I built a fat bike for this purpose. I started with a titanium frame and built up from there. I has a BBSHD drive with 11 speed 11X46 tooth gearing. The battery system consists of four batteries totalling 2,540 watt hours @ 52 volts. I run the batteries in parallel and charge them with a 15 amp charger. My charge rate is about 1 mile per minute (800 watts output). I do have a QuietKat trailer that can haul 100LB. My range is anywhere from 60 miles in deep snow to 275 miles at a leisurely pace. I plan on doing the Great Divide Mountain Bike Route with this bike.
