Root Moose
Expedition Leader
Personally i think a radius arm setup can work well in an Overland rig... unless you plan to use all your suspension travel often.
daily driver - weekend explorer / wheeler... not the type to be hauled on a trailer obviously...
IMO, radius arms would be fine for your usage.
If you are considering a four link versus a radius arm due to the caster curve being better with the four link I think that is not a good criteria to base a decision on. While it is valid from a physics point of view the relative difference is so minor to not really be felt through the steering wheel.
Radius arms are harder on bushings and they don't have the ultimate flex that a three or four link may have but exactly how much flex do you need on an overlanding rig? Even with the radius arms you may want to add heavy bump stops and/or limiting straps.
The negative that gets thrown out about radius arms is that they unload during steep climbs. How much of an issue is this? I can't answer that for you.
FWIW, full size Broncos, coiler Land Cruisers, Land Rovers and Galendewagens have been using long arms for a long time. It's simple, strong, and "good enough" especially for an overlanding rig.
does anyone have anything to say about RubiconExpress' "Y" style long arm kits? reliability wise - on-road comfort?
Another kit I haven't seen in the buff. The only quibble I've heard about it was that the mounting to the uni-rails is "interesting" and made adding rocker rails challenging. This may be old data from when the kit first came out. Research it further.