3.
FORKS
The new Cannondale Jekyll frame is compatible with all in-headtube type
HeadShok forks (such as the Fatty, Fatty Ultra, and Super Fatty) and the
single sided Lefty fork. Using any fork other than those listed here could
lead to frame or fork failure, and will void your warranty.
WARNING: Jekyll frames were not designed to use forks other than those
manufactured, tested, and approved by Cannondale. If you do so you may
break, damage, or shorten the life of the Cannondale frame, with result-
ing risk of injury or death to the rider. If you do so you will also void your
Cannondale frame’s warranty.
HEADSET
The Jekyll’s head tube is designed to accept HeadShok forks and Head-
Shok headset cups only.
FRONT DERAILLEUR
All Jekylls require a standard “bottom-pull” type front derailleur with a
31.8mm clamp diameter. Because the front derailleur mounts to the rear
swingarm, and has a limited range of vertical adjustment, some derailleur
designs (such as Shimano “Top Swing” derailleurs) are not compatible.
CRANKSET / BOTTOM BRACKET
Like all Cannondales, the Jekyll bottom bracket shell is 68mm wide and
has English threads. Proper bottom bracket spindle length depends on
the crankset being used. Use whatever length spindle is recommended
by the crank manufacturer, providing the proper clearance between the
crankarms and the frame is maintained.
CAUTION: DO NOT MACHINE (OR “FACE”) EITHER THE HEADTUBE
OR THE BOTTOM BRACKET SHELL. THESE SURFACES ARE ACCU-
RATELY FACED AT THE FACTORY SO THIS TRADITIONAL FRAME
PREPARATION STEP IS NOT NECESSARY, AND COULD DAMAGE
THE FRAME.
