Well, my neoprene front fender extension on the Goldwing didn’t work so well – somehow it rubbed the front tire and that pulled it up between the fender and the tire. I heard the squealing and felt the odd vibration in the handlebars and stopped quickly. It was obvious that it was going to have to be removed, so I got out the tools and did just that. Crap.
When I got home from the ride, I emailed cyclemed from the GL1800 forums and ordered a fender extension from him. He shipped it out on Monday and I got it on Thursday. I removed the rear section of the front fender and matched up the extension so that I could rough up the mating areas for the ABS cement. Since I had already drilled holes for the neoprene extension, I covered them with blue tape so that the ABS cement didn’t get on the outside of the fender. Grabbed a couple of clamps and put the ABS cement on boths parts and pressed them together. Checked the alignment (quickly, as you don’t have much time) and then clamped the sides to hold it all in place. Let it sit for a few hours and then took the clamps off and drilled out the holes. I re-used the bolts, washers, and nuts but I cut the bolts down to the minimum necessary length before tightening them up. I reinstalled it and it looks nice, fits closely to the tire but not too closely.
I certainly hope this extension works better than my attempt.
UPDATE 17 July: It does work better. I just got back from a 1000+ mile ride and it worked great. Unfortunately I can attest that it works well in a deluge although I had no intention of testing it in those conditions. I guess that’s just part of biking.