Set caster /camber /toe .....LSR

[E.F.I]

Setting your Caster and Camber

Here is any easy guide to precisely setting up your LSR front end.
These instructions are for all LSR A-arms. Please note that some styles including Sport A-arms do not
have complete adjustability. However, all other information still applies. If you purchased extended AArms
you will be required to revalve or purchase new front shocks in order to achieve optimum
performance and pro-long A-Arm life. All LSR A-Arms are backed by a one-year limited warranty against
manufactures defects or defects in material only. We recommend that a professional ATV mechanic install
all aftermarket parts. Check the end of the instructions for notes on specific models. Please note, the bags
that you’re A-arms are shipped in will be marked with the side they are to replace.

Camber

Camber is the amount of degrees that the tire and wheel is tilted in or out at the top in relation to
the bottom of the tire. A tire that is tilted in at the top and out at the bottom is said to have negative camber.
The farther it angles out at the bottom the greater the amount of negative camber.
For positive camber, the top of the tire is farther out than the bottom. The reason for having
camber in your front end is as follows. An ATV’s suspension is forced over in a corner and the suspension
flexes. With everything in motion, all this force wants to flex the tire more upright, or reducing the amount
of negative camber.
A tires greatest traction is achieved when more of the tread is in contact with the ground. As the
bike enters a corner, the forces tend to bend everything over, adding positive camber. To make sure that the
tires greatest amount of tread is in full contact when it is most needed, we set up the front suspension with a
negative camber. How much negative camber you choose depends on the amount of suspension travel, and
some various other factors such as the terrain you plan to ride on.

Caster

Caster is the amount of angle that the spindle has in relation to the vertical centerline of the wheel.
If the upper ball joint is farther forward than the lower ball joint, it is said to have negative caster. If the
upper ball joint is farther to the back than the lower ball joint, it is said to have positive caster. The greater
the amount of positive caster, the more stable the ATV will be at speed. The less positive caster it has, the
easier it will steer and the quicker it will turn. As the spindle is laid back, the tire has to lay over more
when the front tires are turned. This adds stability. If there is not much angle, the wheel will turn more
easily, making it quicker and easier to turn.

Recommended Caster: Positive

Recommended Camber: Negative
Motocross: 5 - 7°
Motocross: 1 - 3°
Cross Country: 5 - 7°
Cross Country: 1 - 3°
Sand Duning: 3 - 5°
Sand Duning: 2 - 4°
Desert Racing: 6 - 8°
Desert Racing: 2 - 4°
Recreational: 5 - 7°
Recreational: 1 - 3°
TT Racing: 3 - 4°
TT Racing: 1°

Toe

The toe of an ATV measures the relation of the leading edge of the front tires to the back of the
tires. Toe-out refers to the fact that the front of the tires point out. Toe-in refers to the fact that the front of
the tires point in. We recommend you set your toe-in to ¼ of an inch.
How to Setup your Front End
Before you start this procedure, a few things need to be done first. Make sure your workspace
floor is completely level. You will need a straight edge and an angle finder (available at your local
hardware store). Do not attempt to set up your front end on a stand of any kind. Your quad must have the
tires on, and be on the ground at ride height. Make sure that the tires have equal tire pressure from side to
side. This is commonly overlooked and can significantly change your measurements.




Setting the Caster

Prior to installing your A-arms, thread the Heim joints in all the way on the upper arms. Leave the
front rod end alone and back the rearward rod end out (3) complete revolutions. This is a good starting
point. Now install your A-Arms. Tighten them completely. Rest the straight edge against the side edge of
the upper and lower ball joint threads. (Make sure the straight edge is touching the same section of the ball
joint threads) If the top of the straight edge leans towards the rear of your quad, you have positive caster.
This is what you want. Rest the angle finder on the edge of the straight edge. This will tell you the exact
caster setting. You may need to adjust the Heim Joints by turning one in or out more than the other to get
the appropriate setting. Refer to the above recommendations for how much caster to run.

Setting the Camber

Setting the camber is a much easier process. Rest the straight edge against the outside of your
front tire (making sure both wheels are pointing straight and you are touching the same part of the tire, top
and bottom). The top of the straight edge should lean inward for negative camber. Now put the angle finder
against the straight edge and note the reading. If you need more or less camber, you are going to have to
remove one of the ball joints in order to adjust it. First remove the cotter pin and castle nut off of the ball
joint, then “smackâ€