V2.2
2022 RUNGU Dualie Rugged/XR series
Copyright 2021 Standard Bearer Machines, LLC
104
Motor and System Performance
Problem: The Dualie feels sluggish in difficult environments
Hills, snow, and soft sand will slow down the DUALIE and cause you to use more power and pedaling.
This is normal. If you feel like you have experienced better power in the past check the following items
Solution:
1.
Change to a lower gear.
2.
Check the power level setting and make sure is at its highest setting.
3.
If you’re in soft sand or snow, LOWER the tire pressure
to 5 PSI or lower if you notice that the
rear wheel is spinning more than pushing.
4.
Check that the Battery voltage is greater than 52V. IF the battery is discharged, you’ll have less
performance than when its charged.
Problem: The display shows
“
Error 21
–
Speed Sensor not functioning
”
, but Dualie continues to work.
The speed sensor has become unattached from the motor controller, the detector magnet has fallen off
or the sensor has fallen out of alignment with the magnet. This can happen after changing a rear tire or
performing other service on the rear wheel.
Solution:
1.
Check that the speed sensor is in place and connected.
2.
Refer to the section “
” to realign the
magnet. If following these
instructions fails to correct the problem,
3.
Contact Rungu Support to investigate other measures.
Problem: I am not getting the advertised range
Range depends on many factors
–
surface, tire pressure, power level, load, wind, incline, etc. Like a car,
accelerating hard or spending more time in soft sand (you can do that with Rungu) will have a significant
impact on the battery range of your Rungu. If you feel you are within the parameters of the
performance specifications stated above, check the for the following problems.
Solution:
1.
Check the tire pressure. The stated range uses tires at their highest pressure on flat, dirt road.
2.
Check that you’re
riding at optimal power and gear settings. The range is calculated at low
speeds and usually in gears 5-7 riding at 7 or 10 mph.
3.
Check the battery voltages
–
The battery should be 58-59 V with a full charge and be fully
discharged at 42V. If your battery is not operating in this range, contact Rungu for detailed
trouble shooting.
4.
Check your brakes by spinning each wheel and listening for the rotor contacting the brake pads.
If there is rubbing, align the brake calipers to eliminate the rubbing.
5.
Contact Rungu Support if you have other questions.
