Both the Super Fatty SL and Fatty SL use
compressed air for a spring, allowing infinite
adjustability of the preload by varying the air
pressure within the cartridge. Preload adjust-
ment on both models requires a precision sus-
pension air pump with gauge that is capable
of delivering at least 150 psi through a Schrad-
er valve. A check valve, quick-disconnect, or
valve extension may also be helpful in prevent-
ing air loss from the valve as the pump is
removed. The maximum preload pressure
for the air cartridge is 200 psi.
The following procedure is for initial
setup only. We encourage riders to
experiment with different preloads
to achieve their optimal setting.
1. Remove the front wheel. Thoroughly clean the area underneath
the fork crown, then remove the Schrader valve cap (See Fig. 3.)
2. Refer to Fig. 4 to
determine the recom-
mended air pressure
range based on the
rider’s weight. Using
your suspension pump,
add air to the fork accord-
ing to the chart. Note
that Cannondale recom-
mends running the Super
Fatty SL in the soft end
of the adjustment range
to allow more shock sag
for full suspension use.
3. Replace the valve cap and the front wheel. Remember to reattach
the front brake.
For a more customized setup, use the following the steps.
5.
Fig.3
▼
Schrader Valve
Fig.4
▼
AIR PRESSURE (psi)
RIDER’S WEIGHT (lbs.)
'99 SL-Fork Instructions 8/25/98 3:33 PM Page 5
