V1.0
RUNGU Electric Juggernaut LE User Manual
Copyright 2018 Standard Bearer Machines, LLC
38
Getting the Stated Range Out of Your System
Rungu estimates a maximum range at 30 watt hours per mile for an electric system. This is in the BEST
CASE SCENARIO in the real world, with little to no pedaling. When giving our range estimates, Standard
Bearer Machines references a 170lb rider, totally flat ground, smooth surface, no wind and cruising in
the most efficient range of the system at around 15 miles per hour. The Electric Juggernaut LE uses a
4000w system with 15.5 ah battery; this calculates to 38.3 miles maximum range (74v x 15.5 ah = 1,147.
1,147 watt hours divided by 30 watt hours/mile = 38.3 miles range).
Standard Bearer Machines expects a 15 mile range for your Electric Juggernaut LE. Our range estimates
are conservative although we have frequently beat these range estimations in our testing.
If you are not getting the range, there are many factors at play. If you are a heavier rider, it will
adversely affect your range. If you do a lot of starting/stopping on your ride, your range numbers will
plummet since accelerating takes the most juice out of the battery. If you are riding on hills, through
sand and snow or rough terrain, you will decrease your range number as the system will draw much
more current under these circumstances. To test your maximum range at top speed, see if you can plan
out a flat (or mostly flat) route, fully charge you battery, and set your bike computer to 50 amps to
determine how far you can go! Riding with maximum amps on your power system will decrease range
since the motors will always want to use that available extra power!
