Quote:
Originally Posted by Capt Spaulding
Andrew, would you mind offering a readers digest condensed explanation?
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One of the "features" that's sometimes marketed with the lower end dual height adjustable coilovers is that although they are rebuildable, it's easier and cheaper for the company to just send you a new damper cartridge. So a while back, a customer brought in his car with a set of very popular coilovers that were ready to be refreshed with new damper cartridges. They were labeled for 3 completely different cars (from 2 manufacturers)...meaning that they use the same exact damper for cars that very much should not be using the same exact damper.
Basically, these companies make vehicle specific lower mounts and camber plates. That's about the extent of the engineering for each car. Then they pick one of their shock cartridges (they have a handful of lengths and valving profiles on the shelf), slap on a spring, and call it a day.
A dual height adjustable coilover construction makes that incredibly easy to do. The length is adjustable with the dual height adjustablity, but the
overall stroke is usually not much and that's far more important. The feature itself is not bad, but it's much more complicated than most think and ride height + preload should be set carefully. Way too many people think spring preload has an effect on spring rate and that's simply not true on a linear spring. Or that you get more bump travel with zero preload, which is also untrue. But it's been marketed well.
Again, not every low end dual height adjustable coilover is like this and I have no idea about Revel coilovers. But many do follow this business model.
- Andrew