5Remove your 4X4’s teering
servo and install it
in the LCG chassis.
6Remove the stock 4X4 servo horn
and replace it with
the conversion kit
part. Install the
LCG servo horn so
it points up, rather
than to the right
as in the 4X4. Power up your radio gear and make certain the horn
points straight up with the steering wheel at neutral..
Install the servo horn so it points straight up. Not that the
linkage ball has a “tall” side, but install the linkage with
the ball facing up, as shown.
7Install the LCG steering linkage onto the servo horn. ;e “dogleg” end attaches to the horn
8Remove the steering bellcranks. First,
take out the screws
that secure the ‘cranks.
Next, slide them o; the
TIP Don’t be surprised if the lower bellcrank bearings pop out and
stay on the posts. ;is is normal. To remove
the bearings, use a pair of pliers as an anvil
and tap the posts through the bearings using
a screwdriver handle. Close the pliers just
enough to prevent the bearing from passing through while allowing the post to slip
Why does lowering a vehicle’s center
of gravity improve handling? If we
exaggerate our examples of low CG
and high CG to absurdity, it’s easy to
visualize how lower is better—consider
a racing kart versus a “racing” barstool.
Obviously, the kart is going to get around
the track with a lot more speed (the
barstool, however, will get around the
track with a lot more laughs).
If you want to get all science-y about
it, the height of a car’s center of gravity
can be thought of as a lever that pushes
the car to the outside of the turn. ;e
higher the CG, the longer the lever.
As you push against the lever, weight
transfers from the inside tires to the
outside tires. Push hard enough, and
the inside tires will become completely
unweighted, leaving the ground entirely.
It’s pretty easy to imagine this happening
to Barry Stoole as he rolls his barstool
over in turn one.
Now, let’s consider Karl Kart, who has
a CG located at about the height of his
spleen. If you shove Karl at his CG, you
might be able to slide him sideways, but
it’s highly unlikely that you’ll tip him over.
Here’s a more scientific look at CG
height in action with exaggerated motor
and battery positions. Imagine both cars
taking the same corner at the same
speed. ;e car on the right has a lower
CG and transfers weight across its tires
more evenly while cornering. ;is allows
it to have more traction and maintain
more speed through the turn. ;e car on
the right has a higher CG and transfers
more weight to the outside tires, reducing
traction. It can’t hold the speed of its low-CG counterpart without losing traction,
or if the CG is really high, flipping right o;
If he can hang on tight enough to not fly o ;, Mr.
Stoole’s motorized bar stool will likely tip over the
first time he turns the front wheels.
Mr. Kart, on the other hand, isn’t going anywhere. ;e low CG of the
chassis and driving position will keep all four tires planted firmly on the
¡ Reduced chassis roll
¡ More even weight distribution
¡ Increases chassis roll
¡ Outside tires wear more heavily