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30
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Velotechnik
Gear system
With the gear system you can adjust the peda-
ling frequency, i.e. means the number of revolu-
tions of the crank per minute, to the terrain
and the desired speed.
Your pedaling frequency should stay between
80-100 revolutions per minute and not fall be-
low 60 while going uphill. If necessary consult
your local dealer and have him retrofit the ge-
ar range to your style of riding.
Your Street Machine GT comes standard with
a 27-gear derailleur gear or with a 14-speed
internal hub gear system.The following section
refers to the derailleur gear system only.
Please refer to the manual of the gear manu-
facturer.
You operate the gear changer with the bar
end shifters on the handlebars.
The right lever for the rear derailleur has an
index derailleur system that positions the
chain always on the chosen sprocket, so that
you don't have to "search" for the gears.
It is not possible to index the left lever so that
you have to adjust the front derailleur while
shifting by slightly moving the shifter to stop
the front derailleur from dragging against the
chain while pedaling.
Riding a recumbent requires foresighted gear
shifting. Before stopping you should timely
change in a low gear to make it easy to start
off again, without having to pedal heavily and
struggling with your balance.
You may only change the gears while you keep
pedaling, smoothly and without applying great
force, all the time that the chain is moving bet-
ween the sprockets. Due to the long cables
that expand under pressure and the housing
that compresses under pressure it may be hel-
pful for changing gears quickly to turn the bar
end shifter a little bit farther than necessary to
select a gear and turn it back to the indexed
position once the chain has properly shifted
("overshift").
When the chain length has been propperly ad-
justed you can choose every combination of
front chain rings and rear sprockets to shift
gears. However, it is useful to ride the lowest
gears with the smallest chain ring (the biggest
rear sprocket), the middle gears with the
middle chain ring and the highest (fastest) ge-
ars with the biggest chain ring.
The setup of the chain rings and sprocket le-
ads to an overlap of some gears.This means
that different combinations of chain rings and
sprockets can result in the same gear. It would
be possible to arrange a gear system so that
double gears do not occur but this requires a
lot of concentration when you shift gears whi-
le riding, since you will always have to change
the rear sprockets as well as the front chain
rings. If you would like to change the setup of
your gears please consult your local dealer.
Gear system
Danger! Do practice shifting gears on a
traffic-free street. In the course of this make
yourself familiar with the functioning of the
bar end shifters. Doing this in traffic could
distract your attention from possible dan-
gers.