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Adjust the front boom so that the bottom
bracket axle is horizontal when you look at it
from the front. For that purpose look beyond
the bottom bracket shell at the rear wheel ax-
le and align the front boom parallel to it.Align
your eyes with the bottom bracket axle and
not the front changer tube above.Then sit on
your bicycle and check the position. (Hint:
When you have the impression that the bot-
tom bracket is turned alternately to the left
and then to the right when cycling you will ha-
ve found the correct middle position).
Tighten the screw with a torque wrench (tigh-
tening torque 14-16 Nm). On your first ride
check whether there is sufficient clamping.
In order to move the bottom bracket tube
your specialist dealer has to adjust the chain
length. By default the Street Machine GT co-
mes with a very long chain so that the adjust-
ment range of the bicycle can be fully used wi-
thout the need to lengthen the chain.
After the first adjustment of the leg length that
you have done together with your specialist
dealer while handing over the bicycle, the
chain has to be shortened so that the arm of
the derailleur is not fully turned forward while
shifting on the big chain ring in front and the
big sprocket behind.The derailleur must still
be able to compensate a length change of the
chain of at least 4 cm. In order to choose the
right chain length, please consult the manual of
the derailleur manufacturer.
Adjusting your new bike
9
HP
Velotechnik
Danger!If the screw is tightened too much
or bent, the screw can break! If the clamping
is insufficient the front boom can turn du-
ring a ride which may cause your feet to slip
from the pedals and lead to a dangerous fall.
Danger! After the chain has been shorte-
ned it has to be closed with a special closing
link or a chain riveting tool that expands the
rivet while riveting (i.e. R
OHLOFF- Revolver).
A poorly joined chain may break and thus
lead to a fall. Have adjustments of the chain
length or the changing of the chain be done
by your bicycle mechanic.
Caution! Take care that the chain tubes ha-
ve at least a clearance of 5 cm (2") to the
rear derailleur and the front changer even
under maximum tension of the chain and
that the tubes stay tight in their fastenings.
Shorten the tubes if necessary. If the end of
the chain tube gets into the rotating drive
train it could be locked-up and destroyed.
The end of the rear chain tube has to be
tightly secured with a cable tie behind the
retention spring.
Check that there is at least a 5 cm (2") clearance between the
end of the chain tube and other parts of the drive train.