As an extension of my chopper planner / front end configurator tool, I'm working on a version that calculates the wheel path (and some resulting kinematics) for a springer style front end (would also work for Erles fronts, and whatever those awful schwin bicycle style front ends are called - basically anything with just one pivot). Is this vaguely useful to anybody? What sort of calculations are of interest? To my mind, anti-dive is the big one. Chopper style springers (if they have a front brake) usually run some sort of floating brake caliper, which makes calculating the dive force much more complex; how common is this on other setups? Is it worth the extra work? I almost certainly will include options for at least basic spring setups, to calculate wheel rate etc.