Table of Contents
What is king pin angle?
On current suspension systems, the kingpin is set at an angle to the vertical plane when viewed from the front or rear of the vehicle. This angle is known as the king pin inclination. The purpose of the KPI is to produce vertical displacement of the vehicle in during steering in an upward direction.
What does kingpin angle effect?
The kingpin angle has an important effect on steering, making it tend to return to the straight ahead or centre position because the straight ahead position is where the suspended body of the vehicle is at its lowest point.
What is SAI on a car?
Return. Steering Axis Inclination (SAI) SAI is the measurement in degrees of the steering pivot line when viewed from the front of the vehicle. This angle, when added to the camber to form the included angle (see below) causes the vehicle to lift slightly when you turn the wheel away from a straight ahead position.
How is kingpin measured?
kingpin to center of single axle or center of tandem the over length kingpin is measured from the kingpin to the rear of the trailer or overhang. If the kingpin is over 50′ the vehicle or load is over length and needs a permit.
What is cross caster?
Caster Spread. Caster spread (or cross caster) is the difference in caster values between the left and right side of the vehicle. Tweaked subframe positioning may also affect cross caster.
What is a king pin inclination?
On current suspension systems, the kingpin is set at an angle to the vertical plane when viewed from the front or rear of the vehicle. This angle is known as the king pin inclination. The purpose of the KPI is to produce vertical displacement of the vehicle in during steering in an upward direction. The larger the KPI, the larger the effect.
How to replace King Pins?
Pressed out the old King pins with an manual bench pressjack and replaced the old ones with oversized King Pins. When i checked out the rest i dicieded to Change out the Tie rod drag link, Pitman Ball stud.Tie rod ends+boots, leaf spring shakles and the shock absorber.
What is kingpin inclination?
Kingpin inclination. While no current-era automobile front suspension incorporates a physical kingpin, the axis defined by the steering knuckle pivot points acts a “virtual kingpin” about which the wheel turns. This virtual kingpin is inclined toward the centerline of the vehicle at an angle called the kingpin angle.
What is a king pin steering?
Kingpin (automotive part) The kingpin, also king-pin and king pin, is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus.