ntsqd
Heretic Car Camper
There is something hidden here that would appeal more to a desert racer/chaser than to a crawler. By using a spring with a lot of arch you can get a lot of up-travel without risking the spring going flat or into negative arch. By doing that the spring works and lives a longer & happier life. I know of a couple Toyota Mini-trucks set up for desert chase/pre-run use that have been converted from SOA to SUA just for this reason. One is Nikki's (sp?) from Total Chaos. A good friend of mine insists on never taking a leaf spring to less that 1" of remaining arch when at the metal to metal limits.snip.....
you can do super arched springs and long shackles in an SUA configuration but it makes little sense in the end.