8. Adjusting the bike to the rider
With adjustable
conventional stems
, the
height of the front stem area is modified by a
mechanism located on the bottom side.
Release the bolt of the locking mechanism
located on the bottom side of the stem until
the ratchet mechanism comes loose. Do not
unscrew it all the way, otherwise the whole
assembly will fall apart.
8.. Stems for threadless systems,
the so-called Aheadset* system
(*Aheadset is a registered trade mark of
the DiaCompe company which invented the
threadless fork tube system).
On bikes with an Aheadset system, the stem
also serves to adjust the initial headset bear-
ing pressure. If you change the position of
the stem, you have to readjust the bearings
(see chapter 12.
“The Headset”
). The vertical
setting range is determined by the intermedi-
ate rings, also referred to as spacers. In the
case of flip-flop stem models, it is also possi-
ble to mount the stem the other way round to
achieve a different handlebar height.
Release the bolt at the top of the fork tube
which serves to adjust the initial bearing pres-
sure and remove the Ahead cap.
Adjust the stem, which can now be moved,
according to your needs. Gently tighten the
bolt of the locking mechanism again, until it
engages. Then tighten the bolt.
Do not exceed the maximum torque of
10 Nm.
Please note: Changing the position
of the stem alters the position of the
handlebars as well as of the brake and
gear levers. Correct them, if necessary, as
described in chapter 8.
“Adjusting the bike
to the rider“
.
