and equipment.
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    Troubleshooting hub motor

    Yea, riding the bike, (to me) is fun, driving my car is not, (except when it's raining!). You also see a lot more, about a month ago I spotted a huge 70" TV box in the trash, behind it was a 60" TV, no cracked screen or anything so I went home and got my hand dolly and brought it home. A $25...
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    Troubleshooting hub motor

    Most of the time I use it for quick errands like coffee or eggs, I only live about 3 miles from the most distant store and here in FL it's flat as a pancake, even a 250W Bafang does just fine. I do, at times, think about upping power, I know a Bafang can take more than 250W, (in short blasts and...
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    Troubleshooting hub motor

    Update.........SUCCESS!!!!!! installed replacement Mosfet from Ebay, (5 for $5.50) and she fired right up!. Now as we know these 250-350 watt controllers are dirt cheap but for someone sporting a 1000W model they can be sporting 12 Mosfet's and are not that cheap. Now to assemble everything and...
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    Troubleshooting hub motor

    With a gear hub if it's spinning forward, (while not under power), it freewheels on the planetary gear set. I might try it out just for shits and giggles though.
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    Troubleshooting hub motor

    I don't know if that would work with a geared motor or not, luckily, it seems to be a controller issue. With the way it's stuffed into a clamshell plastic housing behind the seat airflow is all but impossible so I'm surprised it lasted 5 years. The bike saves me considerable $$ in gas and wear...
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    Troubleshooting hub motor

    Your correct, I looked at some from the computer PS's I had lying around, those were around 500 volt 8 amp range but the one from the controller came back as 70 volt 75 amp. They are only $1.50/ea at Mouser, probably better quality than what it was originally built with, I might just change out...
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    Troubleshooting hub motor

    Well, finally got around to some serious testing today, one of the Mosfet's has failed, by using this vid from Grin as a guide,https://www.youtube.com/watch?v=lTssCn5YyTw one of the three phases has shorted directly to V+. Although these type of 350 watt controllers are cheap I've decided to try...
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    Troubleshooting hub motor

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    Troubleshooting hub motor

    Yea, I'm off tomorrow so I plan on taking the controller off the bike and testing the mosfet's and checking out the caps as well. It's integrated into a plastic housing where the rack meets the frame, hopefully it's that and not the motor, it did a bit of shuddering for a few seconds before it...
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    Troubleshooting hub motor

    Hello all, my setup is a Bafang 250 watt rear hub with no hall sensors, bike just quit, battery is fine, battery connections are fine, brake cutoff's are fine, wiring looks OK. So I'm left with controller/hub, is it possible to test the 3 hub phase winding's with a multimeter or must I get the...
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    Controller issue?

    Yea, it's cutting out at 36V so something inside the controller has changed value, I might try installing new caps one I dig it out of the bike, at least I can document the connections to further aid in buying a replacement. Doesn't help when some items are labeled "door unlocking function" LOL!.
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    Controller issue?

    Hi, thanks for the response, the speed remains the same, this problem just started about 2 months ago, it's the factory controller/display/battery that came with the bike. Seems Sun, (who sold the bike) just used Bafang as an OEM supplier, I only found replacements at one place and they will not...
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    Controller issue?

    Hello everyone, I have a Sun Electrolite Ebike with a 250W Bafang motor/controller, 36V 10AH battery. My problem is the system, (controller/LED power indicator) seems to misread the battery state incorrectly, after fully charged ( to 42.5V) the LED display is at the 1st blinking red position...
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