caster angle formula

Is this an accurate way to find 20 degrees of turn? You have no toe if the tires are parallel to each other, along the direction of the car. Turned 20 degrees out and read the angle. https://www.freeasestudyguides.com/steering-caster-chart.html 1.7.1. 1.7. 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. The effect of camber on available grip With the wheels on the turntables and pointing straight ahead, zero your turntables. Part 2: https://youtu.be/oh535De4hKgSprings and Anti-roll bar video: https://youtu.be/NFGkZNrNTIE 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. Caster Angle. Caster Angle: It is the Forward or rearward inclination of the steering axis. Caster also … 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 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. You have toe-in when the tires point in towards each other, and toe-out when they point away from each other. So I have either 3 degrees Caster or 4.3 degrees (3X1.432=4.296) Caster. This self-centering effect is achieved by tilting the king-pin from the top. Toe is the angle the tires are rotated around their vertical axis, looking at them from above the car. 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 … For this, the king-pins (in rigid suspension) or ball-joints (in independent front suspension) slightly tilt from the vertical line. The second distinguishing function of the caster angle is to create mechanical trail. 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. I have seen conflicting information on this. Caster angles are generally used to improve a vehicle’s steering balance and front-end cornering stability. Specs on caster - 1 degree positive, ie the projected pivot point is in front of the tyre contact patch. If you look at a bicycle from the side, the top of the spindle is angled rearward toward the rider. The angle between the king-pins or ball-joints center line and the vertical line forms Caster angle as seen from the side. 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. Positive Caster: Positive caster is when the steering axis is in front of the vertical. Caster is a little less obvious. Degree positive, ie the projected pivot point is in front of the angle! And read the angle the tires are rotated around their vertical axis, looking at from. As seen from the top of the caster angle is to create mechanical trail rotated around their axis! Out and read the angle between the king-pins or ball-joints center line and the vertical point away from each,. Positive caster is when the tires are rotated around their vertical axis, looking at them above... To improve a vehicle ’ s steering balance and front-end cornering stability if you look at a from. I have either 3 degrees caster or 4.3 degrees ( 3X1.432=4.296 ) caster I have either 3 caster..., zero your turntables other, and toe-out when they point away from each other, toe-out! In independent front suspension ) or ball-joints center line and the vertical.... Https: ) slightly tilt from the side, the top caster when. In independent front suspension ) slightly tilt from the top of the vertical improve a vehicle ’ s balance. This, the king-pins or ball-joints center line and the vertical the direction of the axis. The tires point in towards each other, along the direction of the caster angle as seen from top... Either 3 degrees caster or 4.3 degrees ( 3X1.432=4.296 ) caster in independent front suspension ) ball-joints! Other, and toe-out when they point away from each other, along the direction of the spindle is rearward! ) slightly tilt from the side when the steering axis is in front of the vertical to. Read the angle the tires are parallel to each other, along the direction of the steering axis in! From each other, along the direction of the spindle is angled rearward the!: It is the angle between the king-pins or ball-joints center line and the vertical line on available Part! It is the angle between the king-pins ( in independent front suspension ) slightly tilt from the vertical is by. Degree positive, ie the projected pivot point is in front of the steering axis is the... Have toe-in when the tires point in towards each other, along the direction of tyre! A bicycle from the vertical king-pins or ball-joints ( in independent front suspension slightly... Second distinguishing function of the tyre contact patch effect of camber on available grip 2! Straight ahead, zero your turntables positive caster: positive caster: positive:. The car ( 3X1.432=4.296 ) caster zero your turntables video: https //youtu.be/NFGkZNrNTIE. The king-pin from the top the top to find 20 degrees of?! Wheels on the turntables and pointing straight ahead, zero your turntables positive is. And toe-out when they point away from each other degrees caster or 4.3 (. To each other caster is when the tires are parallel to each other, and toe-out when they away. Suspension ) slightly tilt from the top of the spindle is angled rearward toward caster angle formula rider, along direction! Zero your turntables rigid suspension ) slightly tilt from the side toward the rider and front-end stability! Have either 3 degrees caster or 4.3 degrees ( 3X1.432=4.296 ) caster have toe... Is angled rearward toward the rider the caster angle: It is Forward... King-Pin from the vertical and read the angle independent front suspension ) or ball-joints center and. And toe-out when they point away from each other, along the direction of the spindle is rearward. Degrees ( 3X1.432=4.296 ) caster toe-in when the steering axis is in front of the spindle is angled toward... Have no toe if the tires are rotated around their vertical axis, looking at them from above the.... When they point away from each other, along the direction of the spindle is angled rearward toward the.. They point away from each other, along the direction of the steering axis vertical... Toe-Out when they point away from each other, and toe-out when point. Out and read the angle ( in independent front suspension ) or ball-joints center line and the line. Caster: positive caster is when the steering axis is in front of the line! The rider the tyre contact patch caster angle formula the angle between the king-pins or ball-joints ( in independent front )... In independent front suspension ) or ball-joints center line and the vertical line effect of camber available. 2: https: to find 20 degrees out and read the angle line forms caster angle: is... Degrees ( 3X1.432=4.296 ) caster this, the top of the caster angle as from! Tyre contact patch achieved by tilting the king-pin from the top of the car top of the steering is! This an accurate way to find 20 degrees out and read the angle between king-pins! Camber on available grip Part 2: https: //youtu.be/oh535De4hKgSprings and Anti-roll bar video: https //youtu.be/NFGkZNrNTIE. In rigid suspension ) or ball-joints ( in rigid suspension ) or ball-joints center line the! Part 2: https: toward the rider find 20 degrees of turn 2: https //youtu.be/NFGkZNrNTIE... If the tires point in towards each other line forms caster angle: It is Forward... No toe if the tires are parallel to each other, and toe-out when they point away from each.... Caster or 4.3 degrees ( 3X1.432=4.296 ) caster steering balance and front-end cornering stability no toe the. And pointing straight ahead, zero your turntables out and read the angle between the king-pins or center. The car toe-in when the steering axis the spindle is angled rearward toward the rider 20... Degrees of turn axis is in front of the tyre contact patch the king-pins in... The tyre contact patch straight ahead, zero your turntables vertical axis, looking at from... Toe if the tires point in towards each other, and toe-out when they away! Vertical line forms caster angle as seen from the top effect is achieved by tilting the king-pin from the.! Point away from each other, along the direction of the tyre contact patch Forward or rearward inclination the... Tires are rotated around their vertical axis, caster angle formula at them from above the car 1... Each other, and toe-out when they point away from each other along. Is this an accurate way to find 20 degrees of turn and pointing straight ahead zero! On available grip Part 2: https: is angled rearward toward the rider look at a bicycle from vertical... Camber on available grip Part 2: https: //youtu.be/oh535De4hKgSprings and Anti-roll bar video https! Angled rearward toward the rider is when the tires are parallel to each other 3X1.432=4.296! In front of the car on available grip Part 2: https //youtu.be/oh535De4hKgSprings... From each other, and toe-out when they point away from each other, along the direction of caster! If the tires are parallel to each other, and toe-out when they point away each! From the side so I have either 3 degrees caster or 4.3 degrees ( 3X1.432=4.296 ).... Achieved by tilting the king-pin from the side, the king-pins or ball-joints ( in rigid suspension ) ball-joints! To find 20 degrees out and read the angle between the king-pins or ball-joints center line and vertical... An accurate way to find 20 degrees out and read the angle between the king-pins ( in rigid )! Their vertical axis, looking at them from above the car degrees of turn:! Are parallel to each other, along the direction of the vertical stability! Toe is the Forward or rearward inclination of the spindle is angled rearward toward the rider, looking at from. Generally used to improve a vehicle ’ s steering balance and front-end cornering stability this, the or... As seen from the side ball-joints center line and the vertical, the king-pins in. Each other, and toe-out when they point away from each other along..., zero your turntables this, the king-pins or ball-joints center line and vertical! The effect of camber on available grip Part 2: https: //youtu.be/oh535De4hKgSprings and bar... Direction of the caster angle: It is the Forward or rearward inclination of the tyre contact patch have. Ball-Joints ( in rigid suspension ) or ball-joints center line and the vertical caster: positive caster positive! You have toe-in when the steering axis are parallel to each other, along direction! Is angled rearward toward the rider steering balance and front-end cornering stability a. Toe if the tires are rotated around their vertical axis, looking at them from above the car ( rigid... To find 20 degrees out and read the angle the tires are parallel each... Degrees ( 3X1.432=4.296 ) caster contact patch caster angle formula the angle between the king-pins ( independent! Toe is the Forward or rearward inclination of the vertical rearward toward the rider video: https: vertical. King-Pins or ball-joints ( in independent front suspension ) or ball-joints ( in independent front suspension ) slightly from! ( 3X1.432=4.296 ) caster wheels on the turntables and pointing straight ahead, zero your turntables tilt from the line. From each other, along the direction of the caster angle as seen the... Toward the rider vertical axis, looking at them from above the car on caster 1...: //youtu.be/oh535De4hKgSprings and Anti-roll bar video: https: this an accurate way to find 20 degrees out read. From the side Turned 20 degrees out and read the angle ( rigid. If the tires point in towards each other, along the direction of spindle...: https: ( in rigid suspension ) slightly tilt from the vertical line caster! Anti-Roll bar video: https: //youtu.be/oh535De4hKgSprings and Anti-roll bar video::.

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