6.
NOTE: After making the geometry adjustment, you may want to change
the angle and/or position of your saddle to maintain optimal comfort and
your desired riding position.
CAUTION: IF YOU STEEPEN THE BIKE, MAKE SURE THAT THE FRONT
DERAILLEUR DOESN’T INTERFERE WITH THE CHAINRING TEETH.
SEE THE FOLLOWING PARAGRAPH ABOUT FRONT DERAILLEUR
ADJUSTMENT.
FRONT DERAILLEUR ADJUSTMENT—VERY IMPORTANT!
The Jekyll’s rear suspension design places the front derailleur on the rear
swingarm. This arrangement requires very precise adjustment of the front
derailleur. Additionally, the adjustability of the Jekyll’s geometry means
that the front derailleur adjustment must be checked whenever changing
the rear shock position. The front derailleur should be adjusted with the
shock positioned as far aft as possible. That is, the frame should be at it’s
steepest, tallest position before adjusting the front derailleur. See Fig. 1.
Once the rear shock is set to its most aft position, adjust the front
derailleur so that the derailleur cage is approximately 1mm above the
large chainring when there is no weight on the bike (see Fig. 2). The rear
end of the derailleur cage will rock up and away from the chainrings as
the suspension is compressed or as the geometry is changed to a slacker,
lower position.
The front derailleur can be adjusted to the 1mm clearance above the large
chainring at any point in the range of geometry adjustability. However, if
the geometry is then adjusted to a more steep, tall setup (with the shock
further aft in the mounting collar), the front derailleur will have to be
readjusted or it will catch on the chainring teeth.
CAUTION: IF THE JEKYLL’S REAR SHOCK IS MOVED TO A MORE
REARWARD POSITION IN THE FRAME’S PIVOTING COLLAR, THE
FRONT DERAILLEUR POSITION MUST BE CHECKED BEFORE RIDING.
IF THE FRONT DERAILLEUR CATCHES ON THE CHAINRING TEETH,
YOU COULD DAMAGE OR DESTROY YOUR FRONT DERAILLEUR. YOU
ALSO RISK A SERIOUS CRASH, WHICH COULD CAUSE INJURY OR
DEATH. IF YOU DO NOT UNDERSTAND THE ABOVE PROCEDURE FOR
ADJUSTING THE FRONT DERAILLEUR, PLEASE SEE YOUR
AUTHORIZED CANNONDALE RETAILER.
