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John Powell, who owns JP Aerospace, came to us with a mission. The mission was to convert his fat tire bike to a mountain climbing machine that he could use to retrieve items returning from his space program. These items sometimes end up in remote locations. Please see his site to appreciate what he is doing: http://www.jpaerospace.com/index.html
Mission Accomplished! This was done with the best of the best high-end 48V geared hub motor, which now provides over 1300 watts of peak power.