How does a dynamo bike light work?
How does a dynamo bike light work? Basically it's a backwards electric motor. Rather than using electricity to create rotation, a dynamo uses rotation to create electricity. As you can see, bottle dynamos are mounted beside the wheel and have a little wheel which runs against the tyre, converting its rotation to electricity to power the attached light. How long do dynamo lights last? Maximum output is a searing 100 lux, and the standlight lasts for around four minutes after coming to a stop. Is Lux and lumens the same? Lux is used to measure the amount of light output...