Since our season ended, we have been doing some experimentation with 3D printed wheels, too. Here are a couple of our results:
More pics here:
https://picasaweb.google.com/1099928...eelDevelopment
The latest version has the spokes as internal structure, with fairings on the outer surfaces. We'll print some graphics or lettering on the outer fairing in a contrasting color.
Fun experiments, but we were so happy with our Colsons this year that we'll probably go that route again, unless there is a compelling reason to switch.