Last
time, we talked about axles and hubs and how making changes to these parts can
make a big difference on how your kart handles.
This will allow you to optimize your kart for track conditions and
improve your race times.
The
changes to the axles and hubs that we described before assumed that there was
no change to the rear track width.
Widening the rear track can have a big effect on grip. It increases the
lever arm to the outside rear tire and also adds flex on the axle similar to
how changing the stiffness of the axle works.
Increasing the rear track width will increase the flex and should be
done on those days when it is hot and sticky and you have understeer.
Rear
torsion bars are the last of the items that can be used to make large changes
to the rear end of your kart. Most karts
have adjustable or removable rear torsion bars. They are used to add stiffness
to the rear frame so they should be added when the kart is loose and the track
is slippery.
After
that, the tuning parts have a smaller impact on the kart rear end, but they
still should not be disregarded. The rear seat struts and the seat are part of
the chassis system and add stiffness to the chassis. Seats tend to be expensive and difficult to
replace, so this is not the best place to look when tuning the kart chassis,
but if you have to replace your seat, realize you may need to start again through
the tuning process. The lower bumper bar
can also have some influence on your kart. Most racing rules do not permit
removing it, but adjustments may be possible there.
It
is a long list of items, and in the end, don't forget you can also consult your
chassis manufacturer as they can help you understand how to make the system
work together.
