Would anyone care to express an opinion on how much kingpin offset (scrub radius) is desirable on a recumbent trike? It's not difficult to get suggestions for trail (or caster), but all I've been able to find are recommendations ranging from "none" to "a small amount of negative" (if eliminating brake-steer is a priority), for kingpin offset. I'm particularly interested in how much negative offset is possible before handling is badly affected.
