V2.2
2022 RUNGU Dualie Rugged/XR series
Copyright 2021 Standard Bearer Machines, LLC
105
Mechanical
Problem: I hear
a clicking noise when I’m pedaling
in every gear; gear changes take long or are difficult
The rear derailleur may be out of adjustment, misaligned or bent, the chain may be worn out, or the
cassette may be damaged from a high-power gear change.
Solution:
1.
Check the cassette. Use a stand or tethering to raise the rear wheel and while operating the
pedals with your hands (or by motor). Rotate the rear wheel and look at the cassette
(cogs/gears on rear wheel) and observe if any
are bent or “wavy”, if so order
a new cassette to
replace the damaged one. Adjust derailleur alignment (next step) when you complete the
replacement. If the cassette is not bent or damaged,
2.
Adjust derailleur alignment. Use a stand or tethering to raise the rear wheel and while
operating the pedals with your hands, use the shifter barrel adjustment to re-align your
derailleur.
Note: If you have a high-bandwidth Internet connection, please
how to do a derailleur adjustment.
If this fails to eliminate the clicking noise,
3.
Check that the derailleur, derailleur hanger, or frame isn’t bent or broken. Replace components
as necessary. If the derailleur, hanger and frame are intact,
4.
Replace the chain.
5.
Contact Rungu Support if you have other questions.
Problem: I hear a loud
click noise coming when I’m pedaling in
a high gear
The cassette cog is worn out; replace cassette. Refer to
the “
Understanding and changing the Power
” section above on how to avoid
this problem after replacing the cassette.
Problem: I hear a rubbing or squealing noise from one, or both, of the front wheels when riding.
The rubbing noise may occur from the brake rotor rubbing against a rotor or the tire rubbing against the
inside of the fork. A squealing noise indicates the brake pad is rubbing against the brake rotor.
Solution:
1.
Check the wheel position in the fork. Loosen the quick release and on level ground apply
pressure on the fork to make sure the wheel hub is engaged correctly in the dropouts. Retighten
the quick release. If you notice that the tire is rubbing after the correction, take the wheel to be
“trued” by bicycle technician. If the brake rotor continues to rub against the brake pad,
2.
Re-align the brake caliper. Follow component directions on how to realign your brake caliper or
have realignment performed by a qualified technician. If you cannot realign your brake caliper
to eliminate the rotor rubbing against the brake pad,
3.
The rotor is warped; replace it or have it replaced.
4.
Contact Rungu Support if you have other questions.
