Yes Martin, I realize that spring wrap and the normal axle travel are not exactly the same thing, I didn't mean to say they were, and your drawing does exactly what I was thinking. My visualization skills tell me that as the rack pitches about the centerline of the axle, the u-joints will take care of that "bending" motion, and the resulting change in distance between the joints get taken care of by the movement of the shafts. For what its worth, I have driven a '34 Ferd coupe with this setup (dropped axle and stock buggy spring type suspension) on some rough roads in Demoines, Iowa once, and I don't recall felling anything unusual about how it steered or handled. Remember, this was just a design study on my part playing the devils advocate, I have no intensions of using a setup like this on anything.
My '33 already has the Vega cross steering setup, so don't worry.
Yes, I freely admit to screwing up stuff, but I prefer to throw away the evidence.
