ScottieJ wrote:But then you have the weak jimny axles

Are Jimny axles really weaker than SJ axles? I was told that the radius arm mounts tear easily, but that's about all the bad news I heard about Jimny axles - I *thought* they were basically Samurai axles with vacuum operated freewheeling hubs...
I've also heard Jimny chassis tend to rot real easy (especially compared to SJ's).
I'd love to coil mine - I once bought Vitara rear trailing arms and upper triangulated "Y" link just to offer them up to the axle, and then engineer a solution in my head.
What I came up with was the idea of making a Vitara style triangulated upper "Y" link that doubled up as a bam-bar, coil spring perches that double up as leaf spring perches, or going with coilovers and build it in such a way that I can swap between leafs and coils at will. Making the Vitara trailing arms use the leaf spring perches, the chassis has no modifications that would need an IVA (under the 8-point system, you're allowed to box in a 3 sided chassis or add crossmembers to the chassis without needing an IVA - the upper link would simply be attached to that additional crossmember. You only need an IVA if you shorten, lengthen or replace the chassis with a non-brand new chassis).
Leaving the upper link in place should (if it's engineered correctly) just prevent axle wrap while it's on leafs.
I also thought about making the trailing arms include trailer axle bearings, so they would rotate and not bind up as much during articulation.
That's all for waaaay in the future, though. I'm thinking out loud here, more than seriously considering doing this stuff. I have no time right now to finish my current to-do list and get it ready to go back on the road!
Anyone got a Tardis so I can make some time?