How The Components Work - BERG CYCLES SPORTCROSS Serie Manual Del Usuario

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HOW THE COMPONENTS WORK

The quick release wheel system, was invented in the 1930s to allow quick and easy removal of the wheel
without the need for tools, this has become standard equipment on most bikes for recreation, sports
and competition. Although it seems only a wide screw with a lever at one end and a nut at the other,
the system uses quick release cam action to hold the bicycle wheel in place. Because of its adjustable
nature, it is essential to understand how it works and how to use it appropriately.
The full force of the cam action is necessary to hold the wheel safely.
Hold the nut with one hand and rotate the lever as a wing nut with another until is as tight as possible,
this will not tighten the wheel securely into the slots.
1. ADJUSTING THE QUICK RELEASE MECHANISM
The hub of the wheel is attached in place by force of the cam quick-release mechanism that pushes it
against a slot and pulls the tension adjusting nut through the bolt, against the other slot. The level of
strength is controlled by the fixing nut tension adjustment. By turning the tension adjustment nut in
the a clockwise direction, while keeping the cam lever to turn, increases the clamping force; rotate an-
ticlockwise while keeping the cam lever to turn, the strength of fixation decreases. Less than half turn
of the back tension adjustment nut can make the difference between the strength for an insecure and
secure attachment.
Being the manufacturer or distributor to install the quick release system on the axis of the hub, you
should never remove it unless the hub needs to be arranged. If the hub requires assistance, consult a
specialist.
2. FRONT WHEEL SECONDARY RESTRAINING DEVICES
Many bicycles have front forks which use a secondary retention device of the wheel, so that the wheel
does not leave the quick release mechanism if not properly tightened. Secondary restraints do not re-
place proper adjustment of the quick release lever.
These devices are divided into two basic categories:
a) The type of dock that is an accessory the manufacturer incorporates in the hub of the front wheel or
fork.
b) The integral type that is moulded cast or machined on the external sides of the fork tips. Ask your
dealer who will explain what specific type of secondary retention your bike has.
Remove or disable the secondary retention device is extremely dangerous and can cause serious injury
or death. It may also invalidate the warranty.
3. REMOVE OR INSTALL WHEELS WITH QUICK-RELEASE MECHANISM
a) Remove the front wheel with quick-release mechanism
(1) Open the brake shoes.
(2) Turn the quick release wheel lever from a locked or CLOSED position to the OPEN position.
(3) If the fork has a secondary retention device, skip to Step 5.
(4) If the fork has a secondary retention device of the plug type, unplug it and go to step 5. If the fork
has an integral secondary retention device, loosen the tension enough to remove the wheel, and then
go to step 5.
(5) Lift the front wheel a few inches of the soil, and take a small hit at the top of the wheel with the palm,
to release the wheel from the fork.
b) How to install a front wheel with quick-release mechanism
(1) Rotate the quick release lever so that it distances from the wheel, forming a curve. This position is
OPEN.
(2) With the steering fork facing forward, insert the wheel between the legs of the fork, so that the axle
seats firmly at the top of the slots that are at the ends of the legs - the tips of the fork. The quick release
lever should be on the left side of the bike. If your bike has a secondary restraint system, activate it.
(3) Holding the quick opening lever in the OPEN position with your right hand, adjust the tension with the
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