Optima Lynx User Manual

34
Hubs
There is play inthe
hub when you push
sideways on the rim.
The hub may need tightening or readjustment. Adjusting hubs requires special
tools and can best be done by a qualied mechanic.
The hub does'nt roll
well and or feels
sandy
If you have recently overhauled the hub you may have over tightened the bear-
ing cups. If not then you hub has probabl;y become contaminated with grit and
grind and will need to be dissasembled, cleaned and re-greased.
After a rear hub over-
haul the derailleur
wont shift right.
if bearings were replaced, the hubs balance may be slightly off. See the section
dreaillleur and greas on how to adjust the rear derailleur.
The bike wont roll
properly (or if a trike,
it pulls to one side)
Your brakes may be dragging and incorrectly set up. Please refer to your brak-
ing equipmnt manual.
The front chainwheel
seems to bend while
p[edaling causing it
to scrape against the
derailleur.
Check that the cranks are properly secured to the bottom bracket, and that all
chainrings are securely fastened to the cranks. If this doesnt help, have your
bottom bracket checked by a mechanic.
If you still encounter the problem, it may be that you are exerting too much
force on the fedaps: youll need to shift to an easier gear and pedal faster - if
you dont you will damage boith your bike and your knees.
There is creaking
sound when you pedal
listen carefully to see whether the sound is coming from your cranks or ped-
als. Check that your chainwheels are securely fastened to the frame. Check
that the cranks are tightened properly to the bottom bracket, and that the
bottom bracket is securely tightened in the frame. If the problem persisits,
try removing the cranks (special tool rquired) and greasing the bottom
bracket stubs.
You removed and
replaced the chinrings,
and now you can
barely shift gears
You may have installed the chainrings the wrong way round. Check to
ensure thatthe shifting ramps and such are on the inside of the cranks. If this
si not the cause, readjust your front derailleur.
You bent the chainring
in a crash
If the bend is severe, replace the chainring. If not too severe, get an adjust-
able spanner and close the jaws on the bent section of the chainring and bend
it true. If it brakes, that meant you needed to replace it anyway.
You broke a tooth off
the chainring.
Its always best to replace the cahinring, but as a remporary x le down and
smoothen the remaining stub, and the chainring will function as usual.
35
Braking
One brake pad drags
agains the rim
If you have V-brakes, you will need to adjust the spring tension by tightening
or loosening the spring adjustment bolts at the base of the brakes.
If your bike has Magura Rim Brakes, check whether the pads retract fully
into the slave cylinders. If they do not, remove the brake pads and clean out
the slave blocks and brake blocks with a toothbrush.\If the problem persisits
please take your bike to a qualied mechanic.
If your bike has Disks brakes, you may need to adjust the balance of the disk
using special disk brake spacers between the brake caliper and frame.
The brakes bind
on the rim or dont
return snappily after
braking.
If you have cable brakes, remove the inner cables from the beake housings
and check for dirt and kinks. If the cabe is kinked, you will need to replace it
with a special tandem cable (standard cables are too short). If the cables are
undamaged, replace them with a thin coat of lubricant.
If you have hydraulic brakes, check the hydraulic lines for dents and pinch-
ing. We stongly advise having a qualied mechanic carry out any work on
hydraulic braking systems.
The brakes work
poorly and feel
squishy, you need to
pull the levers all the
way to the handlebars
for them to work.
Check your pads and rim or disk for oil buildup. If you nd any oil on the
disk, thouroughly clean the disk rotor. Then remove and replace the brake
pads with new ones, being sure to dispose of the contaminated pads as these
are dangerous. If there is no oil, you may have air in your system. Please take
your bicycle to a sufciently qualied bicycle mechanic to bleed your brakes.
Inspect rim brake pads for wear and cosistency: old rubber can and will
degrade, reducing the rubber's ability to sloy you down.
The brake gets jerky
or grabs at one point
on the wheel
Check the rim or disk for wear and trueness, or localised contamination.
Buckles in rims and diskscan cause braking irregularities. Replace, clean or
straighten the part as nececary.
The brakes are too
tight, You cant get
them close enough to
put enough leverage
on them.
If you have cable brakes, check to see whether the adjustment barrel is fully
screwed into the brake lever. If it is, thenv you may need to loosen the brake
cable at the brakes.
If you have self adjusting disk brakes, remove the wheel and use the yellow
disk brake spacer from Magura. If you dont have one, carefullt insert a at
head screwdriver between the pads and twist it to force them apart.
You hear a concern-
ing metalic scraping
sound when braking:
braking performance
may have dropped.
Your pads, Rim or Disk, are most likley severely work and the braking
surface is making contact with the metal casing of the brake pad. Stop using
the brake in question untill you can replace the pad.
I know what im
doing, yet I cant
properly bleed
the brakes on my
rider!
Please contact Optima or your dealer for the special Rider bleeding kit.

Optima Lynx Specifications

General

Brand	Optima
Model	Lynx
Category	Exercise Bike
Language	English