Link: A No-Friction Bicycle Light Generator
Link (webpage for this winding machine): DIY Hand-Driller Coil Winding Machine with Digital Counter
Step 1: Step2
Hand-driller's handle turning once, the coil will turning about 3.5 turns. So if the digital counter showed 100, the coil will be 350 turns. Each hand-driller may be in different rate, just test it before use it.
A no-friction bicycle lights dynamo