1.) Since this was just a feasibility study for the
power-crazed lads at Hi-Power Cycles, it started
with a basic, lower-end fat bike, then laced up
4000-watt hub motors front and rear to make a
crazy-fast 2WD sand thrower and snow blower.
2.) The bike uses a single battery pack, but runs
separate controllers (and throttles; normal twist
for the rear and thumb on the left side for the
front) for each motor.
3.) Since the bike has a single-speed on the
rear hub, HPC chose to install a Schlumpf
Innovations two-speed crankset. The silver button at the bottom bracket end of the crankarm
shifts the unit internally. Shifting doubles the
standard ratio! This bike has a top speed of over
40 mph, and the SI crank allows you to pedal at
4.) The powerful HPC-spec Crystalyte requires
serious torque arms to keep the power harnessed to the fork.