This is astronomical diy because I ride this bike to observe, 18km each way, with moderate climbing. Riding with all the astro gear is slow, so I came up with adding an aerodynamic fairing. Early tests were promising. I went observing last Sunday and managed 23.2 km/h average speed.
Now for the second phase of the project. Because the faring is made of cardboard (that is the only material I can work with) and I plan to commute with it, I need to make it water resistant. The only way I can think of is warping duct tape. I think you guys are more experienced on this and I better ask here what works and what doesn’t. Thx.