Front Suspension Flashcards
What is negative camber?
Inward tilt at the top of the wheel as viewed from the front.
Positive caster is the forward tilting of the steering axis as viewed from the side. T or F
False/ Positive caster is the rearward tilting of the steering axis as viewed from the side.
What can be done to eliminate caster change during suspension travel?
The correct answer is: Arrange the upper and lower control arms to swing in the same arc.
Mike’s is testing his race car on the skid pad. He is taking tire temperatures on the RF. His temperatures are as follows:
Inner - 160 Middle - 120 Outer - 165
What is needed to balance the tire temperatures?
Increase air pressure
How can scrub radius be changed on a race car?
Change wheel offsets
Remove wheel spacers
Increase tire size
All the above
Increasing positive caster from 4 degrees to 6 degrees on the RF of an asphalt modified will
Cause camber to go more negative when steered left
Positive caster in race car increase steering wheel return ability, provides driver feedback, and cause camber to change when the when the wheel is steered. T or F
True/
To eliminate bump steer, the tie rod must be parallel with the lower control on a race car. T or F
False
Bob is trying to raise the roll center on his race car and move the roll center to the right. What can he do?
Put a taller ball joint stud in the right front
Bill is trying to eliminate bump steer on his road race car. What can he do?
Change tie rod angle
Change tie rod length
Anti-dive is a mechanical effect that resists the diving motion of the front end while under deceleration.
True
When measuring camber, the wheels must be steered
Straight
When the front of the tires are farther apart than the rear of the tires, you have what type of toe?
Toe-out
Andy is trying to measure ackerman on his Mazda Miata. How many degrees must the wheels be steered?
10 degrees
Greg is measuring the caster on the right front of his drag car. He is using a Longacre caster / camber gauge. How many degrees should he turn the wheel to the right?
20 degrees
Josh is trying to increase the ackerman on his dirt late model. The car is a front steer car with an adjustable rack and pinion mount. Which way should he move the rack and pinion?
Rearward
A race car will pull to the side with the most positive caster.
False/ A race car will pull to the side with the least positive caster.
Increasing caster split would make the car easier to turn in on an oval track with tight corners.
True
Camber will pull to the side with the most
Positive camber
Reverse ackerman causes the front wheels to_____________________ when steered.
Toe-in
Measuring tires with a durometer is needed to look at relative hardness of the tire.
True
Front roll center can only be changed by using different ball joints.
False
Increasing spindle inclination can be useful in creating more weight jacking and provide better driver feedback.
True
Shorting the length of the upper control arm will have no dynamic effect on camber in a corner.
False/ Shorting the upper control arm will cause the car to gain more dynamic negative camber in a corner.
