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    Bafang conversion with Nexus 8 speed internal hub

    I did 42 miles today, 36 straight though, then another 6 miles after a charge. Terrain was fairly flat, I tried to maintain 19 mph, using mostly assist 2. My charger puts a full 20A into the pack. I'm putting in the full 15,000mAh in 50 minutes.
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    Bafang conversion with Nexus 8 speed internal hub

    Upgraded my charger, I can now charge at over 19 amps, where my old charger maxed out at 3. Charger was around $60, and 24V power supply was around $60. My low voltage monitors also arrived today I've been climbing some super steep hills lately to the point the front wheel was barely...
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    Bafang conversion with Nexus 8 speed internal hub

    Internal hub has been working great, only issue I've had was the cable getting pinched between the motor and frame, causing it to shift slowly. I've given a dozen or so test rides with avid riders, they've been cranking on it under full motor power and all is well so far. I had waited a few...
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    Bafang conversion with Nexus 8 speed internal hub

    I did have one issue already with the internal hub. When I installed the motor, I left a little gap between the motor housing and the frame to allow the shift cable to be routed using the brazed on mounts. Turns out this was a bad idea, the motor eventually closed the gap which pinched my...
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    Bafang conversion with Nexus 8 speed internal hub

    Seller name was BTN (Let's back to nature) on Aliexpress. When you pay Aliexpress, they put the money in an escrow account, and the seller only gets paid when you give the OK, you get a few days to try the product out. I chatted with the seller (Amis) and he said he had the items in hand ready...
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    Bafang conversion with Nexus 8 speed internal hub

    The cells are rated 20C/30C, so that would be 100A continuous rating (150A for 20 seconds), the motor should be drawing only 20A. Not too worried about the batteries, they don't even get slightly warm even long runs at full throttle. I haven't measured the peak current draw, but I assume...
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    Bafang conversion with Nexus 8 speed internal hub

    My build page is here with more info, I'll post a quick cut paste summary below. The conversion process took 4 hours, and the cost of conversion was about $600. Internal hub has held up to about 10 test rides from friends, and a weekend of use with my kid on the handle bars...
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    Programming the Bafang Middrive BBS01+BBS02

    For those looking for the correct programming cable, this might work. Looks like it is the Bafang 9 pin connector (male and female), you would have to trace out the pins on the 5 pin connector back to this 9 pin, seems like it should work though...
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