
9
HUB INSTALLATION
MOUNTING (Optionally Available) HUB
EXTENSIONS
Each GSI wheel comes with a 70mm
pitch circle diameter. The Pitch Circle
Diameter (PCD) is the diameter of the
circle which passes through the center of
all the wheel rim holes. Any hub that is a
70mm PCD will attach to the GSI.
Always use the non threaded side of the
hub to introduce it to the threaded side of
the back of the wheel body. If a hub with
threads needs to be attached you must
use “captive” screws.
NEVER SCREW FROM A THREADED
ITEM TO ANOTHER THREADED ITEM
USING REGULAR SCREWS. DAMAGE
TO THE THREADS WILL OCCUR!
WARNING! Do not use screws that are
4mm longer than the lip of the hub. For
example GSI hubs have a 8mm lip, the
body of the GSI wheel is 4mm thick. So
the screw is a combined 12mm long
screw. Any longer and you risk screwing
into the PCB board of the wheel and
destroying it. THIS IS NOT COVERED
UNDER WARRANTY!
.