I'm thinking about building a recumbent trike. I am really struggling with the rear axle and have a few questions. Is there any advantage in driving both rear wheels? Presumably, if I drive just one wheel, I don't have to worry about differential. Do I really need to worry about differential anyway? How does a trike cope with corners? Does the rider lean in the same way as a bike? Does the outside wheel leave the ground? Any thoughts or experiences would be very much appreciated.