whilst surfing the net tonight, i have discovered futaba's S-Bus system http://www.futaba-rc.com/sbus/index.html
looking into it, it all seems pretty good but how does it stand with over 20kg scheme. the demo system on the above page only uses 1 rx and one battery so that would have to be duplicated, but does that also mean that there would effectively have to be x2 S-Bus systems fitted to the one airframe??
just curiousity really, not planning on building anything yet that would need it

cheers
nick