I'd think that there might be people with lowered suspensions who would want to shorten the arms to correct excessive negative camber (at least for the street).
Remember that lengthening the arms not only increases negative camber (which in the right cases and right amounts can be a very good thing), but also increases the track of the rear wheels. You want the rear track on a FWD car to be the same or narrower, or you end up magnifying all the negatives of a FWD setup.
In my case, I'm *raising* the car, so making the arms a little longer will just correct positive camber and because it's raised, the rear track is already a little narrower than stock, so I can widen it back out without issue. My situation is not the typical use for these, however.
The biggest gain of these arms is in the lack of bind. That's 95% of the reason to do it. It's just that once you build them, there's no reason, and it would actually be harder, to build them without the ability to adjust. Most people shouldn't make more than small adjustments either way.
Now, make up some lengthened tubular control arms for the front, extended parallel links for the rear, custom make trailing arms and some fender flares . . .
Originally Posted by
BenFenner That's all I was checking. We don't think most people will want to go too much shorter than stock, right? And that mostly they'd want to go longer, so keeping that in mind we'd only want a little bit of adjustability to go shorter, and the majority of the adjustability to go longer. And still keep it structurally sound.
It is nice that these components shouldn't be under any stress other than compressive and tensile.