Front Suspension

Question 1

What is negative camber?

Answer 1

Inward tilt at the top of the wheel as viewed from the front.

Question 2

Positive caster is the forward tilting of the steering axis as viewed from the side. T or F

Answer 2

False/ Positive caster is the rearward tilting of the steering axis as viewed from the side.

Question 3

What can be done to eliminate caster change during suspension travel?

Answer 3

The correct answer is: Arrange the upper and lower control arms to swing in the same arc.

Question 4

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?

Answer 4

Increase air pressure

Question 5

How can scrub radius be changed on a race car?
Change wheel offsets
Remove wheel spacers
Increase tire size

Answer 5

All the above

Question 6

Increasing positive caster from 4 degrees to 6 degrees on the RF of an asphalt modified will

Answer 6

Cause camber to go more negative when steered left

Question 7

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

Answer 7

True/

Question 8

To eliminate bump steer, the tie rod must be parallel with the lower control on a race car. T or F

Answer 8

False

Question 9

Bob is trying to raise the roll center on his race car and move the roll center to the right. What can he do?

Answer 9

Put a taller ball joint stud in the right front

Question 10

Bill is trying to eliminate bump steer on his road race car. What can he do?

Answer 10

Change tie rod angle

Change tie rod length

Question 11

Anti-dive is a mechanical effect that resists the diving motion of the front end while under deceleration.

Answer 11

True

Question 12

When measuring camber, the wheels must be steered

Answer 12

Straight

Question 13

When the front of the tires are farther apart than the rear of the tires, you have what type of toe?

Answer 13

Toe-out

Question 14

Andy is trying to measure ackerman on his Mazda Miata. How many degrees must the wheels be steered?

Answer 14

10 degrees

Question 15

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?

Answer 15

20 degrees

Question 16

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?

Answer 16

Rearward

Question 17

A race car will pull to the side with the most positive caster.

Answer 17

False/ A race car will pull to the side with the least positive caster.

Question 18

Increasing caster split would make the car easier to turn in on an oval track with tight corners.

Answer 18

True

Question 19

Camber will pull to the side with the most

Answer 19

Positive camber

Question 20

Reverse ackerman causes the front wheels to_____________________ when steered.

Answer 20

Toe-in

Question 21

Measuring tires with a durometer is needed to look at relative hardness of the tire.

Answer 21

True

Question 22

Front roll center can only be changed by using different ball joints.

Answer 22

False

Question 23

Increasing spindle inclination can be useful in creating more weight jacking and provide better driver feedback.

Answer 23

True

Question 24

Shorting the length of the upper control arm will have no dynamic effect on camber in a corner.

Answer 24

False/ Shorting the upper control arm will cause the car to gain more dynamic negative camber in a corner.

Question 25

Decreasing scrub radius will provide the driver with better feedback.

Answer 25

False/ Increasing scrub radius will provide the driver better feedback.