biknut
Well-Known Member
This is Bullwinkle, my new build. The donor bike for this project was a Bigniu BGX. It's one of the new generation high speed, low torque eBikes coming out in the last year or so. It wasn't too shabby in stock form, with a claimed 1500w motor, and 40 amp controller, which actually put out over 2000w. I probably could of lived with that but it had one major flaw. It's gear drive hub motor has too much noise coming from its metal gears.. Besides that, it's the best looking eBike I've owned. That makes it a prime candidate for upgrading. This is the most extensive build I've competed so far.
The first thing I did was rebuild the stock 48v battery, turning it into a 72v 20ah pack. I replaced the stock 40 amp controller with a Russian Thermo Nucular F24, adjustable up to 500 amps. I'm running 80 amp. The new motor is a no name ,but probably QS, direct drive 5000w hub motor. My goal was to keep the bike looking as stock, and turn it into a decent street bike capable of keeping up with traffic. I feel like I achieved my goal. Changing the settings is easy, but for now I'm running it at a modest 80 amp, 5000w good for about 50 mph.
The first thing I did was rebuild the stock 48v battery, turning it into a 72v 20ah pack. I replaced the stock 40 amp controller with a Russian Thermo Nucular F24, adjustable up to 500 amps. I'm running 80 amp. The new motor is a no name ,but probably QS, direct drive 5000w hub motor. My goal was to keep the bike looking as stock, and turn it into a decent street bike capable of keeping up with traffic. I feel like I achieved my goal. Changing the settings is easy, but for now I'm running it at a modest 80 amp, 5000w good for about 50 mph.