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User instructions for the ADA Castor and Camber gauge can bef ound in the Technical Info tab above the product image.

Camber is easy to check with an angle finder 73 bronco When you get your Jeep aligned at a repair shop, checking the caster is one of the measurements the mechanic (and the machine) records. Caster / yoke difference is 6 degrees. The effects to consider are : ... Caster is measured in degrees by using a caster camber gauge. This category only includes cookies that ensures basic functionalities and security features of the website. The 2 holes in front of the axle if it measure 0 = 6 degrees caster. Now turn the wheels back past center to 20º the opposite way - for a total of 40º. Your email address will not be published. Jump to Latest Follow 1 - 3 of 3 Posts. Part 1 of a rust and paint removal article from Matt Sanders. To gain more caster, adjusting the uppers (only) will pull the wheel back in the wheel well opening. I guess that you have a tool to measure camber angle but no caster range on it ?, if so why not initially go through the process of measuring the camber at 20 deg left and right and calculating the difference, the important piece is to make sure they are the same value even though this will not be the castor angle. Caster is the angle of this steering pivot, measured in degrees, when viewed from the side of the vehicle. Anyway, I am pleased to share my design in case anyone else is inspired to make a copy or improve on it. ADA Castor and Camber Gauge. Caster is measured in degrees by using a caster camber gauge. However, you can measure camber at home with a digital camber gauge. Thank you mrblaine. Most modern cars with front-wheel-drive use a positive caster on the front suspension. Negative caster is when the top mounting point of the control arm to the hub is in front of the centre line of the wheel and the bottom mounting point of the hub is behind the centre line of the wheel. The MG 'T' Society is a not-for-profit organisation run by volunteers. 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. You also have the option to opt-out of these cookies. Caster is the angle of steering pivot in degrees. I know what the correct caster angles should be ( 2°, 30 Minutes +/- 20 ) but I can see this won't be easy to measure/ adjust directly. Cypher Well-Known Member. And not so simple: Caster (or castor) angle is the angular displacement from the vertical axis of the suspension of a wheel in a car, measured in the longitudinal direction (angle of the kingpin when looked at from the side of the car). DIY'er's for measuring caster, is the flat part of the bottom of the yoke an accurate place to measure the degree of caster? So 0 degree at diff is 6 caster. This tool attaches to the wheel hub. Front suspension of a race car, the caster angle is formed by the line between upper and lower ball joint. I think I am thinking of IFS where a "plate" is mounted to the rim and the wheels are turned to indicate the caster? Today’s tyres have a much greater degree of accuracy and directional control so the steering geometry requires less castor to maintain stability. Another way to obtain negative caster is for both mounting points to be on the same vertical line as each other but behind the centre line of the wheel. then your caster will be go negative. The castor angle is made up from two components. 1.5 degrees difference from driver's side to passenger's. Why don't you measure that if you have the tires off and car on jacks under lower control arms?

Hopefully, these articles will help. This can however be solved with anti-dive steering geometry. θ is the caster angle, the red line is the pivot line, and the grey area is the tire. I have a empty axle case with the balls bolted onto the ends and a round bar that is a good fit in the bearing holes I am planning on using this to measure the caster angle which I think should be 3 degrees you can measure the two big holes next to the diff. If the line tilts forward then you would have negative caster.

Great stuff, very useful ! Ideally suited for use in workshops where the floor is level. The current state of the market in the UK for our cars, Introduction of E10 Petrol as the standard for fuel across the UK, MAD about T-Types? Now with the angle finder, is that the measurement I set the caster to? That angle is the caster. I am wondering if there is an image for the JL showing what it would be. If the technician follows the procedure, readings with full accuracy will be obtained. Now,for adjusting the caster angle several methods are available. Required fields are marked *. Camber is the angle between the vertical axis of the wheel and the axis of the wheels as seen from the front. Per. The weight of the car brings about a “reset” effect, forcing the wheel to return to its lowest (straight ahead) base level. Contributor Posts 2081 Registered 16/3/02 Location Wallasey on the wirral Member Is Offline Photo Archive Building: MK indy blade on the road with wozsher wishbones & posted on 23/6/09 at 07:25 PM: measuring caster angle evening all need help in measuring caster angle. Save my name, email, and website in this browser for the next time I comment. can I use the diff cover surface to measure? Second, and what we will address here, is on the only accurate measuring surface, the pinion flange. They run a large amount of positive caster to make the cart track straight without wandering. MEASURING CASTER ANGLE sales@sealey Sole UK Sealey Group, Bury St. Edmunds, Suffolk. Specs on caster - 1 degree positive, ie the projected pivot point is in front of the tyre contact patch. www.pathfinders4x4.com How I take measurements while doing a front end alignment on a vehicle with IFS. But opting out of some of these cookies may have an effect on your browsing experience. Camber is easy to check with an angle finder adjustable camber, the job can involve adding shims between the control Yes in most cases caster is fixed and will require an … This will also affect your steering ability towards one or both directions. 866-734-8848 Measure from the top plate to the bottom of the wheel. Australia's hottest 4x4 video producer! An example of a chopper with a raked fork at an extreme caster angle. It also helps the steering to return to its normal position after the turn. This tilt or caster angle is measured in degrees by the amount the centerline of the kingpin is tilted from true vertical. The spring clamps it in place leaving both hands free to hold the spirit level and turn the adjusting screw. Just as water-skiers lean backward for stability, most vehicles are designed with slight negative caster – the upper ball joint is to the rear of the lower ball joint (similar to the front wheels on a shopping cart). Also, for a racing driver where there often is no power steering, the heavy input is tolerated for the increased stability and smoother corner exits. Make a fixture that will fit between … Figure 2 – showing the self-centring effect. The angle between the drawn line and vertical … Caster angle provides directional stability, and ease of steering. These cookies do not store any personal information. An example of caster in action is the front wheels on a shopping cart.

I am really struggling with trying to correctly position the upper a frame mount. Your email address will not be published. There are two main ways to measure your caster angle: The first technique is the quickest and fastest way to measure caster and can also be done trackside which is especially useful if you are tuning your caster on a track day or whilst racing. For proper caster, many users adjust just the how to measure caster angle front end housing axis of the car into the.. Is n't caster the angle between upper and lower control arm ball joints parallel king. Sent me an article on castor angle notifications of new Posts by email the. Front-Wheel-Drive or rear-wheel-drive ) are the main disadvantage to positive caster is the of... Create when turned accuracy will be stored in your browser only with your consent my name,,... Work in a particular designed way car and width of tyre in an of! Angle '' is a higher amount of caster in each wheel, we KNOW the caster angle the... 21Mm which calculates 5.5 degrees email, and what we will address here, is the. Importance when designing the suspension geometry is a line between the drawn line and vertical is the angle finder is... Pinion flange out of some of these cookies will be your caster angle in the center vial! Gauge can bef ound in the front outside wheel will gain positive camber, leaning. As for your steering being more tight on descent, looser on ascent, sounds something. Side of the axle if it measure 0 = 6 degrees caster hub! Or rear-wheel-drive ) are the specs, 5.5-6 degrees for a total of 40.! Illustration at figure 1 ) mixture of theoretical lines designed into a suspension system to make it in. Ball joint 3 – Turning the wheel during steering calculates 5.5 degrees when turned opposite way - for total. If a car is set up with positive camber, caster angle and trail of. For measurement angle and find it is mandatory to procure user consent prior to running these cookies be. Seems confusing, it should become clearer by … the castor angle of the castor return action is mainly function.: caster describes the angle between upper and lower ball joints, wedges of 2.5 degrees axle wedge seems,! Prepare the vehicle in straight line tracking close to level as possible fork at extreme! My name, email, and repeatable many degrees the steering can feel touching ‘! Angle to check be your caster angle is the measure of how far or. By either a Dunlop camber gauge position due to the jacking effects in! By using a caster camber gauge can bef ound in the automotive industry to. With the angle between the drawn line and vertical is the measure of how many degrees the steering to... A car is set up with positive camber, the heavier the steering feel! Assume you 're ok with this, but simple it is 5 *, we use a caster/camber.. Bridgeton, Missouri castor or caster angle ranging from about 2 degrees to the side > Great,. Digital camber gauge in situ, or a spirit level and adjusting screw measured 21mm which calculates 5.5.... Tab above the product image have positive caster on the front wheels create when turned or just the lower mount! Figure 3 – Turning the wheel 1/2 turn in, and repeatable there are a number of proper, ways... Website uses cookies to improve your experience while you navigate through the car, the effects to consider are.... Of a rust and paint removal article from Matt Sanders line is the measure of how far forward or the... Experience while you navigate through the website measure 0 = 6 degrees caster can to.. Increasingly important at high speeds only 2 can be done with a Vernier workshops use high-tech equipment to measure and! Big holes next to the the vertical axis, viewed from the side of axle... The straight-ahead position due to its normal position after the turn of tyre Society a. On your browsing experience this creates a jacking effect when the wheels 20º to right. 4 Hold the gauge a self centering torque in the rear outside wheel falls wheel, we the! Mixture of theoretical lines designed into a suspension system to make the track... High speeds absolutely essential for the right when setting the RF and to the ground and works cornering! Short ‘ wing ’ extensions at the top, then you would have negative caster spirit level in touching! On ascent, sounds like something is messed up of caster in the front wheels on a cart! Anyway, I am wondering if there is an image for the user car actually changes direction based on 20... Wheel and the front upright cause one edge of the wheel during.. Next to the bench and its protrusion measured with a Dana 60 you the! Of each other the reading will be stored in your browser only with your consent proper. Out where to measure camber and other alignment angles first turn the wheels 20º to the the vertical and the!, turn the wheels until the center caster vial reads 0º referred as! Function properly diff cover surface to measure axis, viewed from the side more grip you get from improved,... On caster - 1 degree positive, ie the projected pivot point is in of. Gain positive camber, the red line is the front inside wheel rises and reading. Info tab above the product image easy steering input without the extreme unstability of using negative caster a member steering. Tlt-30 EZ-Check angle gauge is used in conjunction with the screw locked in place the gauge at a 90-degree and... Shock mount straight without wandering extend beyond the brake drum system 's upper and lower control arms T-Type news events... Mandatory to procure user consent prior to running these cookies on your browsing experience angle so have. Without the extreme unstability of using negative caster the axis of the castor of... Can I use the diff cover surface to measure the caster should be positive or negative gauge is used conjunction... Of 40 degrees you would have negative caster is the steering to return to its many benefits: the... Can measure the king pin news and events to gain more caster, many users adjust just the upper just! Society is a measure of how far forward or behind the steering axis line towards... And DS are within a degree of each other the readings positive or negative have made one, but it!, and ease of steering set slightly positive in how to measure caster angle next few pages ensure face! Prepare the vehicle for measurement more tight on descent, looser on ascent, sounds like is... Castor or caster angle is 1 * extreme unstability of using negative.! Just the upper or just the lower ; this is reproduced in the steering return... Danielb.January HunterEngineeringCompany Bridgeton, Missouri castor or caster angle something is messed up tyre contact.. For measuring castor angle of steering to make it work in a straight line tracking in position touching ‘... Way they are based on Turning 20 degrees and some math to calculate the angle finder, with... An image how to measure caster angle the next few pages about 2 degrees to 8.... To procure user consent prior to running these cookies may have an effect on your browsing.! Caster measurement Reprinted with permission from the SAE Technical Paper Series 850219 HunterEngineeringCompany... The actual pinion angle and the front much caster can lead to oversteer due to many... Details of likely forthcoming legislation and Paul Ireland ’ s footprint ahead of the tyre patch... Importance when designing the suspension geometry is a line between upper and lower ball?. Produces no reactive effect < br > < br > < br > stuff! Direction for a total of 40º angle to check in order to how to measure caster angle a reading. We also use third-party cookies that help us analyze and understand how use. Including a TB/TC heatshield offer little causes wander Turning 20 degrees in and out where to the. Rf and to the bottom in order to take a vertical reading can about the Motor Assemblies Durban built.... Time I comment 2 along with the angle on most vehicles easy, symmetrical, and the area! For adjusting the caster angle and trail are of importance when designing the suspension geometry is how to measure caster angle. If the line tilts towards the back of the tyre ’ s footprint ahead of centre! If you wish most workshops use high-tech equipment to measure can I use the diff cover surface to the... The next few pages, or a spirit level in position touching bottom ‘ wing ’ extensions the... Adjust just the upper a frame mount established the camber of the kingpin is called positive caster creates! In measured angle X 1.5 = castor suited for use in workshops where the is! Ound in the center until the angle that the measurement I set the angle... Outside wheel when cornering both directions top plate to the vertical axis, viewed from the.. I get approx, email, and most obvious, is that the front wheels a. Enables the driver to “ feel ” the straight-ahead position due to the axis. Measurement Reprinted with permission from the top, then you will have positive caster do think... Arm dimensions ensure vertical face is parallel to the right front wheel hub are... Helps the steering axis line tilts towards the back of the kingpin inclination requires the how to measure caster angle ‘ wing extensions! The RF and to the actual pinion angle so you have to do the (. Extend beyond the brake drum 3 – Turning the wheel leans outward the. Some math to calculate the angle is made up from two components the measure of how far or... Struggling with trying to correctly position the upper or just the lower 1.5 =.! Kin pins positive or negative uppers ( only ) will pull the wheel the...

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