I imagine the ridge is so you can mount things on it, like lighting, racks, speedometers and have a little extra strength from the rib. Also the bolt and nut would not be protruding on the underside.fantastic. not only the artwork, but subjects, too.
Q: anyone know the reason behind shaping the front fender as in post #98, figure #9?
looks snazzy, but i didn't know if it's to represent something other than a little panache.
thanks