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  1. S

    GNG450w48v on a Specialized 2000 Rockhopper A1 FSR

    Hello everyone, Here is my first build, with a GNG 450w 48v MidDrive motor on a Specialized 2000 Rockhopper A1 FSR. I thought that this Frame geometry would be great for the GnG Mid Drive kit. Some mods were done to the Bike in order for a better performance.
  2. S

    Intermittent Power in a GNG 450W Mid-Drive, why?

    Hello there, I have installed a GNG 450w Mid-Drive Brusheless kit, and made a 48v battery from 4 12v UPS batteries. The problem is when i conect the battery, and accelarate, the engine runs...and stops...and runs...and stops...in a intermittent way. The first time i run it didn't happen. By...
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