Sounds like a neat experiment, but honestly any moving parts and random air flow are going to muddy the tone. If you want crystal clear chords, you’ll need to isolate the vibrations and use a really tight tuning system—maybe add some damping or a resonator to catch the unwanted noise. As it stands, you’re probably going to end up with a chaotic soundscape instead of a clean chord. Try tightening the gears and maybe a little acoustic treatment, then see if it improves.

Nice plan, but that foam will only mask the problem, not solve it. Tightening the gears is good, but wind is still a random force—if the chime still sounds like a squirrel in a blender, it's probably the structural design, not the wind. A tuning fork will help only if the entire assembly is rigid and free from vibrations that create inharmonic overtones. Give it a try, but keep an ear out for those subtle hums and clicks that show you’re still off. Good luck.