OFNA Racing Jammin X2 Buggy - Manual (Page 31)

SETTING GUIDE
FRONT CAMBER ANGLE SETTING REAR CAMBER ANGLE SETTING
Place the model car on flat surface. Raise the chassis to it's maximum clearance
before the wheels leave the ground.
Adjust the length of the front and rear upper arms so that the wheels are right angle to the
ground.
The camber angle adjustment can move the turnbuckle rod on the upper arms
clockwise or anti-clockwise.
(We suggest to use zero degree for the front and 1.5 degree for the rear.) negative
FRONT TOE-IN AND TOE-OUT SETTING
TOE-IN
NEUTRAL POSITION
Making the tie rod shorter will make the front
tires become toe-out.
Response will be quicker and will under steer.
REAR SHOCK ANGLE SETTING
1 2
Firm rear suspension, over steering.
Soft rear suspension, under steering.
Steering Rod
FRONT SHOCK ANGLE SETTING
Firm front suspension, less steering.
Soft front suspension, more steering.
1 2 3
Soft
Soft
Soft
Firm
Firm
Firm
Adjust the length of front steering rod to
change the toe angle.
Making the tie rod longer will make the front
tires become toe-in.
Response will be slower and will over steer.
1 2
Soft Firm
Adjust the front caster angle by changing the arm block "A" or "B" on the front lower arms.
After you set the caster angle , you will also need to adjust the front upper arm position.
The final caster also depends on the kick-up setting.
Example:15 degree caster on C-hub + 7degree kick-up+"A" lower arm block =22 degree final caster.
15 degree caster on C-hub + 7degree kick-up+"B" lower arm block =20 degree final caster.
Caster angle Characteristics
Decreases off-power steering into a corner.
Increases on-power steering out of and in a corner.
Increases straight-line stability.
CASTER ANGLE
A
A
B
B
7 degree
15 degree
on C hub
REAR WHEELBASE
0
327mm 329.5mm 324.5mm
Adjust the wheelbase by using the spacers on either side of the rear uprights (at the bottom pin).
less spacers in front of the rear upright.
- increases rearward weight transfer during acceleration.
- increases on-power traction.
- quicker off-power steering into corners.
- slight tendency to push on-power at corner exit.
- increases steering response.
- better on tighter, more technical tracks.
more spacers in front of the rear upright.
- decreases off-power steering into sharp corners.
- increases stability.
- slower initial steering reaction (off-power).
- improves on-power steering at corner exit.
- better handling over bumps and ruts.
- better on more open tracks with high-speed corners.
IMPORTANT! Make equal adjustments on both left and right sides of the car.
Shorter wheelbase
Longer wheelbase
(With 2.5 degree rear toe-in.)
- +
Turnbuckle
- +
Negative Positive
- +
Turnbuckle
- +
Negative Positive
TOE-OUT
1 2 3
Increases off-power steering into a corner.
Decreases on-power steering out of and in a corner.
Decreases straight-line stability.
Less caster
More caster
TOE-OUT