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    90V 300a 50ah+ Battery - "Where Can I Purchase a New Battery in the US?"

    Hello folks, I currently have a 84v 70ah 200a battery in a stainless steel case. My QS 273 draws so many amps at half empty it will trip the BMS protection at full throttle and leave me stranded. When I bought the battery I had the crappy Sabvaton controller that was limited to 72v 220a, it...
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    8k Watt 84 Volt Moto/eBike $4000

    This is a high end component ebike/moto build. Located in San Diego (local sale only sorry no shipping) Less than 200 miles, NEVER BEEN OFFROAD Cabmotorworks sells this same configuration for $10k starting. Fastest Electric Bike - The Cab Recon by Cab Motorworks This is a Surron killer! 84...
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    Another QS273 Build - "Ducati badging" for fun

    Hello fellow ebike builders! I waited until I ironed all of the kinks out on this build before posting. Originally started with the Sabvoton controller that comes with the rear hub kit, that died after like 50 miles, had to push the bike home.... Sourced a Nucular 24f controller from a member...
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    "Does anyone have experience in basically upgrading from a Sabvaton controller to Nucular to power a QS 273 motor setup?"

    Hello, I have an ebike that was built with a sabvaton controller which failed after 60 miles. I sourced a Nucular 24f controller from this site and installed it but I have been unable to get it configured properly. I was able to get the auto setup to find the motor, correct the angles, but had...
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