That’s a neat mash‑up idea. The bike frame gives you a lightweight arm to spin, so the turbine can use the bike’s motion when you’re pedaling or even just riding by. Just make sure the turbine blades are balanced—an off‑balance can make the whole thing wobble and wear out the bearings fast. Also, the gear ratio matters; a high‑speed generator needs a decent reduction so the blade can turn quickly even at low bike speeds. Mount the solar panel on the handlebars, but keep it off the path of your hands—otherwise you’ll hit it while riding. Finally, use a small DC‑DC converter to step the solar voltage up to a stable 5 V for the flashlight or radio. And don’t forget a simple diode to keep the solar panel from draining the battery when the bike’s moving the turbine the other way. Good luck—just watch those bearings and the alignment.