I had this bright idea tonight, thinking about changing up the rear suspension on my Trazer. First was inboarding the springs, then inboard and 3/4 eliptic. Now I've thought of a twist on the normal 3/4 implementation, and was wondering if anyone had ever seen it done this way, or if it really makes any sense at all. In a normal 3/4 eliptic, the upper leaf is a single leaf, shackled to the main leaf pack. The upper leaf lays flat against the frame (or whatever bracketry is there), and the spring eye is static relative to the frame. When the axle is unloaded, the upper spring falls away from the frame, allowing much more droop than a regular leaf setup. My twist is this. The upper leaf is a multi leaf pack. Similar to a 1/4 eliptic pack. Bolted to the frame like a normal 3/4 setup. With the multi leaf pack, the upper pack would maintain an arch at ride height. With the upper and lower packs both fighting compression, effective spring rate would be greatly reduced. Assuming the 1/4 pack and main pack have the same rate, then the effective rate would be 1/2 of that. When the upper leaf pack "bottoms" against the frame, the lower leaf could still compress, but then the suspension would have a higher effective spring rate. This would mean a softer spring rate until the suspension is part way through the compression cycle, then the spring rate would increase, like a real poor man's air bump. On the other side of suspension cycling, during droop/unloading, the multileaf 3/4 setup should behave differently as well. A regular 3/4 setup has excessive droop, requiring a center limit strap in most applications. The multileaf upper would have much greater resistance to droop, allowing more droop than a regular leaf setup, but preventing the "unloading" commonly associated with a 3/4 setup. These are just crazy ramblings going on in my head, and if any of it seems illogical, incorrect, or insane, please explain to me why. I'm actually considering trying this as a setup to see how it works, unless someone has done it before and it's just a bad idea. Thanks for reading all of that, if you can. I might even draw this out later to help everyone understand my poor explanations =) I'm hoping this gets enough discussion to warrant being moved to the CoG forum. That is if I'm not just really stupid in thinking this up.