V2.0
RUNGU Electric Juggernaut Owner Manual
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2019 model year
Copyright 2019 Standard Bearer Machines, LLC
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Riding Electric Juggernaut
Riding Electric Juggernaut, the first time
Be prepared for a learning curve riding Rungu the first time. Electric Juggernaut rides differently than
bicycles and e-bikes and requires five to thirty minutes of riding before feeling comfortable. The
additional front wheel adds more inertia to turning; riding Electric Juggernaut feels more like riding a
motorcycle than riding a bicycle. We recommend starting on pavement in an area with no other
vehicular traffic and using power level 1 only to get used to turning and changing gears.
RUNGU Electric Juggernaut MDV Learning to ride
Using Gear Shifters
Electric Juggernaut has trigger-style gear shifters common to mountain bicycles; when used, they
optimize your Electric Juggernaut riding experience and apply the appropriate power to the appropriate
terrain. The shifters let you change the gear ratio between the motor and the rear wheel to best
leverage the power coming from the motor regardless the power level. Like the transmission in a car,
being in the wrong gear can cause the car to stall or use excessive energy to maintain speed. The same
holds true with Electric Juggernaut.
Electric Juggernaut has 10 gears
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first gear has the largest sprocket on the rear wheel; tenth uses the
smallest. First gear has the lowest gear ratio between the motor and the rear wheel. This gear is used
for hill climbing or crossing the most difficult soft terrain. Tenth gear has the highest gear ratio,
therefore it’s used for cruising on flat roads to achieve the highest speed.
You use your right thumb and index finger to shift gears. Each press of the thumb or pull of the index
finger against the shifter indexes the gear. Pressing the shifter with the thumb changes decreases the
gear by one starting at tenth gear. Pulling the shifter increases the gear by one starting with first gear.
You can shift gears while pedaling. The shifter controls the rear derailleur, which moves the chain from
one gear to the next. The derailleur can move the chain only while the chain is moving. The Mid-Drive
motor moves the chain when you throttle or pedal, but Electric Juggernaut also uses an electronic clutch
(gearsensor.com) to shut off the motor during each gear change, so you have to pedal in order to
complete the gear change. The electronic clutch activation minimizes the force on the chain and
sprockets during gear changes to avoid damage to the chain or cassette. It does not prevent
overloading conditions if changing gears under heavy load (power level 4 and 5), so avoid changing gears
when experiencing heavy load going up hills or deep snow. Read the section below for more
information.
Note: Electric Juggernaut Warranty does not cover damaged/worn cassettes and broken chains.
