This is the 3 Link kit from our Legend Suspension kit. The RRS 3-Link is designed to limit this fore/aft movement of the differential housing to 15mm (throughout its travel) which substantially minimises roll under-steer. It should also be the same length and angle as the drag link, and the mounting points should be the same height. Also one more quick question... i am building a single triangulated 4link with a bit of triangulation in the lowers for the rear end. • Reduces rear end squat for superior acceleration. 3 link setups Part 2. Has anyone run a similar set up with the lower control arms not perpendicular to the axle? This superior geometry results in eliminates roll under-steer, accurate turn in and superior steady-state cornering, which makes the car more neutrally balanced and endows it with more predictable handling. • Drastically improved suspension geometry. Watch as we cover some of the steps to install our 3 Link rear suspension system. In terms of movement left and right...thats what the trac arm does. • Neutral handling characteristics making the vehicle. A link length change of 1" or a link angle change of 5º can make a noticeable change to handling. - Diff centre and axles shafts available if required. btw the axle is a 60 and with a width of ~60 in. Preload adjustment and dampening adjustment. The RRS Trans Am 3 link now covers Falcons from XK to EL (1960- 1992). As the factory leaf spring system compresses, the differential housing can move forward as much as 60mm. The RRS 3-link is designed to transform the handling of an early Ford chassis to match or exceed the demands of new millennium performance production Fords. Mumford Linkage suits Aust. one side down one side up), this moves one side further forward than the other – which induces roll under-steer. If your wheel well openings have been modified to accept very wide or very large diameter tyres that run close to the guard, you may experience guard fouling problems with the RRS 3-Link due to the different arc of travel the differential housing now moves through. In this article we'll cover what we consider to be the three most important elements: anti-squat, anti-dive, and roll center. There's lot's too think about with a 3 link. As the factory leaf spring system compresses, the differential housing can move forward as much as 60mm. What you are saying is instead it just moves the axle from being square to the vehicle. You'll see from the calculator that the upper link geometry largely determines how your vehicle reacts to the forces of acceleration and braking. The Metric four-link suspension design is a bit different than most other rear suspensions. Both sides at ride height to be square.) RRS 3 Link Rear Suspension Coil Over Assembly Includes: - Mumford or Watts link mount frame assembly. A couple of examples of the typical inaccuracies introduced by rust repair work include; lateral shrinkage when adding new floor sections and lateral spreading when adding a new tunnel. i know there is a certain distance it has to be from the left lower arm. It is basically a triangulated four-link in which the … To accommodate these unknown variables, all RRS mounts and frames are manufactured for ease of fitment and allow for significant chassis variations. With a normal 4 link, when you hit the brakes, the suspension geometry wants to lift the rear of the vehicle…. The CorteX Torque arm changes the anti-squat and anti-lift geometry of the rear suspension. The 3 link The 3 link is also just like it sounds, sort of. The RRS 3-Link is designed to limit this fore/aft movement of the differential housing to 15mm (throughout its travel) which substantially minimizes roll under-steer. Axle housing adaptors available in bolt on and weld on. do I have to keep a certain seperation? • The RRS 3 Link rear suspension system boasts dramatically improved suspension geometry over the inferior factory leaf spring set up. If one wheel moves over a hump or dip in the road then the axle will tilt causing both wheels to become cambered. I am running balistic joints on both ends of my control arms and track bar. With Any rear suspension (2‐link or 4‐bar). Suspension geometry characteristics of a live axle are as follows: 1. There's actually still 4 link bars holding the axle in place, but in completely different orientations. (Right) The frame rails also featured adjustable upper mounts to allow you to dial in the suspension geometry for maximum traction. When a mustang is lowered from the factory ride height the rear suspension geometry is compromised reducing rear grip under acceleration. There is a 4 link and 3 link calculator on pirate, make sure you get the 3 link or your numbers will be off. looking for some info on seting up a 3 link rear suspension. A frame side Panhard/J-Bar mount that adjusts quickly can maximize practice time ensuring you have every chance to dial in the car. The 4130, 1.25-inch OD link tubes featured weld-in adapters and hex adjusters. Link tubes were also available in larger 1.375 and 1.625-inch diameters for high(er)-horsepower applications. This one is solely effected by the suspension geometry. Best of all, the modular design incorporates generous user-adjustable settings including; ride height, damper tuning, pinion angle, lateral differential location and roll centre height (for fine tuning the vehicle’s handling characteristics). right now the upper arm goes to the top of my truss I was thinking of relocating the mount to the back of the truss perpendicular to where it is now. A 3link is simple. If your vehicle has a steering box, the panhard should follow the drag link as close as possible. ok cool the orientation ont change it will just be moving back about 3-4" and down about 2" so i think that will work then? A forum community dedicated to custom off-road vehicle owners and enthusiasts. The 3-link is our race-proven, and streetable upgraded solid-axle rear suspension. In comparison, Ford’s original construction tolerances were quite loose, with variances of up 8mm (5/16”) being observed. - Optional new 9" Axle Housing supplied if required. The basics of suspension geometry, as well as a diagonally identical wheelbase, spring rates, and wheel offset, must be adhered to if you want your car to handle well. It will utilize a Speedway Motors G-Comp watts link to keep the rear end right where it needs to be, and adjustable coil-overs. see thats the kind of stuff i need to know I am new to this stuff and I am finishing a project that was already started. • Superior ride & outstanding cornering ability. In terms of movement left and right...thats what the trac arm does. i have a question that is sort of on topic on the front of my buggy I have to relocate the upper arm back farther to clear the trackbar. The geometry can cause the front end to … Also collision and rust repairs can result in considerable movement of structural members. UNIVERSAL FRONT 3-LINK KIT . These adjustments will minimize bump steer. If i am correct the lower control arms will want to oppose this left to right motion because of the triangulation. New floors often entail new seat boxes. Click here to view these 4x4 calculators. 3 While those are the facts, they're not the whole story. 2. I have built some triangulation into the lower control arms and now after thinking about it, my track bar is going to want to move the axle left and right as it moves up and down. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. I will see if I can post some pics up later today so you guys can see what i have goin on. How will this affect the front suspension in terms of binding? The bell-crank and link system of a Watts Link keeps a car's chassis centered over the axle as the suspension moves the chassis up and down, whereas the arc of the Panhard Bar's movement shifts the chassis sideways during that process. But, for now, we’ll focus on the three-link fabrication. When the vehicle doesn’t have a steering box (like on a rig with full hydro), t… With 10* of triangulation in each of the lowers, will 24 degrees of triangulation in each upper be enough to keep the axle centered under the jeep? All track bars will move the axle side to side some, especially when the. • All hardware and detailed instruction supplied for easy bolt in installation. Dave's Customs Unlimited universal front 3-link kit is an excellent option for the person that wants to do it themselves.. We have put … What angles should I start with on the lower link's and the panhard bar. Our 3-link rear suspension uses a Ford 8.8″ solid axle rear end, and was developed for … When designing a 3-link suspension … the upper link can be offset (still parallel to the chassis centerline) to the passenger side to counteract the torque transmitting … My modified uses a 15-inch long rubber biscuit upper link attached to a roll cage cross bar … A 3link is simple. Figure 3 - Independant front suspension on the 2017 Ford Raptorshows an example of one of these systems on a Ford … This also makes sence. The RRS bolt-in 3-Link features better geometry than any factory four-link set-up. Vertical seperation and the arm angle mean something, and the length relative to the lower arm. • Quality chrome silicon steel springs. Falcon 1967 - 1979, Other US Applications - please enquire by email [email protected], Other US Applications - please enquire by email. Some model use a Watts link, other a mumford, All RRS 3 link systems are rated to 1200HP, The long torque stiffens the car and improve launch. JavaScript is disabled. Suspension Geometry The setup is adjusted so the car rotates or rolls into the corners, gains traction on corner entry, and carries speed through the corners for faster lap times. It locates the axles the prevent side to side movement. Exactly where on the axle the upper arm connects doesn't mean much. suspension uses a double a-arm style linkage system. Mark told PHR: "Three-link rigid axle suspension systems derive their name from the fact that the axle is located under the car with three trailing arms, in conjunction … • The RRS 3 link makes the handling of the car more neutrally balanced and endows the car with predictable handling. SOME GENERAL NOTES ON SQUAREING REAREND ON 3‐link setups From the back of the axle tube to the back of the square tubing where trailing arms Weld onto the chassis will be (19 ¼ in. The slider version allows for precision locating and increments as small or as large as you need. Everyone just refers to it as a 3 Link, because it uses only 3 control arms. Many installers use the seat mounting holes in the seat boxes to align the replacement floor sections – this is hideously inaccurate. It is called 3 link, but is technically a 4 link when you include the trac bar. It locates the axles the prevent side to side movement. 3-Link/4-Link Kits Our suspension kits have been trail tested and race proven. For performance applications, the RRS 3-Link system increases chassis beaming and torsion rigidity for faster suspension reaction time (for better feedback), greater torque handling capacity, optimum torque transference to the chassis and precise control over differential movements. This suspension system has all 3 links running parallel to each other. Pressing the edit button immediately switches to edit mode listing more details about the dimensions of the model and allowing you to … This kind of suspension always has some kind of … Busting the Myth of the Watts Link. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I am trying to find out what that measurment is I am not to savy with the 3 link setup. Mine are angled a slight amount and it rides great. This configuration is common in General Motors cars built in … I have 19 inch long lowers center to center a 21 inch torque link at a 17.5 degree angle and a short panhard bar 17 inches center to center mounted to a pinion plate. Technically speaking, you want the links to be as parallel as possible but I dont think you will have and issues. Please note, your computer will need excel or an equivalent to operate this template. Wheel camber is zero irrespective if the vehicle is stationary or moving round a bend in the road. Panhard or Trackbar:The panhard on a 3 link is the part that is used to hold the axle side-to-side within the vehicle. All of which results in better traction (for improved acceleration and braking) along with outstanding cornering ability. It also allows wheels with up to a 5½-inch offset to be used. In the Rear Suspension chapter, you talk about using a 3-link rear suspension on dirt, with the upper link having an ideal length of 41 inches and mounted downhill at a 20-degree angle. A newer style that is only just now becoming stock in just a few vehicles and that works well as performance type of suspension. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more! The teams that experiment with the … • The superior geometry of the RRS 3 Link results in drastically reduced roll under steer, accurate turn in & firm flat cornering. • RRS has designed the torque arm and cross member to handle up to 1000ft/lbs of torque, • User adjustable settings including ride height, shock damper tuning, pinion angle, lateral differential location and roll centre height. One of the most common questions we get about suspension setup and tuning is how 4-link geometry affects the performance and handling of a vehicle. • The RRS 3 Link system increases chassis beaming and torsion rigidity for faster suspension reaction time allowing instantaneous feedback. will that work or will i have to weld an extesion on the truss to keep the mount vertical? When cornering (i.e. Suspension Geometry Software for Purchase The Alternative Rocker - Taurus SHO V6-powered, Explorer-framed, TTB-front, RCV'd, YJ-bodied east coast racer. one side down one side up), this moves one side further forward than the other – which induces hideously-undesirable roll under-steer. Angling the arms in a 3 link means nothing, there is no triangulation to hold the axle because you need two other arms to hold the axle, four links will hold the axle side to side, 3 links won't hold it at all regardless of the angles.......so you need a track bar. The 3 link rear suspension system. The lower control arms are 11* from perpendicular to the front axle ( front / back and left / right plane ) My upper control arm is perpendicular to the axle. The 4-link is a relatively complex rear suspension that is very sensitive to adjustments. Using your three link suspension to dial in your car is a viable adjustment option that can be performed quickly right at the track. Roll steer, drive angles, birdcage indexing / effects, trailing arm toe, panhard devices, lift and pull bars, 6th coils, damper shocks, stacked, 2 step and double spring arrangements, 5th coils and shocks, leaf springs, tall vs. short springs, 3-link, and much more • Roll center locations / tuning • Front suspension geometry setup and tuning HAVE YOU BEEN THINKING ABOUT STRETCHING YOUR WHEELBASE OR 3-LINKING THE FRONT? This created a blank slate and allowed me to design my own adjustable 3-link rear suspension. A different type of link system that falls into the three- and four-link group is the wishbone three-link. Your thinking too hard about this and it seems like your confusing yourself. • The superior geometry of the RRS 3 Link results in drastically reduced roll under steer, accurate turn in & firm flat cornering. That is to say; with the RRS 3-Link, the tyre will stay more centred in the wheel arch throughout the range of suspension travel. For a better experience, please enable JavaScript in your browser before proceeding. I'm in the midst of building a long arm 3-Link for the front of my XJ and wondering about my suspension geometry. Bottom line though is that a front suspension is easier than a rear suspension in some ways. Give use some tips and tricks of your front 3-link. We've taken the knowledge from running thousands of miles of trails and developed suspension kits with optimized geometry for unmatched bind-free suspension performance. 96XJ, D60/60, 38's, 3link Front, 4Link Rear, Full Hydro. EVERY RRS bracket is laser cut to exact tolerances and all frames and cross-members are jig welded in precision fixtures for steadfast consistency. However they may require jacking into location or some deft persuasion with a plastic-faced hammer or heavy rubber mallet. After some research, we found a good and reliable suspension calculator that provides 4 link (including those with travel addition) and 3 link calculators. Watts Linkage suits Mustang 1964 ½ - 1970, US Falcon, Ranchero and Fairlane 1960 to 1969 with RRS coil over suspension. What we call a 3-link is 4 suspension links, two lower links from axle to frame, one upper link from axle to frame … With a three link you dont have to worry about binding. • The RRS 3 Link rear suspension system boasts dramatically improved suspension geometry over the inferior factory leaf spring set up. 4-Link Suspension Guide: Anti-Squat, Anti-Dive, & Roll Center. therefore trying to “plant” the rear tires and assisting the braking action. When cornering (i.e. Think about it, say you … Tire rolling radius is a bit less than half of the diameter of the tire, basically how high the axle centerline will be from the ground taking into account tire pressure.