tubing on his Satchell Link setup Jaguar with good results. One question, due to the lower arms (the angled ones) and their mounting points having to deal with some bending force as well as pure tension/compression forces, what size bar should I use to ensure enough strength there (for reliability and rigidity in maintaining geometry)? There's a guy out there using 1" x. During dynamic conditions, the motion ratio of the suspension is subject to change based on various parameters such as suspension geometry, spring parameters, wheel parameters, mounting points etc. These methods are usually used for estimating motion ratio in static conditions. There just aren't any other options that have fewer drawbacks than this design (that I've found thus far). Let’s dive a little further into these methods individually. Why the hassle? I'd like to optimize the truck for autocross while retaining the live rear axle. I plan to get the truck in the air this weekend and take some measurements, but the setup (aside from the lower two links) will be akin to the 4 links already out there. Additionally, it should be "kinematically free" and not require weird axle movements (think Mustangs). It also doesn't suffer the same level of cornering bind that a 4 link does (4 link is limited geometrically as the bars must remain parallel) and gives the ability to tune in neutral roll steer if desired. This setup is more ideal for handling since it provides an "infinite" possibility of flexibility (due to arm placement), is more compact than the Hotchkiss suspension, can accomodate roll understeer and anti-squat, and requires no laternal axle location device (such as panhard rod or Watt's link). Its even got a real time modeler so you can see the changes youve made in real time. Lets you set your links length, wheelbase, tire diameter track width. Has anyone considered the use of a Satchell Link setup (or any type of angled arm or triangulated 4 link setup) for the rear suspension on our trucks? The more I look at it, the more I want to attempt it.įor those who are unfamiliar with a Satchell link, it's a variation of a four link where two of the links point inward towards the center of the car (usually at a 20-45 deg angle and mounting to a point ahead of the lateral center of the rear mounting points) instead of running parallel (longitudinally) with the other two links. Allows you to set the pinion angle, as well as decide the best triangulation for the lower, and upper links.
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