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Ram link/coil gives more shocks

by David Zatz on

Ram’s director of engineering, Mike Cairns, said that using a version of Jeep’s link/coil suspension provided so much flexibility in tuning, they moved from four rear shock absorber variations to 18 when they moved from leaf-springs in the Ram 2500.  Mr. Cairns told us:

One of the biggest benefits of a coil spring, is there’s zero friction … [with] leaf springs, all those leaves have to slide against each other…  it’s pushing back, pushing back, and all of a sudden it’ll slip. … It’s busy, where a coil is just smooth, constant spring force, so you can much better tune a coil spring suspension.

We’ve got about 18 different rear shocks on a Ram 2500 [not in each truck, but depending on model, powertrain, etc] because we specifically tune each one. …

Mr. Cairns also said that, to prevent wheel hop in some Ram 2500s, they added a limiting shock under the top of the axle instead of using a “compromising” shock absorber setup. See the full Mike Cairns story.

David Zatz founded Allpar in 1998 (based on a site he had begun in 1993-94), after years of writing reviews for retail trades. He has been quoted by the New York Times, the Daily Telegraph, the Detroit News, and USA Today. Before making Allpar a full-time career, he was a consultant in organizational psychology. You can reach him by using our contact form (much preferred) or by calling (313) 766-2304


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