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5.2 Stem assembly instructions
on carbon fork steerer
Always use an adequate expander for the fork and
make sure that is positioned so that it can support
the stem clamp force necessary to secure it to the
fork. Follow the following instructions:
1 • The expander must have a length enough to
completely cover the stem clamp area and to
exceed for at least 10mm the stem clamp height
(Fig. 5.2.1);
2 • To allow the headset adjustment, the gap
between the upper edge of the stem and the upper
edge of the fork steerer must not exceed the value
of 3mm (Fig. 5.2.1);
3 • It is allowed to use a 5 mm spacer above the
stem, in this case make sure that the expander
comply the point 1) (Fig. 5.2.2).
IMPORTANT
If the stem clamp closes on an area where the
expander is not present, it will tend to ovalize
and cut the carbon fork steerer, causing serious
accidents for the user.
In fact, the steerer could suddenly break under
stress! (Fig. 5.2.3)
IMPORTANT
Do not install the stem above the fork steerer!
(Fig. 5.2.4)
The incorrect position of the stem can damage
the carbon steerer and the stem structure up to
causing serious accidents for the user.
Fig. 5.2.3
Fig. 5.2.1
Fig. 5.2.4
Fig. 5.2.2
NO
NO
Max 10 mm
Max 3 mm
Max 3 mm
Max 10 mm
