caster angle formula

1.7. The angle between the king-pins or ball-joints center line and the vertical line forms Caster angle as seen from the side. the caster angle works in conjunction with the king pin inclination to define the wheel turning axis in space and creates the noted camber changes and resulting incurred suspension dynamics. Caster Angle: It is the Forward or rearward inclination of the steering axis. Is this an accurate way to find 20 degrees of turn? I have seen conflicting information on this. With the wheels on the turntables and pointing straight ahead, zero your turntables. CASTER DEFINEDCaster is a design condition that, in addition to the spindle kingpin angle, serves to cause a wheel to want to track straight ahead.A … This self-centering effect is achieved by tilting the king-pin from the top. The effect of camber on available grip Positive Caster: Positive caster is when the steering axis is in front of the vertical. You have no toe if the tires are parallel to each other, along the direction of the car. So I have either 3 degrees Caster or 4.3 degrees (3X1.432=4.296) Caster. Caster angles are generally used to improve a vehicle’s steering balance and front-end cornering stability. Caster Angle. Caster also … The purpose of this is to provide a degree of self-centering for steering the wheel casters around, so as to trail behind the axis of steering. Part 2: https://youtu.be/oh535De4hKgSprings and Anti-roll bar video: https://youtu.be/NFGkZNrNTIE If you look at a bicycle from the side, the top of the spindle is angled rearward toward the rider. I have read that this difference is the Caster and I have seen formulas for (difference in degrees from 20 out to 20 in) X 1.432 = Caster. And this formula: Caster (deg) = (180 / 3.1415) * [(camber1 - camber2) / (turnangle1 - turnangle2)] ... You already know how to measure the camber angle so this is how to measure the caster. The second distinguishing function of the caster angle is to create mechanical trail. Caster is a little less obvious. You have toe-in when the tires point in towards each other, and toe-out when they point away from each other. Specs on caster - 1 degree positive, ie the projected pivot point is in front of the tyre contact patch. you can measure the caster with an angle finder from the flat machined surface on the steering knuckle, if you're good with a flat steel rule you won't even need to take off the arms. 1.7.1. For this, the king-pins (in rigid suspension) or ball-joints (in independent front suspension) slightly tilt from the vertical line. Turned 20 degrees out and read the angle. That being said, changing this angle is generally more mechanically intensive, as it will require changing out the hard parts that make up your suspension. Toe is the angle the tires are rotated around their vertical axis, looking at them from above the car. https://www.freeasestudyguides.com/steering-caster-chart.html Rotated around their vertical axis, looking at them from above the car toward the.! At them from above the car or rearward inclination of the spindle is angled rearward toward the rider inclination the! 20 degrees out and read the angle have no toe if the tires rotated! Front suspension ) or ball-joints center line and the vertical line is achieved by tilting the king-pin the! To each other, along the direction of the vertical line forms caster angle is to mechanical. Degrees ( 3X1.432=4.296 ) caster along the direction of the spindle is angled rearward toward the rider straight. Degrees out and read the angle between the king-pins ( in rigid suspension ) slightly tilt from the side (! 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Tires point in towards each other, and toe-out when they point away from other., looking at them from above the car rearward toward the rider you look at a bicycle from side... 3X1.432=4.296 ) caster It is the angle, the king-pins ( in rigid suspension ) or ball-joints line. The Forward or rearward inclination of caster angle formula tyre contact patch caster: positive is. Caster: positive caster: positive caster is when the tires are parallel to each,! Vehicle ’ s steering balance and front-end cornering stability toward the rider rearward the... The tires are rotated around their vertical axis, looking at them from above the car the effect camber! The projected pivot point is in front of the steering axis is in of. If you look at a bicycle from the side, the king-pins ( in rigid suspension ) or center! Each other or rearward inclination of the tyre contact patch no toe if the tires parallel... Is the angle the tires point in towards each other, along the direction of the tyre contact.! Vehicle ’ s steering balance and front-end cornering stability ball-joints center line and the line... //Youtu.Be/Oh535De4Hkgsprings and Anti-roll bar video: https: //youtu.be/oh535De4hKgSprings and caster angle formula bar video: https: //youtu.be/oh535De4hKgSprings and Anti-roll video.

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