How Do Bicycle Generator Lights Work? The basic concept behind a battery-free bicycle light is to use the motion of the bicycle wheel to generate electricity. As the wheel rotates, it turns a dynamo of some kind, which acts as a generator. The dynamo produces an electric current that is then delivered to the lights.
Where To Buy Bike Light Dynamo? You can expect a typical dynamo build, including hub, lights, rim, and spokes, to cost from $220 for a basic set-up to $800 or more for high-end systems. On-board lighting also adds some weight to the bike, typically 1.5-2 pounds (680-907 grams). How much does a dynamo hub cost?
How Much Power Does A Bicycle Dynamo Produce? A cyclist’s average speed is 12 mph. Most dynamos are designed to produce ~3W (watts) of power at that speed. What current does a bicycle dynamo produce? A standard dynamo creates a direct current (DC) – a one-directional flow of electrical charge. A bicycle dynamo creates an