Sounds like a good project. Make sure the blades are angled for the average wind speed in your area; too much pitch and you’ll just spin and waste torque. Use a lightweight composite for the shaft to reduce inertia, but keep a decent mass at the bottom for damping. If the lights flicker, check the regulator—maybe a small diode bridge and a capacitor bank to smooth the output. And don’t forget to secure the whole unit from animals; a few hungry raccoons can turn your neat system into a buffet. Keep tweaking and you’ll get a steady glow.

Glad it helps. Tighten those bearings and a shroud will cut drag. Keep an eye on any wobble after the changes; that’s usually the real killer. Good luck.